CMake: fixed a failure to reset CMAKE_REQUIRED_FLAGS (thanks, Martin!). This would break Emscripten builds with the CMake project files (etc). Fixes Bugzilla #3197.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 38ce0d7..9ab53d0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -382,7 +382,7 @@ if(USE_GCC OR USE_CLANG)
set(CMAKE_REQUIRED_FLAGS "-Wl,--no-undefined")
check_c_compiler_flag("" HAVE_NO_UNDEFINED)
- set(CMAKE_REQUIRED_FLAGS)
+ set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
if(HAVE_NO_UNDEFINED)
list(APPEND EXTRA_LDFLAGS "-Wl,--no-undefined")
endif()