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configure: use c++11 and fallback to c++0x for c++ files 

Needed for the C+11 atomics. Also change add_cxxflags to check_cxxflags.

Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2017-03-25 17:36:39 +01:00
parent 3b80f73b18
commit 7cfa98fd94
1 changed files with 1 additions and 1 deletions
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2
configure vendored
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@ -4649,7 +4649,7 @@ fi
add_cppflags -D_ISOC99_SOURCE
add_cxxflags -D__STDC_CONSTANT_MACROS
add_cxxflags -std=c++98
check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
# some compilers silently accept -std=c11, so we also need to check that the
# version macro is defined properly