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SCons: Ensure that MSVC gets /std:c++17 in CCFLAGS 

We were running this logic too early, so `env.msvc` was not initialized
yet and MSVC used the same branch as GCC/Clang.
This commit is contained in:
Rémi Verschelde 2020-02-22 22:01:48 +01:00
parent 9a55f1564c
commit 17a81cffb2
1 changed files with 10 additions and 9 deletions
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19
SConstruct
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@ -309,9 +309,19 @@ if selected_platform in platform_list:
env['LINKFLAGS'] = ''
env.Append(LINKFLAGS=str(LINKFLAGS).split())
# Platform specific flags
flag_list = platform_flags[selected_platform]
for f in flag_list:
if not (f[0] in ARGUMENTS): # allow command line to override platform flags
env[f[0]] = f[1]
# Must happen after the flags definition, so that they can be used by platform detect
detect.configure(env)
# Set our C and C++ standard requirements.
# C++17 is required as we need guaranteed copy elision as per GH-36436.
# Prepending to make it possible to override.
# This needs to come after `configure`, otherwise we don't have env.msvc.
if not env.msvc:
# Specifying GNU extensions support explicitly, which are supported by
# both GCC and Clang. Both currently default to gnu11 and gnu++14.
@ -322,15 +332,6 @@ if selected_platform in platform_list:
# We apply it to CCFLAGS (both C and C++ code) in case it impacts C features.
env.Prepend(CCFLAGS=['/std:c++17', '/permissive-'])
# Platform specific flags
flag_list = platform_flags[selected_platform]
for f in flag_list:
if not (f[0] in ARGUMENTS): # allow command line to override platform flags
env[f[0]] = f[1]
# Must happen after the flags definition, so that they can be used by platform detect
detect.configure(env)
# Configure compiler warnings
if env.msvc:
# Truncations, narrowing conversions, signed/unsigned comparisons...