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authorRoland McGrath <roland@gnu.org>1996-05-29 04:48:04 +0000
committerRoland McGrath <roland@gnu.org>1996-05-29 04:48:04 +0000
commit0200214b288810fc261b0b65c32f7068fcfa9b40 (patch)
treea488a0a435ccf62b0870121b839b08de0d37a9b5 /FAQ
parent215dbbb1508bd6b86211112dd5ddaf9bd2290690 (diff)
downloadglibc-0200214b288810fc261b0b65c32f7068fcfa9b40.tar.gz
Tue May 28 04:38:10 1996 Ulrich Drepper <drepper@cygnus.com>
* limits.h: Change MB_LEN_MAX to 6. A 31-bit ISO 10646 character in UTF-8 encoding has that many bytes. * locale/langinfo.h: New element _NL_CTYPE_MB_CUR_MAX. * locale/categories.def: Add description of field _NL_CTYPE_MB_CUR_MAX. * locale/Makefile (routines): Add mb_cur_max. * locale/mb_cur_max.c: New file. This function gets called when the macro MB_CUR_MAX is used. * locale/C-ctype.c: Initialize new mb_cur_max field. * locale/localeinfo.h: Change magic value because of incompatible change. * locale/programs/ld-ctype.c: Determine value of mb_cur_max according to current character set and write it out with the rest. * stdlib/stdlib.h (MB_CUR_MAX): Not constant anymore. Get value according to currently used locale for catefory LC_CTYPE by calling the function __ctype_get_mb_cur_max. Tue May 28 03:27:46 1996 Ulrich Drepper <drepper@cygnus.com> * FAQ: Fix some typos. Tell that for Linux the kernel header files are necessary. * PROJECTS: New file. List of open jobs for glibc. * Makefile (distribute): Add PROJECTS. * crypt/GNUmakefile (headers): New variable. Mention crypt.h. * crypt/crypt.h: Header for crypt functions. * elf/elf.h: Add some new constants from recent Cygnus ELF header files. * login/getutid_r.c: Test for correct type. Don't depend on ut_type and ut_id unless _HAVE_UT_TYPE and _HAVE_UT_ID resp. are defined. Make really compliant with specification. * login/getutline_r.c, login/pututline_r.c: Don't depend on ut_type and ut_id unless _HAVE_UT_TYPE and _HAVE_UT_ID resp. are defined. Make really compliant with specification. * login/setutent_r.c: Don't depend on ut_type and ut_id unless _HAVE_UT_TYPE and _HAVE_UT_ID resp. are defined. * login/login.c, login/logout.c, login/logwtmp.c: Complete rewrite. Now based on getut*/setut* functions. * stdlib/strtol.c: Undo changes of Wed May 22 01:48:54 1996. This prevented using this file in other GNU packages. * sysdeps/gnu/utmpbits.h: Define _HAVE_UT_TYPE, _HAVE_UT_ID, and _HAVE_UT_TV because struct utmp has these members. * sysdeps/libm-i387/e_exp.S: Correct exp(+-Inf) case. * utmp.h: New file. Wrapper around login/utmp.h. * elf/dl-error.c (struct catch): New type. (catch): New static variable, struct catch *. (catch_env, signalled_errstring, signalled_objname): Variables removed. (_dl_signal_error): If CATCH is non-null, set its errstring and objname members and jump to CATCH->env. If it is null, call _dl_sysdep_fatal with a standard message. * elf/rtld.c (dl_main): Explode `doit' function into dl_main's body. No longer use _dl_catch_error.
Diffstat (limited to 'FAQ')
-rw-r--r--FAQ36
1 files changed, 23 insertions, 13 deletions
diff --git a/FAQ b/FAQ
index 9ebd95d7a5..f85b255bbc 100644
--- a/FAQ
+++ b/FAQ
@@ -102,8 +102,8 @@ from your favourite mirror of prep.ai.mit.edu.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
[Q5] ``Do I need a special linker or archiver?''
-[A5] {UD} If your native versions are not too buggy you can work with
-them. But GNU libc works best with GNU binutils.
+[A5] {UD} If your native versions are not too buggy you can probably
+work with them. But GNU libc works best with GNU binutils.
On systems where the native linker does not support weak symbols you
will not get a really ISO C compliant C library. Generally speaking
@@ -119,7 +119,7 @@ Older releases are known to have bugs that affect building the GNU C library.
[A6] {UD} Yes, there are some more :-).
-* lots of diskspace (for i386-linux this means, e.g., ~70MB)
+* lots of diskspace (for i386-linux this means, e.g., ~70MB).
You should avoid compiling on a NFS mounted device. This is very
slow.
@@ -130,6 +130,12 @@ Older releases are known to have bugs that affect building the GNU C library.
If you are interested in some more measurements let me know.
+* When compiling for Linux:
+
+ + the header files of the Linux kernel must be available in the
+ search path of the CPP as <linux/*.h> and <asm/*.h>.
+
+
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
[Q7] ``When I run `nm libc.so|grep " U "' on the produced library
I still find unresolved symbols? Can this be ok?''
@@ -138,7 +144,7 @@ Older releases are known to have bugs that affect building the GNU C library.
symbols:
* magic symbols automatically generated by the linker. Names are
- often like __start_* and __stop_*-
+ often like __start_* and __stop_*
* symbols resolved by using libgcc.a
(__udivdi3, __umoddi3, or similar)
@@ -161,14 +167,18 @@ and with cleanliness. With the introduction of a new version number these
errors now can be corrected. Here is a list of the known source code
incompatibilities:
-* _GNU_SOURCE: glibc does not automatically define _GNU_SOURCE. Thus, if a
- program depends on GNU extensions, it is necessary to compile it with C
- compiler option -D_GNU_SOURCE, or better, to put `#define _GNU_SOURCE' at
- the beginning of your source files, before any C library header files are
- included. This difference normally mainfests itself in the form of
- missing prototypes and/or data type definitions. Thus, if you get such
- errors, the first thing you should do is try defining _GNU_SOURCE and see
- if that makes the problem go away.
+* _GNU_SOURCE: glibc does not automatically define _GNU_SOURCE. Thus,
+ if a program depends on GNU extensions or some other non-standard
+ functionality, it is necessary to compile it with C compiler option
+ -D_GNU_SOURCE, or better, to put `#define _GNU_SOURCE' at the beginning
+ of your source files, before any C library header files are included.
+ This difference normally manifests itself in the form of missing
+ prototypes and/or data type definitions. Thus, if you get such errors,
+ the first thing you should do is try defining _GNU_SOURCE and see if
+ that makes the problem go away.
+
+ For more information consult the file `NOTES' part of the GNU C
+ library sources.
* reboot(): GNU libc sanitizes the interface of reboot() to be more
compatible with the interface used on other OSes. In particular,
@@ -209,7 +219,7 @@ Answers were given by:
{DMT} David Mosberger-Tang, <davidm@AZStarNet.com>
Amended by:
-{RM} Roland McGrath <roland@gnu.ai.mit.edu>
+{RM} Roland McGrath, <roland@gnu.ai.mit.edu>
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