src/liblibc/libc-test/build.rs

   1 #![deny(warnings)]
   2
   3 extern crate ctest;
   4
   5 use std::env;
   6
   7 fn main() {
   8     let target = env::var("TARGET").unwrap();
   9     let x86_64 = target.contains("x86_64");
  10     let windows = target.contains("windows");
  11     let mingw = target.contains("windows-gnu");
  12     let linux = target.contains("unknown-linux");
  13     let android = target.contains("android");
  14     let apple = target.contains("apple");
  15     let musl = target.contains("musl");
  16     let freebsd = target.contains("freebsd");
  17     let dragonfly = target.contains("dragonfly");
  18     let mips = target.contains("mips");
  19     let netbsd = target.contains("netbsd");
  20     let openbsd = target.contains("openbsd");
  21     let rumprun = target.contains("rumprun");
  22     let bsdlike = freebsd || apple || netbsd || openbsd || dragonfly;
  23     let mut cfg = ctest::TestGenerator::new();
  24
  25     // Pull in extra goodies on linux/mingw
  26     if linux || android {
  27         cfg.define("_GNU_SOURCE", None);
  28     } else if windows {
  29         cfg.define("_WIN32_WINNT", Some("0x8000"));
  30     }
  31
  32     // Android doesn't actually have in_port_t but it's much easier if we
  33     // provide one for us to test against
  34     if android {
  35         cfg.define("in_port_t", Some("uint16_t"));
  36     }
  37
  38     cfg.header("errno.h")
  39        .header("fcntl.h")
  40        .header("limits.h")
  41        .header("locale.h")
  42        .header("stddef.h")
  43        .header("stdint.h")
  44        .header("stdio.h")
  45        .header("stdlib.h")
  46        .header("sys/stat.h")
  47        .header("sys/types.h")
  48        .header("time.h")
  49        .header("wchar.h");
  50
  51     if windows {
  52         cfg.header("winsock2.h"); // must be before windows.h
  53
  54         cfg.header("direct.h");
  55         cfg.header("io.h");
  56         cfg.header("sys/utime.h");
  57         cfg.header("windows.h");
  58         cfg.header("process.h");
  59         cfg.header("ws2ipdef.h");
  60
  61         if target.contains("gnu") {
  62             cfg.header("ws2tcpip.h");
  63         }
  64     } else {
  65         cfg.header("ctype.h");
  66         cfg.header("dirent.h");
  67         if openbsd {
  68             cfg.header("sys/socket.h");
  69         }
  70         cfg.header("net/if.h");
  71         cfg.header("netdb.h");
  72         cfg.header("netinet/in.h");
  73         cfg.header("netinet/ip.h");
  74         cfg.header("netinet/tcp.h");
  75         cfg.header("pthread.h");
  76         cfg.header("dlfcn.h");
  77         cfg.header("signal.h");
  78         cfg.header("string.h");
  79         cfg.header("sys/file.h");
  80         cfg.header("sys/ioctl.h");
  81         cfg.header("sys/mman.h");
  82         cfg.header("sys/resource.h");
  83         cfg.header("sys/socket.h");
  84         cfg.header("sys/time.h");
  85         cfg.header("sys/un.h");
  86         cfg.header("sys/wait.h");
  87         cfg.header("unistd.h");
  88         cfg.header("utime.h");
  89         cfg.header("pwd.h");
  90         cfg.header("grp.h");
  91         cfg.header("sys/utsname.h");
  92         cfg.header("sys/ptrace.h");
  93         cfg.header("sys/mount.h");
  94         cfg.header("sys/uio.h");
  95         cfg.header("sched.h");
  96         cfg.header("termios.h");
  97         cfg.header("poll.h");
  98     }
  99
 100     if android {
 101         cfg.header("arpa/inet.h");
 102         cfg.header("time64.h");
