[CMake]Allow user specified CPack Options

This should allow downstream vendors to install multiple LLVM distributions in parallel.

Should we also patch the default values to allow multiple upstream llvm distribution?

Reviewed By: thieta

Differential Revision: https://reviews.llvm.org/D138632

diff --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
index 2535114..0d6da92 100644 (file)
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -325,23 +325,31 @@ set(BUG_REPORT_URL "${PACKAGE_BUGREPORT}" CACHE STRING
   "Default URL where bug reports are to be submitted.")
 
 # Configure CPack.
-set(CPACK_PACKAGE_INSTALL_DIRECTORY "LLVM")
-set(CPACK_PACKAGE_VENDOR "LLVM")
+if(NOT DEFINED CPACK_PACKAGE_INSTALL_DIRECTORY)
+  set(CPACK_PACKAGE_INSTALL_DIRECTORY "LLVM")
+endif()
+if(NOT DEFINED CPACK_PACKAGE_VENDOR)
+  set(CPACK_PACKAGE_VENDOR "LLVM")
+endif()
 set(CPACK_PACKAGE_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
 set(CPACK_PACKAGE_VERSION_MINOR ${LLVM_VERSION_MINOR})
 set(CPACK_PACKAGE_VERSION_PATCH ${LLVM_VERSION_PATCH})
 set(CPACK_PACKAGE_VERSION ${PACKAGE_VERSION})
 set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.TXT")
-set(CPACK_NSIS_COMPRESSOR "/SOLID lzma \r\n SetCompressorDictSize 32")
 if(WIN32 AND NOT UNIX)
-  set(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "LLVM")
+  set(CPACK_NSIS_COMPRESSOR "/SOLID lzma \r\n SetCompressorDictSize 32")
+  if(NOT DEFINED CPACK_PACKAGE_INSTALL_REGISTRY_KEY)
+    set(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "LLVM")
+  endif()
   set(CPACK_PACKAGE_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_logo.bmp")
   set(CPACK_NSIS_MUI_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_icon.ico")
   set(CPACK_NSIS_MUI_UNIICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_icon.ico")
   set(CPACK_NSIS_MODIFY_PATH "ON")
   set(CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL "ON")
   if( CMAKE_CL_64 )
-    set(CPACK_NSIS_INSTALL_ROOT "$PROGRAMFILES64")
+    if(NOT DEFINED CPACK_NSIS_INSTALL_ROOT)
+      set(CPACK_NSIS_INSTALL_ROOT "$PROGRAMFILES64")
+    endif()
   endif()
 endif()
 include(CPack)