From d9933b77f977c42231754bbd0175dbbb945a0f96 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Sun, 22 Oct 2017 19:45:46 -0700
Subject: [PATCH] Compile an empty library on wasm32 non-Emscripten
In preparation for eventually having a non-Emscripten based wasm32 target, this
commit makes `libc` the crate an empty library on wasm32 targets that are not
with `target_os = "emscripten"`. This may eventually get filled out over time,
but for now it's all empty!
---
src/lib.rs | 329 +++++++++++++++++++++++++++--------------------------
1 file changed, 168 insertions(+), 161 deletions(-)
diff --git a/src/lib.rs b/src/lib.rs
index 366ccff1..9f8cac2c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -100,176 +100,183 @@ extern crate std as core;
#[macro_use] mod macros;
mod dox;
-// Use repr(u8) as LLVM expects `void*` to be the same as `i8*` to help enable
-// more optimization opportunities around it recognizing things like
-// malloc/free.
-#[repr(u8)]
-pub enum c_void {
- // Two dummy variants so the #[repr] attribute can be used.
- #[doc(hidden)]
- __variant1,
- #[doc(hidden)]
- __variant2,
-}
+cfg_if! {
+ if #[cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))] {
+ // empty ...
+ } else {
-pub type int8_t = i8;
-pub type int16_t = i16;
-pub type int32_t = i32;
-pub type int64_t = i64;
-pub type uint8_t = u8;
-pub type uint16_t = u16;
-pub type uint32_t = u32;
-pub type uint64_t = u64;
+ // Use repr(u8) as LLVM expects `void*` to be the same as `i8*` to help enable
+ // more optimization opportunities around it recognizing things like
+ // malloc/free.
+ #[repr(u8)]
+ pub enum c_void {
+ // Two dummy variants so the #[repr] attribute can be used.
+ #[doc(hidden)]
+ __variant1,
+ #[doc(hidden)]
+ __variant2,
+ }
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_float = f32;
-pub type c_double = f64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
-pub type intmax_t = i64;
-pub type uintmax_t = u64;
+ pub type int8_t = i8;
+ pub type int16_t = i16;
+ pub type int32_t = i32;
+ pub type int64_t = i64;
+ pub type uint8_t = u8;
+ pub type uint16_t = u16;
+ pub type uint32_t = u32;
+ pub type uint64_t = u64;
-pub type size_t = usize;
-pub type ptrdiff_t = isize;
-pub type intptr_t = isize;
-pub type uintptr_t = usize;
-pub type ssize_t = isize;
+ pub type c_schar = i8;
+ pub type c_uchar = u8;
+ pub type c_short = i16;
+ pub type c_ushort = u16;
+ pub type c_int = i32;
+ pub type c_uint = u32;
+ pub type c_float = f32;
+ pub type c_double = f64;
+ pub type c_longlong = i64;
+ pub type c_ulonglong = u64;
+ pub type intmax_t = i64;
+ pub type uintmax_t = u64;
-pub enum FILE {}
-pub enum fpos_t {} // TODO: fill this out with a struct
+ pub type size_t = usize;
+ pub type ptrdiff_t = isize;
+ pub type intptr_t = isize;
+ pub type uintptr_t = usize;
+ pub type ssize_t = isize;
-extern {
- pub fn isalnum(c: c_int) -> c_int;
- pub fn isalpha(c: c_int) -> c_int;
- pub fn iscntrl(c: c_int) -> c_int;
- pub fn isdigit(c: c_int) -> c_int;
- pub fn isgraph(c: c_int) -> c_int;
- pub fn islower(c: c_int) -> c_int;
- pub fn isprint(c: c_int) -> c_int;
- pub fn ispunct(c: c_int) -> c_int;
- pub fn isspace(c: c_int) -> c_int;
- pub fn isupper(c: c_int) -> c_int;
- pub fn isxdigit(c: c_int) -> c_int;
- pub fn tolower(c: c_int) -> c_int;
- pub fn toupper(c: c_int) -> c_int;
+ pub enum FILE {}
+ pub enum fpos_t {} // TODO: fill this out with a struct
- #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
- link_name = "fopen$UNIX2003")]
- pub fn fopen(filename: *const c_char,
- mode: *const c_char) -> *mut FILE;
