[CMake] Pass CMAKE_INSTALL_DO_STRIP to external projects

This is necessary to make install-<target>-stripped work for
external projects such as runtimes.

Differential Revision: https://reviews.llvm.org/D49335

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337115 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/cmake/modules/LLVMExternalProjectUtils.cmake b/cmake/modules/LLVMExternalProjectUtils.cmake
index bc6ac9f..f736c39 100644 (file)
--- a/cmake/modules/LLVMExternalProjectUtils.cmake
+++ b/cmake/modules/LLVMExternalProjectUtils.cmake
@@ -221,7 +221,7 @@ function(llvm_ExternalProject_Add name source_dir)
   endif()
 
   if(NOT ARG_NO_INSTALL)
-    install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -P ${BINARY_DIR}/cmake_install.cmake \)"
+    install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -DCMAKE_INSTALL_DO_STRIP=\${CMAKE_INSTALL_DO_STRIP} -P ${BINARY_DIR}/cmake_install.cmake\)"
       COMPONENT ${name})
 
     add_llvm_install_targets(install-${name}