Added flags_before_libraries to linker

10 files changed, 37 insertions, 25 deletions

diff --git a/build_config.rb b/build_config.rb
index 1c177fdac..1eeff4bf4 100644
--- a/build_config.rb
+++ b/build_config.rb
@@ -29,6 +29,7 @@ MRuby::Build.new do |conf|
   # conf.linker do |linker|
   #   linker.command = ENV['LD'] || 'gcc'
   #   linker.flags = [ENV['LDFLAGS'] || []]
+  #   linker.flags_before_libraries = []
   #   linker.libraries = %w()
   #   linker.library_paths = []
   #   linker.option_library = '-l%s'
diff --git a/doc/compile/README.md b/doc/compile/README.md
index a1c915a0e..05d56064c 100644
--- a/doc/compile/README.md
+++ b/doc/compile/README.md
@@ -118,6 +118,7 @@ Configuration of the Linker binary, flags and library paths.
 conf.linker do |linker|
   linker.command = ...
   linker.flags = ...
+  linker.flags_before_libraries = ...
   linker.libraries = ...
   linker.library_paths = ....
   linker.option_library = ...
diff --git a/tasks/libmruby.rake b/tasks/libmruby.rake
index 108f42f59..4cfebacaf 100644
--- a/tasks/libmruby.rake
+++ b/tasks/libmruby.rake
@@ -2,14 +2,17 @@ MRuby.each_target do
   file libfile("#{build_dir}/lib/libmruby") => libmruby.flatten do |t|
     archiver.run t.name, t.prerequisites
     open("#{build_dir}/lib/libmruby.flags.mak", 'w') do |f|
-      f.puts 'CFLAGS = "%s"' % cc.all_flags.gsub('"', '\\"') 
+      f.puts 'MRUBY_CFLAGS = "%s"' % cc.all_flags.gsub('"', '\\"') 
 
       gem_flags = gems.map { |g| g.linker.flags }
       gem_library_paths = gems.map { |g| g.linker.library_paths }
-      f.puts 'LDFLAGS = "%s"' % linker.all_flags(gem_library_paths, gem_flags).gsub('"', '\\"') 
+      f.puts 'MRUBY_LDFLAGS = "%s"' % linker.all_flags(gem_library_paths, gem_flags).gsub('"', '\\"') 
+
+      gem_flags_before_libraries = gems.map { |g| g.linker.flags_before_libraries }
+      f.puts 'MRUBY_LDFLAGS_BEFORE_LIBS = "%s"' % [linker.flags_before_libraries, gem_flags_before_libraries].flatten.join(' ').gsub('"', '\\"') 
 
       gem_libraries = gems.map { |g| g.linker.libraries }
-      f.puts 'LIBS = "%s"' % linker.library_flags(gem_libraries).gsub('"', '\\"') 
+      f.puts 'MRUBY_LIBS = "%s"' % linker.library_flags(gem_libraries).gsub('"', '\\"') 
     end
   end
 end
diff --git a/tasks/mrbgem_spec.rake b/tasks/mrbgem_spec.rake
index 906f47ad0..612ff242a 100644
--- a/tasks/mrbgem_spec.rake
+++ b/tasks/mrbgem_spec.rake
@@ -6,7 +6,7 @@ module MRuby
     class << self
       attr_accessor :current
     end
-    LinkerConfig = Struct.new(:libraries, :library_paths, :flags) 
+    LinkerConfig = Struct.new(:libraries, :library_paths, :flags, :flags_before_libraries) 
 
     class Specification
       include Rake::DSL
@@ -43,7 +43,7 @@ module MRuby
         MRuby::Build::COMMANDS.each do |command|
           instance_variable_set("@#{command}", @build.send(command).clone)
         end
-        @linker = LinkerConfig.new([], [], [])
+        @linker = LinkerConfig.new([], [], [], [])
 
