From: Patrick Doyle <wpdster@...>
Date: 2008-09-27T01:35:35+09:00
Subject: Re: Problem with rake and dependencies

On 2nd thought, perhaps this thread might help:

http://www.ruby-forum.com/topic/58444

Look for the post from Jim Weirich.

--wpd

> On Fri, Sep 26, 2008 at 9:42 AM, Brock Rycenga <brock.rycenga@gentex.com> wrote:
>> Hello:
>>
>> I am new to rake, and I am stuck on a problem with incremental building.
>> My rakefile does what I would like, for the most part. If I touch a .c
>> file, the rakefile functions properly and only builds the necessary
>> files. However, if I touch the corresponding .h file, my rakefile
>> assumes everything is up-to-date. I am pretty certain that I am not
>> importing/loading my dependency files correctly. Please help.
>>
>> I am using a dependency generation feature that is part of the DSP
>> compiler we are using. The output from the preprocessor creates files
>> with a .pp extension, formatted like so:
>>
>> C:/dir/obj/lcd.obj: C:\dir\lcd.c
>> C:/dir/obj/lcd.obj: C:\dir\lcd.h
>> C:/dir/obj/lcd.obj: C:\dir\lcdpanel.h
>> C:/dir/obj/lcd.obj: C:/CCStudio_v3.3/C6000/cgtools/include/string.h
>> C:/dir/obj/lcd.obj: C:/CCStudio_v3.3/C6000/cgtools/include/linkage.h
>>
>> I decided to copy those files to a file with a .mf extension because I
>> was hoping that the makefile loader would handle things correctly.
>>
>> Below is my rakefile. Notice that I am attempting to import the
>> dependency files within my :build_depend task. Unfortunately, I have no
>> idea what import does, and therefore I have no idea if my dependencies
>> are getting extracted in a way that rake understands.
>>
>> ###############################################################################
>> ###############################################################################
>> ###############################################################################
>> ###############################################################################
>> require 'dsp_build_defs'
>>
>> ## The following require's are actually found in my dsp_build_defs.rb
>> file
>> require 'rake/clean'
>> require 'rake/loaders/makefile'
>> require 'fileutils
>>
>> include DspRakeFileConstants
>>
>> ###############################################################################
>> # Create the list of source files, etc.
>> ###############################################################################
>> #SRC_FILES = FileList["#{DSP_PROJ_ROOT}/**/*.#{C_EXT}"]
>> SRC_FILES = FileList["#{DSP_PROJ_ROOT}/**/*.#{C_EXT}"].reject {|f| f =~
>> /cropped/}
>> DEPEND_FILES = SRC_FILES.ext("#{MF_EXT}")
>> OBJ_FILES = SRC_FILES.pathmap("#{OBJ_DIR}/%n.#{OBJ_EXT}")
>>
>> ###############################################################################
>> # Task definitions
>> ###############################################################################
>> desc 'Default task to build debug version of dsp software'
>> task :default => :debug_build do
>>    OBJ_FILES.each do |srcfile|
>>        #puts "source file: #{srcfile}"
>>    end
>>    DEPEND_FILES.each do |depfile|
>>        #puts "source file: #{depfile}"
>>    end
>> end
>>
>> desc 'Debug_build task that depends on build_depend and build_obj'
>> task :debug_build => [:build_depend, :build_obj] do
>>    puts "almost ready to link..."
>> end
>>
>> desc 'Release_build task - not currently being called'
>> task :release_build => RELEASE_BLD
>>
>> desc 'Build_obj task that depends on the object directory and the object
>> files'
>> task :build_obj => [OBJ_DIR, OBJ_FILES].flatten.uniq
>>
>> desc 'Build_depend task that depends on the dependency files'
>> task :build_depend => DEPEND_FILES do
>>    DEPEND_FILES.each do |dep_file|
>>        puts "Importing #{dep_file}..."
>>        import "#{dep_file}"
>>    end
>> end
>>
>> directory OBJ_DIR
>>
>> ##############################################################################
>> # Rule definitions
>> ##############################################################################
>> rule ".#{DEPEND_EXT}" => ".#{C_EXT}" do |t|
>>    puts "Building dependency file for #{t.source}"
>>    sh "#{COMPILER} #{C_OPTS} #{C_DEPEND_OPTS} #{C_OBJ_DIR}
>> #{C_INC_PATHS} #{C_FLAGS} #{C_TARGET} #{t.source}"
>> end
>>
>> rule ".#{OBJ_EXT}" => lambda{|objfile| find_source(objfile)} do |t|
>>    puts "Building object file for #{t.source}"
>>    sh "#{COMPILER} #{C_OPTS} #{C_OBJ_DIR} #{C_INC_PATHS} #{C_FLAGS}
>> #{C_TARGET} #{t.source}"
>> end
>>
>> rule ".#{MF_EXT}" => ".#{DEPEND_EXT}" do |t|
>>    puts "Copying #{t.source} to #{t.name}"
>>    sh "cp #{t.source} #{t.name}"
>> end
>>
>> rule ".#{BIN_EXT}" do |t|
>>    puts "Linking..."
>> end
>> ###############################################################################
>> ###############################################################################
>> ###############################################################################
>> ###############################################################################
>>
>>
>> Thanks, in advance, for the help!
>>
>>
>> Best Regards,
>> Brock
>> --
>> Posted via http://www.ruby-forum.com/.
>>
>>
>