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-rw-r--r--llvm/CMakeLists.txt6
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
index b9a49496222..642732ffe80 100644
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -95,7 +95,11 @@ if (LLVM_ENABLE_PROJECTS_USED OR NOT LLVM_ENABLE_PROJECTS STREQUAL "")
if(NOT EXISTS "${PROJ_DIR}" OR NOT IS_DIRECTORY "${PROJ_DIR}")
message(FATAL_ERROR "LLVM_ENABLE_PROJECTS requests ${proj} but directory not found: ${PROJ_DIR}")
endif()
- set(LLVM_EXTERNAL_${upper_proj}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../${proj}" CACHE STRING "")
+ if( LLVM_EXTERNAL_${upper_proj}_SOURCE_DIR STREQUAL "" )
+ set(LLVM_EXTERNAL_${upper_proj}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../${proj}" CACHE PATH "" FORCE)
+ else()
+ set(LLVM_EXTERNAL_${upper_proj}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../${proj}" CACHE PATH "")
+ endif()
elseif ("${proj}" IN_LIST LLVM_EXTERNAL_PROJECTS)
message(STATUS "${proj} project is enabled")
set(SHOULD_ENABLE_PROJECT TRUE)
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