commit ac77f7300a75e42964bf04b64de6ca5455d877f5
author Michal Gorny <mgorny@gentoo.org> Wed Sep 14 17:46:27 2016 +0000
committer Copybara-Service <copybara-worker@google.com> Mon Aug 31 20:28:39 2020 -0700
tree 031307cc83cae159387f38c0a641c75b3fefdea4
parent a966c2da043080d4c9b775c3be8b9656772fd435

[cmake] Make libgomp & libiomp5 alias install optional

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.

Differential Revision: https://reviews.llvm.org/D24563

llvm-svn: 281512
GitOrigin-RevId: 23132ebb0e8b38c74e86acee8f2a42ad7b95307b

runtime/CMakeLists.txt

diff --git a/runtime/CMakeLists.txt b/runtime/CMakeLists.txt
index 9db058b..e8e9a74 100644
--- a/runtime/CMakeLists.txt
+++ b/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}")

runtime/src/CMakeLists.txt

diff --git a/runtime/src/CMakeLists.txt b/runtime/src/CMakeLists.txt
index 777434d..c80f88d 100644
--- a/runtime/src/CMakeLists.txt
+++ b/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