19f3be3638
Steps towards support for musl-unknown-linux-uclibc Hello! I've been working towards resolving https://github.com/rust-lang/libc/issues/361 , this PR compiles successfully with a newish compiler (with some minor fixes in `gcc`, `ctest`), and all the tests pass for `libc-ctest`. Basically most of the undefined functions, constants, and structs were just removed from the ctest, and then any constants that weren't correct were fixed. Would it make more sense to conditionally remove them from libc? I wasn't sure when it was appropriate to skip the test for it instead of removing the function/constants, so I just removed all the tests for now because that was a little easier than hunting them down. I'm also guessing the way some of the constants were conditionally set wasn't the correct style, would you guys have any advice on how to do it more correctly? Lemme know how it looks!
568 lines
20 KiB
Rust
568 lines
20 KiB
Rust
#![deny(warnings)]
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extern crate ctest;
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use std::env;
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fn main() {
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let target = env::var("TARGET").unwrap();
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let aarch64 = target.contains("aarch64");
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let x86_64 = target.contains("x86_64");
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let windows = target.contains("windows");
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let mingw = target.contains("windows-gnu");
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let linux = target.contains("unknown-linux");
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let android = target.contains("android");
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let apple = target.contains("apple");
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let musl = target.contains("musl");
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let uclibc = target.contains("uclibc");
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let freebsd = target.contains("freebsd");
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let dragonfly = target.contains("dragonfly");
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let mips = target.contains("mips");
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let netbsd = target.contains("netbsd");
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let openbsd = target.contains("openbsd");
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let rumprun = target.contains("rumprun");
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let bsdlike = freebsd || apple || netbsd || openbsd || dragonfly;
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let mut cfg = ctest::TestGenerator::new();
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// Pull in extra goodies
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if linux || android {
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cfg.define("_GNU_SOURCE", None);
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} else if netbsd {
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cfg.define("_NETBSD_SOURCE", Some("1"));
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} else if windows {
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cfg.define("_WIN32_WINNT", Some("0x8000"));
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}
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// Android doesn't actually have in_port_t but it's much easier if we
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// provide one for us to test against
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if android {
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cfg.define("in_port_t", Some("uint16_t"));
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}
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cfg.header("errno.h")
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.header("fcntl.h")
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.header("limits.h")
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.header("locale.h")
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.header("stddef.h")
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.header("stdint.h")
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.header("stdio.h")
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.header("stdlib.h")
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.header("sys/stat.h")
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.header("sys/types.h")
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.header("time.h")
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.header("wchar.h");
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if windows {
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cfg.header("winsock2.h"); // must be before windows.h
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cfg.header("direct.h");
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cfg.header("io.h");
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cfg.header("sys/utime.h");
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cfg.header("windows.h");
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cfg.header("process.h");
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cfg.header("ws2ipdef.h");
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if target.contains("gnu") {
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cfg.header("ws2tcpip.h");
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}
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} else {
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cfg.flag("-Wno-deprecated-declarations");
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cfg.header("ctype.h");
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cfg.header("dirent.h");
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if openbsd {
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cfg.header("sys/socket.h");
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}
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cfg.header("net/if.h");
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cfg.header("netdb.h");
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cfg.header("netinet/in.h");
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cfg.header("netinet/ip.h");
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cfg.header("netinet/tcp.h");
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cfg.header("resolv.h");
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cfg.header("pthread.h");
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cfg.header("dlfcn.h");
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cfg.header("signal.h");
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cfg.header("string.h");
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cfg.header("sys/file.h");
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cfg.header("sys/ioctl.h");
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cfg.header("sys/mman.h");
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cfg.header("sys/resource.h");
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cfg.header("sys/socket.h");
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cfg.header("sys/time.h");
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cfg.header("sys/un.h");
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cfg.header("sys/wait.h");
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cfg.header("unistd.h");
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cfg.header("utime.h");
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cfg.header("pwd.h");
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cfg.header("grp.h");
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cfg.header("sys/utsname.h");
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cfg.header("sys/ptrace.h");
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cfg.header("sys/mount.h");
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cfg.header("sys/uio.h");
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cfg.header("sched.h");
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cfg.header("termios.h");
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cfg.header("poll.h");
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cfg.header("syslog.h");
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cfg.header("semaphore.h");
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cfg.header("sys/statvfs.h");
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}
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if android {
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if !aarch64 && !x86_64 {
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// time64_t is not define for aarch64 and x86_64
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// If included it will generate the error 'Your time_t is already 64-bit'
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cfg.header("time64.h");
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}
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cfg.header("arpa/inet.h");
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cfg.header("xlocale.h");