         @rbfiles = Dir.glob("#{dir}/mrblib/*.rb")
         @objs = Dir.glob("#{dir}/src/*.{c,cpp,m,asm,S}").map do |f|
diff --git a/tasks/mruby_build_commands.rake b/tasks/mruby_build_commands.rake
index 8ffafe9b0..abaf3a72c 100644
--- a/tasks/mruby_build_commands.rake
+++ b/tasks/mruby_build_commands.rake
@@ -48,18 +48,16 @@ module MRuby
 
     def all_flags(_defineds=[], _include_paths=[], _flags=[])
       define_flags = [defines, _defineds].flatten.map{ |d| option_define % d }
-      include_path_flags = [include_paths, _include_paths].flatten.map{ |f| option_include_path % filename(f) }
+      include_path_flags = [include_paths, _include_paths].flatten.map do |f|
+        option_include_path % filename(f)
+      end
       [flags, define_flags, include_path_flags, _flags].flatten.join(' ')
     end
     
     def run(outfile, infile, _defineds=[], _include_paths=[], _flags=[])
       FileUtils.mkdir_p File.dirname(outfile)
-      define_flags = [defines, _defineds].flatten.map{ |d| option_define % d }
-      include_path_flags = [include_paths, _include_paths, File.dirname(infile)].flatten.map do |f|
-        option_include_path % filename(f)
-      end
       _pp "CC #{filename(infile)} > #{filename(outfile)}"
-      _run compile_options, { :flags => (flags + define_flags + include_path_flags + _flags).join(' '),
+      _run compile_options, { :flags => all_flags(_defineds, [_include_paths, File.dirname(infile)], _flags),
                               :infile => filename(infile), :outfile => filename(outfile) }
     end
 
@@ -104,36 +102,42 @@ module MRuby
   end
 
   class Command::Linker < Command
-    attr_accessor :flags, :libraries, :library_paths
+    attr_accessor :flags, :flags_before_libraries, :libraries, :library_paths
     attr_accessor :link_options, :option_library, :option_library_path
 
     def initialize(build)
       super
       @command = ENV['LD'] || 'gcc'
       @flags = (ENV['LDFLAGS'] || [])
+      @flags_before_libraries = []
       @libraries = []
       @library_paths = []
       @option_library = '-l%s'
       @option_library_path = '-L%s'
-      @link_options = "%{flags} -o %{outfile} %{objs} %{libs}"
+      @link_options = "%{flags} -o %{outfile} %{objs} %{flags_before_libraries} %{libs}"
     end
 
     def all_flags(_library_paths=[], _flags=[])
-      library_path_flags = [library_paths, _library_paths].flatten.map{ |f| option_library_path % filename(f) }
+      library_path_flags = [library_paths, _library_paths].flatten.map do |f|
+        option_library_path % filename(f)
+      end
       [flags, library_path_flags, _flags].flatten.join(' ')
     end
 
     def library_flags(_libraries)
-      [libraries, _libraries].flatten.reverse.map{ |d| option_library % d }.join(' ')
+      [libraries, _libraries].flatten.reverse.map do |d|
+        option_library % d
+      end.join(' ')
     end
 
-    def run(outfile, objfiles, _libraries=[], _library_paths=[], _flags=[])
+    def run(outfile, objfiles, _libraries=[], _library_paths=[], _flags=[], _flags_before_libraries=[])
       FileUtils.mkdir_p File.dirname(outfile)
-      library_flags = [libraries, _libraries].flatten.reverse.map{ |d| option_library % d }
-      library_path_flags = [library_paths, _library_paths].flatten.map{ |f| option_library_path % filename(f) }
+      library_flags = [libraries, _libraries].flatten.reverse.map { |d| option_library % d }
+      library_path_flags = [library_paths, _library_paths].flatten.map { |f| option_library_path % filename(f) }
       _pp "LD #{filename(outfile)}"
-      _run link_options, { :flags => (flags + library_path_flags + _flags).join(' '),
+      _run link_options, { :flags => all_flags(_library_paths, _flags),
                            :outfile => filename(outfile) , :objs => filename(objfiles).join(' '),
+                           :flags_before_libraries => [flags_before_libraries, _flags_before_libraries].flatten.join(' '),
                            :libs => library_flags.join(' ') }
     end
   end
diff --git a/tasks/toolchains/gcc.rake b/tasks/toolchains/gcc.rake
index c624c8fc9..3a3485a17 100644
--- a/tasks/toolchains/gcc.rake
+++ b/tasks/toolchains/gcc.rake
@@ -16,6 +16,6 @@ MRuby::Toolchain.new(:gcc) do |conf|
     linker.library_paths = []
     linker.option_library = '-l%s'
     linker.option_library_path = '-L%s'
-    linker.link_options = '%{flags} -o %{outfile} %{objs} %{libs}'
+    linker.link_options = '%{flags} -o %{outfile} %{objs} %{flags_before_libraries} %{libs}'
   end
 end
diff --git a/tasks/toolchains/vs2012.rake b/tasks/toolchains/vs2012.rake
index c3599a59b..108b4333f 100644
--- a/tasks/toolchains/vs2012.rake
+++ b/tasks/toolchains/vs2012.rake
@@ -16,7 +16,7 @@ MRuby::Toolchain.new(:vs2012) do |conf|
     linker.library_paths = %w()
     linker.option_library = '%s'
     linker.option_library_path = '/LIBPATH:%s'
-    linker.link_options = "%{flags} /OUT:%{outfile} %{objs} %{libs}"
+    linker.link_options = "%{flags} /OUT:%{outfile} %{objs} %{flags_before_libraries} %{libs}"
   end
  
