mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-24 10:35:12 +08:00
74 lines
2.6 KiB
Plaintext
74 lines
2.6 KiB
Plaintext
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.texinfo), as well as the
|
||
beginnings of an internals manual (ldint.texinfo).
|
||
|
||
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.texinfo 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) 2012-2015 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.
|