[Openmp-commits] [PATCH] D24563: [openmp] [cmake] Make libgomp & libiomp5 alias install optional

[Michał Górny via Openmp-commits]

mgorny created this revision.
mgorny added a reviewer: jlpeyton.
mgorny added a subscriber: openmp-commits.
Herald added subscribers: mgorny, beanz.

Introduce a new LIBOMP_INSTALL_VARIABLES cache variable that can be used to disable creating libgomp and libiomp5 aliases on 'make install'. Those aliases are undesired e.g. on Gentoo systems where libomp is used purely by clang.

https://reviews.llvm.org/D24563

Files:
  runtime/CMakeLists.txt
  runtime/src/CMakeLists.txt

Index: runtime/src/CMakeLists.txt
===================================================================
--- runtime/src/CMakeLists.txt
+++ runtime/src/CMakeLists.txt
@@ -305,13 +305,15 @@
 
   install(TARGETS omp ${LIBOMP_INSTALL_KIND} DESTINATION lib${LIBOMP_LIBDIR_SUFFIX})
 
-  # Create aliases (symlinks) of the library for backwards compatibility
-  set(LIBOMP_ALIASES "libgomp;libiomp5")
-  foreach(alias IN LISTS LIBOMP_ALIASES)
-    install(CODE "execute_process(COMMAND \"\${CMAKE_COMMAND}\" -E create_symlink \"${LIBOMP_LIB_FILE}\"
-      \"${alias}${LIBOMP_LIBRARY_SUFFIX}\" WORKING_DIRECTORY
-      \$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/lib${LIBOMP_LIBDIR_SUFFIX})")
-  endforeach()
+  if(${LIBOMP_INSTALL_ALIASES})
+    # Create aliases (symlinks) of the library for backwards compatibility
+    set(LIBOMP_ALIASES "libgomp;libiomp5")
+    foreach(alias IN LISTS LIBOMP_ALIASES)
+      install(CODE "execute_process(COMMAND \"\${CMAKE_COMMAND}\" -E create_symlink \"${LIBOMP_LIB_FILE}\"
+        \"${alias}${LIBOMP_LIBRARY_SUFFIX}\" WORKING_DIRECTORY
+        \$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/lib${LIBOMP_LIBDIR_SUFFIX})")
+    endforeach()
+  endif()
 endif()
 install(
   FILES
Index: runtime/CMakeLists.txt
===================================================================
--- runtime/CMakeLists.txt
+++ runtime/CMakeLists.txt
@@ -340,6 +340,10 @@
 
 set(LIBOMP_LIB_FILE ${LIBOMP_LIB_NAME}${LIBOMP_LIBRARY_SUFFIX})
 
+# Optional backwards compatibility aliases.
+set(LIBOMP_INSTALL_ALIASES TRUE CACHE BOOL
+  "Install libgomp and libiomp5 library aliases for backwards compatibility")
+
 # Print configuration after all variables are set.
 if(${LIBOMP_STANDALONE_BUILD})
   libomp_say("Operating System     -- ${CMAKE_SYSTEM_NAME}")


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