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Use c++XX instead of gnu++XX language standards.

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The GNU extensions to C/C++ are not required to build Verilator. Note
this change does not affect __attribute__, __builtin_* and intrinsics,
which are still available when using GCC or Clang with the standard
language options.
This commit is contained in:
Geza Lore 2021-08-04 11:48:32 +01:00
parent 2c8456ea75
commit bc3e24c8cd
1 changed files with 3 additions and 13 deletions
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16
configure.ac
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@ -346,14 +346,9 @@ AC_SUBST(CFG_CXXFLAGS_PROFILE)
# Flag to select newest language standard supported
# Macros work such that first option that passes is the one we take
# Currently enabled gnu++14/c++14 due to packaged SystemC dependency
# gnu++17 is the newest that Verilator supports
# std++03 is the oldest that Verilator supports
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++20)
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++17)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++14)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++11)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++03)
# Currently enabled c++14 due to packaged SystemC dependency
# c++17 is the newest that Verilator supports
# c++03 is the oldest that Verilator supports
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++20)
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++17)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++14)
@ -367,11 +362,6 @@ _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=c++11)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=c++14)
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=c++17)
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=c++20)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=gnu++03)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=gnu++11)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=gnu++14)
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=gnu++17)
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=gnu++20)
AC_SUBST(CFG_CXXFLAGS_STD_OLDEST)
# Flags for compiling Verilator internals including parser, and Verilated files