[Openmp-commits] [PATCH] D34632: Check for libdl, and only use it when available

[Dimitry Andric via Phabricator via Openmp-commits]

dim created this revision.
Herald added a subscriber: mgorny.

On BSDs, there is no `libdl.so`, and functions like `dlopen` are implemented in the main C library instead. Check for the existence of `libdl` in the main CMakeLists.txt file, and only use it if it exists.


Repository:
  rL LLVM

https://reviews.llvm.org/D34632

Files:
  libomptarget/CMakeLists.txt


Index: libomptarget/CMakeLists.txt
===================================================================
--- libomptarget/CMakeLists.txt
+++ libomptarget/CMakeLists.txt
@@ -94,8 +94,11 @@
   
   # Build libomptarget library with libdl dependency.
   add_library(omptarget SHARED ${src_files})
+  check_library_exists(dl dlopen "" HAVE_LIBDL)
+  if(HAVE_LIBDL)
+    target_link_libraries(omptarget dl)
+  endif()
   target_link_libraries(omptarget
-    dl
     "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/exports")
   
   # Install libomptarget under the lib destination folder.


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