Module: Libyajl2Build

Defined in:
ext/libyajl2/extconf.rb

Defined Under Namespace

Classes: BuildError

Constant Summary collapse

LIBYAJL2_VENDOR_DIR =
File.expand_path("../vendor/yajl", __FILE__).freeze
PREFIX =
File.expand_path("../../../lib/libyajl2/vendored-libyajl2", __FILE__).freeze

Class Method Summary collapse

Class Method Details

.depsObject


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# File 'ext/libyajl2/extconf.rb', line 39

def self.deps
  require "mkmf"
end

.libyajl2_vendor_dirObject


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# File 'ext/libyajl2/extconf.rb', line 31

def self.libyajl2_vendor_dir
  LIBYAJL2_VENDOR_DIR
end

.makemakefilesObject


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# File 'ext/libyajl2/extconf.rb', line 61

def self.makemakefiles
  if RUBY_PLATFORM == "java"
    File.open("Makefile", "w+") do |f|
      f.write <<EOF
CC = gcc
TARGET = libyajl
DLLIB = $(TARGET).so
CFLAGS =  -I. -I../../../../ext/libyajl2 -fPIC -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration  -fPIC -std=c99 -pedantic -Wpointer-arith -Wno-format-y2k -Wstrict-prototypes -Wmissing-declarations -Wnested-externs -Wextra  -Wundef -Wwrite-strings -Wold-style-definition -Wredundant-decls -Wno-unused-parameter -Wno-sign-compare -Wmissing-prototypes -O2 -DNDEBUG
LDFLAGS = -L. -fstack-protector -rdynamic
#LIBS = -lpthread -ldl -lcrypt -lm -lc
LIBS = -lpthread -ldl -lm -lc
OBJS = yajl_alloc.o yajl_tree.o yajl_gen.o yajl_buf.o yajl.o yajl_encode.o yajl_lex.o yajl_parser.o yajl_version.o

all: $(DLLIB)

$(DLLIB): $(OBJS)
\t$(CC) -shared -o $(DLLIB) $(OBJS) $(LDFLAGS) $(LIBS)

%.o: ../../../../ext/libyajl2/%.c
\t$(COMPILE.c) $(OUTPUT_OPTION) $<

install:
\tmkdir -p #{prefix}/lib
\tcp $(DLLIB) #{prefix}/lib/$(DLLIB)
\tmkdir -p #{prefix}/include/yajl
\tcp yajl/*.h #{prefix}/include/yajl
EOF
    end
  else
    deps
    setup_env
    dir_config("libyajl")
    create_makefile("libyajl")

    # on windows the Makefile will try to export Init_libyajl which is wrong because we aren't a ruby lib.
    # i could not figure out how to tell mkmf.rb to stop being so helpful, so instead will just patch it here.
    if windows?
      makefile = IO.read("Makefile")
      makefile.gsub!(/\$\(DEFFILE\)/, "")
      File.open("Makefile", "w+") { |f| f.write(makefile) }
    end

    system("pwd")
    # we cheat and build it right away...
    system("make >make.out 2>&1") || raise # rubinius doesn't like the output this generates
    # ...so we can hack up what install does later and copy over the include files

    File.open("Makefile", "w+") do |f|
      f.write <<EOF
TARGET = libyajl
DLLIB = $(TARGET).#{RbConfig::MAKEFILE_CONFIG['DLEXT']}
all:

EOF
      if windows?
        f.write <<EOF
install:
\tmkdir -p #{prefix}/lib
\tcp libyajl.so #{prefix}/lib/libyajl.so
\tcp libyajldll.a #{prefix}/lib/libyajldll.a
\tcp libyajl.def #{prefix}/lib/libyajl.def
\tmkdir -p #{prefix}/include/yajl
\tcp yajl/*.h #{prefix}/include/yajl
EOF
      else
        f.write <<EOF
install:
\tmkdir -p #{prefix}/lib
\tcp $(DLLIB) #{prefix}/lib/$(DLLIB)
\tmkdir -p #{prefix}/include/yajl
\tcp yajl/*.h #{prefix}/include/yajl
EOF
      end
    end
  end
end

.prefixObject


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# File 'ext/libyajl2/extconf.rb', line 35

def self.prefix
  PREFIX.shellescape
end

.setup_envObject


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# File 'ext/libyajl2/extconf.rb', line 43

def self.setup_env
  RbConfig::MAKEFILE_CONFIG["CC"] = ENV["CC"] if ENV["CC"]

  # set some sane defaults
  if RbConfig::MAKEFILE_CONFIG["CC"] =~ /gcc|clang/
    # magic flags copied from upstream yajl build system (-std=c99 is necessary for older gcc)
    $CFLAGS << " -std=c99 -pedantic -Wpointer-arith -Wno-format-y2k -Wstrict-prototypes -Wmissing-declarations -Wnested-externs -Wextra  -Wundef -Wwrite-strings -Wold-style-definition -Wredundant-decls -Wno-unused-parameter -Wno-sign-compare -Wmissing-prototypes"
    $CFLAGS << " -O2" # match what the upstream uses for optimization
  end

  # create the implib on windows
  if windows?
    $LDFLAGS << " -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--out-implib=libyajldll.a -Wl,--output-def,libyajl.def"
  end

  $CFLAGS << " -DNDEBUG"
end

.windows?Boolean

Returns:

  • (Boolean)

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# File 'ext/libyajl2/extconf.rb', line 27

def self.windows?
  !!(RUBY_PLATFORM =~ /mswin|mingw|cygwin|windows/)
end