$NetBSD: patch-CMakeLists.txt,v 1.1 2024/06/20 17:02:50 charlotte Exp $

Don't attempt to deal with link-time optimization manually; CMake is smart
enough to figure it out on its own.

--- CMakeLists.txt.orig	2020-02-12 22:30:26.516115047 -0800
+++ CMakeLists.txt	2020-02-12 22:30:36.341115137 -0800
@@ -91,38 +91,6 @@
 	endforeach()
 endfunction()
 
-CHECK_CXX_COMPILER_FLAG("-flto" USE_GCC_STYLE_LTCG)
-if(USE_GCC_STYLE_LTCG)
-	set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -flto")
-	set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -flto")
-	add_linker_flags(optimized MODULES exe shared FLAGS -flto)
-
-	# Use GCC's ar and ranlib wrappers if necessary, because the plain ones 
-	# don't understand lto objects without an explicit plugin parameter
-	if(CMAKE_C_COMPILER MATCHES "gcc$")
-		set(LTCG_NEEDS_AR_WRAPPER 1)
-		set(LTCG_AR_WRAPPER_PREFIX "${CMAKE_C_COMPILER}")
-	elseif(CMAKE_C_COMPILER MATCHES "cc$")
-		set(LTCG_NEEDS_AR_WRAPPER 1)
-		set(LTCG_AR_WRAPPER_PREFIX "gcc")
-	else()
-		set(LTCG_NEEDS_AR_WRAPPER 0)
-	endif()
-
-	if(LTCG_NEEDS_AR_WRAPPER)
-		find_program(AR_WRAPPER "${LTCG_AR_WRAPPER_PREFIX}-ar")
-		if (AR_WRAPPER)
-			message("Using ${AR_WRAPPER} instead of ${CMAKE_AR} to support lto objects.")
-			set(CMAKE_AR "${AR_WRAPPER}" CACHE FILEPATH "Path to an ar that supports lto objects." FORCE)
-		endif()
-		find_program(RANLIB_WRAPPER "${LTCG_AR_WRAPPER_PREFIX}-ranlib")
-		if (RANLIB_WRAPPER)
-			message("Using ${RANLIB_WRAPPER} instead of ${CMAKE_RANLIB} to support lto objects.")
-			set(CMAKE_RANLIB "${RANLIB_WRAPPER}" CACHE FILEPATH "Path to a ranlib that supports lto objects." FORCE)
-		endif()
-	endif()
-endif()
-
 if(MSVC)
 	if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
 		# Set up some additional flags only if we're using the MS compiler,