SCons: Cleanup GCC warnings configuration

- Outright disable spammy warnings due to past or present GCC bugs:
  * `-Wno-strict-overflow` for GCC 7.
  * `-Wno-type-limits` for GCC before 11 (regressed in 9/10, might work in
    earlier releases but at this stage we don't care).
  * `-Wno-return-type` for GCC 12/13 (regression, still not fixed).
- Enable extra warnings conditionally when broken on earlier GCC:
  * `-Wnoexcept` was removed due to an upstream regression in GCC 9, could
    be re-enabled (but commented out for now as we actually have `-Wnoexcept`
    warnings to fix.
  * `-Wlogical-op` was broken on our variadic templates before GCC 11, now
    seems fine.
This commit is contained in:
Rémi Verschelde
2022-10-10 12:57:35 +02:00
parent 77f4670d00
commit 4e4e16f9a9
3 changed files with 16 additions and 56 deletions

View File

@ -687,6 +687,14 @@ if selected_platform in platform_list:
if methods.using_gcc(env):
common_warnings += ["-Wshadow-local", "-Wno-misleading-indentation"]
if cc_version_major == 7: # Bogus warning fixed in 8+.
common_warnings += ["-Wno-strict-overflow"]
if cc_version_major < 11:
# Regression in GCC 9/10, spams so much in our variadic templates
# that we need to outright disable it.
common_warnings += ["-Wno-type-limits"]
if cc_version_major >= 12: # False positives in our error macros, see GH-58747.
common_warnings += ["-Wno-return-type"]
elif methods.using_clang(env) or methods.using_emcc(env):
# We often implement `operator<` for structs of pointers as a requirement
# for putting them in `Set` or `Map`. We don't mind about unreliable ordering.
@ -702,13 +710,16 @@ if selected_platform in platform_list:
"-Wduplicated-branches",
"-Wduplicated-cond",
"-Wstringop-overflow=4",
"-Wlogical-op",
]
)
# -Wnoexcept was removed temporarily due to GH-36325.
env.Append(CXXFLAGS=["-Wplacement-new=1"])
# Need to fix a warning with AudioServer lambdas before enabling.
# if cc_version_major != 9: # GCC 9 had a regression (GH-36325).
# env.Append(CXXFLAGS=["-Wnoexcept"])
if cc_version_major >= 9:
env.Append(CCFLAGS=["-Wattribute-alias=2"])
if cc_version_major >= 11: # Broke on MethodBind templates before GCC 11.
env.Append(CCFLAGS=["-Wlogical-op"])
elif methods.using_clang(env) or methods.using_emcc(env):
env.Append(CCFLAGS=["-Wimplicit-fallthrough"])
elif env["warnings"] == "all":
@ -720,13 +731,10 @@ if selected_platform in platform_list:
if env["werror"]:
env.Append(CCFLAGS=["-Werror"])
# FIXME: Temporary workaround after the Vulkan merge, remove once warnings are fixed.
if methods.using_gcc(env):
env.Append(CXXFLAGS=["-Wno-error=cpp"])
if cc_version_major == 7: # Bogus warning fixed in 8+.
env.Append(CCFLAGS=["-Wno-error=strict-overflow"])
if cc_version_major >= 12: # False positives in our error macros, see GH-58747.
env.Append(CCFLAGS=["-Wno-error=return-type"])
elif methods.using_clang(env) or methods.using_emcc(env):
env.Append(CXXFLAGS=["-Wno-error=#warnings"])