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Prevent overriding of user-define CFLAGS, including -march flag.
The flag -msse4.1 is required otherwise compile will not be able to inline sse4.1 code.
Note: code should detect CPU features at runtime and use sse4.1 paths only if supported by CPU.
--- a/Source/GmmLib/CMakeLists.txt
+++ b/Source/GmmLib/CMakeLists.txt
@@ -74,6 +74,10 @@
endif()
endif()
+if(NOT DEFINED OVERRIDE_COMPILER_FLAGS)
+ option(OVERRIDE_COMPILER_FLAGS "Override user compiler FLAGS and use lib defaults" ON)
+endif()
+
# begin -- label bldsys file prologue
# WARNING: The "project" statement triggers reading of CMAKE_TOOLCHAIN_FILE
# and so must precede the inclusion below of bs_init.cmake .
--- a/Source/GmmLib/Linux.cmake
+++ b/Source/GmmLib/Linux.cmake
@@ -76,7 +76,10 @@
-Werror=format-security
-Werror=non-virtual-dtor
-Werror=return-type
+ )
+if (OVERRIDE_COMPILER_FLAGS)
+ list (APPEND GMMLIB_COMPILER_FLAGS_COMMON
# General optimization options
-march=${GMMLIB_MARCH}
-mpopcnt
@@ -85,19 +88,31 @@
-msse3
-mssse3
-msse4
- -msse4.1
-msse4.2
+ )
+endif()
+
+list (APPEND GMMLIB_COMPILER_FLAGS_COMMON
+ -msse4.1 # SSE4.1 compiler support is required to build
-mfpmath=sse
-finline-functions
-fno-short-enums
-Wa,--noexecstack
-fno-strict-aliasing
+ )
+
+if (OVERRIDE_COMPILER_FLAGS)
+ list (APPEND GMMLIB_COMPILER_FLAGS_COMMON
# Common defines
-DUSE_MMX
-DUSE_SSE
-DUSE_SSE2
-DUSE_SSE3
-DUSE_SSSE3
+ )
+endif()
+
+list (APPEND GMMLIB_COMPILER_FLAGS_COMMON
# Other common flags
-fstack-protector
-fdata-sections
@@ -105,11 +120,16 @@
-fmessage-length=0
-fvisibility=hidden
-fPIC
+ )
+
+if (OVERRIDE_COMPILER_FLAGS)
+ list (APPEND GMMLIB_COMPILER_FLAGS_COMMON
-g
# -m32 or -m64
-m${GMMLIB_ARCH}
)
endif()
+endif()
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
#Gcc only flags
@@ -167,10 +187,12 @@
#set predefined compiler flags set
add_compile_options("${GMMLIB_COMPILER_FLAGS_COMMON}")
+if (OVERRIDE_COMPILER_FLAGS)
add_compile_options("$<$<CONFIG:Debug>:${GMMLIB_COMPILER_FLAGS_DEBUG}>")
add_compile_options("$<$<CONFIG:Release>:${GMMLIB_COMPILER_FLAGS_RELEASE}>")
add_compile_options("$<$<CONFIG:ReleaseInternal>:${GMMLIB_COMPILER_FLAGS_RELEASEINTERNAL}>")
#cmake 3.3+, add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:${GMMLIB_COMPILER_CXX_FLAGS_COMMON}>")
+endif()
foreach (flag ${GMMLIB_COMPILER_CXX_FLAGS_COMMON})
SET (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}")
endforeach()
@@ -179,6 +201,8 @@
SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
else()
+ if (OVERRIDE_COMPILER_FLAGS)
SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -m${GMMLIB_ARCH}")
SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -m${GMMLIB_ARCH}")
+ endif()
endif()
|
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