Module: MakeMakefile
Overview
mkmf.rb is used by Ruby C extensions to generate a Makefile which will correctly compile and link the C extension to Ruby and a third-party library.
Defined Under Namespace
Modules: Logging
Constant Summary collapse
- CONFIG =
The makefile configuration using the defaults from when Ruby was built.
RbConfig::MAKEFILE_CONFIG
- ORIG_LIBPATH =
ENV['LIB']
- C_EXT =
Extensions for files compiled with a C compiler
%w[c m]
- CXX_EXT =
Extensions for files complied with a C++ compiler
%w[cc mm cxx cpp]
- SRC_EXT =
Extensions for source files
C_EXT + CXX_EXT
- HDR_EXT =
Extensions for header files
%w[h hpp]
- INSTALL_DIRS =
[ [dir_re('commondir'), "$(RUBYCOMMONDIR)"], [dir_re('sitedir'), "$(RUBYCOMMONDIR)"], [dir_re('vendordir'), "$(RUBYCOMMONDIR)"], [dir_re('rubylibdir'), "$(RUBYLIBDIR)"], [dir_re('archdir'), "$(RUBYARCHDIR)"], [dir_re('sitelibdir'), "$(RUBYLIBDIR)"], [dir_re('vendorlibdir'), "$(RUBYLIBDIR)"], [dir_re('sitearchdir'), "$(RUBYARCHDIR)"], [dir_re('vendorarchdir'), "$(RUBYARCHDIR)"], [dir_re('rubyhdrdir'), "$(RUBYHDRDIR)"], [dir_re('sitehdrdir'), "$(SITEHDRDIR)"], [dir_re('vendorhdrdir'), "$(VENDORHDRDIR)"], [dir_re('bindir'), "$(BINDIR)"], ]
- CONFTEST =
"conftest".freeze
- CONFTEST_C =
"#{CONFTEST}.c"
- OUTFLAG =
CONFIG['OUTFLAG']
- COUTFLAG =
CONFIG['COUTFLAG']
- CPPOUTFILE =
config_string('CPPOUTFILE') {|str| str.sub(/\bconftest\b/, CONFTEST)}
- STRING_OR_FAILED_FORMAT =
:stopdoc:
"%s"
- FailedMessage =
<<MESSAGE Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: MESSAGE
Class Method Summary collapse
-
.config_string(key, config = CONFIG) ⇒ Object
:stopdoc:.
- .dir_re(dir) ⇒ Object
- .rm_f(*files) ⇒ Object
- .rm_rf(*files) ⇒ Object
Instance Method Summary collapse
-
#append_library(libs, lib) ⇒ Object
:no-doc:.
-
#arg_config(config, default = nil, &block) ⇒ Object
:stopdoc:.
- #cc_command(opt = "") ⇒ Object
-
#check_signedness(type, headers = nil, opts = nil, &b) ⇒ Object
Returns the signedness of the given
type
. -
#check_sizeof(type, headers = nil, opts = "", &b) ⇒ Object
Returns the size of the given
type
. -
#checking_for(m, fmt = nil) ⇒ Object
This emits a string to stdout that allows users to see the results of the various have* and find* methods as they are tested.
- #checking_message(target, place = nil, opt = nil) ⇒ Object
- #configuration(srcdir) ⇒ Object
-
#convertible_int(type, headers = nil, opts = nil, &b) ⇒ Object
Returns the convertible integer type of the given
type
. - #cpp_command(outfile, opt = "") ⇒ Object
- #cpp_include(header) ⇒ Object
-
#create_header(header = "extconf.h") ⇒ Object
Generates a header file consisting of the various macro definitions generated by other methods such as have_func and have_header.
-
#create_makefile(target, srcprefix = nil) ⇒ Object
Generates the Makefile for your extension, passing along any options and preprocessor constants that you may have generated through other methods.
- #create_tmpsrc(src) ⇒ Object
-
#depend_rules(depend) ⇒ Object
Processes the data contents of the “depend” file.
-
#dir_config(target, idefault = nil, ldefault = nil) ⇒ Object
Sets a
target
name that the user can then use to configure various “with” options with on the command line by using that name. -
#dummy_makefile(srcdir) ⇒ Object
creates a stub Makefile.
-
#each_compile_rules ⇒ Object
:nodoc:.
-
#egrep_cpp(pat, src, opt = "", &b) ⇒ Object
Returns whether or not the
src
can be preprocessed with the C preprocessor and matches withpat
. -
#enable_config(config, default = nil) ⇒ Object
Tests for the presence of an
--enable-
config or--disable-
config option. -
#find_executable(bin, path = nil) ⇒ Object
Searches for the executable
bin
onpath
. -
#find_executable0(bin, path = nil) ⇒ Object
This method is used internally by the find_executable method.
-
#find_header(header, *paths) ⇒ Object
Instructs mkmf to search for the given
header
in any of thepaths
provided, and returns whether or not it was found in those paths. -
#find_library(lib, func, *paths, &b) ⇒ Object
Returns whether or not the entry point
func
can be found within the librarylib
in one of thepaths
specified, wherepaths
is an array of strings. -
#find_type(type, opt, *headers, &b) ⇒ Object
Returns where the static type
type
is defined. -
#have_const(const, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the constant
const
is defined. - #have_devel? ⇒ Boolean
-
#have_framework(fw, &b) ⇒ Object
Returns whether or not the given
framework
can be found on your system. -
#have_func(func, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the function
func
can be found in the common header files, or within anyheaders
that you provide. -
#have_header(header, preheaders = nil, opt = "", &b) ⇒ Object
Returns whether or not the given
header
file can be found on your system. -
#have_library(lib, func = nil, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the given entry point
func
can be found withinlib
. -
#have_macro(macro, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not
macro
is defined either in the common header files or within anyheaders
you provide. -
#have_struct_member(type, member, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the struct of type
type
containsmember
. -
#have_type(type, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the static type
type
is defined. -
#have_typeof? ⇒ Boolean
Used internally by the what_type? method to check if the typeof GCC extension is available.
-
#have_var(var, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the variable
var
can be found in the common header files, or within anyheaders
that you provide. -
#init_mkmf(config = CONFIG, rbconfig = RbConfig::CONFIG) ⇒ Object
:stopdoc:.
- #install_dirs(target_prefix = nil) ⇒ Object
- #install_files(mfile, ifiles, map = nil, srcprefix = nil) ⇒ Object
- #install_rb(mfile, dest, srcdir = nil) ⇒ Object
- #libpath_env ⇒ Object
- #libpathflag(libpath = $DEFLIBPATH|$LIBPATH) ⇒ Object
- #link_command(ldflags, opt = "", libpath = $DEFLIBPATH|$LIBPATH) ⇒ Object
- #log_src(src, heading = "checked program was") ⇒ Object
-
#macro_defined?(macro, src, opt = "", &b) ⇒ Boolean
This is used internally by the have_macro? method.
- #map_dir(dir, map = nil) ⇒ Object
- #merge_libs(*libs) ⇒ Object
- #message(*s) ⇒ Object
- #mkintpath(path) ⇒ Object
-
#mkmf_failed(path) ⇒ Object
Returns whether or not the Makefile was successfully generated.
-
#modified?(target, times) ⇒ Boolean
Returns time stamp of the
target
file if it exists and is newer than or equal to all oftimes
. -
#pkg_config(pkg, option = nil) ⇒ Object
Returns compile/link information about an installed library in a tuple of
[cflags, ldflags, libs]
, by using the command found first in the following commands:. - #relative_from(path, base) ⇒ Object
-
#scalar_ptr_type?(type, member = nil, headers = nil, &b) ⇒ Boolean
Used internally by the what_type? method to determine if
type
is a scalar pointer. -
#scalar_type?(type, member = nil, headers = nil, &b) ⇒ Boolean
Used internally by the what_type? method to determine if
type
is a scalar pointer. - #split_libs(*strs) ⇒ Object
- #timestamp_file(name, target_prefix = nil) ⇒ Object
- #try_cflags(flags) ⇒ Object
-
#try_compile(src, opt = "", *opts, &b) ⇒ Object
Returns whether or not the
src
can be compiled as a C source. -
#try_const(const, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the constant
const
is defined. - #try_constant(const, headers = nil, opt = "", &b) ⇒ Object
-
#try_cpp(src, opt = "", *opts, &b) ⇒ Object
Returns whether or not the
src
can be preprocessed with the C preprocessor. - #try_cppflags(flags) ⇒ Object
- #try_do(src, command, *opts, &b) ⇒ Object
-
#try_func(func, libs, headers = nil, opt = "", &b) ⇒ Object
You should use
have_func
rather thantry_func
. - #try_ldflags(flags) ⇒ Object
-
#try_link(src, opt = "", *opts, &b) ⇒ Object
Returns whether or not the
src
can be compiled as a C source and linked with its depending libraries successfully. -
#try_link0(src, opt = "", *opts, &b) ⇒ Object
:nodoc:.
-
#try_run(src, opt = "", &b) ⇒ Object
Returns whether or not: * the
src
can be compiled as a C source, * the result object can be linked with its depending libraries successfully, * the linked file can be invoked as an executable * and the executable exits successfully. - #try_signedness(type, member, headers = nil, opts = nil) ⇒ Object
- #try_static_assert(expr, headers = nil, opt = "", &b) ⇒ Object
-
#try_type(type, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the static type
type
is defined. -
#try_var(var, headers = nil, opt = "", &b) ⇒ Object
You should use
have_var
rather thantry_var
. - #typedef_expr(type, headers) ⇒ Object
- #what_type?(type, member = nil, headers = nil, &b) ⇒ Boolean
-
#winsep(s) ⇒ Object
Converts forward slashes to backslashes.
- #with_cflags(flags) ⇒ Object
-
#with_config(config, default = nil) ⇒ Object
Tests for the presence of a
--with-
config or--without-
config option. - #with_cppflags(flags) ⇒ Object
-
#with_destdir(dir) ⇒ Object
:stopdoc:.
