Workaround lack of dead code elimination

Sun/vendor/Soup/build_common.php

@@ -0,0 +1,75 @@
+<?php
+// Config
+$clang = $argv[1] ?? "clang";
+$clang .= " -std=c++17 -fno-rtti -O3 -ffunction-sections -fdata-sections";
+if (defined("PHP_WINDOWS_VERSION_MAJOR"))
+{
+	$clang .= " -D_CRT_SECURE_NO_WARNINGS";
+}
+else if (PHP_OS_FAMILY != "Darwin")
+{
+	$clang .= " -fPIC";
+}
+
+$clanglink = $clang;
+if (!defined("PHP_WINDOWS_VERSION_MAJOR"))
+{
+	$clanglink .= " -lstdc++ -pthread -lm -ldl";
+	if (!getenv("ANDROID_ROOT"))
+	{
+		$clanglink .= " -lresolv";
+	}
+	if (PHP_OS_FAMILY != "Darwin")
+	{
+		$clanglink .= " -fuse-ld=lld";
+		if (!getenv("ANDROID_ROOT"))
+		{
+			$clanglink .= " -lstdc++fs";
+		}
+	}
+}
+
+// Utilities
+$procs = [];
+
+function run_command_async($cmd)
+{
+	global $procs;
+	echo ".";
+	$file = tmpfile();
+	$descriptorspec = array(
+		0 => array("pipe", "r"),
+		1 => array("file", stream_get_meta_data($file)["uri"], "a"),
+		2 => array("file", stream_get_meta_data($file)["uri"], "a"),
+	);
+	$proc = proc_open($cmd, $descriptorspec, $pipes);
+	array_push($procs, [ $proc, $file ]);
+	if (count($procs) >= (getenv("ANDROID_ROOT") ? 16 : 32))
+	{
+		await_commands();
+	}
+}
+
+function await_commands()
+{
+	global $procs;
+	echo "\r";
+	$output = "";
+	while (count($procs) != 0)
+	{
+		foreach ($procs as $i => $proc)
+		{
+			if (!proc_get_status($proc[0])["running"])
+			{
+				echo "█";
+				$output .= stream_get_contents($proc[1]);
+				fclose($proc[1]);
+				proc_close($proc[0]);
+				unset($procs[$i]);
+			}
+		}
+		usleep(50000);
+	}
+	echo "\n";
+	echo $output;
+}

Sun/vendor/Soup/build_lib.php

@@ -1,5 +1,8 @@
 <?php
-require "build_config.php";
+require "build_common.php";
+
+$cd = getcwd();
+chdir(__DIR__);
 
 // Setup folders
 if(!is_dir(__DIR__."/bin"))
@@ -11,29 +14,28 @@
 	mkdir(__DIR__."/bin/int");
 }
 
-// Find work
+echo "Compiling...\n";
 $files = [];
+$objects = [];
 foreach(scandir(__DIR__."/soup") as $file)
 {
 	if(substr($file, -4) == ".cpp")
 	{
-		array_push($files, substr($file, 0, -4));
+		$file = substr($file, 0, -4);
+		run_command_async("$clang -c ".__DIR__."/soup/$file.cpp -o ".__DIR__."/bin/int/$file.o");
+		array_push($objects, escapeshellarg("bin/int/$file.o"));
 	}
 }
-
-echo "Compiling...\n";
-$objects = [];
-foreach($files as $file)
-{
-	echo $file."\n";
-	passthru("$clang -c ".__DIR__."/soup/$file.cpp -o ".__DIR__."/bin/int/$file.o");
-	array_push($objects, escapeshellarg(__DIR__."/bin/int/$file.o"));
-}
+await_commands();
 
 echo "Bundling static lib...\n";
 $archiver = "ar";
+$libname = "libsoup.a";
 if (defined("PHP_WINDOWS_VERSION_MAJOR"))
 {
 	$archiver = "llvm-ar";
+	$libname = "soup.lib";
 }
-passthru("$archiver rc libsoup.a ".join(" ", $objects));
+passthru("$archiver rc $libname ".join(" ", $objects));
+
+chdir($cd);

Sun/vendor/Soup/soup/Compiler.cpp

@@ -35,6 +35,7 @@ NAMESPACE_SOUP
 #if SOUP_WINDOWS
 			"-D_CRT_SECURE_NO_WARNINGS",
 #endif
+			"-ffunction-sections", "-fdata-sections", // needed for dead code elimination
 			"-std="
 		};
 		args.back().append(lang);