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determine full compiler version for gcc-7

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Fixes #5778.

Spack uses 'gcc -dumpversion' to determine the full version of gcc.
'gcc -dumpversion' no longer gives the full version on gcc 7.2.0.
'gcc -dumpfullversion' is required instead. This PR detects when
'gcc -dumpversion' gives a truncated version of '7' and in that
case retrieves the full version with 'gcc -dumpfullversion'
This commit is contained in:
Ben Boeckel 2017-11-02 21:44:10 -04:00 committed by scheibelp
parent a7925bb927
commit 76305038ef
1 changed files with 4 additions and 1 deletions
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5
lib/spack/spack/compilers/gcc.py
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@ -97,7 +97,10 @@ def default_version(cls, cc):
if spack.compilers.clang.Clang.default_version(cc) != 'unknown':
return 'unknown'
return super(Gcc, cls).default_version(cc)
version = super(Gcc, cls).default_version(cc)
if version in ['7']:
version = get_compiler_version(cc, '-dumpfullversion')
return version
@classmethod
def fc_version(cls, fc):