- #with_ldflags(flags) ⇒ Object
- #with_werror(opt, opts = nil) ⇒ Object
- #xpopen(command, *mode, &block) ⇒ Object
- #xsystem(command, opts = nil) ⇒ Object
Class Method Details
.config_string(key, config = CONFIG) ⇒ Object
:stopdoc:
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# File 'lib/mkmf.rb', line 144 def config_string(key, config = CONFIG) s = config[key] and !s.empty? and block_given? ? yield(s) : s end |
.dir_re(dir) ⇒ Object
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# File 'lib/mkmf.rb', line 149 def dir_re(dir) Regexp.new('\$(?:\('+dir+'\)|\{'+dir+'\})(?:\$(?:\(target_prefix\)|\{target_prefix\}))?') end |
.rm_f(*files) ⇒ Object
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# File 'lib/mkmf.rb', line 256 def rm_f(*files) opt = (Hash === files.last ? [files.pop] : []) FileUtils.rm_f(Dir[*files.flatten], *opt) end |
.rm_rf(*files) ⇒ Object
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# File 'lib/mkmf.rb', line 262 def rm_rf(*files) opt = (Hash === files.last ? [files.pop] : []) FileUtils.rm_rf(Dir[*files.flatten], *opt) end |
Instance Method Details
#append_library(libs, lib) ⇒ Object
:no-doc:
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# File 'lib/mkmf.rb', line 896 def append_library(libs, lib) # :no-doc: format(LIBARG, lib) + " " + libs end |
#arg_config(config, default = nil, &block) ⇒ Object
:stopdoc:
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# File 'lib/mkmf.rb', line 1557 def arg_config(config, default=nil, &block) $arg_config << [config, default] defaults = [] if default defaults << default elsif !block defaults << nil end $configure_args.fetch(config.tr('_', '-'), *defaults, &block) end |
#cc_command(opt = "") ⇒ Object
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# File 'lib/mkmf.rb', line 487 def cc_command(opt="") conf = RbConfig::CONFIG.merge('hdrdir' => $hdrdir.quote, 'srcdir' => $srcdir.quote, 'arch_hdrdir' => $arch_hdrdir.quote, 'top_srcdir' => $top_srcdir.quote) RbConfig::("$(CC) #$INCFLAGS #$CPPFLAGS #$CFLAGS #$ARCH_FLAG #{opt} -c #{CONFTEST_C}", conf) end |
#check_signedness(type, headers = nil, opts = nil, &b) ⇒ Object
Returns the signedness of the given type
. You may optionally specify additional headers
to search in for the type
.
If the type
is found and is a numeric type, a macro is passed as a preprocessor constant to the compiler using the type
name, in uppercase, prepended with SIGNEDNESS_OF_
, followed by the type
name, followed by =X
where “X” is positive integer if the type
is unsigned and a negative integer if the type
is signed.
For example, if size_t
is defined as unsigned, then check_signedness('size_t')
would return 1 and the SIGNEDNESS_OF_SIZE_T=
1 preprocessor macro would be passed to the compiler. The SIGNEDNESS_OF_INT=-1
macro would be set for check_signedness('int')
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# File 'lib/mkmf.rb', line 1331 def check_signedness(type, headers = nil, opts = nil, &b) typedef, member, prelude = typedef_expr(type, headers) signed = nil checking_for("signedness of #{type}", STRING_OR_FAILED_FORMAT) do signed = try_signedness(typedef, member, [prelude], opts, &b) or next nil $defs.push("-DSIGNEDNESS_OF_%s=%+d" % [type.tr_cpp, signed]) signed < 0 ? "signed" : "unsigned" end signed end |
#check_sizeof(type, headers = nil, opts = "", &b) ⇒ Object
Returns the size of the given type
. You may optionally specify additional headers
to search in for the type
.
If found, a macro is passed as a preprocessor constant to the compiler using the type name, in uppercase, prepended with SIZEOF_
, followed by the type name, followed by =X
where “X” is the actual size.
For example, if check_sizeof('mystruct')
returned 12, then the SIZEOF_MYSTRUCT=12
preprocessor macro would be passed to the compiler.
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# File 'lib/mkmf.rb', line 1302 def check_sizeof(type, headers = nil, opts = "", &b) typedef, member, prelude = typedef_expr(type, headers) prelude << "static #{typedef} *rbcv_ptr_;\n" prelude = [prelude] expr = "sizeof((*rbcv_ptr_)#{"." << member if member})" fmt = STRING_OR_FAILED_FORMAT checking_for ("size of #{type}", headers), fmt do if size = try_constant(expr, prelude, opts, &b) $defs.push(format("-DSIZEOF_%s=%s", type.tr_cpp, size)) size end end end |
#checking_for(m, fmt = nil) ⇒ Object
This emits a string to stdout that allows users to see the results of the various have* and find* methods as they are tested.
Internal use only.
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# File 'lib/mkmf.rb', line 912 def checking_for(m, fmt = nil) f = caller[0][/in `([^<].*)'$/, 1] and f << ": " #` for vim #' m = "checking #{/\Acheck/ =~ f ? '' : 'for '}#{m}... " "%s", m a = r = nil Logging::postpone do r = yield a = (fmt ? "#{fmt % r}" : r ? "yes" : "no") << "\n" "#{f}#{m}-------------------- #{a}\n" end (a) Logging:: "--------------------\n\n" r end |
#checking_message(target, place = nil, opt = nil) ⇒ Object
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# File 'lib/mkmf.rb', line 927 def (target, place = nil, opt = nil) [["in", place], ["with", opt]].inject("#{target}") do |msg, (pre, noun)| if noun [[:to_str], [:join, ","], [:to_s]].each do |meth, *args| if noun.respond_to?(meth) break noun = noun.send(meth, *args) end end msg << " #{pre} #{noun}" unless noun.empty? end msg end end |
#configuration(srcdir) ⇒ Object
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# File 'lib/mkmf.rb', line 1823 def configuration(srcdir) mk = [] vpath = $VPATH.dup CONFIG["hdrdir"] ||= $hdrdir mk << %{ SHELL = /bin/sh # V=0 quiet, V=1 verbose. other values don't work. V = 0 Q1 = $(V:1=) Q = $(Q1:0=@) ECHO1 = $(V:1=@#{CONFIG['NULLCMD']}) ECHO = $(ECHO1:0=@echo) #### Start of system configuration section. #### #{"top_srcdir = " + $top_srcdir.sub(%r"\A#{Regexp.quote($topdir)}/", "$(topdir)/") if $extmk} srcdir = #{srcdir.gsub(/\$\((srcdir)\)|\$\{(srcdir)\}/) {mkintpath(CONFIG[$1||$2]).unspace}} topdir = #{mkintpath(topdir = $extmk ? CONFIG["topdir"] : $topdir).unspace} hdrdir = #{(hdrdir = CONFIG["hdrdir"]) == topdir ? "$(topdir)" : mkintpath(hdrdir).unspace} arch_hdrdir = #{$arch_hdrdir.quote} PATH_SEPARATOR = #{CONFIG['PATH_SEPARATOR']} VPATH = #{vpath.join(CONFIG['PATH_SEPARATOR'])} } if $extmk mk << "RUBYLIB =\n""RUBYOPT = -\n" end prefix = mkintpath(CONFIG["prefix"]) if destdir = prefix[$dest_prefix_pattern, 1] mk << "\nDESTDIR = #{destdir}\n" prefix = prefix[destdir.size..-1] end mk << "prefix = #{with_destdir(prefix).unspace}\n" CONFIG.each do |key, var| mk << "#{key} = #{with_destdir(mkintpath(var)).unspace}\n" if /.prefix$/ =~ key end CONFIG.each do |key, var| next if /^abs_/ =~ key next if /^(?:src|top|hdr)dir$/ =~ key next unless /dir$/ =~ key mk << "#{key} = #{with_destdir(var)}\n" end if !$extmk and !$configure_args.has_key?('--ruby') and sep = config_string('BUILD_FILE_SEPARATOR') sep = ":/=#{sep}" else sep = "" end possible_command = (proc {|s| s if /top_srcdir/ !~ s} unless $extmk) extconf_h = $extconf_h ? "-DRUBY_EXTCONF_H=\\\"$(RUBY_EXTCONF_H)\\\" " : $defs.join(" ") << " " headers = %w[ $(hdrdir)/ruby.h $(hdrdir)/ruby/ruby.h $(hdrdir)/ruby/defines.h $(hdrdir)/ruby/missing.h $(hdrdir)/ruby/intern.h $(hdrdir)/ruby/st.h $(hdrdir)/ruby/subst.h ] if RULE_SUBST headers.each {|h| h.sub!(/.*/, &RULE_SUBST.method(:%))} end headers << $config_h headers << '$(RUBY_EXTCONF_H)' if $extconf_h mk << %{ CC = #{CONFIG['CC']} CXX = #{CONFIG['CXX']} LIBRUBY = #{CONFIG['LIBRUBY']} LIBRUBY_A = #{CONFIG['LIBRUBY_A']} LIBRUBYARG_SHARED = #$LIBRUBYARG_SHARED LIBRUBYARG_STATIC = #$LIBRUBYARG_STATIC empty = OUTFLAG = #{OUTFLAG}$(empty) COUTFLAG = #{COUTFLAG}$(empty) RUBY_EXTCONF_H = #{$extconf_h} cflags = #{CONFIG['cflags']} optflags = #{CONFIG['optflags']} debugflags = #{CONFIG['debugflags']} warnflags = #{$warnflags} CCDLFLAGS = #{$static ? '' : CONFIG['CCDLFLAGS']} CFLAGS = $(CCDLFLAGS) #$CFLAGS $(ARCH_FLAG) INCFLAGS = -I. #$INCFLAGS DEFS = #{CONFIG['DEFS']} CPPFLAGS = #{extconf_h}#{$CPPFLAGS} CXXFLAGS = $(CCDLFLAGS) #{CONFIG['CXXFLAGS']} $(ARCH_FLAG) ldflags = #{$LDFLAGS} dldflags = #{$DLDFLAGS} #{CONFIG['EXTDLDFLAGS']} ARCH_FLAG = #{$ARCH_FLAG} DLDFLAGS = $(ldflags) $(dldflags) $(ARCH_FLAG) LDSHARED = #{CONFIG['LDSHARED']} LDSHAREDXX = #{config_string('LDSHAREDXX') || '$(LDSHARED)'} AR = #{CONFIG['AR']} EXEEXT = #{CONFIG['EXEEXT']} } CONFIG.each do |key, val| mk << "#{key} = #{val}\n" if /^RUBY.*NAME/ =~ key end mk << %{ arch = #{CONFIG['arch']} sitearch = #{CONFIG['sitearch']} ruby_version = #{RbConfig::CONFIG['ruby_version']} ruby = #{$ruby.sub(%r[\A#{Regexp.quote(RbConfig::CONFIG['bindir'])}(?=/|\z)]) {'$(bindir)'}} RUBY = $(ruby#{sep}) ruby_headers = #{headers.join(' ')} RM = #{config_string('RM', &possible_command) || '$(RUBY) -run -e rm -- -f'} RM_RF = #{'$(RUBY) -run -e rm -- -rf'} RMDIRS = #{config_string('RMDIRS', &possible_command) || '$(RUBY) -run -e rmdir -- -p'} MAKEDIRS = #{config_string('MAKEDIRS', &possible_command) || '@$(RUBY) -run -e mkdir -- -p'} INSTALL = #{config_string('INSTALL', &possible_command) || '@$(RUBY) -run -e install -- -vp'} INSTALL_PROG = #{config_string('INSTALL_PROG') || '$(INSTALL) -m 0755'} INSTALL_DATA = #{config_string('INSTALL_DATA') || '$(INSTALL) -m 0644'} COPY = #{config_string('CP', &possible_command) || '@$(RUBY) -run -e cp -- -v'} TOUCH = exit > #### End of system configuration section. #### preload = #{defined?($preload) && $preload ? $preload.join(' ') : ''} } if $nmake == ?b mk.each do |x| x.gsub!(/^(MAKEDIRS|INSTALL_(?:PROG|DATA))+\s*=.*\n/) do "!ifndef " + $1 + "\n" + $& + "!endif\n" end end end mk end |
#convertible_int(type, headers = nil, opts = nil, &b) ⇒ Object
Returns the convertible integer type of the given type
. You may optionally specify additional headers
to search in for the type
. convertible means actually the same type, or typedef’d from the same type.
