FGFS-4.1/simgear
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Enable SSE and SSE2 by default

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This commit is contained in:
Erik Hofman
2016-12-16 10:49:44 +01:00
parent 8c4695b991
commit 203db3d095
2 changed files with 51 additions and 0 deletions
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14
CMakeLists.txt
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@@ -114,6 +114,9 @@ option(ENABLE_SOUND "Set to OFF to disable building SimGear's sound support"
option(USE_AEONWAVE "Set to ON to use AeonWave instead of OpenAL" OFF)
option(ENABLE_PKGUTIL "Set to ON to build the sg_pkgutil application (default)" ON)
option(ENABLE_DNS "Set to ON to use udns library and DNS service resolver" ON)
option(ENABLE_SIMD "Enable SSE/SSE2 support for x86 compilers" ON)
include (DetectArch)
# until the fstream fix is applied and generally available in OSG,
# keep the compatability link option as the default
@@ -332,6 +335,12 @@ if(CMAKE_COMPILER_IS_GNUCXX)
message(WARNING "GCC 4.4 will be required soon, please upgrade")
endif()
if(ENABLE_SIMD)
if (X86 OR X86_64)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse3 -mfpmath=sse")
endif()
endif()
# certain GCC versions don't provide the atomic builds, and hence
# require is to provide them in SGAtomic.cxx
set(CMAKE_REQUIRED_INCLUDES ${CMAKE_INCLUDE_PATH})
@@ -369,6 +378,11 @@ if(WIN32)
if(MSVC)
set(MSVC_FLAGS "-DWIN32 -DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS /MP")
if(ENABLE_SIMD)
if (X86 OR X86_64)
set(MSVC_FLAGS "${MSVC_FLAGS} /arch:SSE /arch:SSE2 /Ox")
endif()
endif()
if (NOT OSG_FSTREAM_EXPORT_FIXED)
message(STATUS "For better linking performance, use OSG with patched fstream header")

37
CMakeModules/DetectArch.cmake Normal file
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@@ -0,0 +1,37 @@
IF(CMAKE_SYSTEM_PROCESSOR MATCHES amd64.*|x86_64.* OR CMAKE_GENERATOR MATCHES "Visual Studio.*Win64")
IF(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
SET(X86 1)
ELSE(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
SET(X86_64 1)
ENDIF(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES i686.*|i386.*|x86.* OR WIN32)
IF(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
SET(X86_64 1)
ELSE(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
SET(X86 1)
ENDIF(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES arm.* AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
SET(ARM 1)
ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES mips)
SET(MIPS 1)
ENDIF()
IF ("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
# using Clang
SET(CLANG 1)
ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "TinyCC")
# using TinyCC
SET(TINYCC 1)
ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
# using GCC
SET(GCC 1)
ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "Intel")
# using Intel C++
SET(INTELCC 1)
ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC")
# using Visual Studio C++
SET(MSVC 1)
ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "MIPSpro")
# using SGI MIPSpro
SET(MIPSPRO 1)
ENDIF()