bjoernager/rust
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Add a configure to disable libstd version injection

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We'll use this when building snapshots so we can upgrade freely, but all
compilers will inject a version by default.
This commit is contained in:
Alex Crichton 2014-01-13 17:29:50 -08:00
parent 7bebdbd968
commit 7a37294acc
5 changed files with 23 additions and 5 deletions
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19
src/librustc/front/std_inject.rs
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@ -21,6 +21,9 @@ use syntax::fold;
use syntax::opt_vec;
use syntax::util::small_vector::SmallVector;
// NOTE: upgrade to 0.10-pre after the next snapshot
pub static VERSION: &'static str = "0.9";
pub fn maybe_inject_libstd_ref(sess: Session, crate: ast::Crate)
-> ast::Crate {
if use_std(&crate) {
@ -53,11 +56,21 @@ struct StandardLibraryInjector {
sess: Session,
}
pub fn with_version(crate: &str) -> Option<(@str, ast::StrStyle)> {
match option_env!("CFG_DISABLE_INJECT_STD_VERSION") {
Some("1") => None,
_ => {
Some((format!("{}\\#{}", crate, VERSION).to_managed(),
ast::CookedStr))
}
}
}
impl fold::Folder for StandardLibraryInjector {
fn fold_crate(&mut self, crate: ast::Crate) -> ast::Crate {
let mut vis = ~[ast::ViewItem {
node: ast::ViewItemExternMod(self.sess.ident_of("std"),
None,
with_version("std"),
ast::DUMMY_NODE_ID),
attrs: ~[],
vis: ast::Private,
@ -67,7 +80,7 @@ impl fold::Folder for StandardLibraryInjector {
if use_uv(&crate) && !self.sess.building_library.get() {
vis.push(ast::ViewItem {
node: ast::ViewItemExternMod(self.sess.ident_of("green"),
None,
with_version("green"),
ast::DUMMY_NODE_ID),
attrs: ~[],
vis: ast::Private,
@ -75,7 +88,7 @@ impl fold::Folder for StandardLibraryInjector {
});
vis.push(ast::ViewItem {
node: ast::ViewItemExternMod(self.sess.ident_of("rustuv"),
None,
with_version("rustuv"),
ast::DUMMY_NODE_ID),
attrs: ~[],
vis: ast::Private,