[llvm] r295481 - [CMake] Support externalizing debug info on non-Darwin platforms

[Petr Hosek via llvm-commits]

Author: phosek
Date: Fri Feb 17 13:29:12 2017
New Revision: 295481

URL: http://llvm.org/viewvc/llvm-project?rev=295481&view=rev
Log:
[CMake] Support externalizing debug info on non-Darwin platforms

On other platorms, we use objcopy to export the debug info.

Differential Revision: https://reviews.llvm.org/D28575

Modified:
    llvm/trunk/cmake/modules/AddLLVM.cmake

Modified: llvm/trunk/cmake/modules/AddLLVM.cmake
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/cmake/modules/AddLLVM.cmake?rev=295481&r1=295480&r2=295481&view=diff
==============================================================================
--- llvm/trunk/cmake/modules/AddLLVM.cmake (original)
+++ llvm/trunk/cmake/modules/AddLLVM.cmake Fri Feb 17 13:29:12 2017
@@ -1387,7 +1387,11 @@ function(llvm_externalize_debuginfo name
   endif()
 
   if(NOT LLVM_EXTERNALIZE_DEBUGINFO_SKIP_STRIP)
-    set(strip_command COMMAND xcrun strip -Sxl $<TARGET_FILE:${name}>)
+    if(APPLE)
+      set(strip_command COMMAND xcrun strip -Sxl $<TARGET_FILE:${name}>)
+    else()
+      set(strip_command COMMAND strip -gx $<TARGET_FILE:${name}>)
+    endif()
   endif()
 
   if(APPLE)
@@ -1403,7 +1407,11 @@ function(llvm_externalize_debuginfo name
       ${strip_command}
       )
   else()
-    message(FATAL_ERROR "LLVM_EXTERNALIZE_DEBUGINFO isn't implemented for non-darwin platforms!")
+    add_custom_command(TARGET ${name} POST_BUILD
+      COMMAND objcopy --only-keep-debug $<TARGET_FILE:${name}> $<TARGET_FILE:${name}>.debug
+      ${strip_command} -R .gnu_debuglink
+      COMMAND objcopy --add-gnu-debuglink=$<TARGET_FILE:${name}>.debug $<TARGET_FILE:${name}>
+      )
   endif()
 endfunction()