void-packages/srcpkgs/llvm12/patches/llvm-004-override-opt.patch

18 lines
645 B
Diff

This allows us to override the optimization level as not all platforms can
deal with -O3.
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -918,6 +918,12 @@ if( MINGW AND NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
llvm_replace_compiler_option(CMAKE_CXX_FLAGS_RELEASE "-O3" "-O2")
endif()
+set(VOID_CXX_OPT_FLAGS "" CACHE STRING "Optimization level to use")
+
+if (NOT VOID_CXX_OPT_FLAGS STREQUAL "")
+ llvm_replace_compiler_option(CMAKE_CXX_FLAGS_RELEASE "-O3" "${VOID_CXX_OPT_FLAGS}")
+endif()
+
# Put this before tblgen. Else we have a circular dependence.
add_subdirectory(lib/Demangle)
add_subdirectory(lib/Support)