// TODO Merge util/build.c into here.

str options #option;
str target #option;

void Start() {
	SystemShellEnableLogging(false);

	assert PathCreateLeadingDirectories("bin/dependency_files");
	assert PathCreateLeadingDirectories("bin/Logs");
	assert PathCreateLeadingDirectories("bin/generated_code");
	assert PathCreateLeadingDirectories("bin/cache");
	assert PathCreateLeadingDirectories("bin/Object Files");

	if SystemGetHostName() == "Cygwin" {
		PrintStdErrWarning("Building on Cygwin is not supported. Use the Windows Subsystem for Linux instead.\n");
		assert false;
	}

	if SystemShellEvaluate("shasum -a 256 util/test.txt") 
			!= "2c5622dbbf2552e0e66424a302bde0918e09379afce47eef1a21ef0198990fed  util/test.txt\n" {
		PrintStdErrWarning("--------------------------------------------------------------------\n");
		PrintStdErrWarning("                  The source has been corrupted!!                   \n");
		PrintStdErrWarning("  Please check that you have disabled any automatic line-ending or  \n");
		PrintStdErrWarning(" encoding conversions in Git and archive extraction tools you use.  \n");
		PrintStdErrWarning("--------------------------------------------------------------------\n");
		assert false;
	}

	if StringContains(PathGetDefaultPrefix(), " ") {
		PrintStdErrWarning("Error: The path to your essence directory, '%PathGetDefaultPrefix()%', contains spaces.\n");
		assert false;
	}

	if !SystemShellExecute("which gcc  > /dev/null") { PrintStdErrWarning("Error: GCC was not found.\n");  assert false; }
	if !SystemShellExecute("which nasm > /dev/null") { PrintStdErrWarning("Error: Nasm was not found.\n"); assert false; }
	if !SystemShellExecute("which make > /dev/null") { PrintStdErrWarning("Error: Make was not found.\n"); assert false; }

	if target == "" {
		target = "TARGET_X86_64";
	}

	assert SystemShellExecute("gcc -o bin/build -g util/build.c -pthread -DPARALLEL_BUILD -D%target% "
			+ "-Wall -Wextra -Wno-missing-field-initializers");
	SystemShellExecute("bin/build %options%");

	PrintStdErrHighlight("\n");
}