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authorUlrich Drepper <drepper@redhat.com>1997-01-30 04:09:36 +0000
committerUlrich Drepper <drepper@redhat.com>1997-01-30 04:09:36 +0000
commit19361cb768c280e47f2ca69ed63e1d75f332e592 (patch)
tree785385b6029dfd47c9d2b6309b9eb6c5b3b4f59f /FAQ
parent56552e4257910954051f3ff02c0ee2609c7ca688 (diff)
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update from main archive 970129cvs/libc-970201cvs/libc-970131cvs/libc-970130
1997-01-30 03:24 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/elf/start.S (_start): Align stack pointer to double word boundary before pushing args for main. This way we don't get penalties for misaligned memory accesses. Reported by Edward Seidl <seidl@janed.com>. * Makefile: Correct *my* changes of Richards patch of 1997-01-28 10:51. Patch by HJ Lu. * misc/bsd-compat.c: Update copyright. * misc/efgcvt.c: Likewise. * misc/efgcvt_r.c: Likewise. * misc/error.c: Likewise. * misc/error.h: Likewise. * misc/fstab.c: Likewise. * misc/init-misc.c: Likewise. * misc/lsearch.c: Likewise. * misc/mntent.c: Likewise. * misc/qefgcvt.c: Likewise. * misc/qefgcvt_r.c: Likewise. * nss/databases.def: Likewise. * nss/db-Makefile: Likewise. * nss/ethers-lookup.c: Likewise. * nss/hosts-lookup.c: Likewise. * nss/netgrp-lookup.c: Likewise. * nss/nsswitch.h: Likewise. * nss/proto-lookup.c: Likewise. * nss/rpc-lookup.c: Likewise. * nss/service-lookup.c: Likewise. * nss/nss_db/db-netgrp.c: Likewise. * nss/nss_files/files-grp.c: Likewise. * nss/nss_files/files-hosts.c: Likewise. * nss/nss_files/files-network.c: Likewise. * nss/nss_files/files-proto.c: Likewise. * nss/nss_files/files-pwd.c: Likewise. * nss/nss_files/files-rpc.c: Likewise. * nss/nss_files/files-service.c: Likewise. * nss/nss_files/files-spwd.c: Likewise. * shadow/fgetspent.c: Likewise. * shadow/fgetspent_r.c: Likewise. * shadow/getspent.c: Likewise. * shadow/getspent_r.c: Likewise. * shadow/getspnam.c: Likewise. * shadow/getspnam_r.c: Likewise. * shadow/putspent.c: Likewise. * shadow/sgetspent.c: Likewise. * shadow/sgetspent_r.c: Likewise. * sysdeps/i386/init-first.c: Likewise. * sysdeps/unix/i386/sysdep.S: Likewise. * shadow/shadow.h: Don't use __USE_REENTRENT. All code must be prepared to be running in a multi-threaded environment. Change to __USE_MISC unless the function is defined in POSIX.1 (in this case also test for __USE_POSIX). * dirent/dirent.h: Likewise. * grp/grp.h: Likewise. * inet/aliases.h: Likewise. * libio/libio.h: Likewise. * libio/stdio.h: Likewise. * login/utmp.h: Likewise. * math/mathcalls.h: Likewise. * misc/mntent.h: Likewise. * pwd/pwd.h: Likewise. * resolv/netdb.h: Likewise. * stdlib/stdlib.h: Likewise. * string/string.h: Likewise. * sunrpc/rpc/netdb.h: Likewise. * sysdeps/generic/crypt.h: Likewise. * sysdeps/unix/sysv/linux/errnos.h: Likewise. * time/time.h: Likewise. 1997-01-30 00:27 Fila Kolodny <fila@ibi.com> * sunrpc/Makefile (install-others): Add rpcsvc/bootparam_prot.h only if not cross compiling. 1997-01-29 16:16 Fila Kolodny <fila@ibi.com> * sysdeps/posix/sigpause.c: Include <stddef.h> to get definition of NULL. * sysdeps/posix/sigwait.c: Likewise. 1997-01-28 23:42 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makeconfig ($(common-objpfx)config.make): Depend on $(..)config.make.in.
Diffstat (limited to 'FAQ')
-rw-r--r--FAQ25
1 files changed, 22 insertions, 3 deletions
diff --git a/FAQ b/FAQ
index 642dfee..2f2f0a9 100644
--- a/FAQ
+++ b/FAQ
@@ -74,6 +74,9 @@ please let me know.
[Q20] ``How can I compile gcc 2.7.2.1 from the gcc source code using
glibc 2.x?
+
+[Q21] ``On Linux I've got problems with the declarations in Linux
+ kernel headers.''
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[Q1] ``What systems does the GNU C Library run on?''
@@ -605,9 +608,25 @@ is very tricky to compile gcc 2.7.2.1 using glibc 2.x. You have to
build it manually or with one pass only. You also have to use the
specs file in this FAQ while compiling gcc.
-A pre-compiled binary version of gcc 2.7.2.1 linked with glibc 2.x for
-Linux/x86 is available in the same directory at the glibc 2.x source
-code ftp sites.
+
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+[Q21] ``On Linux I've got problems with the declarations in Linux
+ kernel headers.''
+
+[A21] {UD,AJ} On Linux, the use of kernel headers is reduced to a very
+minimum. Besides giving Linus the possibility to change the headers
+more freely it has another reason: user level programs now do not
+always use the same types like the kernel does.
+
+I.e., the libc abstracts the use of types. E.g., the sigset_t type is
+in the kernel 32 or 64 bits wide. In glibc it is 1024 bits wide, in
+preparation for future development. The reasons are obvious: we don't
+want to have a new major release when the Linux kernel gets these
+functionality. Consult the headers for more information about the changes.
+
+Therefore you shouldn't include Linux kernel header files directly if
+glibc has defined a replacement. Otherwise you might get undefined
+results because of type conflicts.
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