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Invoke gcc with -nodefaultlibs

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This will hopefully bring us closer to #11937. We're still using gcc's idea of
"startup files", but this should prevent us from leaking in dependencies that we
don't quite want (libgcc for example once compiler-rt is what we use).
This commit is contained in:
Alex Crichton 2014-02-04 08:37:07 -08:00
parent 18477ac68a
commit 28fa81a954
3 changed files with 24 additions and 1 deletions
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11
src/librustc/back/link.rs
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@ -1084,6 +1084,17 @@ fn link_args(sess: Session,
args.push(metadata.as_str().unwrap().to_owned());
}
// We want to prevent the compiler from accidentally leaking in any system
// libraries, so we explicitly ask gcc to not link to any libraries by
// default. Note that this does not happen for windows because windows pulls
// in some large number of libraries and I couldn't quite figure out which
// subset we wanted.
//
// FIXME(#11937) we should invoke the system linker directly
if sess.targ_cfg.os != abi::OsWin32 {
args.push(~"-nodefaultlibs");
}
if sess.targ_cfg.os == abi::OsLinux {
// GNU-style linkers will use this to omit linking to libraries which
// don't actually fulfill any relocations, but only for libraries which