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reduce the default optimization level from -O3 to -O2

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-O3 is sometimes declared "unsafe"
(cf. https://wiki.gentoo.org/wiki/GCC_optimization ) and it seems like
it bit us in https://github.com/OPM/opm-material/issues/23 if GCC 4.8
was used. so let's play safe and use -O2 for now...
This commit is contained in:
Andreas Lauser 2015-04-09 15:30:57 +02:00 committed by Atgeirr Flø Rasmussen
parent 28c2c463cb
commit a9d0306fe8
1 changed files with 1 additions and 1 deletions
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2
cmake/Modules/UseOptimization.cmake
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@ -38,7 +38,7 @@ if (CXX_COMPAT_GCC)
# default optimization flags, if not set by user
set_default_option (CXX _opt_dbg "-O0" "(^|\ )-O")
set_default_option (CXX _opt_rel "-O3" "(^|\ )-O")
set_default_option (CXX _opt_rel "-O2" "(^|\ )-O")
# use these options for debug builds - no optimizations
add_options (ALL_LANGUAGES "${_prof_DEBUG}" ${_opt_dbg} "-DDEBUG")