package gcc {
	description = "The GNU Compiler Collection";
	website = "https://www.gnu.org/software/gcc";
	anitya = 6502;

	version# = "16.1.0";
	source = remoteTar {
		url = "https://ftp.tsukuba.wide.ad.jp/software/gcc/releases/"+
			"gcc-"+version+"/gcc-"+version+".tar.gz";
		checksum = "4ASoWbxaA2FW7PAB0zzHDPC5XnNhyaAyjtDPpGzceSLeYnEIXsNYZR3PA_Zu5P0K";
		compress = gzip;
	};
	patches = [
		"musl-off64_t-loff_t.patch",
		"musl-legacy-lfs.patch",
	];

	// GCC spends most of its time in its many configure scripts, however
	// it also saturates the CPU for a consequential amount of time.
	exclusive = true;

	exec = make {
		configure = {
			"disable-multilib";
			"enable-default-pie";
			"disable-nls";
			"with-gnu-as";
			"with-gnu-ld";
			"with-system-zlib";
			"enable-languages": "c,c++,go";
			"with-native-system-header-dir": "/system/include";
			"with-multilib-list": arch {
				amd64, arm64 = "''";
				default = unset;
			};
		};
		make = [
			"BOOT_CFLAGS='-O2 -g'",
			noop { key = value; } + "\x00",
			"bootstrap",
		];

		// This toolchain is hacked to pieces, it is not expected to ever work
		// well in its current state. That does not matter as long as the
		// toolchain it produces passes its own test suite.
		skip-check = true;
	};

	inputs = [
		binutils,

		mpc,
		zlib,
		libucontext,
		kernel-headers,
	];
}
