update openmp flags

Author: jingnanshi

examples/teaser_cpp_fpfh/CMakeLists.txt

@@ -13,6 +13,7 @@ add_executable(teaser_cpp_fpfh teaser_cpp_fpfh.cc)
 # Link to teaserpp & Eigen3
 target_link_libraries(teaser_cpp_fpfh Eigen3::Eigen teaserpp::teaser_registration teaserpp::teaser_features
         teaserpp::teaser_io ${PCL_LIBRARIES})
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp")
 
 # Copy the data files to build directory
 file(COPY ../example_data/

examples/teaser_cpp_ply/CMakeLists.txt

@@ -11,6 +11,7 @@ add_executable(teaser_cpp_ply teaser_cpp_ply.cc)
 
 # Link to teaserpp & Eigen3
 target_link_libraries(teaser_cpp_ply Eigen3::Eigen teaserpp::teaser_registration teaserpp::teaser_io)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp")
 
 # Copy the data files to build directory
 file(COPY ../example_data/

teaser/CMakeLists.txt

@@ -35,7 +35,8 @@ target_include_directories(teaser_registration PUBLIC
 
 find_package(OpenMP)
 if(OpenMP_CXX_FOUND)
-    target_link_libraries(teaser_registration PRIVATE OpenMP::OpenMP_CXX)
+    target_link_libraries(teaser_registration PUBLIC OpenMP::OpenMP_CXX)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp")
 endif()
 
 install(TARGETS teaser_registration