- #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
- link_name = "freopen$UNIX2003")]
- pub fn freopen(filename: *const c_char, mode: *const c_char,
- file: *mut FILE) -> *mut FILE;
- pub fn fflush(file: *mut FILE) -> c_int;
- pub fn fclose(file: *mut FILE) -> c_int;
- pub fn remove(filename: *const c_char) -> c_int;
- pub fn rename(oldname: *const c_char, newname: *const c_char) -> c_int;
- pub fn tmpfile() -> *mut FILE;
- pub fn setvbuf(stream: *mut FILE,
- buffer: *mut c_char,
- mode: c_int,
- size: size_t) -> c_int;
- pub fn setbuf(stream: *mut FILE, buf: *mut c_char);
- pub fn getchar() -> c_int;
- pub fn putchar(c: c_int) -> c_int;
- pub fn fgetc(stream: *mut FILE) -> c_int;
- pub fn fgets(buf: *mut c_char, n: c_int, stream: *mut FILE) -> *mut c_char;
- pub fn fputc(c: c_int, stream: *mut FILE) -> c_int;
- #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
- link_name = "fputs$UNIX2003")]
- pub fn fputs(s: *const c_char, stream: *mut FILE)-> c_int;
- pub fn puts(s: *const c_char) -> c_int;
- pub fn ungetc(c: c_int, stream: *mut FILE) -> c_int;
- pub fn fread(ptr: *mut c_void,
- size: size_t,
- nobj: size_t,
- stream: *mut FILE)
- -> size_t;
- #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
- link_name = "fwrite$UNIX2003")]
- pub fn fwrite(ptr: *const c_void,
- size: size_t,
- nobj: size_t,
- stream: *mut FILE)
- -> size_t;
- pub fn fseek(stream: *mut FILE, offset: c_long, whence: c_int) -> c_int;
- pub fn ftell(stream: *mut FILE) -> c_long;
- pub fn rewind(stream: *mut FILE);
- #[cfg_attr(target_os = "netbsd", link_name = "__fgetpos50")]
- pub fn fgetpos(stream: *mut FILE, ptr: *mut fpos_t) -> c_int;
- #[cfg_attr(target_os = "netbsd", link_name = "__fsetpos50")]
- pub fn fsetpos(stream: *mut FILE, ptr: *const fpos_t) -> c_int;
- pub fn feof(stream: *mut FILE) -> c_int;
- pub fn ferror(stream: *mut FILE) -> c_int;
- pub fn perror(s: *const c_char);
- pub fn atoi(s: *const c_char) -> c_int;
- #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
- link_name = "strtod$UNIX2003")]
- pub fn strtod(s: *const c_char, endp: *mut *mut c_char) -> c_double;
- pub fn strtol(s: *const c_char,
- endp: *mut *mut c_char, base: c_int) -> c_long;
- pub fn strtoul(s: *const c_char, endp: *mut *mut c_char,
- base: c_int) -> c_ulong;
- pub fn calloc(nobj: size_t, size: size_t) -> *mut c_void;
- pub fn malloc(size: size_t) -> *mut c_void;
- pub fn realloc(p: *mut c_void, size: size_t) -> *mut c_void;
- pub fn free(p: *mut c_void);
- pub fn abort() -> !;
- pub fn exit(status: c_int) -> !;
- pub fn _exit(status: c_int) -> !;
- pub fn atexit(cb: extern fn()) -> c_int;
- #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
- link_name = "system$UNIX2003")]
- pub fn system(s: *const c_char) -> c_int;
- pub fn getenv(s: *const c_char) -> *mut c_char;
+ extern {
+ pub fn isalnum(c: c_int) -> c_int;
+ pub fn isalpha(c: c_int) -> c_int;
+ pub fn iscntrl(c: c_int) -> c_int;
+ pub fn isdigit(c: c_int) -> c_int;
+ pub fn isgraph(c: c_int) -> c_int;
+ pub fn islower(c: c_int) -> c_int;
+ pub fn isprint(c: c_int) -> c_int;
+ pub fn ispunct(c: c_int) -> c_int;
+ pub fn isspace(c: c_int) -> c_int;
+ pub fn isupper(c: c_int) -> c_int;
+ pub fn isxdigit(c: c_int) -> c_int;
+ pub fn tolower(c: c_int) -> c_int;
+ pub fn toupper(c: c_int) -> c_int;
- pub fn strcpy(dst: *mut c_char, src: *const c_char) -> *mut c_char;
- pub fn strncpy(dst: *mut c_char, src: *const c_char, n: size_t)
- -> *mut c_char;
- pub fn strcat(s: *mut c_char, ct: *const c_char) -> *mut c_char;
