Merge pull request OpenMathLib#4278 from martin-frbg/issue4277

CirrusCI: Add FreeBSD clang/gfortran build with OpenMP

.cirrus.yml

@@ -148,6 +148,16 @@ FreeBSD_task:
   - ls -l /usr/local/lib
   - gmake CC=gcc INTERFACE64=1
 
+FreeBSD_task:
+  name: FreeBSD-clang-openmp
+  freebsd_instance:
+    image_family: freebsd-13-2
+  install_script:
+  - pkg update -f && pkg upgrade -y && pkg install -y gmake gcc 
+  - ln -s /usr/local/lib/gcc12/libgfortran.so.5.0.0 /usr/lib/libgfortran.so
+  compile_script:
+  - gmake CC=clang FC=gfortran USE_OPENMP=1 CPP_THREAD_SAFETY_TEST=1
+
 #task:
 #  name: Windows/LLVM16     --- too slow ---
 #  windows_container: