From: Leslie Viljoen <leslieviljoen@...>
Date: 2007-06-11T20:06:35+09:00
Subject: Re: Using Rake to build C++

------=_Part_117391_28407362.1181559995109
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

On 6/5/07, Magnus Falk <magnus.falk@gmail.com> wrote:
>
> I'm making myself a build environment and found this Rake thingy that
> seemed just to good to pass upon. But since I don't know any Ruby I'm
> struggling a bit.
>
> I'm making a couple of tasks to compile and link C++ code and it seems
> like I've misunderstood the file task somewhat. In the example code
> below, the compilation and linking is never run, what am I doing wrong?
>
> cppTasks.rb:
> def compileTask inclDirs, flags
>   inclDirs = inclDirs.collect { |dir| '-I' + dir }
>   inclDirs = inclDirs.join(' ')
>   flags = flags.join(' ')
>
>   SRC_FILES.each do |srcFile|
>     objFile = File.join(OBJ_DIR, srcFile.pathmap("%f").ext('o'))
>     file objFile => [srcFile] do
>       sh "g++ #{inclDirs} #{flags} -c #{srcFile} -o #{objFile}"
>     end
>   end
> end
>
> def linkTask libDirs, libs, flags, target
>   libDirs = libDirs.collect { |dir| '-L' + dir}
>   libs = libs.collect { |lib| '-l' + (lib[/lib(.+)\./, 1])}
>
>   flags = flags + ((File.extname(target) == '.so') ? ['-shared'] :
> ['-c'])
>
>   libDirs = libDirs.join(' ')
>   libs = libs.join(' ')
>   flags = flags.join(' ')
>
>   targetFile = File.join(BUILD_DIR, target)
>
>   file targetFile => OBJ_FILES do
>     objFiles = OBJ_FILES.collect { |objFile| objFile + ' ' }
>     sh "g++ #{libDirs} #{libs} #{flags} #{objFiles} -o #{targetFile}"
>   end
> end


Any luck on your own yet?

Take a look at the Rake examples:
http://docs.rubyrake.org/read/chapter/1#page3
http://docs.rubyrake.org/read/chapter/9#page31

You need to make TASKs and FILEs, not just functions,
although each task and file declaration can call functions.

The tutorial is very good and shows a C example.

Les




-- 
I always thought Smalltalk would beat Java, I just didn't know it would be
called 'Ruby' when it did.
-- Kent Beck

------=_Part_117391_28407362.1181559995109--