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Made the cmake option for using SSE4 work with visual studio.

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This commit is contained in:
Davis King 2014-01-02 12:28:45 -05:00
parent d4cd8779ee
commit 5f7b18490c
1 changed files with 7 additions and 2 deletions
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9
dlib/cmake
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@ -12,9 +12,9 @@ if (NOT TARGET dlib)
add_definitions("-Wreturn-type")
endif()
# Setup some options to allow a user to enable SSE and AVX instruction use.
option(USE_SSE4_INSTRUCTIONS "Compile your program with SSE4 instructions" OFF)
option(USE_AVX_INSTRUCTIONS "Compile your program with AVX instructions" OFF)
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
option(USE_SSE2_INSTRUCTIONS "Compile your program with SSE2 instructions" OFF)
if(USE_AVX_INSTRUCTIONS)
@ -30,7 +30,12 @@ if (NOT TARGET dlib)
if(USE_AVX_INSTRUCTIONS)
add_definitions(/arch:AVX)
elseif (USE_SSE4_INSTRUCTIONS)
add_definitions(/arch:SSE2) # There isn't an /arch:SSE4 flag in visual studio.
# There isn't an /arch:SSE4 flag in visual studio. But we can tell
# dlib to use those instructions anyway with the DLIB_HAVE_SSE3 and
# DLIB_HAVE_SSE41 #defines.
add_definitions(/arch:SSE2)
add_definitions(-DDLIB_HAVE_SSE3)
add_definitions(-DDLIB_HAVE_SSE41)
elseif(USE_SSE2_INSTRUCTIONS)
add_definitions(/arch:SSE2)
endif()