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cfg.header("utmp.h");
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} else if !windows {
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cfg.header("glob.h");
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cfg.header("ifaddrs.h");
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cfg.header("langinfo.h");
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if !openbsd && !freebsd && !dragonfly {
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cfg.header("sys/quota.h");
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}
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if !musl {
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cfg.header("sys/sysctl.h");
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}
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if !musl && !uclibc {
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if !netbsd && !openbsd && !uclibc {
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cfg.header("execinfo.h");
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cfg.header("xlocale.h");
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}
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if openbsd {
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cfg.header("utmp.h");
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} else {
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cfg.header("utmpx.h");
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}
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}
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}
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if apple {
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cfg.header("mach-o/dyld.h");
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cfg.header("mach/mach_time.h");
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cfg.header("malloc/malloc.h");
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cfg.header("util.h");
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cfg.header("sys/xattr.h");
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if target.starts_with("x86") {
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cfg.header("crt_externs.h");
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}
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}
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if bsdlike {
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cfg.header("sys/event.h");
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if freebsd {
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cfg.header("libutil.h");
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} else {
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cfg.header("util.h");
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}
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}
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if linux {
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cfg.header("mqueue.h");
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cfg.header("ucontext.h");
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cfg.header("sys/signalfd.h");
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if !uclibc {
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// optionally included in uclibc
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cfg.header("sys/xattr.h");
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}
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cfg.header("sys/ipc.h");
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cfg.header("sys/msg.h");
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cfg.header("sys/shm.h");
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cfg.header("sys/fsuid.h");
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cfg.header("pty.h");
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cfg.header("shadow.h");
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}
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if linux || android {
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cfg.header("malloc.h");
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cfg.header("net/ethernet.h");
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cfg.header("netpacket/packet.h");
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cfg.header("sched.h");
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cfg.header("sys/epoll.h");
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cfg.header("sys/eventfd.h");
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cfg.header("sys/prctl.h");
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cfg.header("sys/sendfile.h");
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cfg.header("sys/vfs.h");
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cfg.header("sys/syscall.h");
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if !uclibc {
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cfg.header("sys/sysinfo.h");
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}
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cfg.header("sys/reboot.h");
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if !musl {
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cfg.header("linux/netlink.h");
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cfg.header("linux/magic.h");
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cfg.header("linux/reboot.h");
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if !mips {
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cfg.header("linux/quota.h");
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}
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}
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}
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if freebsd {
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cfg.header("pthread_np.h");
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cfg.header("sched.h");
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cfg.header("ufs/ufs/quota.h");
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cfg.header("sys/jail.h");
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cfg.header("sys/ipc.h");
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cfg.header("sys/msg.h");
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cfg.header("sys/shm.h");
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}
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if netbsd {
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cfg.header("ufs/ufs/quota.h");
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cfg.header("ufs/ufs/quota1.h");
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cfg.header("sys/ioctl_compat.h");
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}
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if openbsd {
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cfg.header("ufs/ufs/quota.h");
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cfg.header("pthread_np.h");
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cfg.header("sys/syscall.h");
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}
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if dragonfly {
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cfg.header("ufs/ufs/quota.h");
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cfg.header("pthread_np.h");
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cfg.header("sys/ioctl_compat.h");
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}
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if linux || freebsd || dragonfly || netbsd || apple {
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if !uclibc {
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cfg.header("aio.h");
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}
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}
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cfg.type_name(move |ty, is_struct| {
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match ty {
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// Just pass all these through, no need for a "struct" prefix
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"FILE" |
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"fd_set" |
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"Dl_info" |
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"DIR" => ty.to_string(),
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// Fixup a few types on windows that don't actually exist.
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"time64_t" if windows => "__time64_t".to_string(),
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"ssize_t" if windows => "SSIZE_T".to_string(),
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// OSX calls this something else
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"sighandler_t" if bsdlike => "sig_t".to_string(),
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t if t.ends_with("_t") => t.to_string(),
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// Windows uppercase structs don't have `struct` in front, there's a
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// few special cases for windows, and then otherwise put `struct` in
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// front of everything.
