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|
sinclude(./aclocal.m4)dnl Autoconf lossage
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/unix/sysv/linux.
# On Linux, the default is to use libio instead of stdio.
test $stdio = default && stdio=libio
# Don't bother trying to generate any glue code to be compatible with the
# existing system library, because we are the only system library.
inhibit_glue=yes
define([LIBC_LINUX_VERSION],[2.0.10])dnl
define([libc_cv_linuxVER], [libc_cv_linux]patsubst(LIBC_LINUX_VERSION,[\.]))dnl
AC_CACHE_CHECK(installed Linux kernel header files, libc_cv_linuxVER, [dnl
AC_TRY_COMPILE([#include <linux/version.h>],
[#if LINUX_VERSION_CODE < ]dnl
patsubst(LIBC_LINUX_VERSION,[^\([^.]*\)\.\([^.]*\)\.\([^.]*\)$],dnl
[ (\1 *65536+ \2 *256+ \3) /* \1.\2.\3 */])[
eat flaming death
#endif],
libc_cv_linuxVER='LIBC_LINUX_VERSION or later',
libc_cv_linuxVER='TOO OLD!')])
if test "$libc_cv_linuxVER" != 'LIBC_LINUX_VERSION or later'; then
AC_MSG_ERROR([GNU libc requires kernel header files from
Linux LIBC_LINUX_VERSION or later to be installed before configuring.
The kernel header files are found usually in /usr/include/asm and
/usr/include/linux; make sure these directories use files from
Linux LIBC_LINUX_VERSION or later. This check uses <linux/version.h>, so
make sure that file was built correctly when installing the kernel header
files.])
fi
# The Linux filesystem 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.
if test "$prefix" = "/usr"; then
libc_cv_slibdir="/lib"
libc_cv_sysconfdir="/etc"
libc_cv_rootsbindir="/sbin"
fi
# Under Linux the LinuxThreads and crypt add-on should be available.
case $add_ons in
# Both are available. Good.
*linuxthreads*crypt* | *crypt*linuxthreads*)
message=
;;
*linuxthreads*)
message="\
*** WARNING:
*** Are you sure you do not want to use the \`crypt' add-on?"
;;
*crypt*)
message="\
*** WARNING:
*** Are you sure you do not want to use the \`linuxthread' add-on?"
;;
*)
message="\
*** WARNING: Are you sure you do not want to use the \`linuxthreads'
*** and \`crypt' add-ons?"
;;
esac
if test "$message"; then
if test $enable_sanity = yes; then
echo "\
*** You should not compile the GNU libc without the \`linuxthreads' and
*** \`crypt' add-on. Not using them risks to be incompatible with the
*** libraries of other systems. Consider getting the add-ons and restart
*** the configuration.
*** If you really mean to avoid those add-ons run configure again, now
*** using the extra parameter \`--disable-sanity-checks'."
exit 1
else
echo "$message"
fi
fi
# Check whether `ldconfig' sources are available. This will go away as soon
# as ldconfig is available in GNU libc.
if test -f $srcdir/elf/ldconfig.c; then
has_ldconfig=yes
fi
# Generate stdio_lim.h
default_fopen_max="`${CC-gcc} -E $srcdir/sysdeps/unix/sysv/linux/mk-stdiolim.c | grep DEFAULT_FOPEN_MAX | cut -f2 -d':'`"
default_filename_max="`${CC-gcc} -E $srcdir/sysdeps/unix/sysv/linux/mk-stdiolim.c | grep DEFAULT_FILENAME_MAX | cut -f2 -d':'`"
# We double check if "default_fopen_max" and "default_filename_max" are
# ok or not.
if test "x$default_fopen_max" != "xOPEN_MAX" \
-a "x$default_filename_max" != "xPATH_MAX"
then
sed -e "s/DEFAULT_FOPEN_MAX/$default_fopen_max/" \
-e "s/DEFAULT_FILENAME_MAX/$default_filename_max/" \
$srcdir/sysdeps/unix/sysv/linux/stdio_lim.h.in > stdio_lim.h.new
if test -r stdio_lim.h.new && cmp -s stdio_lim.h.new stdio_lim.h
then
echo stdio_lim.h unchanged
rm -f stdio_lim.h.new
else
mv -f stdio_lim.h.new stdio_lim.h
fi
else
# We remove the old one if we cannot generate the new one during
# configure.
rm -f stdio_lim.h
fi
|