If the type
is a integer type and the convertible type is found, the following macros are passed as preprocessor constants to the compiler using the type
name, in uppercase.
-
TYPEOF_
, followed by thetype
name, followed by=X
where “X” is the found convertible type name. -
TYP2NUM
andNUM2TYP
, whereTYP
is thetype
name in uppercase with replacing an_t
suffix with “T”, followed by=X
where “X” is the macro name to converttype
to an Integer object, and vice versa.
For example, if foobar_t
is defined as unsigned long, then convertible_int("foobar_t")
would return “unsigned long”, and define these macros:
#define TYPEOF_FOOBAR_T unsigned long
#define FOOBART2NUM ULONG2NUM
#define NUM2FOOBART NUM2ULONG
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# File 'lib/mkmf.rb', line 1366 def convertible_int(type, headers = nil, opts = nil, &b) type, macname = *type checking_for("convertible type of #{type}", STRING_OR_FAILED_FORMAT) do if UNIVERSAL_INTS.include?(type) type else typedef, member, prelude = typedef_expr(type, headers, &b) if member prelude << "static rbcv_typedef_ rbcv_var;" compat = UNIVERSAL_INTS.find {|t| try_static_assert("sizeof(rbcv_var.#{member}) == sizeof(#{t})", [prelude], opts, &b) } else next unless signed = try_signedness(typedef, member, [prelude]) u = "unsigned " if signed > 0 prelude << "extern rbcv_typedef_ foo();" compat = UNIVERSAL_INTS.find {|t| try_compile([prelude, "extern #{u}#{t} foo();"].join("\n"), opts, :werror=>true, &b) } end if compat macname ||= type.sub(/_(?=t\z)/, '').tr_cpp conv = (compat == "long long" ? "LL" : compat.upcase) compat = "#{u}#{compat}" typename = type.tr_cpp $defs.push(format("-DSIZEOF_%s=SIZEOF_%s", typename, compat.tr_cpp)) $defs.push(format("-DTYPEOF_%s=%s", typename, compat.quote)) $defs.push(format("-DPRI_%s_PREFIX=PRI_%s_PREFIX", macname, conv)) conv = (u ? "U" : "") + conv $defs.push(format("-D%s2NUM=%s2NUM", macname, conv)) $defs.push(format("-DNUM2%s=NUM2%s", macname, conv)) compat end end end end |
#cpp_command(outfile, opt = "") ⇒ Object
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# File 'lib/mkmf.rb', line 495 def cpp_command(outfile, opt="") conf = RbConfig::CONFIG.merge('hdrdir' => $hdrdir.quote, 'srcdir' => $srcdir.quote, 'arch_hdrdir' => $arch_hdrdir.quote, 'top_srcdir' => $top_srcdir.quote) if $universal and (arch_flag = conf['ARCH_FLAG']) and !arch_flag.empty? conf['ARCH_FLAG'] = arch_flag.gsub(/(?:\G|\s)-arch\s+\S+/, '') end RbConfig::("$(CPP) #$INCFLAGS #$CPPFLAGS #$CFLAGS #{opt} #{CONFTEST_C} #{outfile}", conf) end |
#cpp_include(header) ⇒ Object
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# File 'lib/mkmf.rb', line 595 def cpp_include(header) if header header = [header] unless header.kind_of? Array header.map {|h| String === h ? "#include <#{h}>\n" : h}.join else "" end end |
#create_header(header = "extconf.h") ⇒ Object
Generates a header file consisting of the various macro definitions generated by other methods such as have_func and have_header. These are then wrapped in a custom #ifndef
based on the header
file name, which defaults to “extconf.h”.
For example:
# extconf.rb
require 'mkmf'
have_func('realpath')
have_header('sys/utime.h')
create_header
create_makefile('foo')
The above script would generate the following extconf.h file:
#ifndef EXTCONF_H
#define EXTCONF_H
#define HAVE_REALPATH 1
#define HAVE_SYS_UTIME_H 1
#endif
Given that the create_header method generates a file based on definitions set earlier in your extconf.rb file, you will probably want to make this one of the last methods you call in your script.
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# File 'lib/mkmf.rb', line 1657 def create_header(header = "extconf.h") "creating %s\n", header sym = header.tr_cpp hdr = ["#ifndef #{sym}\n#define #{sym}\n"] for line in $defs case line when /^-D([^=]+)(?:=(.*))?/ hdr << "#define #$1 #{$2 ? Shellwords.shellwords($2)[0].gsub(/(?=\t+)/, "\\\n") : 1}\n" when /^-U(.*)/ hdr << "#undef #$1\n" end end hdr << "#endif\n" hdr = hdr.join("") log_src(hdr, "#{header} is") unless (IO.read(header) == hdr rescue false) open(header, "wb") do |hfile| hfile.write(hdr) end end $extconf_h = header end |
#create_makefile(target, srcprefix = nil) ⇒ Object
Generates the Makefile for your extension, passing along any options and preprocessor constants that you may have generated through other methods.
The target
name should correspond the name of the global function name defined within your C extension, minus the Init_
. For example, if your C extension is defined as Init_foo
, then your target would simply be “foo”.
If any “/” characters are present in the target name, only the last name is interpreted as the target name, and the rest are considered toplevel directory names, and the generated Makefile will be altered accordingly to follow that directory structure.
For example, if you pass “test/foo” as a target name, your extension will be installed under the “test” directory. This means that in order to load the file within a Ruby program later, that directory structure will have to be followed, e.g. require 'test/foo'
.
The srcprefix
should be used when your source files are not in the same directory as your build script. This will not only eliminate the need for you to manually copy the source files into the same directory as your build script, but it also sets the proper target_prefix
in the generated Makefile.
Setting the target_prefix
will, in turn, install the generated binary in a directory under your RbConfig::CONFIG['sitearchdir']
that mimics your local filesystem when you run make install
.
For example, given the following file tree:
ext/
extconf.rb
test/
foo.c
And given the following code:
create_makefile('test/foo', 'test')
That will set the target_prefix
in the generated Makefile to “test”. That, in turn, will create the following file tree when installed via the make install
command:
/path/to/ruby/sitearchdir/test/foo.so
It is recommended that you use this approach to generate your makefiles, instead of copying files around manually, because some third party libraries may depend on the target_prefix
being set properly.
The srcprefix
argument can be used to override the default source directory, i.e. the current directory. It is included as part of the VPATH
and added to the list of INCFLAGS
.
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# File 'lib/mkmf.rb', line 2111 def create_makefile(target, srcprefix = nil) $target = target libpath = $DEFLIBPATH|$LIBPATH "creating Makefile\n" MakeMakefile.rm_f "#{CONFTEST}*" if CONFIG["DLEXT"] == $OBJEXT for lib in libs = $libs.split lib.sub!(/-l(.*)/, %%"lib\\1.#{$LIBEXT}"%) end $defs.push(format("-DEXTLIB='%s'", libs.join(","))) end if target.include?('/') target_prefix, target = File.split(target) target_prefix[0,0] = '/' else target_prefix = "" end srcprefix ||= "$(srcdir)/#{srcprefix}".chomp('/') RbConfig.(srcdir = srcprefix.dup) ext = ".#{$OBJEXT}" orig_srcs = Dir[File.join(srcdir, "*.{#{SRC_EXT.join(%q{,})}}")] if not $objs srcs = $srcs || orig_srcs objs = srcs.inject(Hash.new {[]}) {|h, f| h[File.basename(f, ".*") << ext] <<= f; h} $objs = objs.keys unless objs.delete_if {|b, f| f.size == 1}.empty? dups = objs.sort.map {|b, f| "#{b[/.*\./]}{#{f.collect {|n| n[/([^.]+)\z/]}.join(',')}}" } abort "source files duplication - #{dups.join(", ")}" end else $objs.collect! {|o| File.basename(o, ".*") << ext} unless $OBJEXT == "o" srcs = $srcs || $objs.collect {|o| o.chomp(ext) << ".c"} end $srcs = srcs hdrs = Dir[File.join(srcdir, "*.{#{HDR_EXT.join(%q{,})}}")] target = nil if $objs.empty? if target and EXPORT_PREFIX if File.exist?(File.join(srcdir, target + '.def')) deffile = "$(srcdir)/$(TARGET).def" unless EXPORT_PREFIX.empty? makedef = %{-pe "$_.sub!(/^(?=\\w)/,'#{EXPORT_PREFIX}') unless 1../^EXPORTS$/i"} end else makedef = %{-e "puts 'EXPORTS', '$(TARGET_ENTRY)'"} end if makedef $cleanfiles << '$(DEFFILE)' origdef = deffile deffile = "$(TARGET)-$(arch).def" end end origdef ||= '' if $extout and $INSTALLFILES $cleanfiles.concat($INSTALLFILES.collect {|files, dir|File.join(dir, files.sub(/\A\.\//, ''))}) $distcleandirs.concat($INSTALLFILES.collect {|files, dir| dir}) end if $extmk and $static $defs << "-DRUBY_EXPORT=1" end if $extmk and not $extconf_h create_header end libpath = libpathflag(libpath) dllib = target ? "$(TARGET).#{CONFIG['DLEXT']}" : "" staticlib = target ? "$(TARGET).#$LIBEXT" : "" mfile = open("Makefile", "wb") conf = configuration(srcprefix) conf = yield(conf) if block_given? mfile.puts(conf) mfile.print " libpath = #{($DEFLIBPATH|$LIBPATH).join(" ")} LIBPATH = #{libpath} DEFFILE = #{deffile} CLEANFILES = #{$cleanfiles.join(' ')} DISTCLEANFILES = #{$distcleanfiles.join(' ')} DISTCLEANDIRS = #{$distcleandirs.join(' ')} extout = #{$extout && $extout.quote} extout_prefix = #{$extout_prefix} target_prefix = #{target_prefix} LOCAL_LIBS = #{$LOCAL_LIBS} LIBS = #{$LIBRUBYARG} #{$libs} #{$LIBS} ORIG_SRCS = #{orig_srcs.collect(&File.method(:basename)).join(' ')} SRCS = $(ORIG_SRCS) #{(srcs - orig_srcs).collect(&File.method(:basename)).join(' ')} OBJS = #{$objs.join(" ")} HDRS = #{hdrs.map{|h| '$(srcdir)/' + File.basename(h)}.join(' ')} TARGET = #{target} TARGET_NAME = #{target && target[/\A\w+/]} TARGET_ENTRY = #{EXPORT_PREFIX || ''}Init_$(TARGET_NAME) DLLIB = #{dllib} EXTSTATIC = #{$static || ""} STATIC_LIB = #{staticlib unless $static.nil?