[asterisk-dev] [Code Review] 4151: Fix compiler error when using ./configure --enable-dev-mode --enable-coverage

[Corey Farrell]

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Review request for Asterisk Developers.


Bugs: ASTERISK-24502
    https://issues.asterisk.org/jira/browse/ASTERISK-24502


Repository: Asterisk


Description
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When coverage and dev-mode are enabled with DONT_OPTIMIZE, it causes build failure.  The double compilation does a 'shadow' build of each file with output to /dev/null.  Unfortunately when coverage is enabled, GCC tries writing to /dev/null.gcno (at least some versions do).  This prevents the build from proceeding.

The simple fix is to simply prevent COMPILE_DOUBLE when coverage is enabled, that is what I'm proposing here.  The other option would be to use a real output location instead of /dev/null, delete the file immediately after building.  I'm not sure that is needed, so I've proposed the simpler fix.


Diffs
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  /branches/11/Makefile.rules 427380 

Diff: https://reviewboard.asterisk.org/r/4151/diff/


Testing
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Build with these options now works in Linux Mint 17 (gcc 4.8.2-19ubuntu1).


Thanks,

Corey Farrell

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