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fix: Windows C++ latest (#2508)

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Henry Schreiner 2020-09-18 14:57:47 -04:00 committed by GitHub
parent 87828c7ec1
commit 4a288ab928
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1 changed files with 18 additions and 7 deletions
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25
pybind11/setup_helpers.py
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@ -156,7 +156,8 @@ class Pybind11Extension(_Extension):
if self._cxx_level:
warnings.warn("You cannot safely change the cxx_level after setting it!")
# MSVC 2015 Update 3 and later only have 14 (and later 17) modes
# MSVC 2015 Update 3 and later only have 14 (and later 17) modes, so
# force a valid flag here.
if WIN and level == 11:
level = 14
@ -168,15 +169,22 @@ class Pybind11Extension(_Extension):
self.extra_compile_args.append(STD_TMPL.format(level))
if MACOS and "MACOSX_DEPLOYMENT_TARGET" not in os.environ:
# C++17 requires a higher min version of macOS
# C++17 requires a higher min version of macOS. An earlier version
# can be set manually via environment variable if you are careful
# in your feature usage, but 10.14 is the safest setting for
# general use.
macosx_min = "-mmacosx-version-min=" + ("10.9" if level < 17 else "10.14")
self.extra_compile_args.append(macosx_min)
self.extra_link_args.append(macosx_min)
if PY2:
if level >= 17:
self.extra_compile_args.append("/wd5033" if WIN else "-Wno-register")
elif not WIN and level >= 14:
if WIN:
# Will be ignored on MSVC 2015, where C++17 is not supported so
# this flag is not valid.
self.extra_compile_args.append("/wd5033")
elif level >= 17:
self.extra_compile_args.append("-Wno-register")
elif level >= 14:
self.extra_compile_args.append("-Wno-deprecated-register")
@ -227,9 +235,12 @@ cpp_flag_cache = None
def auto_cpp_level(compiler):
"""
Return the max supported C++ std level (17, 14, or 11).
Return the max supported C++ std level (17, 14, or 11). Returns latest on Windows.
"""
if WIN:
return "latest"
global cpp_flag_cache
# If this has been previously calculated with the same args, return that
@ -237,7 +248,7 @@ def auto_cpp_level(compiler):
if cpp_flag_cache:
return cpp_flag_cache
levels = [17, 14] + ([] if WIN else [11])
levels = [17, 14, 11]
for level in levels:
if has_flag(compiler, STD_TMPL.format(level)):