} #{!$extout && defined?($installed_list) ? "INSTALLED_LIST = #{$installed_list}\n" : ""} TIMESTAMP_DIR = #{$extout ? '$(extout)/.timestamp' : '.'} " #" # TODO: fixme install_dirs.each {|d| mfile.print("%-14s= %s\n" % d) if /^[[:upper:]]/ =~ d[0]} n = ($extout ? '$(RUBYARCHDIR)/' : '') + '$(TARGET)' mfile.print " TARGET_SO = #{($extout ? '$(RUBYARCHDIR)/' : '')}$(DLLIB) CLEANLIBS = #{n}.#{CONFIG['DLEXT']} #{config_string('cleanlibs') {|t| t.gsub(/\$\*/) {n}}} CLEANOBJS = *.#{$OBJEXT} #{config_string('cleanobjs') {|t| t.gsub(/\$\*/, "$(TARGET)#{deffile ? '-$(arch)': ''}")} if target} *.bak all: #{$extout ? "install" : target ? "$(DLLIB)" : "Makefile"} static: $(STATIC_LIB)#{$extout ? " install-rb" : ""} .PHONY: all install static install-so install-rb .PHONY: clean clean-so clean-static clean-rb " mfile.print CLEANINGS fsep = config_string('BUILD_FILE_SEPARATOR') {|s| s unless s == "/"} if fsep sep = ":/=#{fsep}" fseprepl = proc {|s| s = s.gsub("/", fsep) s = s.gsub(/(\$\(\w+)(\))/) {$1+sep+$2} s = s.gsub(/(\$\{\w+)(\})/) {$1+sep+$2} } rsep = ":#{fsep}=/" else fseprepl = proc {|s| s} sep = "" rsep = "" end dirs = [] mfile.print "install: install-so install-rb\n\n" sodir = (dir = "$(RUBYARCHDIR)").dup mfile.print("install-so: ") if target f = "$(DLLIB)" dest = "#{dir}/#{f}" if $extout mfile.puts dest mfile.print "clean-so::\n" mfile.print "\t-$(Q)$(RM) #{fseprepl[dest]}\n" mfile.print "\t-$(Q)$(RMDIRS) #{fseprepl[dir]}#{$ignore_error}\n" else mfile.print "#{f} #{(dir, target_prefix)}\n" mfile.print "\t$(INSTALL_PROG) #{fseprepl[f]} #{dir}\n" if defined?($installed_list) mfile.print "\t@echo #{dir}/#{File.basename(f)}>>$(INSTALLED_LIST)\n" end end mfile.print "clean-static::\n" mfile.print "\t-$(Q)$(RM) $(STATIC_LIB)\n" else mfile.puts "Makefile" end mfile.print("install-rb: pre-install-rb install-rb-default\n") mfile.print("install-rb-default: pre-install-rb-default\n") mfile.print("pre-install-rb: Makefile\n") mfile.print("pre-install-rb-default: Makefile\n") for sfx, i in [["-default", [["lib/**/*.rb", "$(RUBYLIBDIR)", "lib"]]], ["", $INSTALLFILES]] files = install_files(mfile, i, nil, srcprefix) or next for dir, *files in files unless dirs.include?(dir) dirs << dir mfile.print "pre-install-rb#{sfx}: #{(dir, target_prefix)}\n" end for f in files dest = "#{dir}/#{File.basename(f)}" mfile.print("install-rb#{sfx}: #{dest}\n") mfile.print("#{dest}: #{f} #{(dir, target_prefix)}\n") mfile.print("\t$(Q) $(#{$extout ? 'COPY' : 'INSTALL_DATA'}) #{f} $(@D#{sep})\n") if defined?($installed_list) and !$extout mfile.print("\t@echo #{dest}>>$(INSTALLED_LIST)\n") end if $extout mfile.print("clean-rb#{sfx}::\n") mfile.print("\t-$(Q)$(RM) #{fseprepl[dest]}\n") end end end mfile.print "pre-install-rb#{sfx}:\n" mfile.print("\t$(ECHO) installing#{sfx.sub(/^-/, " ")} #{target} libraries\n") if $extout dirs.uniq! unless dirs.empty? mfile.print("clean-rb#{sfx}::\n") for dir in dirs.sort_by {|d| -d.count('/')} mfile.print("\t-$(Q)$(RMDIRS) #{fseprepl[dir]}#{$ignore_error}\n") end end end end dirs.unshift(sodir) if target and !dirs.include?(sodir) dirs.each do |d| t = (d, target_prefix) mfile.print "#{t}:\n\t$(Q) $(MAKEDIRS) $(@D) #{d}\n\t$(Q) $(TOUCH) $@\n" end mfile.print <<-SITEINSTALL site-install: site-install-so site-install-rb site-install-so: install-so site-install-rb: install-rb SITEINSTALL return unless target mfile.puts SRC_EXT.collect {|e| ".path.#{e} = $(VPATH)"} if $nmake == ?b mfile.print ".SUFFIXES: .#{SRC_EXT.join(' .')} .#{$OBJEXT}\n" mfile.print "\n" compile_command = "\n\t$(ECHO) compiling $(<#{rsep})\n\t$(Q) %s\n\n" CXX_EXT.each do |e| each_compile_rules do |rule| mfile.printf(rule, e, $OBJEXT) mfile.printf(compile_command, COMPILE_CXX) end end C_EXT.each do |e| each_compile_rules do |rule| mfile.printf(rule, e, $OBJEXT) mfile.printf(compile_command, COMPILE_C) end end mfile.print "$(RUBYARCHDIR)/" if $extout mfile.print "$(DLLIB): " mfile.print "$(DEFFILE) " if makedef mfile.print "$(OBJS) Makefile" mfile.print " #{('$(RUBYARCHDIR)', target_prefix)}" if $extout mfile.print "\n" mfile.print "\t$(ECHO) linking shared-object #{target_prefix.sub(/\A\/(.*)/, '\1/')}$(DLLIB)\n" mfile.print "\t-$(Q)$(RM) $(@#{sep})\n" link_so = LINK_SO.gsub(/^/, "\t$(Q) ") if srcs.any?(&%r"\.(?:#{CXX_EXT.join('|')})\z".method(:===)) link_so = link_so.sub(/\bLDSHARED\b/, '\&XX') end mfile.print link_so, "\n\n" unless $static.nil? mfile.print "$(STATIC_LIB): $(OBJS)\n\t-$(Q)$(RM) $(@#{sep})\n\t" mfile.print "$(ECHO) linking static-library $(@#{rsep})\n\t$(Q) " mfile.print "$(AR) #{config_string('ARFLAGS') || 'cru '}$@ $(OBJS)" config_string('RANLIB') do |ranlib| mfile.print "\n\t-$(Q)#{ranlib} $(@) 2> /dev/null || true" end end mfile.print "\n\n" if makedef mfile.print "$(DEFFILE): #{origdef}\n" mfile.print "\t$(ECHO) generating $(@#{rsep})\n" mfile.print "\t$(Q) $(RUBY) #{makedef} #{origdef} > $@\n\n" end depend = File.join(srcdir, "depend") if File.exist?(depend) mfile.print("###\n", *depend_rules(File.read(depend))) else mfile.print "$(OBJS): $(HDRS) $(ruby_headers)\n" end $makefile_created = true ensure mfile.close if mfile end |
#create_tmpsrc(src) ⇒ Object
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# File 'lib/mkmf.rb', line 426 def create_tmpsrc(src) src = "#{COMMON_HEADERS}\n#{src}" src = yield(src) if block_given? src.gsub!(/[ \t]+$/, '') src.gsub!(/\A\n+|^\n+$/, '') src.sub!(/[^\n]\z/, "\\&\n") count = 0 begin open(CONFTEST_C, "wb") do |cfile| cfile.print src end rescue Errno::EACCES if (count += 1) < 5 sleep 0.2 retry end end src end |
#depend_rules(depend) ⇒ Object
Processes the data contents of the “depend” file. Each line of this file is expected to be a file name.
Returns the output of findings, in Makefile format.
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# File 'lib/mkmf.rb', line 2001 def depend_rules(depend) suffixes = [] depout = [] cont = implicit = nil impconv = proc do each_compile_rules {|rule| depout << (rule % implicit[0]) << implicit[1]} implicit = nil end ruleconv = proc do |line| if implicit if /\A\t/ =~ line implicit[1] << line next else impconv[] end end if m = /\A\.(\w+)\.(\w+)(?:\s*:)/.match(line) suffixes << m[1] << m[2] implicit = [[m[1], m[2]], [m.post_match]] next elsif RULE_SUBST and /\A(?!\s*\w+\s*=)[$\w][^#]*:/ =~ line line.gsub!(%r"(\s)(?!\.)([^$(){}+=:\s\/\\,]+)(?=\s|\z)") {$1 + RULE_SUBST % $2} end depout << line end depend.each_line do |line| line.gsub!(/\.o\b/, ".#{$OBJEXT}") line.gsub!(/\{\$\(VPATH\)\}/, "") unless $nmake line.gsub!(/\$\((?:hdr|top)dir\)\/config.h/, $config_h) line.gsub!(%r"\$\(hdrdir\)/(?!ruby(?![^:;/\s]))(?=[-\w]+\.h)", '\&ruby/') if $nmake && /\A\s*\$\(RM|COPY\)/ =~ line line.gsub!(%r"[-\w\./]{2,}"){$&.tr("/", "\\")} line.gsub!(/(\$\((?!RM|COPY)[^:)]+)(?=\))/, '\1:/=\\') end if /(?:^|[^\\])(?:\\\\)*\\$/ =~ line (cont ||= []) << line next elsif cont line = (cont << line).join cont = nil end ruleconv.call(line) end if cont ruleconv.call(cont.join) elsif implicit impconv.call end unless suffixes.empty? depout.unshift(".SUFFIXES: ." + suffixes.uniq.join(" .") + "\n\n") end depout.unshift("$(OBJS): $(RUBY_EXTCONF_H)\n\n") if $extconf_h depout.flatten! depout end |
#dir_config(target, idefault = nil, ldefault = nil) ⇒ Object
Sets a target
name that the user can then use to configure various “with” options with on the command line by using that name. For example, if the target is set to “foo”, then the user could use the --with-foo-dir
command line option.
You may pass along additional “include” or “lib” defaults via the idefault
and ldefault
parameters, respectively.
Note that dir_config only adds to the list of places to search for libraries and include files. It does not link the libraries into your application.
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# File 'lib/mkmf.rb', line 1692 def dir_config(target, idefault=nil, ldefault=nil) if dir = with_config(target + "-dir", (idefault unless ldefault)) defaults = Array === dir ? dir : dir.split(File::PATH_SEPARATOR) idefault = ldefault = nil end idir = with_config(target + "-include", idefault) $arg_config.last[1] ||= "${#{target}-dir}/include" ldir = with_config(target + "-lib", ldefault) $arg_config.last[1] ||= "${#{target}-dir}/#{_libdir_basename}" idirs = idir ? Array === idir ? idir.dup : idir.split(File::PATH_SEPARATOR) : [] if defaults idirs.concat(defaults.collect {|d| d + "/include"}) idir = ([idir] + idirs).compact.join(File::PATH_SEPARATOR) end unless idirs.empty? idirs.collect! {|d| "-I" + d} idirs -= Shellwords.shellwords($CPPFLAGS) unless idirs.empty? $CPPFLAGS = (idirs.quote << $CPPFLAGS).join(" ") end end ldirs = ldir ? Array === ldir ? ldir.dup : ldir.split(File::PATH_SEPARATOR) : [] if defaults ldirs.concat(defaults.collect {|d| "#{d}/#{_libdir_basename}"}) ldir = ([ldir] + ldirs).compact.join(File::PATH_SEPARATOR) end $LIBPATH = ldirs | $LIBPATH [idir, ldir] end |
#dummy_makefile(srcdir) ⇒ Object
creates a stub Makefile.
