diff options
Diffstat (limited to 'ld')
| -rw-r--r-- | ld/ChangeLog | 7 | ||||
| -rw-r--r-- | ld/ld.texinfo | 9 | ||||
| -rw-r--r-- | ld/ldgram.y | 6 | ||||
| -rw-r--r-- | ld/ldlang.c | 19 |
4 files changed, 38 insertions, 3 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index 7ce98c8..c4f9443 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,10 @@ +2001-12-18 Jakub Jelinek <jakub@redhat.com> + + * ldgram.y (vers_node): Support anonymous version tags. + * ldlang.c (lang_register_vers_node): Ensure anonymous version + tag is not defined together with non-anonymous versions. + * ld.texinfo: Document it. + 2001-12-18 Nick Clifton <nickc@cambridge.redhat.com> * po/tr.po: New file: Turkish translation. diff --git a/ld/ld.texinfo b/ld/ld.texinfo index 1967ef5..5594446 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -3685,6 +3685,15 @@ they might suggest to the person reading them. The @samp{2.0} version could just as well have appeared in between @samp{1.1} and @samp{1.2}. However, this would be a confusing way to write a version script. +Node name can be omited, provided it is the only version node +in the version script. Such version script doesn't assign any versions to +symbols, only selects which symbols will be globally visible out and which +won't. + +@smallexample +@{ global: foo; bar; local: *; @} +#end smallexample + When you link an application against a shared library that has versioned symbols, the application itself knows which version of each symbol it requires, and it also knows which version nodes it needs from each diff --git a/ld/ldgram.y b/ld/ldgram.y index c57ad15..f1924a0 100644 --- a/ld/ldgram.y +++ b/ld/ldgram.y @@ -1061,7 +1061,11 @@ vers_nodes: ; vers_node: - VERS_TAG '{' vers_tag '}' ';' + '{' vers_tag '}' ';' + { + lang_register_vers_node (NULL, $2, NULL); + } + | VERS_TAG '{' vers_tag '}' ';' { lang_register_vers_node ($1, $3, NULL); } diff --git a/ld/ldlang.c b/ld/ldlang.c index 9994cf8..afce0fa 100644 --- a/ld/ldlang.c +++ b/ld/ldlang.c @@ -5031,6 +5031,16 @@ lang_register_vers_node (name, version, deps) struct bfd_elf_version_tree *t, **pp; struct bfd_elf_version_expr *e1; + if (name == NULL) + name = ""; + + if ((name[0] == '\0' && lang_elf_version_info != NULL) + || (lang_elf_version_info && lang_elf_version_info->name[0] == '\0')) + { + einfo (_("%X%P: anonymous version tag cannot be combined with other version tags\n")); + return; + } + /* Make sure this node has a unique name. */ for (t = lang_elf_version_info; t != NULL; t = t->next) if (strcmp (t->name, name) == 0) @@ -5067,8 +5077,13 @@ lang_register_vers_node (name, version, deps) version->deps = deps; version->name = name; - ++version_index; - version->vernum = version_index; + if (name[0] != '\0') + { + ++version_index; + version->vernum = version_index; + } + else + version->vernum = 0; for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next) ; |