Class: RMagick::Extconf
- Inherits:
-
Object
- Object
- RMagick::Extconf
- Defined in:
- ext/RMagick/extconf.rb
Constant Summary collapse
- RMAGICK_VERS =
::Magick::VERSION
- MIN_RUBY_VERS =
::Magick::MIN_RUBY_VERSION
Instance Attribute Summary collapse
-
#headers ⇒ Object
readonly
Returns the value of attribute headers.
Instance Method Summary collapse
- #assert_can_compile! ⇒ Object
- #assert_has_dev_libs! ⇒ Object
- #assert_minimum_ruby_version! ⇒ Object
-
#check_multiple_imagemagick_versions ⇒ Object
Seems like lots of people have multiple versions of ImageMagick installed.
-
#check_partial_imagemagick_versions ⇒ Object
Ubuntu (maybe other systems) comes with a partial installation of ImageMagick in the prefix /usr (some libraries, no includes, and no binaries).
- #configure_compile_options ⇒ Object
- #configure_headers ⇒ Object
- #configured_compile_options ⇒ Object
- #create_header_file ⇒ Object
- #create_makefile_file ⇒ Object
- #determine_imagemagick_package ⇒ Object
- #exit_failure(msg) ⇒ Object
-
#have_enum_value(enum, value, headers = nil, &b) ⇒ Object
Test for a specific value in an enum type.
-
#have_enum_values(enum, values, headers = nil, &b) ⇒ Object
Test for multiple values of the same enum type.
-
#initialize ⇒ Extconf
constructor
A new instance of Extconf.
- #print_summary ⇒ Object
- #search_paths_for_library_for_windows ⇒ Object
-
#set_archflags_for_osx ⇒ Object
issue #169 set ARCHFLAGS appropriately for OSX.
- #setup_pkg_config_path ⇒ Object
Constructor Details
#initialize ⇒ Extconf
Returns a new instance of Extconf.
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# File 'ext/RMagick/extconf.rb', line 15 def initialize @stdout = $stdout.dup setup_pkg_config_path assert_can_compile! configure_headers end |
Instance Attribute Details
#headers ⇒ Object (readonly)
Returns the value of attribute headers.
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# File 'ext/RMagick/extconf.rb', line 13 def headers @headers end |
Instance Method Details
#assert_can_compile! ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 284 def assert_can_compile! assert_minimum_ruby_version! assert_has_dev_libs! end |
#assert_has_dev_libs! ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 297 def assert_has_dev_libs! return unless RUBY_PLATFORM !~ /mswin|mingw/ unless `pkg-config --libs MagickCore`[/\bl\s*(MagickCore|Magick)6?\b/] exit_failure "Can't install RMagick #{RMAGICK_VERS}. " \ "Can't find the ImageMagick library or one of the dependent libraries. " \ "Check the mkmf.log file for more detailed information.\n" end end |
#assert_minimum_ruby_version! ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 289 def assert_minimum_ruby_version! unless checking_for("Ruby version >= #{MIN_RUBY_VERS}") do Gem::Version.new(RUBY_VERSION) >= Gem::Version.new(MIN_RUBY_VERS) end exit_failure "Can't install RMagick #{RMAGICK_VERS}. Ruby #{MIN_RUBY_VERS} or later required.\n" end end |
#check_multiple_imagemagick_versions ⇒ Object
Seems like lots of people have multiple versions of ImageMagick installed.
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# File 'ext/RMagick/extconf.rb', line 190 def check_multiple_imagemagick_versions versions = [] path = ENV['PATH'].split(File::PATH_SEPARATOR) path.each do |dir| file = File.join(dir, 'Magick-config') next unless File.executable? file vers = `#{file} --version`.chomp.strip prefix = `#{file} --prefix`.chomp.strip versions << [vers, prefix, dir] end versions.uniq! return unless versions.size > 1 msg = "\nWarning: Found more than one ImageMagick installation. This could cause problems at runtime.\n" versions.each do |vers, prefix, dir| msg << " #{dir}/Magick-config reports version #{vers} is installed in #{prefix}\n" end msg << "Using #{versions[0][0]} from #{versions[0][1]}.\n\n" Logging. msg msg end |
#check_partial_imagemagick_versions ⇒ Object
Ubuntu (maybe other systems) comes with a partial installation of ImageMagick in the prefix /usr (some libraries, no includes, and no binaries). This causes problems when /usr/lib is in the path (e.g., using the default Ruby installation).
