abort compilation if cfg not found (#1881)

* abort compilation if cfg not found * more precise checks * nicer error
EnzymeAD · May 14, 2024 · cf89592 · cf89592
1 parent 759d272
commit cf89592
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/enzyme/CMakeLists.txt b/enzyme/CMakeLists.txt
@@ -51,6 +51,11 @@ get_filename_component(LLVM_ABSOLUTE_DIR
     "${LLVM_DIR}"
     REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
 
+if (NOT EXISTS "${LLVM_DIR}")
+  message("Looking for LLVM_DIR at ${LLVM_DIR}")
+  message(SEND_ERROR "The given LLVM_DIR does not exist. Typo?")
+endif()
+
 set(LLVM_DIR "${LLVM_ABSOLUTE_DIR}" CACHE FILEPATH "b" FORCE)
 
 if (EXISTS "${LLVM_DIR}/lib/cmake/llvm/LLVMConfig.cmake")