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osx: link to dylib, windows: always return None

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This commit is contained in:
Jorge Aparicio 2016-09-17 19:54:29 -05:00
parent 9493c37455
commit 08c9ff730c
1 changed files with 18 additions and 1 deletions
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19
gcc_s/src/lib.rs
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@ -8,17 +8,34 @@ use libloading::Library;
static mut GCC_S: Option<Library> = None;
#[cfg(not(windows))]
fn gcc_s() -> &'static Library {
#[cfg(not(target_os = "macos"))]
const LIBGCC_S: &'static str = "libgcc_s.so.1";
#[cfg(target_os = "macos")]
const LIBGCC_S: &'static str = "libgcc_s.1.dylib";
unsafe {
static INIT: Once = ONCE_INIT;
INIT.call_once(|| {
GCC_S = Some(Library::new("libgcc_s.so.1").unwrap());
GCC_S = Some(Library::new(LIBGCC_S).unwrap());
});
GCC_S.as_ref().unwrap()
}
}
#[cfg(windows)]
macro_rules! declare {
($symbol:ident: fn($($i:ty),+) -> $o:ty) => {
pub fn $symbol() -> Option<unsafe extern fn($($i),+) -> $o> {
None
}
}
}
#[cfg(not(windows))]
macro_rules! declare {
($symbol:ident: fn($($i:ty),+) -> $o:ty) => {
pub fn $symbol() -> Option<unsafe extern fn($($i),+) -> $o> {