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SCons: Fix `CCFLAGS`, `LINKFLAGS`, etc. command line overrides 

Also adds `CPPDEFINES` which allows passing new pre-processor defines,
letting SCons handle passing `-D` or `/D` based on the compiler.
This commit is contained in:
Rémi Verschelde 2024-01-08 18:09:04 +01:00
parent 25a52c624e
commit 0d1894736e
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GPG Key ID: C3336907360768E1
1 changed files with 15 additions and 22 deletions
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37
SConstruct
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@ -259,13 +259,16 @@ opts.Add(BoolVariable("builtin_zlib", "Use the built-in zlib library", True))
opts.Add(BoolVariable("builtin_zstd", "Use the built-in Zstd library", True))
# Compilation environment setup
opts.Add("CXX", "C++ compiler")
opts.Add("CC", "C compiler")
opts.Add("LINK", "Linker")
opts.Add("CCFLAGS", "Custom flags for both the C and C++ compilers")
opts.Add("CFLAGS", "Custom flags for the C compiler")
opts.Add("CXXFLAGS", "Custom flags for the C++ compiler")
opts.Add("LINKFLAGS", "Custom flags for the linker")
# CXX, CC, and LINK directly set the equivalent `env` values (which may still
# be overridden for a specific platform), the lowercase ones are appended.
opts.Add("CXX", "C++ compiler binary")
opts.Add("CC", "C compiler binary")
opts.Add("LINK", "Linker binary")
opts.Add("cppdefines", "Custom defines for the pre-processor")
opts.Add("ccflags", "Custom flags for both the C and C++ compilers")
opts.Add("cxxflags", "Custom flags for the C++ compiler")
opts.Add("cflags", "Custom flags for the C compiler")
opts.Add("linkflags", "Custom flags for the linker")
# Update the environment to have all above options defined
# in following code (especially platform and custom_modules).
@ -507,21 +510,11 @@ if selected_platform in platform_list:
env.extra_suffix += "." + env["extra_suffix"]
# Environment flags
CCFLAGS = env.get("CCFLAGS", "")
env["CCFLAGS"] = ""
env.Append(CCFLAGS=str(CCFLAGS).split())
CFLAGS = env.get("CFLAGS", "")
env["CFLAGS"] = ""
env.Append(CFLAGS=str(CFLAGS).split())
CXXFLAGS = env.get("CXXFLAGS", "")
env["CXXFLAGS"] = ""
env.Append(CXXFLAGS=str(CXXFLAGS).split())
LINKFLAGS = env.get("LINKFLAGS", "")
env["LINKFLAGS"] = ""
env.Append(LINKFLAGS=str(LINKFLAGS).split())
env.Append(CPPDEFINES=env.get("cppdefines", "").split())
env.Append(CCFLAGS=env.get("ccflags", "").split())
env.Append(CXXFLAGS=env.get("cxxflags", "").split())
env.Append(CFLAGS=env.get("cflags", "").split())
env.Append(LINKFLAGS=env.get("linkflags", "").split())
# Feature build profile
disabled_classes = []