 103     } else if !windows {
 104         cfg.header("glob.h");
 105         cfg.header("ifaddrs.h");
 106         cfg.header("sys/statvfs.h");
 107
 108         if !openbsd && !freebsd && !dragonfly {
 109             cfg.header("sys/quota.h");
 110         }
 111
 112         if !musl {
 113             cfg.header("sys/sysctl.h");
 114
 115             if !netbsd && !openbsd {
 116                 cfg.header("execinfo.h");
 117             }
 118         }
 119     }
 120
 121     if apple {
 122         cfg.header("mach-o/dyld.h");
 123         cfg.header("mach/mach_time.h");
 124         cfg.header("malloc/malloc.h");
 125         cfg.header("util.h");
 126         if target.starts_with("x86") {
 127             cfg.header("crt_externs.h");
 128         }
 129     }
 130
 131     if bsdlike {
 132         cfg.header("sys/event.h");
 133
 134         if freebsd {
 135             cfg.header("libutil.h");
 136         } else {
 137             cfg.header("util.h");
 138         }
 139     }
 140
 141     if linux {
 142         cfg.header("mqueue.h");
 143         cfg.header("ucontext.h");
 144         cfg.header("sys/signalfd.h");
 145         cfg.header("sys/xattr.h");
 146         cfg.header("sys/ipc.h");
 147         cfg.header("sys/shm.h");
 148         cfg.header("pty.h");
 149     }
 150
 151     if linux || android {
 152         cfg.header("malloc.h");
 153         cfg.header("net/ethernet.h");
 154         cfg.header("netpacket/packet.h");
 155         cfg.header("sched.h");
 156         cfg.header("sys/epoll.h");
 157         cfg.header("sys/eventfd.h");
 158         cfg.header("sys/prctl.h");
 159         cfg.header("sys/sendfile.h");
 160         cfg.header("sys/vfs.h");
 161         cfg.header("sys/syscall.h");
 162         if !musl {
 163             cfg.header("linux/netlink.h");
 164             cfg.header("linux/magic.h");
 165
 166             if !mips {
 167                 cfg.header("linux/quota.h");
 168             }
 169         }
 170     }
 171
 172     if freebsd {
 173         cfg.header("pthread_np.h");
 174         cfg.header("sched.h");
 175         cfg.header("ufs/ufs/quota.h");
 176     }
 177
 178     if netbsd {
 179         cfg.header("ufs/ufs/quota.h");
 180         cfg.header("ufs/ufs/quota1.h");
 181         cfg.header("sys/ioctl_compat.h");
 182     }
 183
 184     if openbsd {
 185         cfg.header("ufs/ufs/quota.h");
 186         cfg.header("rpcsvc/rex.h");
 187         cfg.header("pthread_np.h");
 188         cfg.header("sys/syscall.h");
 189     }
 190
 191     if dragonfly {
 192         cfg.header("ufs/ufs/quota.h");
 193         cfg.header("pthread_np.h");
 194         cfg.header("sys/ioctl_compat.h");
 195     }
 196
 197     cfg.type_name(move |ty, is_struct| {
 198         match ty {
 199             // Just pass all these through, no need for a "struct" prefix
 200             "FILE" |
 201             "fd_set" |
 202             "Dl_info" |
 203             "DIR" => ty.to_string(),
 204
 205             // Fixup a few types on windows that don't actually exist.
 206             "time64_t" if windows => "__time64_t".to_string(),
 207             "ssize_t" if windows => "SSIZE_T".to_string(),
 208
 209             // OSX calls this something else
 210             "sighandler_t" if bsdlike => "sig_t".to_string(),
 211
 212             t if t.ends_with("_t") => t.to_string(),
 213
 214             // Windows uppercase structs don't have `struct` in front, there's a
 215             // few special cases for windows, and then otherwise put `struct` in
 216             // front of everything.
