[PATCH v2] Shorter object file names under subdir-objects

[Thomas Martitz]

Hello,

here's the updated patch. Changes since v1:

- The test that checks for exact object file names was replaced by 
another one that tests if object files clash due to truncation of the name
- When there were two programs or libraries with the same base name (but 
in different dirs), then the wrong object was linked into one of the 
programs/libs.

Note: There is still one extreme edge case which is not handled yet. You 
can apparently name a program libfoo_la. If there is also library 
libfoo.la generated in another dir, then the objects will clash again. 
My fix above only checks for clashes within programs (and within 
libraries). This is due to the code structure (libraries are written out 
before programs parsed at all). I wanted to get opinions on how to 
tackle this before going a wrong route. Maybe change the code so that 
all programs and libs are parsed first, checked for clashes second and 
then written out?

Best regards

0001-Shorter-object-file-names-under-subdir-objects.patch
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