Merge branch 'embed-lld'

Zig now depends on LLVM 5.0.0.

For the latest version that supports LLVM 4.0.1, use
2a49c876be76dc98996a3251310728ad32b22363.

Unfortunately we had to embed LLD into Zig due to some
MACH-O related LLD bugs. One of them is already upstream
and another is awaiting feedback on the llvm-dev mailing
list.

You can use cmake option -DZIG_FORCE_EXTERNAL_LLD=ON to
still use external LLD if you want to live with the MACH-O
bugs or if your system LLD is patched.

Closes #273

3 files changed, 63 insertions, 5 deletions

diff --git a/std/c/darwin.zig b/std/c/darwin.zig
index 9d4961fe00..8ea491fce0 100644
--- a/std/c/darwin.zig
+++ b/std/c/darwin.zig
@@ -1,4 +1,34 @@
-pub extern "c" fn getrandom(buf_ptr: &u8, buf_len: usize) -> c_int;
-fn extern "c" __error() -> &c_int;
+extern "c" fn __error() -> &c_int;
+
+pub use @import("../os/darwin_errno.zig");
 
 pub const _errno = __error;
+
+/// Renamed to Stat to not conflict with the stat function.
+pub const Stat = extern struct {
+    dev: u32,
+    mode: u16,
+    nlink: u16,
+    ino: u64,
+    uid: u32,
+    gid: u32,
+    rdev: u64,
+
+    atim: timespec,
+    mtim: timespec,
+    ctim: timespec,
+
+    size: u64,
+    blocks: u64,
+    blksize: u32,
+    flags: u32,
+    gen: u32,
+    lspare: i32,
+    qspare: [2]u64,
+
+};
+
+pub const timespec = extern struct {
+    tv_sec: isize,
+    tv_nsec: isize,
+};
diff --git a/std/c/index.zig b/std/c/index.zig
index 091458d789..820324ff34 100644
--- a/std/c/index.zig
+++ b/std/c/index.zig
@@ -1,4 +1,3 @@
-pub use @import("../os/errno.zig");
 const builtin = @import("builtin");
 const Os = builtin.Os;
 
@@ -8,7 +7,34 @@ pub use switch(builtin.os) {
     Os.darwin, Os.macosx, Os.ios => @import("darwin.zig"),
     else => empty_import,
 };
+const empty_import = @import("../empty.zig");
 
 pub extern "c" fn abort() -> noreturn;
-
-const empty_import = @import("../empty.zig");
+pub extern "c" fn exit(code: c_int) -> noreturn;
+pub extern "c" fn isatty(fd: c_int) -> c_int;
+pub extern "c" fn close(fd: c_int) -> c_int;
+pub extern "c" fn fstat(fd: c_int, buf: &stat) -> c_int;
+pub extern "c" fn lseek(fd: c_int, offset: isize, whence: c_int) -> isize;
+pub extern "c" fn open(path: &const u8, oflag: c_int, ...) -> c_int;
+pub extern "c" fn raise(sig: c_int) -> c_int;
+pub extern "c" fn read(fd: c_int, buf: &c_void, nbyte: usize) -> isize;
+pub extern "c" fn stat(noalias path: &const u8, noalias buf: &Stat) -> c_int;
+pub extern "c" fn write(fd: c_int, buf: &const c_void, nbyte: usize) -> c_int;
+pub extern "c" fn mmap(addr: ?&c_void, len: usize, prot: c_int, flags: c_int,
+    fd: c_int, offset: isize) -> ?&c_void;
+pub extern "c" fn munmap(addr: &c_void, len: usize) -> c_int;
+pub extern "c" fn unlink(path: &const u8) -> c_int;
+pub extern "c" fn getcwd(buf: &u8, size: usize) -> ?&u8;
+pub extern "c" fn waitpid(pid: c_int, stat_loc: &c_int, options: c_int) -> c_int;
+pub extern "c" fn fork() -> c_int;
+pub extern "c" fn pipe(fds: &c_int) -> c_int;
+pub extern "c" fn mkdir(path: &const u8, mode: c_uint) -> c_int;
+pub extern "c" fn symlink(existing: &const u8, new: &const u8) -> c_int;
+pub extern "c" fn rename(old: &const u8, new: &const u8) -> c_int;
+pub extern "c" fn chdir(path: &const u8) -> c_int;
+pub extern "c" fn execve(path: &const u8, argv: &const ?&const u8,
+    envp: &const ?&const u8) -> c_int;
+pub extern "c" fn dup(fd: c_int) -> c_int;
+pub extern "c" fn dup2(old_fd: c_int, new_fd: c_int) -> c_int;
+pub extern "c" fn readlink(noalias path: &const u8, noalias buf: &u8, bufsize: usize) -> isize;
+pub extern "c" fn realpath(noalias file_name: &const u8, noalias resolved_name: &u8) -> ?&u8;
diff --git a/std/c/linux.zig b/std/c/linux.zig
index 2a18ce46bd..48ba90351b 100644
--- a/std/c/linux.zig
+++ b/std/c/linux.zig
@@ -1,3 +1,5 @@
+pub use @import("../os/linux_errno.zig");
+
 pub extern "c" fn getrandom(buf_ptr: &u8, buf_len: usize, flags: c_uint) -> c_int;
 extern "c" fn __errno_location() -> &c_int;
 pub const _errno = __errno_location;