 217             t if is_struct => {
 218                 if windows && ty.chars().next().unwrap().is_uppercase() {
 219                     t.to_string()
 220                 } else if windows && t == "stat" {
 221                     "struct __stat64".to_string()
 222                 } else if windows && t == "utimbuf" {
 223                     "struct __utimbuf64".to_string()
 224                 } else {
 225                     format!("struct {}", t)
 226                 }
 227             }
 228
 229             t => t.to_string(),
 230         }
 231     });
 232
 233     let target2 = target.clone();
 234     cfg.field_name(move |struct_, field| {
 235         match field {
 236             "st_birthtime"      if openbsd && struct_ == "stat" => "__st_birthtime".to_string(),
 237             "st_birthtime_nsec" if openbsd && struct_ == "stat" => "__st_birthtimensec".to_string(),
 238             // Our stat *_nsec fields normally don't actually exist but are part
 239             // of a timeval struct
 240             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
 241                 if target2.contains("apple") {
 242                     s.replace("_nsec", "spec.tv_nsec")
 243                 } else if target2.contains("android") {
 244                     s.to_string()
 245                 } else {
 246                     s.replace("e_nsec", ".tv_nsec")
 247                 }
 248             }
 249             "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
 250             s => s.to_string(),
 251         }
 252     });
 253
 254     cfg.skip_type(move |ty| {
 255         match ty {
 256             // sighandler_t is crazy across platforms
 257             "sighandler_t" => true,
 258
 259             _ => false
 260         }
 261     });
 262
 263     cfg.skip_struct(move |ty| {
 264         match ty {
 265             "sockaddr_nl" => musl,
 266
 267             // The alignment of this is 4 on 64-bit OSX...
 268             "kevent" if apple && x86_64 => true,
 269
 270             _ => false
 271         }
 272     });
 273
 274     cfg.skip_signededness(move |c| {
 275         match c {
 276             "LARGE_INTEGER" |
 277             "mach_timebase_info_data_t" |
 278             "float" |
 279             "double" => true,
 280             // uuid_t is a struct, not an integer.
 281             "uuid_t" if dragonfly => true,
 282             n if n.starts_with("pthread") => true,
 283
 284             // windows-isms
 285             n if n.starts_with("P") => true,
 286             n if n.starts_with("H") => true,
 287             n if n.starts_with("LP") => true,
 288             _ => false,
 289         }
 290     });
 291
 292     cfg.skip_const(move |name| {
 293         match name {
 294             // Apparently these don't exist in mingw headers?
 295             "MEM_RESET_UNDO" |
 296             "FILE_ATTRIBUTE_NO_SCRUB_DATA" |
 297             "FILE_ATTRIBUTE_INTEGRITY_STREAM" |
 298             "ERROR_NOTHING_TO_TERMINATE" if mingw => true,
 299
 300             "SIG_IGN" => true, // sighandler_t weirdness
 301
 302             // types on musl are defined a little differently
 303             n if musl && n.contains("__SIZEOF_PTHREAD") => true,
 304
 305             // Skip constants not defined in MUSL but just passed down to the
 306             // kernel regardless
 307             "RLIMIT_NLIMITS" |
 308             "TCP_COOKIE_TRANSACTIONS" |
 309             "RLIMIT_RTTIME" if musl => true,
 310             // work around super old mips toolchain
 311             "SCHED_IDLE" | "SHM_NORESERVE" => mips,
 312
 313             // weird signed extension or something like that?
 314             "MS_NOUSER" => true,
 315             "MS_RMT_MASK" => true, // updated in glibc 2.22 and musl 1.1.13
 316
 317             // These OSX constants are flagged as deprecated
 318             "NOTE_EXIT_REPARENTED" |
 319             "NOTE_REAP" if apple => true,
 320
 321             // The linux/quota.h header file which defines these can't be
 322             // included with sys/quota.h currently on MIPS, so we don't include
 323             // it and just ignore these constants
 324             "QFMT_VFS_OLD" |
 325             "QFMT_VFS_V0" if mips && linux => true,
 326
 327             _ => false,
 328         }
 329     });
 330
 331     cfg.skip_fn(move |name| {
 332         // skip those that are manually verified
 333         match name {
 334             "execv" |       // crazy stuff with const/mut
 335             "execve" |
 336             "execvp" |
 337             "execvpe" => true,
 338
 339             "getrlimit" | "getrlimit64" |    // non-int in 1st arg
 340             "setrlimit" | "setrlimit64" |    // non-int in 1st arg
 341             "strerror_r" if linux => true,   // actually xpg-something-or-other
 342
 343             // typed 2nd arg on linux and android
 344             "gettimeofday" if linux || android || freebsd || openbsd || dragonfly => true,
 345
 346             // not declared in newer android toolchains
 347             "getdtablesize" if android => true,
 348
 349             "dlerror" if android => true, // const-ness is added
 350             "dladdr" if musl => true, // const-ness only added recently
 351
 352             // OSX has 'struct tm *const' which we can't actually represent in
 353             // Rust, but is close enough to *mut
 354             "timegm" if apple => true,
 355
 356             // OSX's daemon is deprecated in 10.5 so we'll get a warning (which
 357             // we turn into an error) so just ignore it.
