[llvm] e66eabe - [llvm][cmake] Add clang if not already present when building lldb (#149055)

[via llvm-commits]

Author: David Spickett
Date: 2025-07-17T10:28:56+01:00
New Revision: e66eabee0022af60347e83ef2c0d4b6dbfb7f0a5

URL: https://github.com/llvm/llvm-project/commit/e66eabee0022af60347e83ef2c0d4b6dbfb7f0a5
DIFF: https://github.com/llvm/llvm-project/commit/e66eabee0022af60347e83ef2c0d4b6dbfb7f0a5.diff

LOG: [llvm][cmake] Add clang if not already present when building lldb (#149055)

Fixes https://github.com/llvm/llvm-project/issues/54555

This follows flang's pattern, it adds clang if you don't have it in
LLVM_ENABLE_PROJECTS.

Added: 
    

Modified: 
    llvm/CMakeLists.txt

Removed: 
    


################################################################################
diff  --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
index 3f8201fa426fe..903461b39902e 100644
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -179,6 +179,13 @@ if ("flang" IN_LIST LLVM_ENABLE_PROJECTS)
   endif ()
 endif()
 
+if ("lldb" IN_LIST LLVM_ENABLE_PROJECTS)
+  if (NOT "clang" IN_LIST LLVM_ENABLE_PROJECTS)
+    message(STATUS "Enabling clang as a dependency of lldb")
+    list(APPEND LLVM_ENABLE_PROJECTS "clang")
+  endif()
+endif ()
+
 if ("libc" IN_LIST LLVM_ENABLE_PROJECTS)
   message(WARNING "Using LLVM_ENABLE_PROJECTS=libc is deprecated.  Please use "
     "-DLLVM_ENABLE_RUNTIMES=libc or see the instructions at "