| 1 |
21 |
khays |
This directory contains the -liberty library of free software.
|
| 2 |
|
|
It is a collection of subroutines used by various GNU programs.
|
| 3 |
|
|
Current members include:
|
| 4 |
|
|
|
| 5 |
|
|
getopt -- get options from command line
|
| 6 |
|
|
obstack -- stacks of arbitrarily-sized objects
|
| 7 |
|
|
strerror -- error message strings corresponding to errno
|
| 8 |
|
|
strtol -- string-to-long conversion
|
| 9 |
|
|
strtoul -- string-to-unsigned-long conversion
|
| 10 |
|
|
|
| 11 |
|
|
We expect many of the GNU subroutines that are floating around to
|
| 12 |
|
|
eventually arrive here.
|
| 13 |
|
|
|
| 14 |
|
|
The library must be configured from the top source directory. Don't
|
| 15 |
|
|
try to run configure in this directory. Follow the configuration
|
| 16 |
|
|
instructions in ../README.
|
| 17 |
|
|
|
| 18 |
|
|
Please report bugs to "gcc-bugs@gcc.gnu.org" and send fixes to
|
| 19 |
|
|
"gcc-patches@gcc.gnu.org". Thank you.
|
| 20 |
|
|
|
| 21 |
|
|
ADDING A NEW FILE
|
| 22 |
|
|
=================
|
| 23 |
|
|
|
| 24 |
|
|
There are two sets of files: Those that are "required" will be
|
| 25 |
|
|
included in the library for all configurations, while those
|
| 26 |
|
|
that are "optional" will be included in the library only if "needed."
|
| 27 |
|
|
|
| 28 |
|
|
To add a new required file, edit Makefile.in to add the source file
|
| 29 |
|
|
name to CFILES and the object file to REQUIRED_OFILES.
|
| 30 |
|
|
|
| 31 |
|
|
To add a new optional file, it must provide a single function, and the
|
| 32 |
|
|
name of the function must be the same as the name of the file.
|
| 33 |
|
|
|
| 34 |
|
|
* Add the source file name to CFILES in Makefile.in and the object
|
| 35 |
|
|
file to CONFIGURED_OFILES.
|
| 36 |
|
|
|
| 37 |
|
|
* Add the function to name to the funcs shell variable in
|
| 38 |
|
|
configure.ac.
|
| 39 |
|
|
|
| 40 |
|
|
* Add the function to the AC_CHECK_FUNCS lists just after the
|
| 41 |
|
|
setting of the funcs shell variable. These AC_CHECK_FUNCS calls
|
| 42 |
|
|
are never executed; they are there to make autoheader work
|
| 43 |
|
|
better.
|
| 44 |
|
|
|
| 45 |
|
|
* Consider the special cases of building libiberty; as of this
|
| 46 |
|
|
writing, the special cases are newlib and VxWorks. If a
|
| 47 |
|
|
particular special case provides the function, you do not need
|
| 48 |
|
|
to do anything. If it does not provide the function, add the
|
| 49 |
|
|
object file to LIBOBJS, and add the function name to the case
|
| 50 |
|
|
controlling whether to define HAVE_func.
|
| 51 |
|
|
|
| 52 |
|
|
Finally, in the build directory of libiberty, configure with
|
| 53 |
|
|
"--enable-maintainer-mode", run "make maint-deps" to update
|
| 54 |
|
|
Makefile.in, and run 'make stamp-functions' to regenerate
|
| 55 |
|
|
functions.texi.
|
| 56 |
|
|
|
| 57 |
|
|
The optional file you've added (e.g. getcwd.c) should compile and work
|
| 58 |
|
|
on all hosts where it is needed. It does not have to work or even
|
| 59 |
|
|
compile on hosts where it is not needed.
|
| 60 |
|
|
|
| 61 |
|
|
ADDING A NEW CONFIGURATION
|
| 62 |
|
|
==========================
|
| 63 |
|
|
|
| 64 |
|
|
On most hosts you should be able to use the scheme for automatically
|
| 65 |
|
|
figuring out which files are needed. In that case, you probably
|
| 66 |
|
|
don't need a special Makefile stub for that configuration.
|
| 67 |
|
|
|
| 68 |
|
|
If the fully automatic scheme doesn't work, you may be able to get
|
| 69 |
|
|
by with defining EXTRA_OFILES in your Makefile stub. This is
|
| 70 |
|
|
a list of object file names that should be treated as required
|
| 71 |
|
|
for this configuration - they will be included in libiberty.a,
|
| 72 |
|
|
regardless of whatever might be in the C library.
|
