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- import common_compiler_flags
- from SCons.Variables import *
- from SCons.Tool import clang, clangxx
- def options(opts):
- opts.Add(BoolVariable("use_llvm", "Use the LLVM compiler - only effective when targeting Linux", False))
- def exists(env):
- return True
- def generate(env):
- if env["use_llvm"]:
- clang.generate(env)
- clangxx.generate(env)
- env.Append(CCFLAGS=["-fPIC", "-Wwrite-strings"])
- env.Append(LINKFLAGS=["-Wl,-R,'$$ORIGIN'"])
- if env["arch"] == "x86_64":
- # -m64 and -m32 are x86-specific already, but it doesn't hurt to
- # be clear and also specify -march=x86-64. Similar with 32-bit.
- env.Append(CCFLAGS=["-m64", "-march=x86-64"])
- env.Append(LINKFLAGS=["-m64", "-march=x86-64"])
- elif env["arch"] == "x86_32":
- env.Append(CCFLAGS=["-m32", "-march=i686"])
- env.Append(LINKFLAGS=["-m32", "-march=i686"])
- elif env["arch"] == "arm64":
- env.Append(CCFLAGS=["-march=armv8-a"])
- env.Append(LINKFLAGS=["-march=armv8-a"])
- elif env["arch"] == "rv64":
- env.Append(CCFLAGS=["-march=rv64gc"])
- env.Append(LINKFLAGS=["-march=rv64gc"])
- env.Append(CPPDEFINES=["LINUX_ENABLED", "UNIX_ENABLED"])
- common_compiler_flags.generate(env)
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