 358             "daemon" if apple => true,
 359
 360             // These functions presumably exist on netbsd but don't look like
 361             // they're implemented on rumprun yet, just let them slide for now.
 362             // Some of them look like they have headers but then don't have
 363             // corresponding actual definitions either...
 364             "shm_open" |
 365             "shm_unlink" |
 366             "syscall" |
 367             "ptrace" |
 368             "sigaltstack" if rumprun => true,
 369
 370             // There seems to be a small error in EGLIBC's eventfd.h header. The
 371             // [underlying system call][1] always takes its first `count`
 372             // argument as an `unsigned int`, but [EGLIBC's <sys/eventfd.h>
 373             // header][2] declares it to take an `int`. [GLIBC's header][3]
 374             // matches the kernel.
 375             //
 376             // EGLIBC is no longer actively developed, and Debian, the largest
 377             // distribution that had been using it, switched back to GLIBC in
 378             // April 2015. So effectively all Linux <sys/eventfd.h> headers will
 379             // be using `unsigned int` soon.
 380             //
 381             // [1]: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/fs/eventfd.c?id=refs/tags/v3.12.51#n397
 382             // [2]: http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/trusty/eglibc/trusty/view/head:/sysdeps/unix/sysv/linux/sys/eventfd.h
 383             // [3]: https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/sys/eventfd.h;h=6295f32e937e779e74318eb9d3bdbe76aef8a8f3;hb=4e42b5b8f89f0e288e68be7ad70f9525aebc2cff#l34
 384             "eventfd" if linux => true,
 385
 386             // The `uname` funcion in freebsd is now an inline wrapper that
 387             // delegates to another, but the symbol still exists, so don't check
 388             // the symbol.
 389             "uname" if freebsd => true,
 390
 391             _ => false,
 392         }
 393     });
 394
 395     cfg.skip_fn_ptrcheck(move |name| {
 396         match name {
 397             // This used to be called bsd_signal in rev 18 of the android
 398             // platform and is now just called signal, the old `bsd_signal`
 399             // symbol, however, still remains, just gives a different function
 400             // pointer.
 401             "signal" if android => true,
 402
 403             // dllimport weirdness?
 404             _ if windows => true,
 405
 406             _ => false,
 407         }
 408     });
 409
 410     cfg.skip_field_type(move |struct_, field| {
 411         // This is a weird union, don't check the type.
 412         (struct_ == "ifaddrs" && field == "ifa_ifu") ||
 413         // sighandler_t type is super weird
 414         (struct_ == "sigaction" && field == "sa_sigaction")
 415     });
 416
 417     cfg.skip_field(move |struct_, field| {
 418         // this is actually a union on linux, so we can't represent it well and
 419         // just insert some padding.
 420         (struct_ == "siginfo_t" && field == "_pad") ||
 421         // musl names this __dummy1 but it's still there
 422         (musl && struct_ == "glob_t" && field == "gl_flags") ||
 423         // musl seems to define this as an *anonymous* bitfield
 424         (musl && struct_ == "statvfs" && field == "__f_unused")
 425     });
 426
 427     cfg.fn_cname(move |name, cname| {
 428         if windows {
 429             cname.unwrap_or(name).to_string()
 430         } else {
 431             name.to_string()
 432         }
 433     });
 434
 435     if env::var("SKIP_COMPILE").is_ok() {
 436         cfg.generate_files("../src/lib.rs", "all.rs");
 437     } else {
 438         cfg.generate("../src/lib.rs", "all.rs");
 439     }
 440 }