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extconf.rb
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lib_dir = File.expand_path('../../lib', File.dirname(__FILE__))
$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
require 'rubygems'
require 'mkmf'
require 'date'
module RMagick
class Extconf
require 'rmagick/version'
RMAGICK_VERS = ::Magick::VERSION
MIN_RUBY_VERS = ::Magick::MIN_RUBY_VERSION
MIN_RUBY_VERS_NO = MIN_RUBY_VERS.tr('.','').to_i
attr_reader :headers
def initialize
configure_compile_options
assert_can_compile!
configure_headers
end
def configured_compile_options
{
:magick_config => $magick_config,
:with_magick_wand => $with_magick_wand,
:pkg_config => $pkg_config,
:magick_version => $magick_version,
:local_libs => $LOCAL_LIBS,
:cflags => $CFLAGS,
:cppflags => $CPPFLAGS,
:ldflags => $LDFLAGS,
:defs => $defs,
:config_h => $config_h,
}
end
def configure_headers
#headers = %w{assert.h ctype.h errno.h float.h limits.h math.h stdarg.h stddef.h stdint.h stdio.h stdlib.h string.h time.h}
@headers = %w{assert.h ctype.h stdio.h stdlib.h math.h time.h}
headers << 'stdint.h' if have_header('stdint.h') # defines uint64_t
headers << 'sys/types.h' if have_header('sys/types.h')
if have_header('wand/MagickWand.h')
headers << 'wand/MagickWand.h'
else
exit_failure "\nCan't install RMagick #{RMAGICK_VERS}. Can't find MagickWand.h."
end
end
def configure_compile_options
# 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
unless find_executable(cc)
exit_failure "No C compiler found in ${ENV['PATH']}. See mkmf.log for details."
end
# ugly way to handle which config tool we're going to use...
$magick_config = false
$pkg_config = false
# Check for Magick-config
if find_executable('Magick-config') && !has_graphicsmagick_libmagick_dev_compat?
$magick_config = true
$magick_version = `Magick-config --version`[/^(\d+\.\d+\.\d+)/]
elsif find_executable('pkg-config')
$pkg_config = true
$magick_version = `pkg-config MagickCore --modversion`[/^(\d+\.\d+\.\d+)/]
else
exit_failure "Can't install RMagick #{RMAGICK_VERS}. Can't find Magick-config or pkg-config in #{ENV['PATH']}\n"
end
check_multiple_imagemagick_versions
check_partial_imagemagick_versions
# Ensure minimum ImageMagick version
# Check minimum ImageMagick version if possible
checking_for("outdated ImageMagick version (<= #{Magick::MIN_IM_VERSION})") do
Logging.message("Detected ImageMagick version: #{$magick_version}\n")
if Gem::Version.new($magick_version) < Gem::Version.new(Magick::MIN_IM_VERSION)
exit_failure "Can't install RMagick #{RMAGICK_VERS}. You must have ImageMagick #{Magick::MIN_IM_VERSION} or later.\n"
end
end
# From ImageMagick 6.9 binaries are split to two and we have to use
# MagickWand instead of MagickCore
checking_for('newer version of ImageMagick (>= 6.9)') do
version_data = $magick_version.split('.').map(&:to_i)
$with_magick_wand = version_data[0] > 6 || (version_data[0] == 6 && version_data[1] > 8)
if $with_magick_wand
Logging.message('Detected 6.9+ version, using MagickWand package')
else
