[openmp] Disable archer if LIBOMP_OMPT_SUPPORT is off

This fixed build failures due to missing ompt headers.

See https://bugs.gentoo.org/700762.

Differential Revision: https://reviews.llvm.org/D73249

(cherry picked from commit 3c545e4)

Author: mgorny

openmp/tools/archer/CMakeLists.txt

@@ -8,13 +8,15 @@
 
 
 
-include_directories(${LIBOMP_INCLUDE_DIR})
+if(LIBOMP_OMPT_SUPPORT)
+  include_directories(${LIBOMP_INCLUDE_DIR})
 
-add_library(archer SHARED ompt-tsan.cpp)
-add_library(archer_static STATIC ompt-tsan.cpp)
+  add_library(archer SHARED ompt-tsan.cpp)
+  add_library(archer_static STATIC ompt-tsan.cpp)
 
-install(TARGETS archer archer_static
-  LIBRARY DESTINATION ${OPENMP_INSTALL_LIBDIR}
-  ARCHIVE DESTINATION ${OPENMP_INSTALL_LIBDIR})
+  install(TARGETS archer archer_static
+    LIBRARY DESTINATION ${OPENMP_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${OPENMP_INSTALL_LIBDIR})
 
-add_subdirectory(tests)
+  add_subdirectory(tests)
+endif()