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# File 'lib/mkmf.rb', line 1971 def dummy_makefile(srcdir) configuration(srcdir) << <<RULES << CLEANINGS CLEANFILES = #{$cleanfiles.join(' ')} DISTCLEANFILES = #{$distcleanfiles.join(' ')} all install static install-so install-rb: Makefile .PHONY: all install static install-so install-rb .PHONY: clean clean-so clean-static clean-rb RULES end |
#each_compile_rules ⇒ Object
:nodoc:
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# File 'lib/mkmf.rb', line 1983 def each_compile_rules # :nodoc: vpath_splat = /\$\(\*VPATH\*\)/ COMPILE_RULES.each do |rule| if vpath_splat =~ rule $VPATH.each do |path| yield rule.sub(vpath_splat) {path} end else yield rule end end end |
#egrep_cpp(pat, src, opt = "", &b) ⇒ Object
Returns whether or not the src
can be preprocessed with the C preprocessor and matches with pat
.
If a block given, it is called with the source before compilation. You can modify the source in the block.
pat
-
a Regexp or a String
src
-
a String which contains a C source
opt
-
a String which contains preprocessor options
NOTE: When pat is a Regexp the matching will be checked in process, otherwise egrep(1) will be invoked to check it.
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# File 'lib/mkmf.rb', line 782 def egrep_cpp(pat, src, opt = "", &b) src = create_tmpsrc(src, &b) xpopen(cpp_command('', opt)) do |f| if Regexp === pat puts(" ruby -ne 'print if #{pat.inspect}'") f.grep(pat) {|l| puts "#{f.lineno}: #{l}" return true } false else puts(" egrep '#{pat}'") begin stdin = $stdin.dup $stdin.reopen(f) system("egrep", pat) ensure $stdin.reopen(stdin) end end end ensure MakeMakefile.rm_f "#{CONFTEST}*" log_src(src) end |
#enable_config(config, default = nil) ⇒ Object
Tests for the presence of an --enable-
config or --disable-
config option. Returns true
if the enable option is given, false
if the disable option is given, and the default value otherwise.
This can be useful for adding custom definitions, such as debug information.
Example:
if enable_config("debug")
$defs.push("-DOSSL_DEBUG") unless $defs.include? "-DOSSL_DEBUG"
end
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# File 'lib/mkmf.rb', line 1619 def enable_config(config, default=nil) if arg_config("--enable-"+config) true elsif arg_config("--disable-"+config) false elsif block_given? yield(config, default) else return default end end |
#find_executable(bin, path = nil) ⇒ Object
Searches for the executable bin
on path
. The default path is your PATH
environment variable. If that isn’t defined, it will resort to searching /usr/local/bin, /usr/ucb, /usr/bin and /bin.
If found, it will return the full path, including the executable name, of where it was found.
Note that this method does not actually affect the generated Makefile.
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# File 'lib/mkmf.rb', line 1549 def find_executable(bin, path = nil) checking_for (bin, path) do find_executable0(bin, path) end end |
#find_executable0(bin, path = nil) ⇒ Object
This method is used internally by the find_executable method.
Internal use only.
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# File 'lib/mkmf.rb', line 1505 def find_executable0(bin, path = nil) executable_file = proc do |name| begin stat = File.stat(name) rescue SystemCallError else next name if stat.file? and stat.executable? end end exts = config_string('EXECUTABLE_EXTS') {|s| s.split} || config_string('EXEEXT') {|s| [s]} if File.(bin) == bin return bin if executable_file.call(bin) if exts exts.each {|ext| executable_file.call(file = bin + ext) and return file} end return nil end if path ||= ENV['PATH'] path = path.split(File::PATH_SEPARATOR) else path = %w[/usr/local/bin /usr/ucb /usr/bin /bin] end file = nil path.each do |dir| return file if executable_file.call(file = File.join(dir, bin)) if exts exts.each {|ext| executable_file.call(ext = file + ext) and return ext} end end nil end |
#find_header(header, *paths) ⇒ Object
Instructs mkmf to search for the given header
in any of the paths
provided, and returns whether or not it was found in those paths.
If the header is found then the path it was found on is added to the list of included directories that are sent to the compiler (via the -I
switch).
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# File 'lib/mkmf.rb', line 1116 def find_header(header, *paths) = (header, paths) header = cpp_include(header) checking_for do if try_header(header) true else found = false paths.each do |dir| opt = "-I#{dir}".quote if try_header(header, opt) $INCFLAGS << " " << opt found = true break end end found end end end |
#find_library(lib, func, *paths, &b) ⇒ Object
Returns whether or not the entry point func
can be found within the library lib
in one of the paths
specified, where paths
is an array of strings. If func
is nil
, then the main()
function is used as the entry point.
If lib
is found, then the path it was found on is added to the list of library paths searched and linked against.
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# File 'lib/mkmf.rb', line 991 def find_library(lib, func, *paths, &b) func = "main" if !func or func.empty? lib = with_config(lib+'lib', lib) paths = paths.collect {|path| path.split(File::PATH_SEPARATOR)}.flatten checking_for (func.funcall_style, LIBARG%lib) do libpath = $LIBPATH libs = append_library($libs, lib) begin until r = try_func(func, libs, &b) or paths.empty? $LIBPATH = libpath | [paths.shift] end if r $libs = libs libpath = nil end ensure $LIBPATH = libpath if libpath end r end end |
#find_type(type, opt, *headers, &b) ⇒ Object
Returns where the static type type
is defined.
You may also pass additional flags to opt
which are then passed along to the compiler.
See also have_type
.
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# File 'lib/mkmf.rb', line 1213 def find_type(type, opt, *headers, &b) opt ||= "" fmt = "not found" def fmt.%(x) x ? x.respond_to?(:join) ? x.join(",") : x : self end checking_for (type, nil, opt), fmt do headers.find do |h| try_type(type, h, opt, &b) end end end |
#have_const(const, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the constant const
is defined. You may optionally pass the type
of const
as [const, type]
, such as:
have_const(%w[PTHREAD_MUTEX_INITIALIZER pthread_mutex_t], "pthread.h")
You may also pass additional headers
to check against in addition to the common header files, and additional flags to opt
which are then passed along to the compiler.
If found, a macro is passed as a preprocessor constant to the compiler using the type name, in uppercase, prepended with HAVE_CONST_
.
For example, if have_const('foo')
returned true, then the HAVE_CONST_FOO
preprocessor macro would be passed to the compiler.
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# File 'lib/mkmf.rb', line 1261 def have_const(const, headers = nil, opt = "", &b) checking_for ([*const].compact.join(' '), headers, opt) do try_const(const, headers, opt, &b) end end |
#have_devel? ⇒ Boolean
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# File 'lib/mkmf.rb', line 446 def have_devel? unless defined? $have_devel $have_devel = true $have_devel = try_link(MAIN_DOES_NOTHING) end $have_devel end |
#have_framework(fw, &b) ⇒ Object
Returns whether or not the given framework
can be found on your system. If found, a macro is passed as a preprocessor constant to the compiler using the framework name, in uppercase, prepended with HAVE_FRAMEWORK_
.
For example, if have_framework('Ruby')
returned true, then the HAVE_FRAMEWORK_RUBY
preprocessor macro would be passed to the compiler.
If fw
is a pair of the framework name and its header file name that header file is checked, instead of the normally used header file which is named same as the framework.
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# File 'lib/mkmf.rb', line 1087 def have_framework(fw, &b) if Array === fw fw, header = *fw else header = "#{fw}.h" end checking_for fw do src = cpp_include("#{fw}/#{header}") << "\n" "int main(void){return 0;}" opt = " -framework #{fw}" if try_link(src, "-ObjC#{opt}", &b) $defs.push(format("-DHAVE_FRAMEWORK_%s", fw.tr_cpp)) # TODO: non-worse way than this hack, to get rid of separating # option and its argument. $LDFLAGS << " -ObjC" unless /(\A|\s)-ObjC(\s|\z)/ =~ $LDFLAGS $LIBS << opt true else false end end end |
#have_func(func, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the function func
can be found in the common header files, or within any headers
that you provide. If found, a macro is passed as a preprocessor constant to the compiler using the function name, in uppercase, prepended with HAVE_
.
To check functions in an additional library, you need to check that library first using have_library()
. The func
shall be either mere function name or function name with arguments.
For example, if have_func('foo')
returned true
, then the HAVE_FOO
preprocessor macro would be passed to the compiler.
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# File 'lib/mkmf.rb', line 1025 def have_func(func, headers = nil, opt = "", &b) checking_for (func.funcall_style, headers, opt) do if try_func(func, $libs, headers, opt, &b) $defs << "-DHAVE_#{func.sans_arguments.tr_cpp}" true else false end end end |
#have_header(header, preheaders = nil, opt = "", &b) ⇒ Object
Returns whether or not the given header
file can be found on your system. If found, a macro is passed as a preprocessor constant to the compiler using the header file name, in uppercase, prepended with HAVE_
.
For example, if have_header('foo.h')
returned true, then the HAVE_FOO_H
preprocessor macro would be passed to the compiler.
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# File 'lib/mkmf.rb', line 1065 def have_header(header, preheaders = nil, opt = "", &b) checking_for header do if try_header(cpp_include(preheaders)+cpp_include(header), opt, &b) $defs.push(format("-DHAVE_%s", header.tr_cpp)) true else false end end end |
#have_library(lib, func = nil, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the given entry point func
can be found within lib
. If func
is nil
, the main()
entry point is used by default. If found, it adds the library to list of libraries to be used when linking your extension.
If headers
are provided, it will include those header files as the header files it looks in when searching for func
.
The real name of the library to be linked can be altered by --with-FOOlib
configuration option.
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# File 'lib/mkmf.rb', line 965 def have_library(lib, func = nil, headers = nil, opt = "", &b) func = "main" if !func or func.empty? lib = with_config(lib+'lib', lib) checking_for (func.funcall_style, LIBARG%lib, opt) do if COMMON_LIBS.include?(lib) true else libs = append_library($libs, lib) if try_func(func, libs, headers, opt, &b) $libs = libs true else false end end end end |
#have_macro(macro, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not macro
is defined either in the common header files or within any headers
you provide.
Any options you pass to opt
are passed along to the compiler.
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# File 'lib/mkmf.rb', line 948 def have_macro(macro, headers = nil, opt = "", &b) checking_for (macro, headers, opt) do macro_defined?(macro, cpp_include(headers), opt, &b) end end |
#have_struct_member(type, member, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the struct of type type
contains member
. If it does not, or the struct type can’t be found, then false is returned. You may optionally specify additional headers
in which to look for the struct (in addition to the common header files).
If found, a macro is passed as a preprocessor constant to the compiler using the type name and the member name, in uppercase, prepended with HAVE_
.
