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Merge pull request #1364 from Project-OSRM/feature/check_libgomp

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check if stxxl compiles with or without libgomp, fixes #1361
This commit is contained in:
Dennis Luxen 2015-01-29 12:54:27 +01:00
commit 4195b0d0e6
2 changed files with 28 additions and 1 deletions
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5
CMakeLists.txt
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@ -176,7 +176,7 @@ endif()
# Activate C++11
if(NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
ADD_DEFINITIONS(-std=c++11)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 ")
endif()
# Configuring other platform dependencies
@ -265,6 +265,9 @@ target_link_libraries(OSRM ${STXXL_LIBRARY})
target_link_libraries(osrm-extract ${STXXL_LIBRARY})
target_link_libraries(osrm-prepare ${STXXL_LIBRARY})
# check if we need to link against libgomp
include(check_stxxl)
if(MINGW)
# STXXL needs OpenMP library
target_link_libraries(osrm-extract gomp)

24
cmake/check_stxxl.cmake Normal file
View File

@ -0,0 +1,24 @@
INCLUDE (CheckCXXSourceCompiles)
unset(STXXL_WORKS CACHE)
set (STXXL_CHECK_SRC "#include <stxxl/vector>\n int main() { stxxl::vector<int> vec; return 0;}")
set (CMAKE_TRY_COMPILE_CONFIGURATION ${CMAKE_BUILD_TYPE})
set (CMAKE_REQUIRED_INCLUDES "${STXXL_INCLUDE_DIR}")
set (CMAKE_REQUIRED_LIBRARIES "${STXXL_LIBRARY}")
CHECK_CXX_SOURCE_COMPILES("${STXXL_CHECK_SRC}" STXXL_WORKS)
if(STXXL_WORKS)
message(STATUS "STXXL can be used without linking against libgomp")
else()
message(STATUS "Linking STXXL failed without libgomp, retrying ..")
find_package(OpenMP)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}${OpenMP_CXX_FLAGS}")
CHECK_CXX_SOURCE_COMPILES("${STXXL_CHECK_SRC}" STXXL_LINKS)
if (STXXL_LINKS)
message(STATUS "STXXL needs to link against OpenMP")
target_link_libraries(osrm-extract gomp)
else()
message(FATAL_ERROR "STXXL failed failed, libgomp missing?")
endif()
endif()