Logging.message('Older version detected, using MagickCore package')
end
end
# either set flags using Magick-config, MagickWand-config or pkg-config (new Debian default)
if $with_magick_wand
if $magick_config
# Save flags
$CFLAGS = ENV['CFLAGS'].to_s + ' ' + `MagickWand-config --cflags`.chomp
$CPPFLAGS = ENV['CPPFLAGS'].to_s + ' ' + `MagickWand-config --cppflags`.chomp
$LDFLAGS = ENV['LDFLAGS'].to_s + ' ' + `MagickWand-config --ldflags`.chomp
$LOCAL_LIBS = ENV['LIBS'].to_s + ' ' + `MagickWand-config --libs`.chomp
end
if $pkg_config
# Save flags
$CFLAGS = ENV['CFLAGS'].to_s + ' ' + `pkg-config --cflags MagickWand`.chomp
$CPPFLAGS = ENV['CPPFLAGS'].to_s + ' ' + `pkg-config --cflags MagickWand`.chomp
$LDFLAGS = ENV['LDFLAGS'].to_s + ' ' + `pkg-config --libs MagickWand`.chomp
$LOCAL_LIBS = ENV['LIBS'].to_s + ' ' + `pkg-config --libs MagickWand`.chomp
end
else
if $magick_config
# Save flags
$CFLAGS = ENV['CFLAGS'].to_s + ' ' + `Magick-config --cflags`.chomp
$CPPFLAGS = ENV['CPPFLAGS'].to_s + ' ' + `Magick-config --cppflags`.chomp
$LDFLAGS = ENV['LDFLAGS'].to_s + ' ' + `Magick-config --ldflags`.chomp
$LOCAL_LIBS = ENV['LIBS'].to_s + ' ' + `Magick-config --libs`.chomp
end
if $pkg_config
# Save flags
$CFLAGS = ENV['CFLAGS'].to_s + ' ' + `pkg-config --cflags MagickCore`.chomp
$CPPFLAGS = ENV['CPPFLAGS'].to_s + ' ' + `pkg-config --cflags MagickCore`.chomp
$LDFLAGS = ENV['LDFLAGS'].to_s + ' ' + `pkg-config --libs MagickCore`.chomp
$LOCAL_LIBS = ENV['LIBS'].to_s + ' ' + `pkg-config --libs MagickCore`.chomp
end
end
if RUBY_PLATFORM =~ /darwin/ # osx
set_archflags_for_osx
end
elsif RUBY_PLATFORM =~ /mingw/ # mingw
`identify -version` =~ /Version: ImageMagick (\d+\.\d+\.\d+)-+\d+ /
abort 'Unable to get ImageMagick version' unless $1
$magick_version = $1
unless have_library('CORE_RL_magick_')
search_paths_for_library_for_mingw
end
have_library('X11')
else # mswin
`identify -version` =~ /Version: ImageMagick (\d+\.\d+\.\d+)-+\d+ /
abort 'Unable to get ImageMagick version' unless $1
$magick_version = $1
$CFLAGS = '-W3'
$CPPFLAGS = %Q{-I"C:\\Program Files\\Microsoft Platform SDK for Windows Server 2003 R2\\Include" -I"C:\\Program Files\\ImageMagick-#{$magick_version}-Q8\\include"}
# The /link option is required by the Makefile but causes warnings in the mkmf.log file.
$LDFLAGS = %Q{/link /LIBPATH:"C:\\Program Files\\Microsoft Platform SDK for Windows Server 2003 R2\\Lib" /LIBPATH:"C:\\Program Files\\ImageMagick-#{$magick_version}-Q8\\lib" /LIBPATH:"C:\\ruby\\lib"}
$LOCAL_LIBS = 'CORE_RL_magick_.lib'
have_library('X11')
end
end
# Test for a specific value in an enum type
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
# Test for multiple values of the same enum type
def have_enum_values(enum, values, headers=nil, &b)
values.each do |value|
have_enum_value(enum, value, headers, &b)
end
end
def has_graphicsmagick_libmagick_dev_compat?
config_path = `which Magick-config`.chomp
if File.exist?(config_path) &&
File.symlink?(config_path) &&
File.readlink(config_path) =~ /GraphicsMagick/
msg = 'Found a graphicsmagick-libmagick-dev-compat installation.'
