[lld] r294690 - [CMake] Fix pthread handling for out-of-tree builds

[Eric Fiselier via llvm-commits]

Author: ericwf
Date: Thu Feb  9 19:59:20 2017
New Revision: 294690

URL: http://llvm.org/viewvc/llvm-project?rev=294690&view=rev
Log:
[CMake] Fix pthread handling for out-of-tree builds

LLVM defines `PTHREAD_LIB` which is used by AddLLVM.cmake and various projects
to correctly link the threading library when needed. Unfortunately
`PTHREAD_LIB` is defined by LLVM's `config-ix.cmake` file which isn't installed
and therefore can't be used when configuring out-of-tree builds. This causes
such builds to fail since `pthread` isn't being correctly linked.

This patch attempts to fix that problem by renaming and exporting
`LLVM_PTHREAD_LIB` as part of`LLVMConfig.cmake`. I renamed `PTHREAD_LIB`
because It seemed likely to cause collisions with downstream users of
`LLVMConfig.cmake`.

Modified:
    lld/trunk/COFF/CMakeLists.txt
    lld/trunk/ELF/CMakeLists.txt
    lld/trunk/lib/ReaderWriter/MachO/CMakeLists.txt
    lld/trunk/unittests/CoreTests/CMakeLists.txt

Modified: lld/trunk/COFF/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/COFF/CMakeLists.txt?rev=294690&r1=294689&r2=294690&view=diff
==============================================================================
--- lld/trunk/COFF/CMakeLists.txt (original)
+++ lld/trunk/COFF/CMakeLists.txt Thu Feb  9 19:59:20 2017
@@ -43,7 +43,7 @@ add_lld_library(lldCOFF
 
   LINK_LIBS
   lldCore
-  ${PTHREAD_LIB}
+  ${LLVM_PTHREAD_LIB}
 
   DEPENDS
   COFFOptionsTableGen

Modified: lld/trunk/ELF/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/CMakeLists.txt?rev=294690&r1=294689&r2=294690&view=diff
==============================================================================
--- lld/trunk/ELF/CMakeLists.txt (original)
+++ lld/trunk/ELF/CMakeLists.txt Thu Feb  9 19:59:20 2017
@@ -54,7 +54,7 @@ add_lld_library(lldELF
   LINK_LIBS
   lldConfig
   lldCore
-  ${PTHREAD_LIB}
+  ${LLVM_PTHREAD_LIB}
 
   DEPENDS
   ELFOptionsTableGen

Modified: lld/trunk/lib/ReaderWriter/MachO/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/ReaderWriter/MachO/CMakeLists.txt?rev=294690&r1=294689&r2=294690&view=diff
==============================================================================
--- lld/trunk/lib/ReaderWriter/MachO/CMakeLists.txt (original)
+++ lld/trunk/lib/ReaderWriter/MachO/CMakeLists.txt Thu Feb  9 19:59:20 2017
@@ -28,7 +28,7 @@ add_lld_library(lldMachO
   LINK_LIBS
     lldCore
     lldYAML
-    ${PTHREAD_LIB}
+    ${LLVM_PTHREAD_LIB}
   )
 
 include_directories(.)

Modified: lld/trunk/unittests/CoreTests/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/unittests/CoreTests/CMakeLists.txt?rev=294690&r1=294689&r2=294690&view=diff
==============================================================================
--- lld/trunk/unittests/CoreTests/CMakeLists.txt (original)
+++ lld/trunk/unittests/CoreTests/CMakeLists.txt Thu Feb  9 19:59:20 2017
@@ -3,5 +3,5 @@ add_lld_unittest(CoreTests
   )
 
 target_link_libraries(CoreTests
-  ${PTHREAD_LIB}
+  ${LLVM_PTHREAD_LIB}
   )