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Allow current toolchain for mingw to work and allow GCC 5.2 to also work if gcc-ar is current enough. Add a little more info about lto (nw)

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This commit is contained in:
Cowering 2015-10-05 10:28:46 -05:00
parent 254c14b3f3
commit 7c302af80f
2 changed files with 86 additions and 72 deletions
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50
scripts/genie.lua
View File

@ -850,27 +850,32 @@ if _OPTIONS["OPTIMIZE"] then
end
if _OPTIONS["LTO"]=="1" then
buildoptions {
"-flto=2",
-- these next flags allow MAME to compile in linux GCC 5.2. odr warnings should be fixed as LTO randomly crashes otherwise
"-fno-fat-lto-objects", "-Wodr",
"-flto-compression-level=9", -- lto didn't work with anything less on linux with < 12G RAM
-- windows native mingw GCC 5.2 fails with -flto=x with x > 1. bug unfixed as of this date
"-flto=1",
"-fuse-linker-plugin",
-- these next flags allow MAME to compile in GCC 5.2. odr warnings should be fixed as LTO randomly crashes otherwise
-- some GCC 4.9.x on Windows do not have -Wodr and -flto-odr-type-merging enabled. adjust accordingly...
-- -ffat-lto-objects lets you link non-lto version without rebuilding all .o/.a
"-ffat-lto-objects",
"-flto-odr-type-merging",
"-flto-report", -- if you get an error in lto after [WPA] stage, but before [LTRANS] stage, you need more memory!
"-fmem-report-wpa","-fmem-report","-fpre-ipa-mem-report","-fpost-ipa-mem-report","-flto-report-wpa","-fmem-report","-fuse-linker-plugin",
"-Wodr",
"-flto-compression-level=9", -- lto didn't work with anything <9 on linux with < 12G RAM
-- "-flto-report", -- if you get an error in lto after [WPA] stage, but before [LTRANS] stage, you need more memory!
-- "-fmem-report-wpa","-fmem-report","-fpre-ipa-mem-report","-fpost-ipa-mem-report","-flto-report-wpa","-fmem-report",
}
-- same flags are needed by linker
linkoptions {
"-flto=2",
-- these next flags allow MAME to compile in linux GCC 5.2. odr warnings should be fixed as LTO randomly crashes otherwise
"-fno-fat-lto-objects", "-Wodr",
"-flto-compression-level=9", -- lto didn't work with anything less on linux with < 12G RAM
"-Wl,-no-keep-memory",
"-flto=1",
"-fuse-linker-plugin",
"-ffat-lto-objects",
"-flto-odr-type-merging",
"-flto-report", -- if you get an error in lto after [WPA] stage printout, but before any [LTRANS] section printout, you need more memory!
"-fmem-report-wpa","-fmem-report","-fpre-ipa-mem-report","-fpost-ipa-mem-report","-flto-report-wpa","-fmem-report","-fuse-linker-plugin",
"-Wodr",
"-flto-compression-level=9", -- lto didn't work with anything < 9 on linux with < 12G RAM
-- "-flto-report", -- if you get an error in lto after [WPA] stage, but before [LTRANS] stage, you need more memory!
-- "-fmem-report-wpa","-fmem-report","-fpre-ipa-mem-report","-fpost-ipa-mem-report","-flto-report-wpa","-fmem-report",
}
end
end
@ -1000,11 +1005,11 @@ end
"-Wno-extern-c-compat",
}
end
if (version >= 70000) then
buildoptions {
"-Wno-tautological-undefined-compare",
}
end
if (version >= 70000) then
buildoptions {
"-Wno-tautological-undefined-compare",
}
end
else
if (version == 40201) then
buildoptions {
@ -1041,13 +1046,12 @@ end
-- next two should work, but compiler complains about end conditions that are int when loop variable is unsigned. maybe these can be fixed
-- "-funsafe-loop-optimizations",
-- "-Wunsafe-loop-optimizations",
-- this six flag combo lets MAME compile with LTO=1 on linux with no errors (whew!--Cowering) someone should probably pretty this up as you can't really debug with them enabled
"-fdevirtualize-at-ltrans","-fgcse-sm","-fgcse-las",
"-fipa-pta","-fipa-icf","-fvariable-expansion-in-unroller",
-- this six flag combo lets MAME compile with LTO=1 on linux with no errors and ~2% speed boost, but compile time is much longer
-- "-fdevirtualize-at-ltrans","-fgcse-sm","-fgcse-las",
-- "-fipa-pta","-fipa-icf","-fvariable-expansion-in-unroller",
}
end
end
end
--ifeq ($(findstring arm,$(UNAME)),arm)

22
scripts/toolchain.lua
View File

@ -195,9 +195,14 @@ function toolchain(_buildDir, _subDir)
end
premake.gcc.cc = "$(MINGW32)/bin/i686-w64-mingw32-gcc"
premake.gcc.cxx = "$(MINGW32)/bin/i686-w64-mingw32-g++"
premake.gcc.ar = "$(MINGW32)/bin/ar"
-- lto docs say to use gcc-ar so that plugin is completely setup, but this doesn't work in windows with the current build tools' copy of gcc-ar.exe
-- premake.gcc.ar = "$(MINGW32)/bin/gcc-ar"
-- work around GCC 4.9.2 not having proper linker for LTO=1 usage
local version_4_ar = str_to_version(_OPTIONS["gcc_version"])
if (version_4_ar < 50000) then
premake.gcc.ar = "$(MINGW32)/bin/i686-w64-mingw32-ar"
end
if (version_4_ar >= 50000) then
premake.gcc.ar = "$(MINGW32)/bin/i686-w64-mingw32-gcc-ar"
end
location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-mingw32-gcc")
end
@ -207,9 +212,14 @@ function toolchain(_buildDir, _subDir)
end
premake.gcc.cc = "$(MINGW64)/bin/x86_64-w64-mingw32-gcc"
premake.gcc.cxx = "$(MINGW64)/bin/x86_64-w64-mingw32-g++"
premake.gcc.ar = "$(MINGW64)/bin/ar"
-- lto docs say to use gcc-ar so that plugin is completely setup, but this doesn't work in windows with the current build tools' copy of gcc-ar.exe
-- premake.gcc.ar = "$(MINGW64)/bin/gcc-ar"
-- work around GCC 4.9.2 not having proper linker for LTO=1 usage
local version_4_ar = str_to_version(_OPTIONS["gcc_version"])
if (version_4_ar < 50000) then
premake.gcc.ar = "$(MINGW64)/bin/x86_64-w64-mingw32-ar"
end
if (version_4_ar >= 50000) then
premake.gcc.ar = "$(MINGW64)/bin/x86_64-w64-mingw32-gcc-ar"
end
location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-mingw64-gcc")
end