Logging.message msg
message msg+"\n"
true
else
false
end
end
def exit_failure(msg)
Logging.message msg
message msg+"\n"
exit(1)
end
# Seems like lots of people have multiple versions of ImageMagick installed.
def check_multiple_imagemagick_versions
versions = []
path = ENV['PATH'].split(File::PATH_SEPARATOR)
path.each do |dir|
file = File.join(dir, 'Magick-config')
if File.executable? file
vers = `#{file} --version`.chomp.strip
prefix = `#{file} --prefix`.chomp.strip
versions << [vers, prefix, dir]
end
end
versions.uniq!
if 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.message msg
message msg
end
end
# 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).
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 { |arr| arr.empty? }
if 0 < matches.length && 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.message msg
message msg
end
end
# issue #169
# set ARCHFLAGS appropriately for OSX
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|
if fileinfo.include?(arch)
archflags << "-arch #{arch}"
end
end
if archflags.length != 0
$ARCH_FLAG = archflags.join(' ')
end
end
def search_paths_for_library_for_mingw
msg = 'searching PATH for the ImageMagick library...'
Logging.message msg
message msg+"\n"
found_lib = false
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')
if File.exist?(lib_file)
$CPPFLAGS = %Q{-I"#{File.join(dir, 'include')}"}
$LDFLAGS = %Q{-L"#{lib}"}
found_lib = have_library('CORE_RL_magick_')
break if found_lib
end
end
unless 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
end
def assert_can_compile!
assert_not_windows!
assert_minimum_ruby_version!
assert_has_dev_libs!
end
def assert_not_windows!
if RUBY_PLATFORM =~ /mswin/
abort <<END_MSWIN
+----------------------------------------------------------------------------+
| This rmagick gem is for use only on Linux, BSD, OS X, and similar systems |
| that have a gnu or similar toolchain installed. The rmagick-win32 gem is a |
| pre-compiled version of RMagick bundled with ImageMagick for use on |
| Microsoft Windows systems. The rmagick-win32 gem is available on RubyForge.|
| See http://rmagick.rubyforge.org/install-faq.html for more information. |
+----------------------------------------------------------------------------+
END_MSWIN
end
end
def assert_minimum_ruby_version!
unless checking_for("Ruby version >= #{MIN_RUBY_VERS}") do
version = RUBY_VERSION.tr('.','').to_i
version >= MIN_RUBY_VERS_NO
end
exit_failure "Can't install RMagick #{RMAGICK_VERS}. Ruby #{MIN_RUBY_VERS} or later required.\n"
end
end
def assert_has_dev_libs!
if RUBY_PLATFORM !~ /mswin|mingw/
# check for pkg-config if Magick-config doesn't exist
if $magick_config && `Magick-config --libs`[/\bl\s*(MagickCore|Magick)6?\b/]
elsif $pkg_config && `pkg-config --libs MagickCore`[/\bl\s*(MagickCore|Magick)6?\b/]
else
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
end
def create_header_file
have_func('snprintf', headers)
['AcquireImage', # 6.4.1
'AffinityImage', # 6.4.3-6
'AffinityImages', # 6.4.3-6
'AutoGammaImageChannel', # 6.5.5-1
'AutoLevelImageChannel', # 6.5.5-1
'BlueShiftImage', # 6.5.4-3
'ColorMatrixImage', # 6.6.1-0
'ConstituteComponentTerminus', # 6.5.7-9
'DeskewImage', # 6.4.2-5
'DestroyConstitute', # 6.5.7-9(deprecated)
'EncipherImage', # 6.3.8-6
'EqualizeImageChannel', # 6.3.6-9
'EvaluateImages', # 6.8.6-4
'FloodfillPaintImage', # 6.3.7
'FunctionImageChannel', # 6.4.8-8
'GetAuthenticIndexQueue', # 6.4.5-6
'GetAuthenticPixels', # 6.4.5-6
'GetImageAlphaChannel', # 6.3.9-2
'GetMagickFeatures', # 6.5.7-1
'GetVirtualPixels', # 6.4.5-6
'LevelImageColors', # 6.4.2
'LevelColorsImageChannel', # 6.5.6-4
'LevelizeImageChannel', # 6.4.2
'LiquidRescaleImage', # 6.3.8-2
'MagickLibAddendum', # 6.5.9-1
'OpaquePaintImageChannel', # 6.3.7-10
'QueueAuthenticPixels', # 6.4.5-6
'RemapImage', # 6.4.4-0
'RemapImages', # 6.4.4-0
'RemoveImageArtifact', # 6.3.6
'RotationalBlurImage', # 6.8.8-9
'RotationalBlurImageChannel', # 6.8.8-9
'SelectiveBlurImageChannel', # 6.5.0-3
'SetImageAlphaChannel', # 6.3.6-9
'SetImageArtifact', # 6.3.6
'SetMagickMemoryMethods', # 6.4.1
'SparseColorImage', # 6.3.6-?
