# Local configure fragment for sysdeps/unix/sysv/linux. # On Linux, the default is to use libio instead of stdio. test $stdio = default && stdio=libio # Don't bother trying to generate any glue code to be compatible with the # existing system library, because we are the only system library. inhibit_glue=yes if test -n "$sysheaders"; then OLD_CPPFLAGS=$CPPFLAGS CPPFLAGS="$CPPFLAGS $SYSINCLUDES" fi echo $ac_n "checking installed Linux kernel header files""... $ac_c" 1>&6 echo "configure:16: checking installed Linux kernel header files" >&5 if eval "test \"`echo '$''{'libc_cv_linux2010'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext < #if !defined LINUX_VERSION_CODE || LINUX_VERSION_CODE < (2 *65536+ 0 *256+ 10) /* 2.0.10 */ eat flaming death #endif EOF if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | egrep "eat flaming death" >/dev/null 2>&1; then rm -rf conftest* libc_cv_linux2010='TOO OLD!' else rm -rf conftest* libc_cv_linux2010='2.0.10 or later' fi rm -f conftest* fi echo "$ac_t""$libc_cv_linux2010" 1>&6 if test "$libc_cv_linux2010" != '2.0.10 or later'; then { echo "configure: error: GNU libc requires kernel header files from Linux 2.0.10 or later to be installed before configuring. The kernel header files are found usually in /usr/include/asm and /usr/include/linux; make sure these directories use files from Linux 2.0.10 or later. This check uses , so make sure that file was built correctly when installing the kernel header files. To use kernel headers not from /usr/include/linux, use the configure option --with-headers." 1>&2; exit 1; } fi # If the user gave a minimal version number test whether the available # kernel headers are young enough. Additionally we have minimal # kernel versions for some architectures. case "$machine" in sh*) arch_minimum_kernel=2.3.99 ;; ia64*) arch_minimum_kernel=2.4.0 ;; *) arch_minimum_kernel=2.0.10 ;; esac if test -n "$minimum_kernel"; then user_version=$((`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 65536 + \2 \* 256 + \3/'`)) arch_version=$((`echo "$arch_minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 65536 + \2 \* 256 + \3/'`)) if test $user_version -lt $arch_version; then echo "configure: warning: minimum kernel version reset to $arch_minimum_kernel" 1>&2 minimum_kernel=$arch_minimum_kernel fi else if test $arch_minimum_kernel != '2.0.10'; then minimum_kernel=$arch_minimum_kernel fi fi if test -n "$minimum_kernel"; then echo $ac_n "checking for kernel header at least $minimum_kernel""... $ac_c" 1>&6 echo "configure:83: checking for kernel header at least $minimum_kernel" >&5 decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/(\1 * 65536 + \2 * 256 + \3)/'`; cat > conftest.$ac_ext < #if LINUX_VERSION_CODE < $decnum eat flaming death #endif EOF if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | egrep "eat flaming death" >/dev/null 2>&1; then rm -rf conftest* libc_minimum_kernel='too old!' else rm -rf conftest* libc_minimum_kernel=ok fi rm -f conftest* echo "$ac_t""$libc_minimum_kernel" 1>&6 if test "$libc_minimum_kernel" = ok; then cat >> confdefs.h <&2; exit 1; } fi fi if test -n "$sysheaders"; then CPPFLAGS=$OLD_CPPFLAGS 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 "$prefix" = "/usr" -o "$prefix" = "/usr/"; then # 64bit libraries on sparc go to /lib64 and not /lib if test "$machine" = "sparc/sparc64"; then libc_cv_slibdir="/lib64" if test "$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 else libc_cv_slibdir="/lib" fi libc_cv_sysconfdir="/etc" libc_cv_rootsbindir="/sbin" fi # Under Linux the LinuxThreads add-on should be available. case $add_ons in # It is available. Good. *linuxthreads*) message= ;; *) message="\ *** WARNING: Are you sure you do not want to use the \`linuxthreads' *** add-on?" ;; esac if test "$message"; then if test $enable_sanity = yes; then echo "\ *** You should not compile the GNU libc without the \`linuxthreads' *** add-on. Not using them risks being incompatible with the *** libraries of other systems. Consider getting the add-on and restarting *** the configuration. *** If you really mean to not use this add-on, run configure again *** using the extra parameter \`--disable-sanity-checks'." exit 1 else echo "$message" fi fi # One Linux we use ldconfig. use_ldconfig=yes # We need some extensions to the `ldd' script. case "$machine" in i[3456]86* | m68*) ldd_rewrite_script=../sysdeps/unix/sysv/linux/ldd-rewrite.sed ;; sparc*) ldd_rewrite_script=../sysdeps/unix/sysv/linux/sparc/ldd-rewrite.sed ;; *) ;; esac if test $host = $build; then # If $prefix/include/{net,scsi} are symlinks, make install will # clobber what they're linked to (probably a kernel tree). # test -L ought to work on all Linux boxes. if test "x$prefix" != xNONE; then ac_prefix=$prefix else ac_prefix=$ac_default_prefix fi echo $ac_n "checking for symlinks in ${ac_prefix}/include""... $ac_c" 1>&6 echo "configure:193: checking for symlinks in ${ac_prefix}/include" >&5 ac_message= if test -L ${ac_prefix}/include/net; then ac_message="$ac_message ${ac_prefix}/include/net is a symlink" fi if test -L ${ac_prefix}/include/scsi; then ac_message="$ac_message ${ac_prefix}/include/scsi is a symlink" fi if test -n "$ac_message"; then { echo "configure: error: $ac_message \`make install' will destroy the target of the link(s). Delete the links and re-run configure, or better still, move the entire ${ac_prefix}/include directory out of the way." 1>&2; exit 1; } else echo "$ac_t""ok" 1>&6 fi fi