build: use lld or mold linkers in supported platforms

build-support/macros-and-definitions.cmake

@@ -234,6 +234,36 @@ if(${CLANG} AND APPLE)
   set(STATIC_LINK_FLAGS)
 endif()
 
+# Search for faster linkers mold and lld, and use them if available
+mark_as_advanced(MOLD LLD)
+find_program(MOLD mold)
+find_program(LLD ld.lld)
+
+# USING_FAST_LINKER will be defined if a fast linker is being used and its
+# content will correspond to the fast linker name
+
+# Mold support was added in GCC 12.1.0
+if(NOT USING_FAST_LINKER
+   AND NOT (${MOLD} STREQUAL "MOLD-NOTFOUND")
+   AND LINUX
+   AND ${GCC}
+   AND (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 12.1.0)
+)
+  set(USING_FAST_LINKER MOLD)
+  add_link_options("-fuse-ld=mold")
+endif()
+
+if(NOT USING_FAST_LINKER AND NOT (${LLD} STREQUAL "LLD-NOTFOUND")
+   AND (${GCC} OR ${CLANG})
+)
+  set(USING_FAST_LINKER LLD)
+  add_link_options("-fuse-ld=lld")
+  if(WIN32)
+    # Clear unsupported linker flags on Windows
+    set(LIB_AS_NEEDED_PRE)
+  endif()
+endif()
+
 # Include CMake files used for compiler checks
 include(CheckIncludeFile) # Used to check a single C header at a time
 include(CheckIncludeFileCXX) # Used to check a single C++ header at a time