I’m familiarizing myself with Rake (and learning a spot of Ruby while
doing it) by making a build environment for a C++ project I’m doing.
I’ve run into a few issues though…
First off; here’s the code I have so far:
require ‘rake/clean’
PROJ_NAME = “testproj”
BUILD_DIR = ENV[‘BUILD_DIR’]
OBJ_DIR = File.join(BUILD_DIR, PROJ_NAME,
File.expand_path(’.’).pathmap("%f"), ‘objects’)
SRC_FILES = FileList[‘src//.c’]
OBJ_FILES = FileList[File.join(OBJ_DIR + '/*.o’)]
CLEAN.include(OBJ_DIR)
directory OBJ_DIR
def compileTask inclDirs, flags
includes = inclDirs.collect { |dir| ‘-I’ + dir + ’ ’ }
compFlags = flags.collect { |flag| flag + ’ ’ }
SRC_FILES.each do |srcFile|
objFile = File.join(OBJ_DIR, srcFile.pathmap("%f").ext(‘o’))
file objFile => [srcFile] do
sh "g++ #{includes} #{compFlags} -c #{srcFile} -o #{objFile}"
end
end
end
def linkTask depLibDirs, depLibs, flags, target
libDirs = depLibDirs.collect { |dir| ‘-L’ + dir + ’ ’ }
libs = depLibs.collect { |lib| ‘-l’ + (lib[/lib(.+)./, 1]) + ’ ’ }
linkFlags = flags.collect { |flag| flag + ’ ’ }
if (File.extname(target) == ‘.so’) then
linkFlags = linkFlags + [’-shared’ + ’ ‘]
else
linkFlags = linkFlags + [’-c’ + ’ ']
end
targetFile = File.join(BUILD_DIR, target)
file targetFile => OBJ_FILES do
objFiles = OBJ_FILES.collect { |objFile| objFile + ’ ’ }
sh “g++ #{libDirs} #{libs} #{linkFlags} #{objFiles} -o
#{targetFile}”
end
end
#----This here below I would like to have in a separate file
task :default => [:link]
task :compile => [OBJ_DIR] do
inclDirs = [’/tmp/testdir1’, ‘/tmp/testdir2’]
flags = [’-g’, ‘-v’]
compileTask(inclDirs, flags)
end
task :link => [:compile] do
target = ‘libTest.so’
depLibDirs = [’/usr/lib’]
depLibs = []
flags = [’-fpic’]
linkTask(depLibDirs, depLibs, flags, target)
end
And my issues:
1: The file task thingy doesn’t work as I thought it would, but I’m
probably using it wrong. I hope it’s evident from the context what I’m
trying to do though.
2: I have lots of ugly “insert space between the arguments in my
arrays”. How do I do it in a nicer way?
3: I would like to separate the “defined” tasks from the “regular”
ones so that the part furthest down is content of each “satellite”
rakefile which then includes the top part as a kind of library. But
when I tried doing it by simply putting the top part in a file and
then putting ‘require “…/…/cppBuildLib.rb”’ at the top of the
satellite file I got a message that file couldn’t be found (or
something to that effect).
As I said before, I’m learning Rake and Ruby at the same time, so feel
free to point out any oddities or other stuff that could/should be
done differently.