For example, if have_struct_member('struct foo', 'bar')
returned true, then the HAVE_STRUCT_FOO_BAR
preprocessor macro would be passed to the compiler.
HAVE_ST_BAR
is also defined for backward compatibility.
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# File 'lib/mkmf.rb', line 1152 def have_struct_member(type, member, headers = nil, opt = "", &b) checking_for ("#{type}.#{member}", headers) do if try_compile(<<"SRC", opt, &b) #{cpp_include(headers)} /*top*/ int s = (char *)&((#{type}*)0)->#{member} - (char *)0; #{MAIN_DOES_NOTHING} SRC $defs.push(format("-DHAVE_%s_%s", type.tr_cpp, member.tr_cpp)) $defs.push(format("-DHAVE_ST_%s", member.tr_cpp)) # backward compatibility true else false end end end |
#have_type(type, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the static type type
is defined. You may optionally pass additional headers
to check against in addition to the common header files.
You may also pass additional flags to opt
which are then passed along to the compiler.
If found, a macro is passed as a preprocessor constant to the compiler using the type name, in uppercase, prepended with HAVE_TYPE_
.
For example, if have_type('foo')
returned true, then the HAVE_TYPE_FOO
preprocessor macro would be passed to the compiler.
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# File 'lib/mkmf.rb', line 1200 def have_type(type, headers = nil, opt = "", &b) checking_for (type, headers, opt) do try_type(type, headers, opt, &b) end end |
#have_typeof? ⇒ Boolean
Used internally by the what_type? method to check if the typeof GCC extension is available.
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# File 'lib/mkmf.rb', line 1432 def have_typeof? return $typeof if defined?($typeof) $typeof = %w[__typeof__ typeof].find do |t| try_compile(<<SRC) int rbcv_foo; #{t}(rbcv_foo) rbcv_bar; SRC end end |
#have_var(var, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the variable var
can be found in the common header files, or within any headers
that you provide. If found, a macro is passed as a preprocessor constant to the compiler using the variable name, in uppercase, prepended with HAVE_
.
To check variables in an additional library, you need to check that library first using have_library()
.
For example, if have_var('foo')
returned true, then the HAVE_FOO
preprocessor macro would be passed to the compiler.
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# File 'lib/mkmf.rb', line 1047 def have_var(var, headers = nil, opt = "", &b) checking_for (var, headers, opt) do if try_var(var, headers, opt, &b) $defs.push(format("-DHAVE_%s", var.tr_cpp)) true else false end end end |
#init_mkmf(config = CONFIG, rbconfig = RbConfig::CONFIG) ⇒ Object
:stopdoc:
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# File 'lib/mkmf.rb', line 2385 def init_mkmf(config = CONFIG, rbconfig = RbConfig::CONFIG) $makefile_created = false $arg_config = [] $enable_shared = config['ENABLE_SHARED'] == 'yes' $defs = [] $extconf_h = nil if $warnflags = CONFIG['warnflags'] and CONFIG['GCC'] == 'yes' # turn warnings into errors only for bundled extensions. config['warnflags'] = $warnflags.gsub(/(\A|\s)-Werror[-=]/, '\1-W') RbConfig.(rbconfig['warnflags'] = config['warnflags'].dup) config.each do |key, val| RbConfig.(rbconfig[key] = val.dup) if /warnflags/ =~ val end $warnflags = config['warnflags'] unless $extmk end $CFLAGS = with_config("cflags", arg_config("CFLAGS", config["CFLAGS"])).dup $ARCH_FLAG = with_config("arch_flag", arg_config("ARCH_FLAG", config["ARCH_FLAG"])).dup $CPPFLAGS = with_config("cppflags", arg_config("CPPFLAGS", config["CPPFLAGS"])).dup $LDFLAGS = with_config("ldflags", arg_config("LDFLAGS", config["LDFLAGS"])).dup $INCFLAGS = "-I$(arch_hdrdir)" $INCFLAGS << " -I$(hdrdir)/ruby/backward" unless $extmk $INCFLAGS << " -I$(hdrdir) -I$(srcdir)" $DLDFLAGS = with_config("dldflags", arg_config("DLDFLAGS", config["DLDFLAGS"])).dup $LIBEXT = config['LIBEXT'].dup $OBJEXT = config["OBJEXT"].dup $EXEEXT = config["EXEEXT"].dup $LIBS = "#{config['LIBS']} #{config['DLDLIBS']}" $LIBRUBYARG = "" $LIBRUBYARG_STATIC = config['LIBRUBYARG_STATIC'] $LIBRUBYARG_SHARED = config['LIBRUBYARG_SHARED'] $DEFLIBPATH = [$extmk ? "$(topdir)" : "$(#{config["libdirname"] || "libdir"})"] $DEFLIBPATH.unshift(".") $LIBPATH = [] $INSTALLFILES = [] $NONINSTALLFILES = [/~\z/, /\A#.*#\z/, /\A\.#/, /\.bak\z/i, /\.orig\z/, /\.rej\z/, /\.l[ao]\z/, /\.o\z/] $VPATH = %w[$(srcdir) $(arch_hdrdir)/ruby $(hdrdir)/ruby] $objs = nil $srcs = nil $libs = "" if $enable_shared or RbConfig.(config["LIBRUBY"].dup) != RbConfig.(config["LIBRUBY_A"].dup) $LIBRUBYARG = config['LIBRUBYARG'] end $LOCAL_LIBS = "" $cleanfiles = config_string('CLEANFILES') {|s| Shellwords.shellwords(s)} || [] $cleanfiles << "mkmf.log" $distcleanfiles = config_string('DISTCLEANFILES') {|s| Shellwords.shellwords(s)} || [] $distcleandirs = config_string('DISTCLEANDIRS') {|s| Shellwords.shellwords(s)} || [] $extout ||= nil $extout_prefix ||= nil $arg_config.clear dir_config("opt") end |
#install_dirs(target_prefix = nil) ⇒ Object
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# File 'lib/mkmf.rb', line 179 def install_dirs(target_prefix = nil) if $extout dirs = [ ['BINDIR', '$(extout)/bin'], ['RUBYCOMMONDIR', '$(extout)/common'], ['RUBYLIBDIR', '$(RUBYCOMMONDIR)$(target_prefix)'], ['RUBYARCHDIR', '$(extout)/$(arch)$(target_prefix)'], ['HDRDIR', '$(extout)/include/ruby$(target_prefix)'], ['ARCHHDRDIR', '$(extout)/include/$(arch)/ruby$(target_prefix)'], ['extout', "#$extout"], ['extout_prefix', "#$extout_prefix"], ] elsif $extmk dirs = [ ['BINDIR', '$(bindir)'], ['RUBYCOMMONDIR', '$(rubylibdir)'], ['RUBYLIBDIR', '$(rubylibdir)$(target_prefix)'], ['RUBYARCHDIR', '$(archdir)$(target_prefix)'], ['HDRDIR', '$(rubyhdrdir)/ruby$(target_prefix)'], ['ARCHHDRDIR', '$(rubyhdrdir)/$(arch)/ruby$(target_prefix)'], ] elsif $configure_args.has_key?('--vendor') dirs = [ ['BINDIR', '$(bindir)'], ['RUBYCOMMONDIR', '$(vendordir)$(target_prefix)'], ['RUBYLIBDIR', '$(vendorlibdir)$(target_prefix)'], ['RUBYARCHDIR', '$(vendorarchdir)$(target_prefix)'], ['HDRDIR', '$(rubyhdrdir)/ruby$(target_prefix)'], ['ARCHHDRDIR', '$(rubyhdrdir)/$(arch)/ruby$(target_prefix)'], ] else dirs = [ ['BINDIR', '$(bindir)'], ['RUBYCOMMONDIR', '$(sitedir)$(target_prefix)'], ['RUBYLIBDIR', '$(sitelibdir)$(target_prefix)'], ['RUBYARCHDIR', '$(sitearchdir)$(target_prefix)'], ['HDRDIR', '$(rubyhdrdir)/ruby$(target_prefix)'], ['ARCHHDRDIR', '$(rubyhdrdir)/$(arch)/ruby$(target_prefix)'], ] end dirs << ['target_prefix', (target_prefix ? "/#{target_prefix}" : "")] dirs end |
#install_files(mfile, ifiles, map = nil, srcprefix = nil) ⇒ Object
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# File 'lib/mkmf.rb', line 849 def install_files(mfile, ifiles, map = nil, srcprefix = nil) ifiles or return ifiles.empty? and return srcprefix ||= "$(srcdir)/#{srcprefix}".chomp('/') RbConfig::(srcdir = srcprefix.dup) dirs = [] path = Hash.new {|h, i| h[i] = dirs.push([i])[-1]} ifiles.each do |files, dir, prefix| dir = map_dir(dir, map) prefix &&= %r|\A#{Regexp.quote(prefix)}/?| if /\A\.\// =~ files # install files which are in current working directory. files = files[2..-1] len = nil else # install files which are under the $(srcdir). files = File.join(srcdir, files) len = srcdir.size end f = nil Dir.glob(files) do |fx| f = fx f[0..len] = "" if len case File.basename(f) when *$NONINSTALLFILES next end d = File.dirname(f) d.sub!(prefix, "") if prefix d = (d.empty? || d == ".") ? dir : File.join(dir, d) f = File.join(srcprefix, f) if len path[d] << f end unless len or f d = File.dirname(files) d.sub!(prefix, "") if prefix d = (d.empty? || d == ".") ? dir : File.join(dir, d) path[d] << files end end dirs end |
#install_rb(mfile, dest, srcdir = nil) ⇒ Object
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# File 'lib/mkmf.rb', line 892 def install_rb(mfile, dest, srcdir = nil) install_files(mfile, [["lib/**/*.rb", dest, "lib"]], nil, srcdir) end |
#libpath_env ⇒ Object
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# File 'lib/mkmf.rb', line 367 def libpath_env # used only if native compiling if libpathenv = config_string("LIBPATHENV") pathenv = ENV[libpathenv] libpath = RbConfig.($DEFLIBPATH.join(File::PATH_SEPARATOR)) {libpathenv => [libpath, pathenv].compact.join(File::PATH_SEPARATOR)} else {} end end |
#libpathflag(libpath = $DEFLIBPATH|$LIBPATH) ⇒ Object
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# File 'lib/mkmf.rb', line 506 def libpathflag(libpath=$DEFLIBPATH|$LIBPATH) libpath.map{|x| case x when "$(topdir)", /\A\./ LIBPATHFLAG else LIBPATHFLAG+RPATHFLAG end % x.quote }.join end |
#link_command(ldflags, opt = "", libpath = $DEFLIBPATH|$LIBPATH) ⇒ Object
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# File 'lib/mkmf.rb', line 470 def link_command(ldflags, opt="", libpath=$DEFLIBPATH|$LIBPATH) librubyarg = $extmk ? $LIBRUBYARG_STATIC : "$(LIBRUBYARG)" conf = RbConfig::CONFIG.merge('hdrdir' => $hdrdir.quote, 'src' => "#{CONFTEST_C}", 'arch_hdrdir' => $arch_hdrdir.quote, 'top_srcdir' => $top_srcdir.quote, 'INCFLAGS' => "#$INCFLAGS", 'CPPFLAGS' => "#$CPPFLAGS", 'CFLAGS' => "#$CFLAGS", 'ARCH_FLAG' => "#$ARCH_FLAG", 'LDFLAGS' => "#$LDFLAGS #{ldflags}", 'LOCAL_LIBS' => "#$LOCAL_LIBS #$libs", 'LIBS' => "#{librubyarg} #{opt} #$LIBS") conf['LIBPATH'] = libpathflag(libpath.map {|s| RbConfig::(s.dup, conf)}) RbConfig::(TRY_LINK.dup, conf) end |
#log_src(src, heading = "checked program was") ⇒ Object
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# File 'lib/mkmf.rb', line 412 def log_src(src, heading="checked program was") src = src.split(/^/) fmt = "%#{src.size.to_s.size}d: %s" Logging:: <<"EOM" #{heading}: /* begin */ EOM src.each_with_index {|line, no| Logging:: fmt, no+1, line} Logging:: <<"EOM" /* end */ EOM end |
#macro_defined?(macro, src, opt = "", &b) ⇒ Boolean
This is used internally by the have_macro? method.