   conf.archiver do |archiver|
diff --git a/test/mrbtest.rake b/test/mrbtest.rake
index 76ddc30f8..30444bd98 100644
--- a/test/mrbtest.rake
+++ b/test/mrbtest.rake
@@ -10,11 +10,12 @@ MRuby.each_target do
 
   objs = [objfile("#{build_dir}/#{dir}/driver"), mlib].flatten
 
-  file exec => objs + gems.map(&:testlib) + [libfile("#{build_dir}/lib/libmruby")] do |t|
+  file exec => objs + gems.map(&:testlib).flatten + [libfile("#{build_dir}/lib/libmruby")] do |t|
     gem_flags = gems.map { |g| g.linker.flags }
+    gem_flags_before_libraries = gems.map { |g| g.linker.flags_before_libraries }
     gem_libraries = gems.map { |g| g.linker.libraries }
     gem_library_paths = gems.map { |g| g.linker.library_paths }
-    linker.run t.name, t.prerequisites, gem_libraries, gem_library_paths, gem_flags
+    linker.run t.name, t.prerequisites, gem_libraries, gem_library_paths, gem_flags, gem_flags_before_libraries
   end
 
   file mlib => [clib]
diff --git a/tools/mirb/mirb.rake b/tools/mirb/mirb.rake
index 0c340a2f5..dbce4f180 100644
--- a/tools/mirb/mirb.rake
+++ b/tools/mirb/mirb.rake
@@ -7,9 +7,10 @@ MRuby.each_target do
 
     file exec => objs + [libfile("#{build_dir}/lib/libmruby")] do |t|
       gem_flags = gems.map { |g| g.linker.flags }
+      gem_flags_before_libraries = gems.map { |g| g.linker.flags_before_libraries }
       gem_libraries = gems.map { |g| g.linker.libraries }
       gem_library_paths = gems.map { |g| g.linker.library_paths }
-      linker.run t.name, t.prerequisites, gem_libraries, gem_library_paths, gem_flags
+      linker.run t.name, t.prerequisites, gem_libraries, gem_library_paths, gem_flags, gem_flags_before_libraries
     end
   end
 end
diff --git a/tools/mruby/mruby.rake b/tools/mruby/mruby.rake
index df31b0343..7111dc06d 100644
--- a/tools/mruby/mruby.rake
+++ b/tools/mruby/mruby.rake
@@ -7,9 +7,10 @@ MRuby.each_target do
 
     file exec => objs + [libfile("#{build_dir}/lib/libmruby")] do |t|
       gem_flags = gems.map { |g| g.linker.flags }
+      gem_flags_before_libraries = gems.map { |g| g.linker.flags_before_libraries }
       gem_libraries = gems.map { |g| g.linker.libraries }
       gem_library_paths = gems.map { |g| g.linker.library_paths }
-      linker.run t.name, t.prerequisites, gem_libraries, gem_library_paths, gem_flags
+      linker.run t.name, t.prerequisites, gem_libraries, gem_library_paths, gem_flags, gem_flags_before_libraries
     end
   end
 end