'StatisticImage', # 6.6.8-6
'SyncAuthenticPixels', # 6.4.5-6
'TransformImageColorspace', # 6.5.1
'TransparentPaintImage', # 6.3.7-10
'TransparentPaintImageChroma' # 6.4.5-6
].each do |func|
have_func(func, headers)
end
checking_for('QueryMagickColorname() new signature') do
if try_compile(<<"SRC")
#{COMMON_HEADERS}
#{cpp_include(headers)}
/*top*/
int main() {
MagickBooleanType okay;
Image *image;
MagickPixelPacket *color;
char *name;
ExceptionInfo *exception;
okay = QueryMagickColorname(image, color, SVGCompliance, name, exception);
return 0;
}
SRC
$defs.push('-DHAVE_NEW_QUERYMAGICKCOLORNAME')
true
else
false
end
end
have_struct_member('Image', 'type', headers) # ???
have_struct_member('DrawInfo', 'kerning', headers) # 6.4.7-8
have_struct_member('DrawInfo', 'interline_spacing', headers) # 6.5.5-8
have_struct_member('DrawInfo', 'interword_spacing', headers) # 6.4.8-0
have_type('DitherMethod', headers) # 6.4.2
have_type('MagickFunction', headers) # 6.4.8-8
have_type('ImageLayerMethod', headers) # 6.3.6 replaces MagickLayerMethod
have_type('long double', headers)
#have_type("unsigned long long", headers)
#have_type("uint64_t", headers)
#have_type("__int64", headers)
#have_type("uintmax_t", headers)
#check_sizeof("unsigned long", headers)
#check_sizeof("Image *", headers)
have_enum_values('AlphaChannelType', ['CopyAlphaChannel', # 6.4.3-7
'BackgroundAlphaChannel', # 6.5.2-5
'RemoveAlphaChannel'], headers) # 6.7.5-1
have_enum_values('CompositeOperator', ['BlurCompositeOp', # 6.5.3-7
'DistortCompositeOp', # 6.5.3-10
'LinearBurnCompositeOp', # 6.5.4-3
'LinearDodgeCompositeOp', # 6.5.4-3
'MathematicsCompositeOp', # 6.5.4-3
'PegtopLightCompositeOp', # 6.5.4-3
'PinLightCompositeOp', # 6.5.4-3
'VividLightCompositeOp'], headers) # 6.5.4-3
have_enum_values('CompressionType', ['DXT1Compression', # 6.3.9-3
'DXT3Compression', # 6.3.9-3
'DXT5Compression', # 6.3.9-3
'ZipSCompression', # 6.5.5-4
'PizCompression', # 6.5.5-4
'Pxr24Compression', # 6.5.5-4
'B44Compression', # 6.5.5-4
'B44ACompression'], headers) # 6.5.5-4
have_enum_values('DistortImageMethod', ['BarrelDistortion', # 6.4.2-5
'BarrelInverseDistortion', # 6.4.3-8
'BilinearForwardDistortion', # 6.5.1-2
'BilinearReverseDistortion', # 6.5.1-2
'DePolarDistortion', # 6.4.2-6
'PolarDistortion', # 6.4.2-6
'PolynomialDistortion', # 6.4.2-4
'ShepardsDistortion'], headers) # 6.4.2-4
have_enum_value('DitherMethod', 'NoDitherMethod', headers) # 6.4.3