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# File 'ext/RMagick/extconf.rb', line 217 def check_partial_imagemagick_versions prefix = config_string('prefix') || '' matches = [ prefix + '/lib/lib?agick*', prefix + '/include/ImageMagick', prefix + '/bin/Magick-config' ].map do |file_glob| Dir.glob(file_glob) end matches.delete_if(&:empty?) return unless !matches.empty? && matches.length < 3 msg = "\nWarning: Found a partial ImageMagick installation. Your operating system likely has some built-in ImageMagick libraries but not all of ImageMagick. This will most likely cause problems at both compile and runtime.\nFound partial installation at: " + prefix + "\n" Logging. msg msg end |
#configure_compile_options ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 61 def # Magick-config is not available on Windows if RUBY_PLATFORM !~ /mswin|mingw/ # Check for compiler. Extract first word so ENV['CC'] can be a program name with arguments. config = defined?(RbConfig) ? ::RbConfig : ::Config cc = (ENV['CC'] || config::CONFIG['CC'] || 'gcc').split(' ').first exit_failure "No C compiler found in ${ENV['PATH']}. See mkmf.log for details." unless find_executable(cc) magick_package = determine_imagemagick_package $magick_version = `pkg-config #{magick_package} --modversion`[/^(\d+\.\d+\.\d+)/] check_multiple_imagemagick_versions check_partial_imagemagick_versions # Ensure minimum ImageMagick version # Check minimum ImageMagick version if possible checking_for("outdated ImageMagick version (<= #{Magick::MIN_IM_VERSION})") do Logging.("Detected ImageMagick version: #{$magick_version}\n") exit_failure "Can't install RMagick #{RMAGICK_VERS}. You must have ImageMagick #{Magick::MIN_IM_VERSION} or later.\n" if Gem::Version.new($magick_version) < Gem::Version.new(Magick::MIN_IM_VERSION) end # Save flags $CFLAGS = ENV['CFLAGS'].to_s + ' ' + `pkg-config --cflags #{magick_package}`.chomp $CPPFLAGS = ENV['CPPFLAGS'].to_s + ' ' + `pkg-config --cflags #{magick_package}`.chomp $LDFLAGS = ENV['LDFLAGS'].to_s + ' ' + `pkg-config --libs #{magick_package}`.chomp $LOCAL_LIBS = ENV['LIBS'].to_s + ' ' + `pkg-config --libs #{magick_package}`.chomp set_archflags_for_osx if RUBY_PLATFORM =~ /darwin/ # osx elsif RUBY_PLATFORM =~ /mingw/ # mingw `identify -version` =~ /Version: ImageMagick (\d+\.\d+\.\d+)-+\d+ / abort 'Unable to get ImageMagick version' unless Regexp.last_match(1) $magick_version = Regexp.last_match(1) dir_paths = search_paths_for_library_for_windows $CPPFLAGS = %(-I"#{dir_paths[:include]}") $LDFLAGS = %(-L"#{dir_paths[:lib]}") have_library('CORE_RL_magick_') else # mswin `identify -version` =~ /Version: ImageMagick (\d+\.\d+\.\d+)-+\d+ / abort 'Unable to get ImageMagick version' unless Regexp.last_match(1) $magick_version = Regexp.last_match(1) dir_paths = search_paths_for_library_for_windows $CPPFLAGS << %( -I"#{dir_paths[:include]}") $LDFLAGS << %( -libpath:"#{dir_paths[:lib]}") $LOCAL_LIBS = 'CORE_RL_magick_.lib' end $CFLAGS << (have_macro('__GNUC__') ? ' -std=gnu99' : ' -std=c99') end |
#configure_headers ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 51 def configure_headers @headers = %w[assert.h ctype.h stdio.h stdlib.h math.h time.h sys/types.h] if have_header('magick/MagickCore.h') headers << 'magick/MagickCore.h' else exit_failure "Can't install RMagick #{RMAGICK_VERS}. Can't find magick/MagickCore.h." end end |
#configured_compile_options ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 39 def { magick_version: $magick_version, local_libs: $LOCAL_LIBS, cflags: $CFLAGS, cppflags: $CPPFLAGS, ldflags: $LDFLAGS, defs: $defs, config_h: $config_h } end |
#create_header_file ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 307 def create_header_file [ 'GetImageChannelEntropy', # 6.9.0-0 'SetImageGray' # 6.9.1-10 ].each do |func| have_func(func, headers) end # Miscellaneous constants $defs.push("-DRUBY_VERSION_STRING=\"ruby #{RUBY_VERSION}\"") $defs.push("-DRMAGICK_VERSION_STRING=\"RMagick #{RMAGICK_VERS}\"") if Gem::Version.new($magick_version) >= Gem::Version.new('6.8.9') $defs.push('-DIMAGEMAGICK_GREATER_THAN_EQUAL_6_8_9=1') end if Gem::Version.new($magick_version) >= Gem::Version.new('6.9.0') $defs.push('-DIMAGEMAGICK_GREATER_THAN_EQUAL_6_9_0=1') end create_header end |
#create_makefile_file ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 329 def create_makefile_file create_header_file # Prior to 1.8.5 mkmf duplicated the symbols on the command line and in the # extconf.h header. Suppress that behavior by removing the symbol array. $defs = [] # Force re-compilation if the generated Makefile changed. $config_h = 'Makefile rmagick.h' create_makefile('RMagick2') print_summary end |
