mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-30 16:05:29 +08:00
66 lines
2.6 KiB
Plaintext
66 lines
2.6 KiB
Plaintext
This directory contains the -liberty library of free software.
|
|
It is a collection of subroutines used by various GNU programs.
|
|
Current members include:
|
|
|
|
getopt -- get options from command line
|
|
obstack -- stacks of arbitrarily-sized objects
|
|
strerror -- error message strings corresponding to errno
|
|
strtol -- string-to-long conversion
|
|
strtoul -- string-to-unsigned-long conversion
|
|
|
|
We expect many of the GNU subroutines that are floating around to
|
|
eventually arrive here.
|
|
|
|
The library must be configured from the top source directory. Don't
|
|
try to run configure in this directory. Follow the configuration
|
|
instructions in ../README.
|
|
|
|
Please report bugs and fixes to "bug-gnu-utils@prep.ai.mit.edu". Thank you.
|
|
|
|
ADDING A NEW FILE
|
|
=================
|
|
|
|
There are two sets of files: Those that are "required" will be
|
|
included in the library for all configurations, while those
|
|
that are "optional" will be included in the library only if "needed."
|
|
|
|
To add a new required file, edit Makefile to add the source file
|
|
name to CFILES and the object file to REQUIRED_OFILES.
|
|
|
|
To add a new optional file, it must provide a single function, and the
|
|
name of the function must be the same as the name of the file.
|
|
|
|
* Add the source file name to CFILES.
|
|
|
|
* Add the function to name to the funcs shell variable in
|
|
configure.in.
|
|
|
|
* Add the function to the AC_CHECK_FUNCS lists just after the
|
|
setting of the funcs shell variable. These AC_CHECK_FUNCS calls
|
|
are never executed; they are there to make autoheader work
|
|
better.
|
|
|
|
* Consider the special cases of building libiberty; as of this
|
|
writing, the special cases are newlib and VxWorks. If a
|
|
particular special case provides the function, you do not need
|
|
to do anything. If it does not provide the function, add the
|
|
object file to LIBOBJS, and add the function name to the case
|
|
controlling whether to define HAVE_func.
|
|
|
|
The optional file you've added (e.g. getcwd.c) should compile and work
|
|
on all hosts where it is needed. It does not have to work or even
|
|
compile on hosts where it is not needed.
|
|
|
|
ADDING A NEW CONFIGURATION
|
|
==========================
|
|
|
|
On most hosts you should be able to use the scheme for automatically
|
|
figuring out which files are needed. In that case, you probably
|
|
don't need a special Makefile stub for that configuration.
|
|
|
|
If the fully automatic scheme doesn't work, you may be able to get
|
|
by with defining EXTRA_OFILES in your Makefile stub. This is
|
|
a list of object file names that should be treated as required
|
|
for this configuration - they will be included in libiberty.a,
|
|
regardless of whatever might be in the C library.
|