36 lines
1.6 KiB
Diff
36 lines
1.6 KiB
Diff
Description: Set DT_SONAME when building dylibs
|
|
In Rust, library filenames include a version-specific hash to help
|
|
the run-time linker find the correct version. Unlike in C/C++, the
|
|
compiler looks for all libraries matching a glob that ignores the
|
|
hash and reads embedded metadata to work out versions, etc.
|
|
.
|
|
The upshot is that there is no need for the usual "libfoo.so ->
|
|
libfoo-1.2.3.so" symlink common with C/C++ when building with Rust,
|
|
and no need to communicate an alternate filename to use at run-time
|
|
vs compile time. If linking to a Rust dylib from C/C++ however, a
|
|
"libfoo.so -> libfoo-$hash.so" symlink may well be useful and in
|
|
this case DT_SONAME=libfoo-$hash.so would be required. More
|
|
mundanely, various tools (eg: dpkg-shlibdeps) complain if they don't
|
|
find DT_SONAME on shared libraries in public directories.
|
|
.
|
|
This patch passes -Wl,-soname=$outfile when building dylibs (and
|
|
using a GNU linker).
|
|
Author: Angus Lees <gus@debian.org>
|
|
Forwarded: no
|
|
|
|
--- a/src/librustc_trans/back/link.rs
|
|
+++ b/src/librustc_trans/back/link.rs
|
|
@@ -1017,6 +1017,12 @@
|
|
cmd.args(&rpath::get_rpath_flags(&mut rpath_config));
|
|
}
|
|
|
|
+ if (crate_type == config::CrateTypeDylib || crate_type == config::CrateTypeCdylib) && t.options.linker_is_gnu {
|
|
+ let filename = String::from(out_filename.file_name().unwrap().to_str().unwrap());
|
|
+ let soname = [String::from("-Wl,-soname=") + &filename];
|
|
+ cmd.args(&soname);
|
|
+ }
|
|
+
|
|
// Finally add all the linker arguments provided on the command line along
|
|
// with any #[link_args] attributes found inside the crate
|
|
if let Some(ref args) = sess.opts.cg.link_args {
|