#determine_imagemagick_package ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 163 def determine_imagemagick_package unless find_executable('pkg-config') exit_failure "Can't install RMagick #{RMAGICK_VERS}. Can't find pkg-config in #{ENV['PATH']}\n" end packages = `pkg-config --list-all`.scan(/(ImageMagick\-6[\.A-Z0-9]+) .*/).flatten # For ancient version of ImageMagick 6 we need a different regex if packages.empty? packages = `pkg-config --list-all`.scan(/(ImageMagick) .*/).flatten end if packages.empty? exit_failure "Can't install RMagick #{RMAGICK_VERS}. Can't find ImageMagick with pkg-config\n" end if packages.length > 1 package_lines = packages.map { |package| " - #{package}" }.join("\n") msg = "\nWarning: Found more than one ImageMagick installation. This could cause problems at runtime.\n#{package_lines}\n\n" Logging. msg msg end packages.first end |
#exit_failure(msg) ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 146 def exit_failure(msg) msg = "ERROR: #{msg}" Logging. msg @stdout.puts "\n\n" if ENV['NO_COLOR'] @stdout.puts msg else @stdout.print "\e[31m\e[1m#{msg}\e[0m" end @stdout.puts "\n\n" @stdout.flush exit(1) end |
#have_enum_value(enum, value, headers = nil, &b) ⇒ Object
Test for a specific value in an enum type
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# File 'ext/RMagick/extconf.rb', line 123 def have_enum_value(enum, value, headers = nil, &b) checking_for "#{enum}.#{value}" do if try_compile(<<"SRC", &b) #{COMMON_HEADERS} #{cpp_include(headers)} /*top*/ int main() { #{enum} t = #{value}; t = t; return 0; } SRC $defs.push(format('-DHAVE_ENUM_%s', value.upcase)) true else false end end end |
#have_enum_values(enum, values, headers = nil, &b) ⇒ Object
Test for multiple values of the same enum type
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# File 'ext/RMagick/extconf.rb', line 140 def have_enum_values(enum, values, headers = nil, &b) values.each do |value| have_enum_value(enum, value, headers, &b) end end |
#print_summary ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 342 def print_summary summary = <<"END_SUMMARY" #{'=' * 70} #{DateTime.now.strftime('%a %d %b %y %T')} This installation of RMagick #{RMAGICK_VERS} is configured for Ruby #{RUBY_VERSION} (#{RUBY_PLATFORM}) and ImageMagick #{$magick_version} #{'=' * 70} END_SUMMARY Logging. summary summary end |
#search_paths_for_library_for_windows ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 251 def search_paths_for_library_for_windows msg = 'searching PATH for the ImageMagick library...' Logging. msg msg + "\n" found_lib = false dir_paths = {} paths = ENV['PATH'].split(File::PATH_SEPARATOR) paths.each do |dir| lib = File.join(dir, 'lib') lib_file = File.join(lib, 'CORE_RL_magick_.lib') next unless File.exist?(lib_file) dir_paths[:include] = File.join(dir, 'include') dir_paths[:lib] = lib found_lib = true break end return dir_paths if found_lib exit_failure <<END_MINGW Can't install RMagick #{RMAGICK_VERS}. Can't find the ImageMagick library. Retry with '--with-opt-dir' option. Usage: gem install rmagick -- '--with-opt-dir=\"[path to ImageMagick]\"' e.g. gem install rmagick -- '--with-opt-dir=\"C:\Program Files\ImageMagick-6.9.1-Q16\"' END_MINGW end |
#set_archflags_for_osx ⇒ Object
issue #169 set ARCHFLAGS appropriately for OSX
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# File 'ext/RMagick/extconf.rb', line 236 def set_archflags_for_osx archflags = [] fullpath = `which convert` fileinfo = `file #{fullpath}` # default ARCHFLAGS archs = $ARCH_FLAG.scan(/-arch\s+(\S+)/).flatten archs.each do |arch| archflags << "-arch #{arch}" if fileinfo.include?(arch) end $ARCH_FLAG = archflags.join(' ') unless archflags.empty? end |
#setup_pkg_config_path ⇒ Object
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# File 'ext/RMagick/extconf.rb', line 24 def setup_pkg_config_path if find_executable('brew') pkg_config_path = "#{`brew --prefix imagemagick@6`.strip}/lib/pkgconfig" elsif find_executable('pacman') pkg_config_path = '/usr/lib/imagemagick6/pkgconfig' else return end pkg_config_paths = ENV['PKG_CONFIG_PATH'].to_s.split(':') if File.exist?(pkg_config_path) && !pkg_config_paths.include?(pkg_config_path) ENV['PKG_CONFIG_PATH'] = [ENV['PKG_CONFIG_PATH'], pkg_config_path].compact.join(':') end end |