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SCons: Detect msvc compiler version 

• C standard now passed on msvc if the version is supported
This commit is contained in:
Thaddeus Crews 2024-04-23 11:00:46 -05:00
parent 76a135926a
commit 1043c00137
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GPG Key ID: 62181B86FE9E5D84
2 changed files with 60 additions and 33 deletions
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64
SConstruct
View File

@ -640,25 +640,18 @@ if env.dev_build:
print("NOTE: Developer build, with debug optimization level and debug symbols (unless overridden).")
# Enforce our minimal compiler version requirements
cc_version = methods.get_compiler_version(env) or {
"major": None,
"minor": None,
"patch": None,
"metadata1": None,
"metadata2": None,
"date": None,
}
cc_version_major = int(cc_version["major"] or -1)
cc_version_minor = int(cc_version["minor"] or -1)
cc_version_metadata1 = cc_version["metadata1"] or ""
cc_version = methods.get_compiler_version(env)
cc_version_major = cc_version["major"]
cc_version_minor = cc_version["minor"]
cc_version_metadata1 = cc_version["metadata1"]
if methods.using_gcc(env):
if cc_version_major == -1:
if cc_version_major == -1:
print_warning(
"Couldn't detect compiler version, skipping version checks. "
"Build may fail if the compiler doesn't support C++17 fully."
)
elif cc_version_major < 9:
elif methods.using_gcc(env):
if cc_version_major < 9:
print_error(
"Detected GCC version older than 9, which does not fully support "
"C++17, or has bugs when compiling Godot. Supported versions are 9 "
@ -678,17 +671,12 @@ if methods.using_gcc(env):
print_warning("GCC < 8 doesn't support -ffile-prefix-map, disabling `debug_paths_relative` option.")
env["debug_paths_relative"] = False
elif methods.using_clang(env):
if cc_version_major == -1:
print_warning(
"Couldn't detect compiler version, skipping version checks. "
"Build may fail if the compiler doesn't support C++17 fully."
)
# Apple LLVM versions differ from upstream LLVM version \o/, compare
# in https://en.wikipedia.org/wiki/Xcode#Toolchain_versions
elif env["platform"] == "macos" or env["platform"] == "ios":
if env["platform"] == "macos" or env["platform"] == "ios":
vanilla = methods.is_vanilla_clang(env)
if vanilla and cc_version_major < 6:
print_warning(
print_error(
"Detected Clang version older than 6, which does not fully support "
"C++17. Supported versions are Clang 6 and later."
)
@ -713,6 +701,28 @@ elif methods.using_clang(env):
if env["debug_paths_relative"] and cc_version_major < 10:
print_warning("Clang < 10 doesn't support -ffile-prefix-map, disabling `debug_paths_relative` option.")
env["debug_paths_relative"] = False
elif env.msvc:
# Ensure latest minor builds of Visual Studio 2017/2019.
# https://github.com/godotengine/godot/pull/94995#issuecomment-2336464574
if cc_version_major == 16 and cc_version_minor < 11:
print_error(
"Detected Visual Studio 2019 version older than 16.11, which has bugs "
"when compiling Godot. Use a newer VS2019 version, or VS2022."
)
Exit(255)
if cc_version_major == 15 and cc_version_minor < 9:
print_error(
"Detected Visual Studio 2017 version older than 15.9, which has bugs "
"when compiling Godot. Use a newer VS2017 version, or VS2019/VS2022."
)
Exit(255)
if cc_version_major < 15:
print_error(
"Detected Visual Studio 2015 or earlier, which is unsupported in Godot. "
"Supported versions are Visual Studio 2017 and later."
)
Exit(255)
# Set optimize and debug_symbols flags.
# "custom" means do nothing and let users set their own optimization flags.
@ -790,13 +800,17 @@ if env["lto"] != "none":
# 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.
# both GCC and Clang. Both currently default to gnu11 and gnu++17.
env.Prepend(CFLAGS=["-std=gnu11"])
env.Prepend(CXXFLAGS=["-std=gnu++17"])
else:
# MSVC doesn't have clear C standard support, /std only covers C++.
# We apply it to CCFLAGS (both C and C++ code) in case it impacts C features.
env.Prepend(CCFLAGS=["/std:c++17"])
# MSVC started offering C standard support with Visual Studio 2019 16.8, which covers all
# of our supported VS2019 & VS2022 versions; VS2017 will only pass the C++ standard.
env.Prepend(CXXFLAGS=["/std:c++17"])
if cc_version_major < 16:
print_warning("Visual Studio 2017 cannot specify a C-Standard.")
else:
env.Prepend(CFLAGS=["/std:c11"])
# MSVC is non-conforming with the C++ standard by default, so we enable more conformance.
# Note that this is still not complete conformance, as certain Windows-related headers
# don't compile under complete conformance.

21
methods.py
View File

@ -795,9 +795,9 @@ def get_compiler_version(env):
"major": -1,
"minor": -1,
"patch": -1,
"metadata1": None,
"metadata2": None,
"date": None,
"metadata1": "",
"metadata2": "",
"date": "",
"apple_major": -1,
"apple_minor": -1,
"apple_patch1": -1,
@ -806,7 +806,20 @@ def get_compiler_version(env):
}
if env.msvc and not using_clang(env):
# TODO: Implement for MSVC
try:
args = [env["VSWHERE"], "-latest", "-products", "*", "-requires", "Microsoft.Component.MSBuild"]
version = subprocess.check_output(args, encoding="utf-8").strip()
for line in version.splitlines():
split = line.split(":", 1)
if split[0] == "catalog_productDisplayVersion":
sem_ver = split[1].split(".")
ret["major"] = int(sem_ver[0])
ret["minor"] = int(sem_ver[1])
ret["patch"] = int(sem_ver[2])
if split[0] == "catalog_buildVersion":
ret["metadata1"] = split[1]
except (subprocess.CalledProcessError, OSError):
print_warning("Couldn't find vswhere to determine compiler version.")
return ret
# Not using -dumpversion as some GCC distros only return major, and