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# File 'lib/mkmf.rb', line 809 def macro_defined?(macro, src, opt = "", &b) src = src.sub(/[^\n]\z/, "\\&\n") try_compile(src + <<"SRC", opt, &b) /*top*/ #ifndef #{macro} # error |:/ === #{macro} undefined === /:| #endif SRC end |
#map_dir(dir, map = nil) ⇒ Object
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# File 'lib/mkmf.rb', line 223 def map_dir(dir, map = nil) map ||= INSTALL_DIRS map.inject(dir) {|d, (orig, new)| d.gsub(orig, new)} end |
#merge_libs(*libs) ⇒ Object
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# File 'lib/mkmf.rb', line 280 def merge_libs(*libs) libs.inject([]) do |x, y| y = y.inject([]) {|ary, e| ary.last == e ? ary : ary << e} y.each_with_index do |v, yi| if xi = x.rindex(v) x[(xi+1)..-1] = merge_libs(y[(yi+1)..-1], x[(xi+1)..-1]) x[xi, 0] = y[0...yi] break end end and x.concat(y) x end end |
#message(*s) ⇒ Object
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# File 'lib/mkmf.rb', line 900 def (*s) unless Logging.quiet and not $VERBOSE printf(*s) $stdout.flush end end |
#mkintpath(path) ⇒ Object
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# File 'lib/mkmf.rb', line 1818 def mkintpath(path) path end |
#mkmf_failed(path) ⇒ Object
Returns whether or not the Makefile was successfully generated. If not, the script will abort with an error message.
Internal use only.
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# File 'lib/mkmf.rb', line 2456 def mkmf_failed(path) unless $makefile_created or File.exist?("Makefile") opts = $arg_config.collect {|t, n| "\t#{t}#{n ? "=#{n}" : ""}\n"} abort "*** #{path} failed ***\n" + FailedMessage + opts.join end end |
#modified?(target, times) ⇒ Boolean
Returns time stamp of the target
file if it exists and is newer than or equal to all of times
.
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# File 'lib/mkmf.rb', line 270 def modified?(target, times) (t = File.mtime(target)) rescue return nil Array === times or times = [times] t if times.all? {|n| n <= t} end |
#pkg_config(pkg, option = nil) ⇒ Object
Returns compile/link information about an installed library in a tuple of [cflags, ldflags, libs]
, by using the command found first in the following commands:
-
If
--with-{pkg}-config={command}
is given via command line option:{command} {option}
-
{pkg}-config {option}
-
pkg-config {option} {pkg}
Where option is, for instance, --cflags
.
The values obtained are appended to $CFLAGS, $LDFLAGS and $libs.
If an option
argument is given, the config command is invoked with the option and a stripped output string is returned without modifying any of the global values mentioned above.
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# File 'lib/mkmf.rb', line 1745 def pkg_config(pkg, option=nil) if pkgconfig = with_config("#{pkg}-config") and find_executable0(pkgconfig) # iff package specific config command is given get = proc {|opt| `#{pkgconfig} --#{opt}`.strip} elsif ($PKGCONFIG ||= (pkgconfig = with_config("pkg-config", ("pkg-config" unless CROSS_COMPILING))) && find_executable0(pkgconfig) && pkgconfig) and system("#{$PKGCONFIG} --exists #{pkg}") # default to pkg-config command get = proc {|opt| `#{$PKGCONFIG} --#{opt} #{pkg}`.strip} elsif find_executable0(pkgconfig = "#{pkg}-config") # default to package specific config command, as a last resort. get = proc {|opt| `#{pkgconfig} --#{opt}`.strip} end orig_ldflags = $LDFLAGS if get and option get[option] elsif get and try_ldflags(ldflags = get['libs']) cflags = get['cflags'] libs = get['libs-only-l'] ldflags = (Shellwords.shellwords(ldflags) - Shellwords.shellwords(libs)).quote.join(" ") $CFLAGS += " " << cflags $LDFLAGS = [orig_ldflags, ldflags].join(' ') $libs += " " << libs Logging:: "package configuration for %s\n", pkg Logging:: "cflags: %s\nldflags: %s\nlibs: %s\n\n", cflags, ldflags, libs [cflags, ldflags, libs] else Logging:: "package configuration for %s is not found\n", pkg nil end end |
#relative_from(path, base) ⇒ Object
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# File 'lib/mkmf.rb', line 154 def relative_from(path, base) dir = File.join(path, "") if File.(dir) == File.(dir, base) path else File.join(base, path) end end |
#scalar_ptr_type?(type, member = nil, headers = nil, &b) ⇒ Boolean
Used internally by the what_type? method to determine if type
is a scalar pointer.
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# File 'lib/mkmf.rb', line 1406 def scalar_ptr_type?(type, member = nil, headers = nil, &b) try_compile(<<"SRC", &b) # pointer #{cpp_include(headers)} /*top*/ volatile #{type} conftestval; extern int t(void); #{MAIN_DOES_NOTHING 't'} int t(void) {return (int)(1-*(conftestval#{member ? ".#{member}" : ""}));} SRC end |
#scalar_type?(type, member = nil, headers = nil, &b) ⇒ Boolean
Used internally by the what_type? method to determine if type
is a scalar pointer.
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# File 'lib/mkmf.rb', line 1419 def scalar_type?(type, member = nil, headers = nil, &b) try_compile(<<"SRC", &b) # pointer #{cpp_include(headers)} /*top*/ volatile #{type} conftestval; extern int t(void); #{MAIN_DOES_NOTHING 't'} int t(void) {return (int)(1-(conftestval#{member ? ".#{member}" : ""}));} SRC end |
#split_libs(*strs) ⇒ Object
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# File 'lib/mkmf.rb', line 276 def split_libs(*strs) strs.map {|s| s.split(/\s+(?=-|\z)/)}.flatten end |
#timestamp_file(name, target_prefix = nil) ⇒ Object
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# File 'lib/mkmf.rb', line 1956 def (name, target_prefix = nil) if target_prefix pat = [] install_dirs.each do |n, d| pat << n if /\$\(target_prefix\)\z/ =~ d end name = name.gsub(/\$\((#{pat.join("|")})\)/) {$&+target_prefix} end name = name.gsub(/(\$[({]|[})])|(\/+)|[^-.\w]+/) {$1 ? "" : $2 ? ".-." : "_"} "$(TIMESTAMP_DIR)/.#{name}.time" end |
#try_cflags(flags) ⇒ Object
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# File 'lib/mkmf.rb', line 626 def try_cflags(flags) with_cflags(flags) do try_compile("int main() {return 0;}") end end |
#try_compile(src, opt = "", *opts, &b) ⇒ Object
Returns whether or not the src
can be compiled as a C source. opt
is passed to the C compiler as options. Note that $CFLAGS is also passed to the compiler.
If a block given, it is called with the source before compilation. You can modify the source in the block.
src
-
a String which contains a C source
opt
-
a String which contains compiler options
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# File 'lib/mkmf.rb', line 570 def try_compile(src, opt="", *opts, &b) with_werror(opt, *opts) {|_opt, *_opts| try_do(src, cc_command(_opt), *_opts, &b)} and File.file?("#{CONFTEST}.#{$OBJEXT}") ensure MakeMakefile.rm_f "#{CONFTEST}*" end |
#try_const(const, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the constant const
is defined.
See also have_const
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# File 'lib/mkmf.rb', line 1230 def try_const(const, headers = nil, opt = "", &b) const, type = *const if try_compile(<<"SRC", opt, &b) #{cpp_include(headers)} /*top*/ typedef #{type || 'int'} conftest_type; conftest_type conftestval = #{type ? '' : '(int)'}#{const}; SRC $defs.push(format("-DHAVE_CONST_%s", const.tr_cpp)) true else false end end |
#try_constant(const, headers = nil, opt = "", &b) ⇒ Object
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# File 'lib/mkmf.rb', line 655 def try_constant(const, headers = nil, opt = "", &b) includes = cpp_include(headers) neg = try_static_assert("#{const} < 0", headers, opt) if CROSS_COMPILING if neg const = "-(#{const})" elsif try_static_assert("#{const} > 0", headers, opt) # positive constant elsif try_static_assert("#{const} == 0", headers, opt) return 0 else # not a constant return nil end upper = 1 lower = 0 until try_static_assert("#{const} <= #{upper}", headers, opt) lower = upper upper <<= 1 end return nil unless lower while upper > lower + 1 mid = (upper + lower) / 2 if try_static_assert("#{const} > #{mid}", headers, opt) lower = mid else upper = mid end end upper = -upper if neg return upper else src = %{#{includes} #include <stdio.h> /*top*/ typedef#{neg ? '' : ' unsigned'} #ifdef PRI_LL_PREFIX #define PRI_CONFTEST_PREFIX PRI_LL_PREFIX LONG_LONG #else #define PRI_CONFTEST_PREFIX "l" long #endif conftest_type; conftest_type conftest_const = (conftest_type)(#{const}); int main() {printf("%"PRI_CONFTEST_PREFIX"#{neg ? 'd' : 'u'}\\n", conftest_const); return 0;} } begin if try_link0(src, opt, &b) xpopen("./#{CONFTEST}") do |f| return Integer(f.gets) end end ensure MakeMakefile.rm_f "#{CONFTEST}*" end end nil end |
#try_cpp(src, opt = "", *opts, &b) ⇒ Object
Returns whether or not the src
can be preprocessed with the C preprocessor. opt
is passed to the preprocessor as options. Note that $CFLAGS is also passed to the preprocessor.