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t if is_struct => {
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if windows && ty.chars().next().unwrap().is_uppercase() {
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t.to_string()
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} else if windows && t == "stat" {
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"struct __stat64".to_string()
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} else if windows && t == "utimbuf" {
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"struct __utimbuf64".to_string()
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} else {
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format!("struct {}", t)
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}
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}
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t => t.to_string(),
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}
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});
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let target2 = target.clone();
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cfg.field_name(move |struct_, field| {
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match field {
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"st_birthtime" if openbsd && struct_ == "stat" => "__st_birthtime".to_string(),
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"st_birthtime_nsec" if openbsd && struct_ == "stat" => "__st_birthtimensec".to_string(),
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// Our stat *_nsec fields normally don't actually exist but are part
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// of a timeval struct
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s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
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if target2.contains("apple") {
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s.replace("_nsec", "spec.tv_nsec")
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} else if target2.contains("android") {
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s.to_string()
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} else {
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s.replace("e_nsec", ".tv_nsec")
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}
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}
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"u64" if struct_ == "epoll_event" => "data.u64".to_string(),
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s => s.to_string(),
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}
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});
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cfg.skip_type(move |ty| {
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match ty {
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// sighandler_t is crazy across platforms
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"sighandler_t" => true,
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_ => false
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}
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});
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cfg.skip_struct(move |ty| {
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match ty {
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"sockaddr_nl" => musl,
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// On Linux, the type of `ut_tv` field of `struct utmpx`
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// can be an anonymous struct, so an extra struct,
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// which is absent in glibc, has to be defined.
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"__timeval" if linux => true,
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// The alignment of this is 4 on 64-bit OSX...
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"kevent" if apple && x86_64 => true,
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// This is actually a union, not a struct
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"sigval" => true,
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_ => false
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}
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});
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cfg.skip_signededness(move |c| {
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match c {
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"LARGE_INTEGER" |
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"mach_timebase_info_data_t" |
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"float" |
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"double" => true,
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// uuid_t is a struct, not an integer.
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"uuid_t" if dragonfly => true,
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n if n.starts_with("pthread") => true,
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// sem_t is a struct or pointer
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"sem_t" if openbsd || freebsd || dragonfly || rumprun => true,
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// windows-isms
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n if n.starts_with("P") => true,
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n if n.starts_with("H") => true,
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n if n.starts_with("LP") => true,
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_ => false,
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}
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});
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cfg.skip_const(move |name| {
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match name {
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// Apparently these don't exist in mingw headers?
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"MEM_RESET_UNDO" |
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"FILE_ATTRIBUTE_NO_SCRUB_DATA" |
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"FILE_ATTRIBUTE_INTEGRITY_STREAM" |
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"ERROR_NOTHING_TO_TERMINATE" if mingw => true,
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"SIG_IGN" => true, // sighandler_t weirdness
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// types on musl are defined a little differently
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n if musl && n.contains("__SIZEOF_PTHREAD") => true,
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// Skip constants not defined in MUSL but just passed down to the
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// kernel regardless
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"RLIMIT_NLIMITS" |
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"TCP_COOKIE_TRANSACTIONS" |
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"RLIMIT_RTTIME" |
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"MSG_COPY" if musl => true,
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// work around super old mips toolchain
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"SCHED_IDLE" | "SHM_NORESERVE" => mips,
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// weird signed extension or something like that?
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"MS_NOUSER" => true,
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"MS_RMT_MASK" => true, // updated in glibc 2.22 and musl 1.1.13
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// These OSX constants are flagged as deprecated
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"NOTE_EXIT_REPARENTED" |
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"NOTE_REAP" if apple => true,
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// The linux/quota.h header file which defines these can't be
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// included with sys/quota.h currently on MIPS, so we don't include
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// it and just ignore these constants
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"QFMT_VFS_OLD" |
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"QFMT_VFS_V0" if mips && linux => true,
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// These constants were removed in FreeBSD 11 (svn r273250) but will
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// still be accepted and ignored at runtime.
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"MAP_RENAME" |
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"MAP_NORESERVE" if freebsd => true,
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// These constants were removed in FreeBSD 11 (svn r262489),
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// and they've never had any legitimate use outside of the
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// base system anyway.
