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Fixes for SSE detection and propagation #24

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Merged
brian-armstrong merged 1 commit into from
Oct 10, 2018
Merged

Fixes for SSE detection and propagation #24

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21 changes: 17 additions & 4 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ project(Correct C)
include(CheckLibraryExists)
include(CheckIncludeFiles)
include(CheckCSourceCompiles)
include(CMakePushCheckState)

if(MSVC)
set(LIBM "")
Expand All @@ -27,15 +28,24 @@ endif(MSVC)

find_library(FEC fec)
CHECK_LIBRARY_EXISTS(FEC dotprod "" HAVE_LIBFEC)
check_c_source_compiles("

if(NOT CMAKE_CROSSCOMPILING)
# Check if host machine can compile with SSE 4.1 intrinsic
cmake_push_check_state(RESET)
set(CMAKE_REQUIRED_DEFINITIONS -march=native)
check_c_source_compiles("
#include <x86intrin.h>
int main() {
__m128i vec;
__m128i a;
__m128i b;
__m128i c = _mm_min_epu16(a, b);
return 0;
}" HAVE_SSE)
cmake_pop_check_state()
endif()

if(HAVE_SSE)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse4.2")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse4.1")
endif()

set(CMAKE_CXX_VISIBILITY_PRESET hidden)
Expand All @@ -54,13 +64,16 @@ if(HAVE_SSE)
set(correct_obj_files $<TARGET_OBJECTS:correct-reed-solomon> $<TARGET_OBJECTS:correct-convolutional> $<TARGET_OBJECTS:correct-convolutional-sse>)
set(INSTALL_HEADERS ${INSTALL_HEADERS} ${PROJECT_BINARY_DIR}/include/correct-sse.h)
add_custom_target(correct-sse-h ALL COMMAND ${CMAKE_COMMAND} -E copy ${PROJECT_SOURCE_DIR}/include/correct-sse.h ${PROJECT_BINARY_DIR}/include/correct-sse.h)
add_definitions(-DHAVE_SSE=1)
else()
set(correct_obj_files $<TARGET_OBJECTS:correct-reed-solomon> $<TARGET_OBJECTS:correct-convolutional>)
endif()
add_library(correct SHARED ${correct_obj_files})
add_library(correct_static ${correct_obj_files})
set_target_properties(correct_static PROPERTIES OUTPUT_NAME "correct")
if(HAVE_SSE)
target_compile_definitions(correct PUBLIC HAVE_SSE=1)
target_compile_definitions(correct_static PUBLIC HAVE_SSE=1)
endif()

add_subdirectory(util)
add_subdirectory(tests)
Expand Down