[Openmp-commits] [openmp] [OpenMP] Add libomp unit test infrastructure (PR #168063)

[Michael Kruse via Openmp-commits]

================
@@ -200,6 +211,31 @@ if(${LIBOMP_USE_HWLOC})
   )
 endif()
 
+# Build a testing version of libomp that exports all symbols for unit tests.
+# This library uses the same compiled objects as libomp, but with all symbols
+# exported to allow testing internal functions.
+if(NOT WIN32 AND NOT STUBS_LIBRARY)
+  set(LIBOMP_TEST_LDFLAGS ${LIBOMP_CONFIGURED_LDFLAGS})
+  # Replace the libomp exports with the test exports exporting all symbols.
+  if(LIBOMP_HAVE_VERSION_SCRIPT_FLAG)
+    string(REPLACE "${LIBOMP_SRC_DIR}/exports_so.txt"
+                   "${LIBOMP_SRC_DIR}/exports_test_so.txt"
+                   LIBOMP_TEST_LDFLAGS "${LIBOMP_TEST_LDFLAGS}")
+  endif()
+
+  # Create the testing library from the same objects as libomp.
+  add_library(omp_testing SHARED $<TARGET_OBJECTS:omp_objects>)
+  set_property(TARGET omp_testing PROPERTY FOLDER "OpenMP/Libraries")
+  target_link_libraries(omp_testing ${LIBOMP_CONFIGURED_LIBFLAGS} ${LIBOMP_DL_LIBS})
----------------
Meinersbur wrote:

```suggestion
  target_link_libraries(omp_testing PUBLIC ${LIBOMP_CONFIGURED_LIBFLAGS} ${LIBOMP_DL_LIBS})
```
for "modern CMake" style

https://github.com/llvm/llvm-project/pull/168063