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CMakeLists: fixed detection of OpenMP #5

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22 changes: 15 additions & 7 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
# minimum version is 3.0 to be able to handle Eigen library
cmake_minimum_required (VERSION 2.8)
cmake_minimum_required (VERSION 3.12)
project (FasterCap)

# main project specific settings
Expand Down Expand Up @@ -31,12 +31,17 @@ endif()
# so that code knows whether it needs to #include config.h
#add_definitions(-DHAVE_CONFIG_H)
#
# List of options to pass to the compiler (note this is a CMake list. Do not enclose in ")
set(FASTFIELDSOLVERS_COMPILE_OPTIONS ${FASTFIELDSOLVERS_COMPILE_OPTIONS} -Wextra -Wall -fopenmp)
# -fopenmp: use OpenMP pragmas
# -lm: link the math library
# -lstdc++: link the standard c++ library (needed for headless)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fopenmp -lm -lstdc++")

find_package(OpenMP)
if(OpenMP_CXX_FOUND)
set (EXTRA_LIBS ${EXTRA_LIBS} OpenMP::OpenMP_CXX)
else()
message(FATAL_ERROR "Unable to find OpenMP. Try exporting the OpenMP_ROOT environmental variable. E.g., on macOS: export OpenMP_ROOT=$(brew --prefix)/opt/libomp")
endif()


set(FASTFIELDSOLVERS_COMPILE_OPTIONS ${FASTFIELDSOLVERS_COMPILE_OPTIONS} -Wextra -Wall)

# -s: strip all symbols from the executable
set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -s")

Expand Down Expand Up @@ -123,6 +128,9 @@ if(${FASTFIELDSOLVERS_HEADLESS} MATCHES OFF)
endif()

add_executable (FasterCap ${FastFieldSolvers_Sources} ${FasterCap_Sources})

set (EXTRA_LIBS ${EXTRA_LIBS} -lm -lstdc++)

# Specify compile options to use when compiling a given target.
target_compile_options(FasterCap PUBLIC ${FASTFIELDSOLVERS_COMPILE_OPTIONS})
target_link_libraries(FasterCap ${EXTRA_LIBS} ${WXWIDGETS_LIBS} ${EIGEN_LIBS})
6 changes: 3 additions & 3 deletions README.md
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Expand Up @@ -21,7 +21,7 @@ The following software tools and complier chains are required. Used versions are

### MS Windows 64 bits

- CMake 3.6.0
- CMake 3.12
- Code::Blocks, version 13.12
- TDM-GCC 64 bits, version 4.8.1
- wxWidgets, version 3.0
Expand All @@ -36,7 +36,7 @@ The following software tools and complier chains are required. Used versions are

### Linux 64 bits

- CMake 2.8.12
- CMake 3.12
- Code::Blocks, version 13.12
- GCC, version 4.8.1
- wxWidgets (wxGTK), version 3.0
Expand All @@ -55,7 +55,7 @@ Then you can open Code::Blocks, open the FasterCap.cbp project file created by C

### Linux 64 bits headless

- CMake 3.5.1
- CMake 3.12
- GCC, version 4.8.1 or higher (higher version tested: on 5.4.0)
- wxWidgets, version 3.0.2 or higher (higher version tested: 3.0.2)

Expand Down