glibc/sysdeps/gnu/configure.in

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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/gnu.
# The Filesystem Hierarchy Standard prescribes where to place "essential"
# files. I.e., when the installation prefix is "/usr" we have to place
# shared library objects and the configuration files on the root partition
# in /lib and /etc.
case "$prefix" in
/usr | /usr/)
# 64-bit libraries on bi-arch platforms go in /lib64 instead of /lib.
# Allow earlier configure scripts to handle libc_cv_slibdir, libdir,
# and libc_cv_localedir.
test -n "$libc_cv_slibdir" || \
case $machine in
sparc/sparc64 | x86_64* | powerpc/powerpc64 | s390/s390-64)
libc_cv_slibdir=/lib64
if test "$libdir" = '${exec_prefix}/lib'; then
libdir='${exec_prefix}/lib64';
# Locale data can be shared between 32bit and 64bit libraries
libc_cv_localedir='${exec_prefix}/lib/locale'
fi
;;
*)
libc_cv_slibdir=/lib
;;
esac
# Allow the user to override the path with --sysconfdir.
if test "$sysconfdir" = '${prefix}/etc'; then
libc_cv_sysconfdir=/etc
else
libc_cv_sysconfdir=$sysconfdir
fi
# Allow the user to override the path with --localstatedir.
if test "$localstatedir" = '${prefix}/var'; then
libc_cv_localstatedir=/var
else
libc_cv_localstatedir=$localstatedir
fi
libc_cv_rootsbindir=/sbin
;;
esac