If a block given, it is called with the source before preprocessing. You can modify the source in the block.
src
-
a String which contains a C source
opt
-
a String which contains preprocessor options
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# File 'lib/mkmf.rb', line 586 def try_cpp(src, opt="", *opts, &b) try_do(src, cpp_command(CPPOUTFILE, opt), *opts, &b) and File.file?("#{CONFTEST}.i") ensure MakeMakefile.rm_f "#{CONFTEST}*" end |
#try_cppflags(flags) ⇒ Object
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# File 'lib/mkmf.rb', line 612 def try_cppflags(flags) with_cppflags(flags) do try_header("int main() {return 0;}") end end |
#try_do(src, command, *opts, &b) ⇒ Object
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# File 'lib/mkmf.rb', line 454 def try_do(src, command, *opts, &b) unless have_devel? raise <<MSG The compiler failed to generate an executable file. You have to install development tools first. MSG end begin src = create_tmpsrc(src, &b) xsystem(command, *opts) ensure log_src(src) MakeMakefile.rm_rf "#{CONFTEST}.dSYM" end end |
#try_func(func, libs, headers = nil, opt = "", &b) ⇒ Object
You should use have_func
rather than try_func
.
func
-
a String which contains a symbol name
libs
-
a String which contains library names.
headers
-
a String or an Array of strings which contains names of header files.
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# File 'lib/mkmf.rb', line 721 def try_func(func, libs, headers = nil, opt = "", &b) headers = cpp_include(headers) case func when /^&/ decltype = proc {|x|"const volatile void *#{x}"} when /\)$/ call = func else call = "#{func}()" decltype = proc {|x| "void ((*#{x})())"} end if opt and !opt.empty? [[:to_str], [:join, " "], [:to_s]].each do |meth, *args| if opt.respond_to?(meth) break opt = opt.send(meth, *args) end end opt = "#{opt} #{libs}" else opt = libs end decltype && try_link(<<"SRC", opt, &b) or call && try_link(<<"SRC", opt, &b) #{headers} /*top*/ extern int t(void); #{MAIN_DOES_NOTHING 't'} int t(void) { #{call}; return 0; } SRC end |
#try_ldflags(flags) ⇒ Object
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# File 'lib/mkmf.rb', line 640 def try_ldflags(flags) with_ldflags(flags) do try_link("int main() {return 0;}") end end |
#try_link(src, opt = "", *opts, &b) ⇒ Object
Returns whether or not the src
can be compiled as a C source and linked with its depending libraries successfully. opt
is passed to the linker as options. Note that $CFLAGS and $LDFLAGS are also passed to the linker.
If a block given, it is called with the source before compilation. You can modify the source in the block.
src
-
a String which contains a C source
opt
-
a String which contains linker options
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# File 'lib/mkmf.rb', line 555 def try_link(src, opt="", *opts, &b) try_link0(src, opt, *opts, &b) ensure MakeMakefile.rm_f "#{CONFTEST}*", "c0x32*" end |
#try_link0(src, opt = "", *opts, &b) ⇒ Object
:nodoc:
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# File 'lib/mkmf.rb', line 528 def try_link0(src, opt="", *opts, &b) # :nodoc: cmd = link_command("", opt) if $universal require 'tmpdir' Dir.mktmpdir("mkmf_", oldtmpdir = ENV["TMPDIR"]) do |tmpdir| begin ENV["TMPDIR"] = tmpdir try_do(src, cmd, *opts, &b) ensure ENV["TMPDIR"] = oldtmpdir end end else try_do(src, cmd, *opts, &b) end and File.executable?(CONFTEST+$EXEEXT) end |
#try_run(src, opt = "", &b) ⇒ Object
Returns whether or not:
-
the
src
can be compiled as a C source, -
the result object can be linked with its depending libraries successfully,
-
the linked file can be invoked as an executable
-
and the executable exits successfully
opt
is passed to the linker as options. Note that $CFLAGS and $LDFLAGS are also passed to the linker.
If a block given, it is called with the source before compilation. You can modify the source in the block.
src
-
a String which contains a C source
opt
-
a String which contains linker options
Returns true when the executable exits successfully, false when it fails, or nil when preprocessing, compilation or link fails.
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# File 'lib/mkmf.rb', line 838 def try_run(src, opt = "", &b) raise "cannot run test program while cross compiling" if CROSS_COMPILING if try_link0(src, opt, &b) xsystem("./#{CONFTEST}") else nil end ensure MakeMakefile.rm_f "#{CONFTEST}*" end |
#try_signedness(type, member, headers = nil, opts = nil) ⇒ Object
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# File 'lib/mkmf.rb', line 1280 def try_signedness(type, member, headers = nil, opts = nil) raise ArgumentError, "don't know how to tell signedness of members" if member if try_static_assert("(#{type})-1 < 0", headers, opts) return -1 elsif try_static_assert("(#{type})-1 > 0", headers, opts) return +1 end end |
#try_static_assert(expr, headers = nil, opt = "", &b) ⇒ Object
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# File 'lib/mkmf.rb', line 646 def try_static_assert(expr, headers = nil, opt = "", &b) headers = cpp_include(headers) try_compile(<<SRC, opt, &b) #{headers} /*top*/ int conftest_const[(#{expr}) ? 1 : -1]; SRC end |
#try_type(type, headers = nil, opt = "", &b) ⇒ Object
Returns whether or not the static type type
is defined.
See also have_type
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# File 'lib/mkmf.rb', line 1173 def try_type(type, headers = nil, opt = "", &b) if try_compile(<<"SRC", opt, &b) #{cpp_include(headers)} /*top*/ typedef #{type} conftest_type; int conftestval[sizeof(conftest_type)?1:-1]; SRC $defs.push(format("-DHAVE_TYPE_%s", type.tr_cpp)) true else false end end |
#try_var(var, headers = nil, opt = "", &b) ⇒ Object
You should use have_var
rather than try_var
.
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# File 'lib/mkmf.rb', line 759 def try_var(var, headers = nil, opt = "", &b) headers = cpp_include(headers) try_compile(<<"SRC", opt, &b) #{headers} /*top*/ extern int t(void); #{MAIN_DOES_NOTHING 't'} int t(void) { const volatile void *volatile p; p = &(&#{var})[0]; return 0; } SRC end |
#typedef_expr(type, headers) ⇒ Object
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# File 'lib/mkmf.rb', line 1273 def typedef_expr(type, headers) typename, member = type.split('.', 2) prelude = cpp_include(headers).split(/$/) prelude << "typedef #{typename} rbcv_typedef_;\n" return "rbcv_typedef_", member, prelude end |
#what_type?(type, member = nil, headers = nil, &b) ⇒ Boolean
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# File 'lib/mkmf.rb', line 1442 def what_type?(type, member = nil, headers = nil, &b) m = "#{type}" var = val = "*rbcv_var_" func = "rbcv_func_(void)" if member m << "." << member else type, member = type.split('.', 2) end if member val = "(#{var}).#{member}" end prelude = [cpp_include(headers).split(/^/)] prelude << ["typedef #{type} rbcv_typedef_;\n", "extern rbcv_typedef_ *#{func};\n", "static rbcv_typedef_ #{var};\n", ] type = "rbcv_typedef_" fmt = member && !(typeof = have_typeof?) ? "seems %s" : "%s" if typeof var = "*rbcv_member_" func = "rbcv_mem_func_(void)" member = nil type = "rbcv_mem_typedef_" prelude[-1] << "typedef #{typeof}(#{val}) #{type};\n" prelude[-1] << "extern #{type} *#{func};\n" prelude[-1] << "static #{type} #{var};\n" val = var end def fmt.%(x) x ? super : "unknown" end checking_for (m, headers), fmt do if scalar_ptr_type?(type, member, prelude, &b) if try_static_assert("sizeof(*#{var}) == 1", prelude) return "string" end ptr = "*" elsif scalar_type?(type, member, prelude, &b) unless member and !typeof or try_static_assert("(#{type})-1 < 0", prelude) unsigned = "unsigned" end ptr = "" else next end type = UNIVERSAL_INTS.find do |t| pre = prelude unless member pre += [["static #{unsigned} #{t} #{ptr}#{var};\n", "extern #{unsigned} #{t} #{ptr}*#{func};\n"]] end try_static_assert("sizeof(#{ptr}#{val}) == sizeof(#{unsigned} #{t})", pre) end type or next [unsigned, type, ptr].join(" ").strip end end |
#winsep(s) ⇒ Object
Converts forward slashes to backslashes. Aimed at MS Windows.
Internal use only.
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# File 'lib/mkmf.rb', line 1790 def winsep(s) s.tr('/', '\\') end |
#with_cflags(flags) ⇒ Object
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# File 'lib/mkmf.rb', line 618 def with_cflags(flags) cflags = $CFLAGS $CFLAGS = flags ret = yield ensure $CFLAGS = cflags unless ret end |
#with_config(config, default = nil) ⇒ Object
Tests for the presence of a --with-
config or --without-
config option. Returns true
if the with option is given, false
if the without option is given, and the default value otherwise.
This can be useful for adding custom definitions, such as debug information.
Example:
if with_config("debug")
$defs.push("-DOSSL_DEBUG") unless $defs.include? "-DOSSL_DEBUG"
end
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# File 'lib/mkmf.rb', line 1584 def with_config(config, default=nil) config = config.sub(/^--with[-_]/, '') val = arg_config("--with-"+config) do if arg_config("--without-"+config) false elsif block_given? yield(config, default) else break default end end case val when "yes" true when "no" false else val end end |
#with_cppflags(flags) ⇒ Object
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# File 'lib/mkmf.rb', line 604 def with_cppflags(flags) cppflags = $CPPFLAGS $CPPFLAGS = flags ret = yield ensure $CPPFLAGS = cppflags unless ret end |
#with_destdir(dir) ⇒ Object
:stopdoc:
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# File 'lib/mkmf.rb', line 1781 def with_destdir(dir) dir = dir.sub($dest_prefix_pattern, '') /\A\$[\(\{]/ =~ dir ? dir : "$(DESTDIR)"+dir end |
#with_ldflags(flags) ⇒ Object
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# File 'lib/mkmf.rb', line 632 def with_ldflags(flags) ldflags = $LDFLAGS $LDFLAGS = flags ret = yield ensure $LDFLAGS = ldflags unless ret end |
#with_werror(opt, opts = nil) ⇒ Object
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# File 'lib/mkmf.rb', line 517 def with_werror(opt, opts = nil) if opts if opts[:werror] and config_string("WERRORFLAG") {|flag| opt = opt ? "#{opt} #{flag}" : flag} (opts = opts.dup).delete(:werror) end yield(opt, opts) else yield(opt) end end |
#xpopen(command, *mode, &block) ⇒ Object
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# File 'lib/mkmf.rb', line 400 def xpopen command, *mode, &block Logging::open do case mode[0] when nil, /^r/ puts "#{command} |" else puts "| #{command}" end IO.popen(libpath_env, command, *mode, &block) end end |
#xsystem(command, opts = nil) ⇒ Object
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# File 'lib/mkmf.rb', line 378 def xsystem command, opts = nil varpat = /\$\((\w+)\)|\$\{(\w+)\}/ if varpat =~ command vars = Hash.new {|h, k| h[k] = ENV[k]} command = command.dup nil while command.gsub!(varpat) {vars[$1||$2]} end Logging::open do puts command.quote if opts and opts[:werror] result = nil Logging.postpone do |log| result = (system(libpath_env, command) and File.zero?(log.path)) "" end result else system(libpath_env, command) end end end |