- pub fn strncat(s: *mut c_char, ct: *const c_char, n: size_t) -> *mut c_char;
- pub fn strcmp(cs: *const c_char, ct: *const c_char) -> c_int;
- pub fn strncmp(cs: *const c_char, ct: *const c_char, n: size_t) -> c_int;
- pub fn strcoll(cs: *const c_char, ct: *const c_char) -> c_int;
- pub fn strchr(cs: *const c_char, c: c_int) -> *mut c_char;
- pub fn strrchr(cs: *const c_char, c: c_int) -> *mut c_char;
- pub fn strspn(cs: *const c_char, ct: *const c_char) -> size_t;
- pub fn strcspn(cs: *const c_char, ct: *const c_char) -> size_t;
- pub fn strdup(cs: *const c_char) -> *mut c_char;
- pub fn strpbrk(cs: *const c_char, ct: *const c_char) -> *mut c_char;
- pub fn strstr(cs: *const c_char, ct: *const c_char) -> *mut c_char;
- pub fn strlen(cs: *const c_char) -> size_t;
- pub fn strnlen(cs: *const c_char, maxlen: size_t) -> size_t;
- #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
- link_name = "strerror$UNIX2003")]
- pub fn strerror(n: c_int) -> *mut c_char;
- pub fn strtok(s: *mut c_char, t: *const c_char) -> *mut c_char;
- pub fn strxfrm(s: *mut c_char, ct: *const c_char, n: size_t) -> size_t;
- pub fn wcslen(buf: *const wchar_t) -> size_t;
- pub fn wcstombs(dest: *mut c_char, src: *const wchar_t, n: size_t) -> ::size_t;
+ #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
+ link_name = "fopen$UNIX2003")]
+ pub fn fopen(filename: *const c_char,
+ mode: *const c_char) -> *mut FILE;
+ #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
+ link_name = "freopen$UNIX2003")]
+ pub fn freopen(filename: *const c_char, mode: *const c_char,
+ file: *mut FILE) -> *mut FILE;
+ pub fn fflush(file: *mut FILE) -> c_int;
+ pub fn fclose(file: *mut FILE) -> c_int;
+ pub fn remove(filename: *const c_char) -> c_int;
+ pub fn rename(oldname: *const c_char, newname: *const c_char) -> c_int;
+ pub fn tmpfile() -> *mut FILE;
+ pub fn setvbuf(stream: *mut FILE,
+ buffer: *mut c_char,
+ mode: c_int,
+ size: size_t) -> c_int;
+ pub fn setbuf(stream: *mut FILE, buf: *mut c_char);
+ pub fn getchar() -> c_int;
+ pub fn putchar(c: c_int) -> c_int;
+ pub fn fgetc(stream: *mut FILE) -> c_int;
+ pub fn fgets(buf: *mut c_char, n: c_int, stream: *mut FILE) -> *mut c_char;
+ pub fn fputc(c: c_int, stream: *mut FILE) -> c_int;
+ #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
+ link_name = "fputs$UNIX2003")]
+ pub fn fputs(s: *const c_char, stream: *mut FILE)-> c_int;
+ pub fn puts(s: *const c_char) -> c_int;
+ pub fn ungetc(c: c_int, stream: *mut FILE) -> c_int;
+ pub fn fread(ptr: *mut c_void,
+ size: size_t,
+ nobj: size_t,
+ stream: *mut FILE)
+ -> size_t;
+ #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
+ link_name = "fwrite$UNIX2003")]
+ pub fn fwrite(ptr: *const c_void,
+ size: size_t,
+ nobj: size_t,
+ stream: *mut FILE)
+ -> size_t;
+ pub fn fseek(stream: *mut FILE, offset: c_long, whence: c_int) -> c_int;
+ pub fn ftell(stream: *mut FILE) -> c_long;
+ pub fn rewind(stream: *mut FILE);
+ #[cfg_attr(target_os = "netbsd", link_name = "__fgetpos50")]
+ pub fn fgetpos(stream: *mut FILE, ptr: *mut fpos_t) -> c_int;
+ #[cfg_attr(target_os = "netbsd", link_name = "__fsetpos50")]
+ pub fn fsetpos(stream: *mut FILE, ptr: *const fpos_t) -> c_int;
+ pub fn feof(stream: *mut FILE) -> c_int;
+ pub fn ferror(stream: *mut FILE) -> c_int;
+ pub fn perror(s: *const c_char);
+ pub fn atoi(s: *const c_char) -> c_int;
+ #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
+ link_name = "strtod$UNIX2003")]
+ pub fn strtod(s: *const c_char, endp: *mut *mut c_char) -> c_double;
+ pub fn strtol(s: *const c_char,
+ endp: *mut *mut c_char, base: c_int) -> c_long;
