mirror of
https://github.com/bminor/binutils-gdb.git
synced 2025-11-16 12:34:43 +00:00
9591d2b762
commit c8a8d3bb27
Author: Ian Lance Taylor <ian@airs.com>
AuthorDate: Thu Mar 13 02:46:09 1997 +0000
Commit: Ian Lance Taylor <ian@airs.com>
CommitDate: Thu Mar 13 02:46:09 1997 +0000
Wed Mar 12 21:44:19 1997 Eric Youngdale <eric@andante.jic.com>
* ld-elfvers/vers.exp, *: New tests for symbol versioning.
* config/default.exp: Set ar and strip.
added an unused vers8.c. There is
build_vers_lib_pic "vers8" vers1.c vers8 vers8.map "" vers8.ver vers1.dsym vers1.sym
The differences are:
1. Version scripts:
vers1.map:
VERS_1.1 {
local:
hide_old*;
hide_original*;
hide_new*;
};
VERS_1.2 {
} VERS_1.1;
VERS_2.0 {
show_bar1; show_bar2;
} VERS_1.2;
vers8.map:
VERSION {
VERS_1.1 {
local:
hide_old*;
hide_original*;
hide_new*;
};
VERS_1.2 {
} VERS_1.1;
VERS_2.0 {
show_bar1; show_bar2;
} VERS_1.2;
}
2. Symbol version dump:
vers1.ver:
Version definitions:
[1-4] 0x01 0x0c96425f vers1.so
[1-4] 0x00 0x0a7927b1 VERS_1.1
[1-4] 0x00 0x0a7927b2 VERS_1.2
VERS_1.1
[1-4] 0x00 0x0a7922b0 VERS_2.0
VERS_1.2
vers8.ver:
Version definitions:
[1-4] 0x01 0x0c96b25f vers8.so
[1-4] 0x00 0x0a7927b1 VERS_1.1
[1-4] 0x00 0x0a7927b2 VERS_1.2
VERS_1.1
[1-4] 0x00 0x0a7922b0 VERS_2.0
VERS_1.2
We can remove the unused vers8.c.
PR ld/33631
* testsuite/ld-elfvers/vers8.c: Removed.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
README for LD
This is the GNU linker. It is distributed with other "binary
utilities" which should be in ../binutils. See ../binutils/README for
more general notes, including where to send bug reports.
There are many features of the linker:
* The linker uses a Binary File Descriptor library (../bfd)
that it uses to read and write object files. This helps
insulate the linker itself from the format of object files.
* The linker supports a number of different object file
formats. It can even handle multiple formats at once:
Read two input formats and write a third.
* The linker can be configured for cross-linking.
* The linker supports a control language.
* There is a user manual (ld.texi), as well as the
beginnings of an internals manual (ldint.texi).
Installation
============
See ../binutils/README.
If you want to make a cross-linker, you may want to specify
a different search path of -lfoo libraries than the default.
You can do this by setting the LIB_PATH variable in ./Makefile
or using the --with-lib-path configure switch.
To build just the linker, make the target all-ld from the top level
directory (one directory above this one).
Porting to a new target
=======================
See the ldint.texi manual.
Reporting bugs etc
===========================
See ../binutils/README.
Known problems
==============
The Solaris linker normally exports all dynamic symbols from an
executable. The GNU linker does not do this by default. This is
because the GNU linker tries to present the same interface for all
similar targets (in this case, all native ELF targets). This does not
matter for normal programs, but it can make a difference for programs
which try to dlopen an executable, such as PERL or Tcl. You can make
the GNU linker export all dynamic symbols with the -E or
--export-dynamic command line option.
HP/UX 9.01 has a shell bug that causes the linker scripts to be
generated incorrectly. The symptom of this appears to be "fatal error
- scanner input buffer overflow" error messages. There are various
workarounds to this:
* Build and install bash, and build with "make SHELL=bash".
* Update to a version of HP/UX with a working shell (e.g., 9.05).
* Replace "(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc)" in
genscripts.sh with "sh ${srcdir}..." (no parens) and make sure the
emulparams script used exports any shell variables it sets.
Copyright (C) 2012-2025 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.