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"CTL_MAXID" |
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"KERN_MAXID" |
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"HW_MAXID" |
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"USER_MAXID" if freebsd => true,
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// These OSX constants are removed in Sierra.
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// https://developer.apple.com/library/content/releasenotes/General/APIDiffsMacOS10_12/Swift/Darwin.html
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"KERN_KDENABLE_BG_TRACE" if apple => true,
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"KERN_KDDISABLE_BG_TRACE" if apple => true,
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// These are either unimplemented or optionally built into uClibc
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"LC_CTYPE_MASK" | "LC_NUMERIC_MASK" | "LC_TIME_MASK" | "LC_COLLATE_MASK" | "LC_MONETARY_MASK" | "LC_MESSAGES_MASK" |
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"MADV_MERGEABLE" | "MADV_UNMERGEABLE" | "MADV_HWPOISON" | "IPV6_ADD_MEMBERSHIP" | "IPV6_DROP_MEMBERSHIP" | "IPV6_MULTICAST_LOOP" | "IPV6_V6ONLY" |
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"MAP_STACK" | "RTLD_DEEPBIND" | "SOL_IPV6" | "SOL_ICMPV6" if uclibc => true,
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_ => false,
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}
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});
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cfg.skip_fn(move |name| {
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// skip those that are manually verified
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match name {
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"execv" | // crazy stuff with const/mut
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"execve" |
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"execvp" |
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"execvpe" => true,
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"getrlimit" | "getrlimit64" | // non-int in 1st arg
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"setrlimit" | "setrlimit64" | // non-int in 1st arg
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"prlimit" | "prlimit64" | // non-int in 2nd arg
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"strerror_r" if linux => true, // actually xpg-something-or-other
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// int vs uint. Sorry musl, your prototype declarations are "correct" in the sense that
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// they match the interface defined by Linux verbatim, but they conflict with other
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// send*/recv* syscalls
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"sendmmsg" | "recvmmsg" if musl => true,
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// typed 2nd arg on linux and android
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"gettimeofday" if linux || android || freebsd || openbsd || dragonfly => true,
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// not declared in newer android toolchains
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"getdtablesize" if android => true,
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"dlerror" if android => true, // const-ness is added
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"dladdr" if musl => true, // const-ness only added recently
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// OSX has 'struct tm *const' which we can't actually represent in
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// Rust, but is close enough to *mut
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"timegm" if apple => true,
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// OSX's daemon is deprecated in 10.5 so we'll get a warning (which
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// we turn into an error) so just ignore it.
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"daemon" if apple => true,
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// Deprecated on OSX
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"sem_destroy" if apple => true,
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"sem_init" if apple => true,
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// These functions presumably exist on netbsd but don't look like
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// they're implemented on rumprun yet, just let them slide for now.
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// Some of them look like they have headers but then don't have
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// corresponding actual definitions either...
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"shm_open" |
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"shm_unlink" |
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"syscall" |
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"ptrace" |
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"sigaltstack" if rumprun => true,
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// There seems to be a small error in EGLIBC's eventfd.h header. The
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// [underlying system call][1] always takes its first `count`
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// argument as an `unsigned int`, but [EGLIBC's <sys/eventfd.h>
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// header][2] declares it to take an `int`. [GLIBC's header][3]
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// matches the kernel.
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//
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// EGLIBC is no longer actively developed, and Debian, the largest
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// distribution that had been using it, switched back to GLIBC in
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// April 2015. So effectively all Linux <sys/eventfd.h> headers will
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// be using `unsigned int` soon.
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//
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// [1]: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/fs/eventfd.c?id=refs/tags/v3.12.51#n397
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// [2]: http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/trusty/eglibc/trusty/view/head:/sysdeps/unix/sysv/linux/sys/eventfd.h
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// [3]: https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/sys/eventfd.h;h=6295f32e937e779e74318eb9d3bdbe76aef8a8f3;hb=4e42b5b8f89f0e288e68be7ad70f9525aebc2cff#l34
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"eventfd" if linux => true,
|
|
|
|
// The `uname` function in freebsd is now an inline wrapper that
|
|
// delegates to another, but the symbol still exists, so don't check
|
|
// the symbol.