+ pub fn strtoul(s: *const c_char, endp: *mut *mut c_char,
+ base: c_int) -> c_ulong;
+ pub fn calloc(nobj: size_t, size: size_t) -> *mut c_void;
+ pub fn malloc(size: size_t) -> *mut c_void;
+ pub fn realloc(p: *mut c_void, size: size_t) -> *mut c_void;
+ pub fn free(p: *mut c_void);
+ pub fn abort() -> !;
+ pub fn exit(status: c_int) -> !;
+ pub fn _exit(status: c_int) -> !;
+ pub fn atexit(cb: extern fn()) -> c_int;
+ #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
+ link_name = "system$UNIX2003")]
+ pub fn system(s: *const c_char) -> c_int;
+ pub fn getenv(s: *const c_char) -> *mut c_char;
- pub fn memchr(cx: *const c_void, c: c_int, n: size_t) -> *mut c_void;
- pub fn memcmp(cx: *const c_void, ct: *const c_void, n: size_t) -> c_int;
- pub fn memcpy(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
- pub fn memmove(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
- pub fn memset(dest: *mut c_void, c: c_int, n: size_t) -> *mut c_void;
-}
+ pub fn strcpy(dst: *mut c_char, src: *const c_char) -> *mut c_char;
+ pub fn strncpy(dst: *mut c_char, src: *const c_char, n: size_t)
+ -> *mut c_char;
+ pub fn strcat(s: *mut c_char, ct: *const c_char) -> *mut c_char;
+ pub fn strncat(s: *mut c_char, ct: *const c_char, n: size_t) -> *mut c_char;
+ pub fn strcmp(cs: *const c_char, ct: *const c_char) -> c_int;
+ pub fn strncmp(cs: *const c_char, ct: *const c_char, n: size_t) -> c_int;
+ pub fn strcoll(cs: *const c_char, ct: *const c_char) -> c_int;
+ pub fn strchr(cs: *const c_char, c: c_int) -> *mut c_char;
+ pub fn strrchr(cs: *const c_char, c: c_int) -> *mut c_char;
+ pub fn strspn(cs: *const c_char, ct: *const c_char) -> size_t;
+ pub fn strcspn(cs: *const c_char, ct: *const c_char) -> size_t;
+ pub fn strdup(cs: *const c_char) -> *mut c_char;
+ pub fn strpbrk(cs: *const c_char, ct: *const c_char) -> *mut c_char;
+ pub fn strstr(cs: *const c_char, ct: *const c_char) -> *mut c_char;
+ pub fn strlen(cs: *const c_char) -> size_t;
+ pub fn strnlen(cs: *const c_char, maxlen: size_t) -> size_t;
+ #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
+ link_name = "strerror$UNIX2003")]
+ pub fn strerror(n: c_int) -> *mut c_char;
+ pub fn strtok(s: *mut c_char, t: *const c_char) -> *mut c_char;
+ pub fn strxfrm(s: *mut c_char, ct: *const c_char, n: size_t) -> size_t;
+ pub fn wcslen(buf: *const wchar_t) -> size_t;
+ pub fn wcstombs(dest: *mut c_char, src: *const wchar_t, n: size_t) -> ::size_t;
+
+ pub fn memchr(cx: *const c_void, c: c_int, n: size_t) -> *mut c_void;
+ pub fn memcmp(cx: *const c_void, ct: *const c_void, n: size_t) -> c_int;
+ pub fn memcpy(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
+ pub fn memmove(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
+ pub fn memset(dest: *mut c_void, c: c_int, n: size_t) -> *mut c_void;
+ }
-// These are all inline functions on android, so they end up just being entirely
-// missing on that platform.
-#[cfg(not(target_os = "android"))]
-extern {
- pub fn abs(i: c_int) -> c_int;
- pub fn atof(s: *const c_char) -> c_double;
- pub fn labs(i: c_long) -> c_long;
- pub fn rand() -> c_int;
- pub fn srand(seed: c_uint);
+ // These are all inline functions on android, so they end up just being entirely
+ // missing on that platform.
+ #[cfg(not(target_os = "android"))]
+ extern {
+ pub fn abs(i: c_int) -> c_int;
+ pub fn atof(s: *const c_char) -> c_double;
+ pub fn labs(i: c_long) -> c_long;
+ pub fn rand() -> c_int;
+ pub fn srand(seed: c_uint);
+ }
+ }
}
cfg_if! {
--
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