diff options
Diffstat (limited to 'platform/windows/detect.py')
| -rw-r--r-- | platform/windows/detect.py | 93 |
1 files changed, 84 insertions, 9 deletions
diff --git a/platform/windows/detect.py b/platform/windows/detect.py index 82a98655c0..92ac921cee 100644 --- a/platform/windows/detect.py +++ b/platform/windows/detect.py @@ -381,6 +381,15 @@ def configure_msvc(env: "SConsEnvironment", vcvars_msvc_config): ## Compile/link flags + if env["use_llvm"]: + env["CC"] = "clang-cl" + env["CXX"] = "clang-cl" + env["LINK"] = "lld-link" + env["AR"] = "llvm-lib" + + env.AppendUnique(CPPDEFINES=["R128_STDC_ONLY"]) + env.extra_suffix = ".llvm" + env.extra_suffix + env["MAXLINELENGTH"] = 8192 # Windows Vista and beyond, so always applicable. if env["silence_msvc"] and not env.GetOption("clean"): @@ -465,7 +474,6 @@ def configure_msvc(env: "SConsEnvironment", vcvars_msvc_config): env.AppendUnique(CCFLAGS=["/Gd", "/GR", "/nologo"]) env.AppendUnique(CCFLAGS=["/utf-8"]) # Force to use Unicode encoding. - env.AppendUnique(CXXFLAGS=["/TP"]) # assume all sources are C++ # Once it was thought that only debug builds would be too large, # but this has recently stopped being true. See the mingw function # for notes on why this shouldn't be enabled for gcc @@ -590,6 +598,9 @@ def configure_msvc(env: "SConsEnvironment", vcvars_msvc_config): if env["target"] in ["editor", "template_debug"]: LIBS += ["psapi", "dbghelp"] + if env["use_llvm"]: + LIBS += [f"clang_rt.builtins-{env['arch']}"] + env.Append(LINKFLAGS=[p + env["LIBSUFFIX"] for p in LIBS]) if vcvars_msvc_config: @@ -605,14 +616,22 @@ def configure_msvc(env: "SConsEnvironment", vcvars_msvc_config): if env["lto"] != "none": if env["lto"] == "thin": - print_error("ThinLTO is only compatible with LLVM, use `use_llvm=yes` or `lto=full`.") - sys.exit(255) - env.AppendUnique(CCFLAGS=["/GL"]) - env.AppendUnique(ARFLAGS=["/LTCG"]) - if env["progress"]: - env.AppendUnique(LINKFLAGS=["/LTCG:STATUS"]) + if not env["use_llvm"]: + print("ThinLTO is only compatible with LLVM, use `use_llvm=yes` or `lto=full`.") + sys.exit(255) + + env.Append(CCFLAGS=["-flto=thin"]) + env.Append(LINKFLAGS=["-flto=thin"]) + elif env["use_llvm"]: + env.Append(CCFLAGS=["-flto"]) + env.Append(LINKFLAGS=["-flto"]) else: - env.AppendUnique(LINKFLAGS=["/LTCG"]) + env.AppendUnique(CCFLAGS=["/GL"]) + env.AppendUnique(ARFLAGS=["/LTCG"]) + if env["progress"]: + env.AppendUnique(LINKFLAGS=["/LTCG:STATUS"]) + else: + env.AppendUnique(LINKFLAGS=["/LTCG"]) if vcvars_msvc_config: env.Prepend(CPPPATH=[p for p in str(os.getenv("INCLUDE")).split(";")]) @@ -630,6 +649,61 @@ def configure_msvc(env: "SConsEnvironment", vcvars_msvc_config): env.AppendUnique(LINKFLAGS=["/STACK:" + str(STACK_SIZE)]) +def get_ar_version(env): + ret = { + "major": -1, + "minor": -1, + "patch": -1, + "is_llvm": False, + } + try: + output = ( + subprocess.check_output([env.subst(env["AR"]), "--version"], shell=(os.name == "nt")) + .strip() + .decode("utf-8") + ) + except (subprocess.CalledProcessError, OSError): + print_warning("Couldn't check version of `ar`.") + return ret + + match = re.search(r"GNU ar \(GNU Binutils\) (\d+)\.(\d+)(:?\.(\d+))?", output) + if match: + ret["major"] = int(match[1]) + ret["minor"] = int(match[2]) + if match[3]: + ret["patch"] = int(match[3]) + else: + ret["patch"] = 0 + return ret + + match = re.search(r"LLVM version (\d+)\.(\d+)\.(\d+)", output) + if match: + ret["major"] = int(match[1]) + ret["minor"] = int(match[2]) + ret["patch"] = int(match[3]) + ret["is_llvm"] = True + return ret + + print_warning("Couldn't parse version of `ar`.") + return ret + + +def get_is_ar_thin_supported(env): + """Check whether `ar --thin` is supported. It is only supported since Binutils 2.38 or LLVM 14.""" + ar_version = get_ar_version(env) + if ar_version["major"] == -1: + return False + + if ar_version["is_llvm"]: + return ar_version["major"] >= 14 + + if ar_version["major"] == 2: + return ar_version["minor"] >= 38 + + print_warning("Unknown Binutils `ar` version.") + return False + + def configure_mingw(env: "SConsEnvironment"): # Workaround for MinGW. See: # https://www.scons.org/wiki/LongCmdLinesOnWin32 @@ -762,7 +836,8 @@ def configure_mingw(env: "SConsEnvironment"): if env["use_llvm"] and os.name == "nt" and methods._colorize: env.Append(CCFLAGS=["$(-fansi-escape-codes$)", "$(-fcolor-diagnostics$)"]) - env.Append(ARFLAGS=["--thin"]) + if get_is_ar_thin_supported(env): + env.Append(ARFLAGS=["--thin"]) env.Append(CPPDEFINES=["WINDOWS_ENABLED", "WASAPI_ENABLED", "WINMIDI_ENABLED"]) env.Append( |