|
|
"uname" if freebsd => true,
|
|
|
|
// aio_waitcomplete's return type changed between FreeBSD 10 and 11.
|
|
"aio_waitcomplete" if freebsd => true,
|
|
|
|
// lio_listio confuses the checker, probably because one of its
|
|
// arguments is an array
|
|
"lio_listio" if freebsd => true,
|
|
"lio_listio" if musl => true,
|
|
|
|
// Apparently the NDK doesn't have this defined on android, but
|
|
// it's in a header file?
|
|
"endpwent" if android => true,
|
|
|
|
|
|
// These are either unimplemented or optionally built into uClibc
|
|
// or "sysinfo", where it's defined but the structs in linux/sysinfo.h and sys/sysinfo.h
|
|
// clash so it can't be tested
|
|
"getxattr" | "lgetxattr" | "fgetxattr" | "setxattr" | "lsetxattr" | "fsetxattr" |
|
|
"listxattr" | "llistxattr" | "flistxattr" | "removexattr" | "lremovexattr" |
|
|
"fremovexattr" |
|
|
"backtrace" |
|
|
"sysinfo" | "newlocale" | "duplocale" | "freelocale" | "uselocale" |
|
|
"nl_langinfo_l" | "wcslen" | "wcstombs" if uclibc => true,
|
|
|
|
// Apparently res_init exists on Android, but isn't defined in a header:
|
|
// https://mail.gnome.org/archives/commits-list/2013-May/msg01329.html
|
|
"res_init" if android => true,
|
|
|
|
// On macOS and iOS, res_init is available, but requires linking with libresolv:
|
|
// http://blog.achernya.com/2013/03/os-x-has-silly-libsystem.html
|
|
// See discussion for skipping here:
|
|
// https://github.com/rust-lang/libc/pull/585#discussion_r114561460
|
|
"res_init" if apple => true,
|
|
|
|
_ => false,
|
|
}
|
|
});
|
|
|
|
cfg.skip_fn_ptrcheck(move |name| {
|
|
match name {
|
|
// dllimport weirdness?
|
|
_ if windows => true,
|
|
|
|
_ => false,
|
|
}
|
|
});
|
|
|
|
cfg.skip_field_type(move |struct_, field| {
|
|
// This is a weird union, don't check the type.
|
|
(struct_ == "ifaddrs" && field == "ifa_ifu") ||
|
|
// sighandler_t type is super weird
|
|
(struct_ == "sigaction" && field == "sa_sigaction") ||
|
|
// __timeval type is a patch which doesn't exist in glibc
|
|
(linux && struct_ == "utmpx" && field == "ut_tv") ||
|
|
// sigval is actually a union, but we pretend it's a struct
|
|
(struct_ == "sigevent" && field == "sigev_value") ||
|
|
// aio_buf is "volatile void*" and Rust doesn't understand volatile
|
|
(struct_ == "aiocb" && field == "aio_buf") ||
|
|
// stack_t.ss_sp's type changed from FreeBSD 10 to 11 in svn r294930
|
|
(freebsd && struct_ == "stack_t" && field == "ss_sp")
|
|
});
|
|
|
|
cfg.skip_field(move |struct_, field| {
|
|
// this is actually a union on linux, so we can't represent it well and
|
|
// just insert some padding.
|
|
(struct_ == "siginfo_t" && field == "_pad") ||
|
|
// musl names this __dummy1 but it's still there
|
|
(musl && struct_ == "glob_t" && field == "gl_flags") ||
|
|
// musl seems to define this as an *anonymous* bitfield
|
|
(musl && struct_ == "statvfs" && field == "__f_unused") ||
|
|
// sigev_notify_thread_id is actually part of a sigev_un union
|
|
(struct_ == "sigevent" && field == "sigev_notify_thread_id")
|
|
});
|
|
|
|
cfg.fn_cname(move |name, cname| {
|
|
if windows {
|
|
cname.unwrap_or(name).to_string()
|
|
} else {
|
|
name.to_string()
|
|
}
|
|
});
|
|
|
|
if env::var("SKIP_COMPILE").is_ok() {
|
|
cfg.generate_files("../src/lib.rs", "all.rs");
|
|
} else {
|
|
cfg.generate("../src/lib.rs", "all.rs");
|
|
}
|
|
}
|