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Bug 301727 - dev-util/ccache breaks -MD option
Summary: dev-util/ccache breaks -MD option
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Development (show other bugs)
Hardware: x86 Linux
: High normal (vote)
Assignee: Robin Johnson
Depends on: 313101
  Show dependency tree
Reported: 2010-01-21 15:57 UTC by Mariusz Kozlowski
Modified: 2010-11-19 09:46 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description Mariusz Kozlowski 2010-01-21 15:57:34 UTC
That breaks dependencies when the makefile runs with its current directory
different from its object directory - for instance glibc does this.

Reproducible: Always

Steps to Reproduce:
1. mkdir testxyz
2. touch foo.c
3. gcc foo.c -c -o `pwd`/foo.o -MD
   foo.d will say:
   /this/directory/foo.o: foo.c
4. ccache gcc foo.c -c -o `pwd`/foo.o -MD
   foo.d will say:
   foo.o: foo.c

Actual Results:  
If you use -MD

'*.d' files are in source folder

Expected Results:  
If you use -MD

'*.d' files should be in target (binaries) folder

This is exactly the same problem as reported here in debian bus:

Also my bug report is almost all copy and paste from debian report. It is the same issue and I verified the wrong behaviour.
Comment 1 Mariusz Kozlowski 2010-01-21 15:59:44 UTC
Hmm ... I believe this is the patch for fixing this issue:
Comment 2 SpanKY gentoo-dev 2010-02-02 23:56:51 UTC
ive pushed the issue upstream (among all the other outstanding Gentoo patches)
Comment 3 SpanKY gentoo-dev 2010-04-11 21:31:39 UTC
fix should be included with ccache-3.0
Comment 4 SpanKY gentoo-dev 2010-11-19 09:46:12 UTC
ccache-3.1.1 in the tree which should fix this