From 4c5114250bb75fdbd83e36256469d4f291549388 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Sat, 20 Aug 2022 17:38:05 -0400
Subject: [Polly] Don't use `llvm-config` anymore (in CMake sad path)

If `LLVM_BUILD_MAIN_SRC_DIR` is not defined, just assume we are in
regular monorepo layout. Non-standard (and not really supported) layouts
can still be configured manually.

Reviewed By: beanz

Differential Revision: https://reviews.llvm.org/D132314
---
 polly/CMakeLists.txt | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

(limited to 'polly')

diff --git a/polly/CMakeLists.txt b/polly/CMakeLists.txt
index 6a6e78b..2e906fd 100644
--- a/polly/CMakeLists.txt
+++ b/polly/CMakeLists.txt
@@ -20,14 +20,11 @@ if(POLLY_STANDALONE_BUILD)
 
   # Sources available, too?
   if (LLVM_BUILD_MAIN_SRC_DIR)
-    set(LLVM_SOURCE_ROOT ${LLVM_BUILD_MAIN_SRC_DIR} CACHE PATH
-      "Path to LLVM source tree")
+    set(default_llvm_src "${LLVM_BUILD_MAIN_SRC_DIR}")
   else()
-    execute_process(COMMAND "${LLVM_TOOLS_BINARY_DIR}/llvm-config" --src-root
-      OUTPUT_VARIABLE MAIN_SRC_DIR
-      OUTPUT_STRIP_TRAILING_WHITESPACE)
-    set(LLVM_SOURCE_ROOT ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
+    set(default_llvm_src "${CMAKE_CURRENT_SOURCE_DIR}/../llvm")
   endif()
+  set(LLVM_SOURCE_ROOT ${default_llvm_src} CACHE PATH "Path to LLVM source tree")
 
   # Enable unit tests if available.
   set(POLLY_GTEST_AVAIL 0)
-- 
cgit v1.1