This is a hopefully temporary reversion of new ld features for
embedded processors by Ulf Samuelsson, plus some followup patches.
Squashed together from the following:
Revert "lddigest 32-bit support and gcc-4 compile errors"
This reverts commit d7ee19be87110a8f5342cec6e323d83d01c641d1.
Revert "ld: Use correct types for crc64 calculations"
This reverts commit 9a534b9f8e3d0f3cdb5a20f19ff165693fbb84d2.
Revert "Re: DIGEST: testsuite"
This reverts commit c8e85484d8a0fe9f7b88e00a6b9ae63bcb53ba32.
Revert "Regen potfiles"
This reverts commit 4d98c966f8bf305ab25badd34cb295631873cf7c.
Revert "DIGEST: Makefile.*"
This reverts commit 78ef6ab03f56ce83a606d974bb8a9f34b5d6e0b7.
Revert "DIGEST: calculation"
This reverts commit 5243990191e683d5066d3dd622c76deaba0bf15c.
Revert "DIGEST: ldlang.*: add timestamp"
This reverts commit bd9466d4aa277a469a9d8b12f0a6e6fa51678e36.
Revert "DIGEST: ldmain.c"
This reverts commit c8f8653fa7eeb3dc0769ac23039eadb5c5f09dff.
Revert "DIGEST: ldgram.y"
This reverts commit d73c01be2669e9c5267fab669a269f95a32048c9.
Revert "DIGEST: ldlex.l"
This reverts commit 48b5163a9dd5759cc87171331bbd6e902c547b5a.
Revert "DIGEST: testsuite"
This reverts commit a4135d1a4886400ea29af2da782dd8dd40ccad23.
Revert "DIGEST: Documentation"
This reverts commit 3ec28966c3e4c63704212778f96c517cbf2e0090.
Revert "DIGEST: NEWS"
This reverts commit 099bf2927d446424e8585a60cf4ce63209999aa2.
Revert "DIGEST: LICENSING"
This reverts commit 5c8a0c6654fb55926985edf3b360b62d4f20691d.
This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
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) 2012-2023 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.
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