Revert "Revert "Revert "[CMake] Bumps minimum version to 3.20.0."""
This reverts commit 1ef4c3c859728008cf707cad8d67f45ae5070ae1.
Two buildbots still haven't been updated.
GitOrigin-RevId: 44d38022ab29a3156349602733b3459df5beef93
diff --git a/CMakeLists.txt b/CMakeLists.txt
index bd49dfb..6f12a16 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
# Setup Project
#===============================================================================
-cmake_minimum_required(VERSION 3.20.0)
+cmake_minimum_required(VERSION 3.13.4)
set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1a5f4e0..cced6b4 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -35,7 +35,8 @@
# CMake doesn't work correctly with assembly on AIX. Workaround by compiling
# as C files as well.
if((APPLE AND CMAKE_VERSION VERSION_LESS 3.19) OR
- (MINGW AND CMAKE_VERSION VERSION_LESS 3.17))
+ (MINGW AND CMAKE_VERSION VERSION_LESS 3.17) OR
+ (${CMAKE_SYSTEM_NAME} MATCHES "AIX"))
set_source_files_properties(${LIBUNWIND_ASM_SOURCES} PROPERTIES LANGUAGE C)
endif()
