Re: [Module-build-general] Heirarchical building and testing

[Michael G S. <sc...@po...>]

On Wed, Apr 30, 2003 at 11:14:47AM -0700, David Carmean wrote:
> With MakeMaker, after considerable pain I was able to figure out how 
> to set up a heirarchy of subtrees in which I could work, build, and 
> test a particular small set of packages as part of a larger system, 
> and not only were the built components placed into the .../blib of the 
> top-level, but a make/make test/make install performed at the top of 
> any of the subtrees or the top level would recurse and "do the right thing".
> 
> The main reason this was attractive was to organize the regression 
> tests into small chunks for a kind of a lazy-man's Extreme Programming 
> that is my current style.  I'm working on an application which uses 
> a bunch of modules, some of which I may break out into separate packages; 
> I need to be able to test the development version of the app against the 
> local copies of these modules without installing them and breaking the 
> "installed" copy of the app/libs on the system.  But I also don't need/want 
> to wait for 100 regression tests to run until these five are passing.
> 
> Has anybody else done this, either with MakeMaker or Module::Build?

I'm not entirely sure I understand the question... you want to run programs
off new copies of your modules without installing them to test the apps?

Some simple solutions come to mind:

    Run the programs with the blib module to automatically put blib/lib and
    blib/arch in @INC.  This can be done without editing the programs by
    setting the PERL5OPT environment variable to -Mblib

    Set the PERL5LIB env manually to /path/to/your/src/blib/lib and blib/arch.

    Install your modules into a holding directory using
    perl Makefile.PL PREFIX=/holding/dir and set PERL5LIB to the resulting
    lib directory.

The latter seems the best since it most closely emulates a real install in
case 'make install' does anything interesting.


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