These two patches fix cmake's ability to find OpenMP with base-clang and ports-gcc as patched earlier. This patch is a no-op without those. Tested on amd64.
John ? patches/patch-Modules_FindOpenMP_cmake Index: Makefile =================================================================== RCS file: /cvs/ports/devel/cmake/Makefile,v retrieving revision 1.173 diff -u -p -r1.173 Makefile --- Makefile 24 Apr 2019 16:26:54 -0000 1.173 +++ Makefile 13 Jun 2019 15:50:38 -0000 @@ -6,7 +6,7 @@ COMMENT = portable build system VER = 3.10.2 EPOCH = 0 -REVISION = 2 +REVISION = 3 DISTNAME = cmake-${VER} CATEGORIES = devel --- /dev/null Thu Jun 13 10:22:18 2019 +++ patches/patch-Modules_FindOpenMP_cmake Thu Jun 13 08:12:07 2019 @@ -0,0 +1,26 @@ +$OpenBSD$ +Add libs and paths. Ensure the lib is used for the C case. + +Index: Modules/FindOpenMP.cmake +--- Modules/FindOpenMP.cmake.orig ++++ Modules/FindOpenMP.cmake +@@ -82,8 +82,8 @@ function(_OPENMP_FLAG_CANDIDATES LANG) + if(NOT OpenMP_${LANG}_FLAG) + unset(OpenMP_FLAG_CANDIDATES) + +- set(OMP_FLAG_GNU "-fopenmp") +- set(OMP_FLAG_Clang "-fopenmp=libomp" "-fopenmp=libiomp5" "-fopenmp") ++ set(OMP_FLAG_GNU "-fopenmp -lgomp") ++ set(OMP_FLAG_Clang "-fopenmp -I/usr/local/include -Wl,-L/usr/local/lib,-lomp" ) + set(OMP_FLAG_HP "+Oopenmp") + if(WIN32) + set(OMP_FLAG_Intel "-Qopenmp") +@@ -124,7 +124,7 @@ set(OpenMP_C_CXX_TEST_SOURCE + #include <omp.h> + int main() { + #ifdef _OPENMP +- return 0; ++ return 0*omp_get_num_threads(); + #else + breaks_on_purpose + #endif