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Merge pull request #94109 from akien-mga/scons-linker-optflags

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SCons: Pass optimization flags to the linker too, needed by Emscripten
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Rémi Verschelde 2024-07-11 00:27:17 +02:00
commit 543f694e2c
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1 changed files with 11 additions and 4 deletions
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@ -700,12 +700,11 @@ if env.msvc:
else:
env.Append(LINKFLAGS=["/DEBUG:NONE"])
if env["optimize"] == "speed":
if env["optimize"].startswith("speed"):
env.Append(CCFLAGS=["/O2"])
env.Append(LINKFLAGS=["/OPT:REF"])
elif env["optimize"] == "speed_trace":
env.Append(CCFLAGS=["/O2"])
env.Append(LINKFLAGS=["/OPT:REF", "/OPT:NOICF"])
if env["optimize"] == "speed_trace":
env.Append(LINKFLAGS=["/OPT:NOICF"])
elif env["optimize"] == "size":
env.Append(CCFLAGS=["/O1"])
env.Append(LINKFLAGS=["/OPT:REF"])
@ -737,17 +736,25 @@ else:
else:
env.Append(LINKFLAGS=["-s"])
# Linker needs optimization flags too, at least for Emscripten.
# For other toolchains, this _may_ be useful for LTO too to disambiguate.
if env["optimize"] == "speed":
env.Append(CCFLAGS=["-O3"])
env.Append(LINKFLAGS=["-O3"])
# `-O2` is friendlier to debuggers than `-O3`, leading to better crash backtraces.
elif env["optimize"] == "speed_trace":
env.Append(CCFLAGS=["-O2"])
env.Append(LINKFLAGS=["-O2"])
elif env["optimize"] == "size":
env.Append(CCFLAGS=["-Os"])
env.Append(LINKFLAGS=["-Os"])
elif env["optimize"] == "debug":
env.Append(CCFLAGS=["-Og"])
env.Append(LINKFLAGS=["-Og"])
elif env["optimize"] == "none":
env.Append(CCFLAGS=["-O0"])
env.Append(LINKFLAGS=["-O0"])
# Needs to happen after configure to handle "auto".
if env["lto"] != "none":