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189 lines
6.1 KiB
Plaintext
189 lines
6.1 KiB
Plaintext
sinclude(./aclocal.m4)dnl Autoconf lossage
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/unix/sysv/linux.
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# On Linux, the default is to use libio instead of stdio.
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test $stdio = default && stdio=libio
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# Don't bother trying to generate any glue code to be compatible with the
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# existing system library, because we are the only system library.
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inhibit_glue=yes
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define([LIBC_LINUX_VERSION],[2.0.10])dnl
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if test -n "$sysheaders"; then
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OLD_CPPFLAGS=$CPPFLAGS
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CPPFLAGS="$CPPFLAGS $SYSINCLUDES"
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fi
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define([libc_cv_linuxVER], [libc_cv_linux]patsubst(LIBC_LINUX_VERSION,[\.]))dnl
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AC_CACHE_CHECK(installed Linux kernel header files, libc_cv_linuxVER, [dnl
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AC_EGREP_CPP([eat flaming death], [#include <linux/version.h>
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#if !defined LINUX_VERSION_CODE || LINUX_VERSION_CODE < ]dnl
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patsubst(LIBC_LINUX_VERSION,[^\([^.]*\)\.\([^.]*\)\.\([^.]*\)$],dnl
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[ (\1 *65536+ \2 *256+ \3) /* \1.\2.\3 */])[
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eat flaming death
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#endif],
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libc_cv_linuxVER='TOO OLD!',
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libc_cv_linuxVER='LIBC_LINUX_VERSION or later')])
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if test "$libc_cv_linuxVER" != 'LIBC_LINUX_VERSION or later'; then
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AC_MSG_ERROR([GNU libc requires kernel header files from
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Linux LIBC_LINUX_VERSION or later to be installed before configuring.
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The kernel header files are found usually in /usr/include/asm and
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/usr/include/linux; make sure these directories use files from
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Linux LIBC_LINUX_VERSION or later. This check uses <linux/version.h>, so
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make sure that file was built correctly when installing the kernel header
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files. To use kernel headers not from /usr/include/linux, use the
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configure option --with-headers.])
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fi
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# If the user gave a minimal version number test whether the available
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# kernel headers are young enough. Additionally we have minimal
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# kernel versions for some architectures.
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case "$machine" in
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mips*)
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arch_minimum_kernel=2.2.15
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;;
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sh*)
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arch_minimum_kernel=2.3.99
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;;
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ia64*)
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arch_minimum_kernel=2.4.0
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;;
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*)
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arch_minimum_kernel=2.0.10
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;;
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esac
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if test -n "$minimum_kernel"; then
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changequote(,)
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user_version=$((`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 65536 + \2 \* 256 + \3/'`))
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arch_version=$((`echo "$arch_minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 65536 + \2 \* 256 + \3/'`))
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changequote([,])
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if test $user_version -lt $arch_version; then
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AC_MSG_WARN([minimum kernel version reset to $arch_minimum_kernel])
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minimum_kernel=$arch_minimum_kernel
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fi
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else
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if test $arch_minimum_kernel != '2.0.10'; then
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minimum_kernel=$arch_minimum_kernel
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fi
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fi
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if test -n "$minimum_kernel"; then
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AC_MSG_CHECKING(for kernel header at least $minimum_kernel)
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changequote(,)dnl
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decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/(\1 * 65536 + \2 * 256 + \3)/'`;
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changequote([,])dnl
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AC_EGREP_CPP([eat flaming death], [#include <linux/version.h>
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#if LINUX_VERSION_CODE < $decnum
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eat flaming death
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#endif], libc_minimum_kernel='too old!', libc_minimum_kernel=ok)
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AC_MSG_RESULT($libc_minimum_kernel)
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if test "$libc_minimum_kernel" = ok; then
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AC_DEFINE_UNQUOTED(__LINUX_KERNEL_VERSION, $decnum)
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else
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AC_MSG_ERROR([*** The available kernel headers are older than the requested
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*** compatible kernel version])
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fi
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fi
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if test -n "$sysheaders"; then
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CPPFLAGS=$OLD_CPPFLAGS
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fi
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# The Linux filesystem standard prescribes where to place "essential"
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# files. I.e., when the installation prefix is "/usr" we have to place
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# shared library objects and the configuration files on the root partition
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# in /lib and /etc.
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if test "$prefix" = "/usr" -o "$prefix" = "/usr/"; then
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# 64bit libraries on sparc go to /lib64 and not /lib
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if test "$machine" = "sparc/sparc64"; then
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libc_cv_slibdir="/lib64"
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if test "$libdir" = '${exec_prefix}/lib'; then
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libdir='${exec_prefix}/lib64';
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# Locale data can be shared between 32bit and 64bit libraries
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libc_cv_localedir='${exec_prefix}/lib/locale'
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fi
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else
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libc_cv_slibdir="/lib"
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fi
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# Allow the user to override the path with --sysconfdir
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if test $sysconfdir = '${prefix}/etc'; then
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libc_cv_sysconfdir=/etc
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else
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libc_cv_sysconfdir=$sysconfdir
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fi
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libc_cv_rootsbindir="/sbin"
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fi
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# Under Linux the LinuxThreads add-on should be available.
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case $add_ons in
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# It is available. Good.
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*linuxthreads*)
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message=
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;;
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*)
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message="\
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*** WARNING: Are you sure you do not want to use the \`linuxthreads'
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*** add-on?"
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;;
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esac
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if test "$message"; then
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if test $enable_sanity = yes; then
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echo "\
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*** You should not compile the GNU libc without the \`linuxthreads'
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*** add-on. Not using them risks being incompatible with the
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*** libraries of other systems. Consider getting the add-on and restarting
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*** the configuration.
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*** If you really mean to not use this add-on, run configure again
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*** using the extra parameter \`--disable-sanity-checks'."
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exit 1
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else
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echo "$message"
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fi
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fi
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# One Linux we use ldconfig.
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use_ldconfig=yes
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# We need some extensions to the `ldd' script.
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changequote(,)
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case "$machine" in
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i[3456]86* | m68*)
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ldd_rewrite_script=../sysdeps/unix/sysv/linux/ldd-rewrite.sed
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;;
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sparc*)
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ldd_rewrite_script=../sysdeps/unix/sysv/linux/sparc/ldd-rewrite.sed
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;;
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*)
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;;
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esac
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changequote([,])
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if test $host = $build; then
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# If $prefix/include/{net,scsi} are symlinks, make install will
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# clobber what they're linked to (probably a kernel tree).
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# test -L ought to work on all Linux boxes.
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if test "x$prefix" != xNONE; then
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ac_prefix=$prefix
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else
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ac_prefix=$ac_default_prefix
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fi
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AC_MSG_CHECKING([for symlinks in ${ac_prefix}/include])
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ac_message=
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if test -L ${ac_prefix}/include/net; then
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ac_message="$ac_message
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${ac_prefix}/include/net is a symlink"
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fi
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if test -L ${ac_prefix}/include/scsi; then
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ac_message="$ac_message
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${ac_prefix}/include/scsi is a symlink"
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fi
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if test -n "$ac_message"; then
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AC_MSG_ERROR([$ac_message
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\`make install' will destroy the target of the link(s).
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Delete the links and re-run configure, or better still, move the entire
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${ac_prefix}/include directory out of the way.])
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else
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AC_MSG_RESULT(ok)
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fi
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fi
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