Added mold linker support.

premake4.lua

@@ -160,6 +160,7 @@ newoption { trigger = "with-gles1", description = "Compile with GLES1 support" }
 newoption { trigger = "with-mojoal", description = "Compile with mojoAL as OpenAL implementation instead of using openal-soft (requires SDL2 backend)" }
 newoption { trigger = "use-frameworks", description = "In macOS it will try to link the external libraries from its frameworks. For example, instead of linking against SDL2 it will link agains SDL2.framework." }
 newoption { trigger = "with-emscripten-pthreads", description = "Enables emscripten build to use posix threads" }
+newoption { trigger = "with-mold-linker", description = "Tries to use the mold linker instead of the default linker of the toolchain" }
 newoption {
 	trigger = "with-backend",
 	description = "Select the backend to use for window and input handling.\n\t\t\tIf no backend is selected or if the selected is not installed the script will search for a backend present in the system, and will use it.",
@@ -387,6 +388,29 @@ function fix_shared_lib_linking_path( package_name, libname )
 	end
 end
 
+function version_to_number( version )
+	versionpart = 0
+	versionnum = 0
+	versionmod = 1000
+	for str in string.gmatch(version, "[^%.]+") do
+		versionnum = versionnum + tonumber(str) * versionmod
+		versionpart = versionpart + 1
+		if versionpart == 1 then
+			versionmod = 100
+		elseif versionpart == 2 then
+			versionmod = 10
+		end
+	end
+	return versionnum
+end
+
+function popen( executable_path )
+	local handle = io.popen(executable_path)
+	local result = handle:read("*a")
+	handle:close()
+	return result
+end
+
 function build_link_configuration( package_name, use_ee_icon )
 	includedirs { "include" }
 
@@ -444,6 +468,20 @@ function build_link_configuration( package_name, use_ee_icon )
 		end
 	end
 
+	if _OPTIONS["with-mold-linker"] then
+		if _OPTIONS.platform == "clang" or _OPTIONS.platform == "clang-analyzer" then
+			linkoptions { "-fuse-ld=mold" }
+		else
+			gccversion = popen( "gcc -dumpfullversion" )
+			gccversionnumber = version_to_number( gccversion )
+			if gccversionnumber >= 12110 then
+				linkoptions { "-fuse-ld=mold" }
+			else
+				linkoptions { "-B/usr/bin/mold" }
+			end
+		end
+	end
+
 	configuration "debug"
 		defines { "DEBUG", "EE_DEBUG", "EE_MEMORY_MANAGER" }
 		flags { "Symbols" }

premake5.lua

@@ -8,6 +8,7 @@ newoption { trigger = "with-mojoal", description = "Compile with mojoAL as OpenA
 newoption { trigger = "use-frameworks", description = "In macOS it will try to link the external libraries from its frameworks. For example, instead of linking against SDL2 it will link against SDL2.framework." }
 newoption { trigger = "windows-vc-build", description = "This is used to build the framework in Visual Studio downloading its external dependencies and making them available to the VS project without having to install them manually." }
 newoption { trigger = "with-emscripten-pthreads", description = "Enables emscripten build to use posix threads" }
+newoption { trigger = "with-mold-linker", description = "Tries to use the mold linker instead of the default linker of the toolchain" }
 newoption {
 	trigger = "with-backend",
 	description = "Select the backend to use for window and input handling.\n\t\t\tIf no backend is selected or if the selected is not installed the script will search for a backend present in the system, and will use it.",
@@ -102,7 +103,7 @@ function download_and_extract_sdl(sdl_url)
 	print("Downloading: " .. sdl_url)
 	local dest_dir = "src/thirdparty/"
 	local local_file = dest_dir .. remote_sdl2_version .. ".zip"
-	local result_str, response_code = http.download(sdl_url, local_file)
+	local _, response_code = http.download(sdl_url, local_file)
 	if response_code == 200 then
 		print("Downloaded successfully to: " .. local_file)
 		zip.extract(local_file, dest_dir)
@@ -113,6 +114,22 @@ function download_and_extract_sdl(sdl_url)
 	end
 end
 
+function version_to_number( version )
+	versionpart = 0
+	versionnum = 0
+	versionmod = 1000
+	for str in string.gmatch(version, "[^%.]+") do
+		versionnum = versionnum + tonumber(str) * versionmod
+		versionpart = versionpart + 1
+		if versionpart == 1 then
+			versionmod = 100
+		elseif versionpart == 2 then
+			versionmod = 10
+		end
+	end
+	return versionnum
+end
+
 function download_and_extract_dependencies()
 	if not os.isdir("src/thirdparty/" .. remote_sdl2_version) then
 		if _OPTIONS["windows-vc-build"] then
@@ -210,6 +227,20 @@ function build_link_configuration( package_name, use_ee_icon )
 		end
 	end
 
+	if _OPTIONS["with-mold-linker"] then
+		if _OPTIONS.platform == "clang" or _OPTIONS.platform == "clang-analyzer" then
+			linkoptions { "-fuse-ld=mold" }
+		else
+			gccversion = os.outputof( "gcc -dumpfullversion" )
+			gccversionnumber = version_to_number( gccversion )
+			if gccversionnumber >= 12110 then
+				linkoptions { "-fuse-ld=mold" }
+			else
+				linkoptions { "-B/usr/bin/mold" }
+			end
+		end
+	end
+
 	set_ios_config()
 	set_xcode_config()
 	build_arch_configuration()

projects/linux/ee.creator.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 7.0.0, 2022-04-01T00:37:29. -->
+<!-- Written by QtCreator 7.0.1, 2022-06-04T01:27:29. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>
@@ -186,7 +186,7 @@
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
-      <value type="QString" key="ProjectExplorer.ProcessStep.Arguments">--with-mojoal gmake</value>
+      <value type="QString" key="ProjectExplorer.ProcessStep.Arguments">--with-mojoal --with-mold-linker gmake</value>
       <value type="QString" key="ProjectExplorer.ProcessStep.Command">premake4</value>
       <value type="QString" key="ProjectExplorer.ProcessStep.WorkingDirectory">%{buildDir}../../../</value>
       <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.ProcessStep</value>
@@ -227,7 +227,7 @@
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
-      <value type="QString" key="ProjectExplorer.ProcessStep.Arguments">--with-mojoal gmake</value>
+      <value type="QString" key="ProjectExplorer.ProcessStep.Arguments">--with-mold-linker --with-mojoal gmake</value>
       <value type="QString" key="ProjectExplorer.ProcessStep.Command">premake4</value>
       <value type="QString" key="ProjectExplorer.ProcessStep.WorkingDirectory">%{buildDir}../../../</value>
       <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.ProcessStep</value>