[CMake] Include ZLIB_ROOT in LLVMConfig.cmake

Include the value of `ZLIB_ROOT` in `LLVMConfig.cmake` so `FindZLIB` can pick it up. This fixes an issue where ZLIB is not found on AIX runtimes despite specifying `-DZLIB_ROOT`.

Reviewed By: daltenty

Differential Revision: https://reviews.llvm.org/D116235

diff --git a/llvm/cmake/modules/LLVMConfig.cmake.in b/llvm/cmake/modules/LLVMConfig.cmake.in
index 425d3ed..7d64aa6 100644 (file)
--- a/llvm/cmake/modules/LLVMConfig.cmake.in
+++ b/llvm/cmake/modules/LLVMConfig.cmake.in
@@ -69,6 +69,7 @@ set(LLVM_ENABLE_UNWIND_TABLES @LLVM_ENABLE_UNWIND_TABLES@)
 
 set(LLVM_ENABLE_ZLIB @LLVM_ENABLE_ZLIB@)
 if(LLVM_ENABLE_ZLIB)
+  set(ZLIB_ROOT @ZLIB_ROOT@)
   find_package(ZLIB)
 endif()