Mercurial > hg > CbC > CbC_gcc

comparison libiberty/README @ 0:a06113de4d67

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children 77e2b8dfacca
comparison
equal deleted inserted replaced
-1:000000000000 0:a06113de4d67
1 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 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.
35
36 * Add the function to name to the funcs shell variable in
37 configure.ac.
38
39 * Add the function to the AC_CHECK_FUNCS lists just after the
40 setting of the funcs shell variable. These AC_CHECK_FUNCS calls
41 are never executed; they are there to make autoheader work
42 better.
43
44 * Consider the special cases of building libiberty; as of this
45 writing, the special cases are newlib and VxWorks. If a
46 particular special case provides the function, you do not need
47 to do anything. If it does not provide the function, add the
48 object file to LIBOBJS, and add the function name to the case
49 controlling whether to define HAVE_func.
50
51 The optional file you've added (e.g. getcwd.c) should compile and work
52 on all hosts where it is needed. It does not have to work or even
53 compile on hosts where it is not needed.
54
55 ADDING A NEW CONFIGURATION
56 ==========================
57
58 On most hosts you should be able to use the scheme for automatically
59 figuring out which files are needed. In that case, you probably
60 don't need a special Makefile stub for that configuration.
61
62 If the fully automatic scheme doesn't work, you may be able to get
63 by with defining EXTRA_OFILES in your Makefile stub. This is
64 a list of object file names that should be treated as required
65 for this configuration - they will be included in libiberty.a,
66 regardless of whatever might be in the C library.