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cflag cleaning up..auditing...trying to find gcc's flag that doesn't play nice in O3/Ofast, as Ofast is fine with clang

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DarthArgus
2016-12-15 21:27:41 +00:00
parent 967b59afcd
commit d0f511e825
1 changed files with 9 additions and 7 deletions
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CMakeLists.txt
+9 -7
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@@ -70,26 +70,28 @@ elseif(UNIX)
find_package(Curses REQUIRED)
# linker flags
set(CMAKE_SHARED_LINKER_FLAGS "--sort-common,--as-needed,-z,relro")
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,-O1,--sort-common,--as-needed,-z,relro -s")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
# don't put anything too crazy in debug...and any common flags go into CMAKE_CXX_FLAGS
set(CMAKE_CXX_FLAGS_DEBUG "-D_DEBUG -DDEBUG_LEVEL=2 -DPRODUCTION=0 -Og -g3")
# funroll loops and everything else potentially crazy for performance here
set(CMAKE_CXX_FLAGS_RELEASE "-DDEBUG_LEVEL=0 -DPRODUCTION=1")
# Ofast doesn't work with gcc builds
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
set(CMAKE_CXX_FLAGS_RELEASE "-Ofast")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Ofast")
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
set(CMAKE_CXX_FLAGS_RELEASE "-O2")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2 -fno-signed-zeros \
-freciprocal-math -ffp-contract=fast")
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel")
set(CMAKE_CXX_FLAGS_RELEASE "-Ofast")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
endif()
# funroll loops and everything else potentially crazy for performance here
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DDEBUG_LEVEL=0 -DPRODUCTION=1 -funroll-loops -ftree-vectorize")
# our "always on" flags
set(CMAKE_CXX_FLAGS "-m32 -pipe -march=native -mtune=native \
-msse -msse2 -msse3 -mmmx -m3dnow \
-Wformat -Wno-overloaded-virtual -Wno-missing-braces -Wno-format \
-Wno-write-strings -Wno-unknown-pragmas \
-Wno-uninitialized -Wno-reorder")