have_enum_values('FilterTypes', ['KaiserFilter', # 6.3.6
'WelshFilter', # 6.3.6-4
'ParzenFilter', # 6.3.6-4
'LagrangeFilter', # 6.3.7-2
'BohmanFilter', # 6.3.7-2
'BartlettFilter', # 6.3.7-2
'SentinelFilter'], headers) # 6.3.7-2
have_enum_values('MagickEvaluateOperator', ['PowEvaluateOperator', # 6.4.1-9
'LogEvaluateOperator', # 6.4.2
'ThresholdEvaluateOperator', # 6.4.3
'ThresholdBlackEvaluateOperator', # 6.4.3
'ThresholdWhiteEvaluateOperator', # 6.4.3
'GaussianNoiseEvaluateOperator', # 6.4.3
'ImpulseNoiseEvaluateOperator', # 6.4.3
'LaplacianNoiseEvaluateOperator', # 6.4.3
'MultiplicativeNoiseEvaluateOperator', # 6.4.3
'PoissonNoiseEvaluateOperator', # 6.4.3
'UniformNoiseEvaluateOperator', # 6.4.3
'CosineEvaluateOperator', # 6.4.8-5
'SineEvaluateOperator', # 6.4.8-5
'AddModulusEvaluateOperator'], # 6.4.8-5
headers)
have_enum_values('MagickFunction', ['ArcsinFunction', # 6.5.2-8
'ArctanFunction', # 6.5.2-8
'PolynomialFunction', # 6.4.8-8
'SinusoidFunction'], headers) # 6.4.8-8
have_enum_values('ImageLayerMethod', ['FlattenLayer', # 6.3.6-2
'MergeLayer', # 6.3.6
'MosaicLayer', # 6.3.6-2
'TrimBoundsLayer' ], headers) # 6.4.3-8
have_enum_values('VirtualPixelMethod', ['HorizontalTileVirtualPixelMethod', # 6.4.2-6
'VerticalTileVirtualPixelMethod', # 6.4.2-6
'HorizontalTileEdgeVirtualPixelMethod', # 6.5.0-1
'VerticalTileEdgeVirtualPixelMethod', # 6.5.0-1
'CheckerTileVirtualPixelMethod'], # 6.5.0-1
headers)
# Now test Ruby 1.9.0 features.
headers = ['ruby.h']
if have_header('ruby/io.h')
headers << 'ruby/io.h'
else
headers << 'rubyio.h'
end
have_func('rb_frame_this_func', headers)
# Miscellaneous constants
$defs.push("-DRUBY_VERSION_STRING=\"ruby #{RUBY_VERSION}\"")
$defs.push("-DRMAGICK_VERSION_STRING=\"RMagick #{RMAGICK_VERS}\"")
create_header
end
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.
$config_h = 'Makefile rmagick.h'
create_makefile('RMagick2')
print_summary
end
def print_summary
summary = <<"END_SUMMARY"
#{'=' * 70}
#{DateTime.now.strftime('%a %d%b%y %T')}
This installation of RMagick #{RMAGICK_VERS} is configured for
Ruby #{RUBY_VERSION} (#{RUBY_PLATFORM}) and ImageMagick #{$magick_version}
#{'=' * 70}
END_SUMMARY
Logging.message summary
message summary
end
end
end
extconf = RMagick::Extconf.new
at_exit do
msg = "Configured compile options: #{extconf.configured_compile_options}"
Logging.message msg
message msg+"\n"
end
extconf.create_makefile_file