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Warn against installing into /usr/local

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2002-05-19  Andreas Jaeger  <aj@suse.de>

	* sysdeps/unix/sysv/linux/configure.in: Warn against an
	installation in /usr/local.
This commit is contained in:
Andreas Jaeger 2002-05-19 18:37:21 +00:00
parent bc9307fc94
commit 79ab8d898d
3 changed files with 35 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2002-05-19 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/configure.in: Warn against an
installation in /usr/local.
2002-05-16 Bruno Haible <bruno@clisp.org>
* sysdeps/unix/sysv/aix/bits/ioctl-types.h: Don't use multiline

13
FAQ.in
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@ -1028,6 +1028,19 @@ This version is needed because the fpos_t type and a few libio internals
have changed in glibc 2.2, and gcc 2.95.3 contains a corresponding patch.
?? Why shall glibc never get installed on GNU/Linux systems in
/usr/local?
{AJ} The GNU C compiler treats /usr/local/include and /usr/local/lib in a
special way, these directories will be searched before the system
directories. Since on GNU/Linux the system directories /usr/include and
/usr/lib contain a --- possibly different --- version of glibc and mixing
certain files from different glibc installations is not supported and will
break, you risk breaking your complete system. If you want to test a glibc
installation, use another directory as argument to --prefix. If you like to
install this glibc version as default version, overriding the existing one,
use --prefix=/usr and everything will go in the right places.
? Source and binary incompatibilities, and what to do about them
?? I expect GNU libc to be 100% source code compatible with

17
sysdeps/unix/sysv/linux/configure.in
View File

@ -185,6 +185,23 @@ if test "$linuxthreads_missing"; then
fi
fi
if test "$prefix" = "/usr/local" -o "$prefix" = "/usr/local/" -o "$prefix" = "NONE"; then
if test $enable_sanity = yes; then
echo "\
*** On GNU/Linux systems the GNU C Library should not be installed into
*** /usr/local since this might make your system totally unusable.
*** We strongly advise to use a different prefix. For details read the FAQ.
*** If you really mean to do this, run configure again using the extra
*** parameter \`--disable-sanity-checks'."
exit 1
else
echo "\
*** WARNING: Do you really want to install the GNU C Library into /usr/local?
*** This might make your system totally unusable, for details read the FAQ."
fi
fi
# One Linux we use ldconfig.
use_ldconfig=yes