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1998-08-12 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/unix/sysv/linux/configure.in: Obey --with-headers, document it. * sysdeps/unix/sysv/linux/alpha/configure.in: New file, contains test for recent Linux 2.1.100+ headers.
119 lines
3.5 KiB
Plaintext
119 lines
3.5 KiB
Plaintext
# 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 $stdio = default && stdio=libio
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# Don't bother trying to generate any glue code to be compatible with the
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# existing system library, because we are the only system library.
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inhibit_glue=yes
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if test -n "$sysheaders"; then
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OLD_CFLAGS=$CFLAGS
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CFLAGS="$CFLAGS $SYSINCLUDES"
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fi
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echo $ac_n "checking installed Linux kernel header files""... $ac_c" 1>&6
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echo "configure:16: checking installed Linux kernel header files" >&5
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if eval "test \"`echo '$''{'libc_cv_linux2010'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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cat > conftest.$ac_ext <<EOF
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#line 21 "configure"
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#include "confdefs.h"
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#include <linux/version.h>
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int main() {
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#if LINUX_VERSION_CODE < (2 *65536+ 0 *256+ 10) /* 2.0.10 */
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eat flaming death
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#endif
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; return 0; }
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EOF
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if { (eval echo configure:30: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
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rm -rf conftest*
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libc_cv_linux2010='2.0.10 or later'
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else
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echo "configure: failed program was:" >&5
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cat conftest.$ac_ext >&5
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rm -rf conftest*
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libc_cv_linux2010='TOO OLD!'
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fi
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rm -f conftest*
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fi
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echo "$ac_t""$libc_cv_linux2010" 1>&6
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if test "$libc_cv_linux2010" != '2.0.10 or later'; then
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{ echo "configure: error: GNU libc requires kernel header files from
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Linux 2.0.10 or later to be installed before configuring.
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The kernel header files are found usually in /usr/include/asm and
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/usr/include/linux; make sure these directories use files from
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Linux 2.0.10 or later. This check uses <linux/version.h>, so
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make sure that file was built correctly when installing the kernel header
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files. To use kernel headers not from /usr/include/linux, use the
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configure option --with-headers." 1>&2; exit 1; }
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fi
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if test -n "$sysheaders"; then
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CFLAGS=$OLD_CFLAGS
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fi
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# The Linux filesystem standard prescribes where to place "essential"
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# files. I.e., when the installation prefix is "/usr" we have to place
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# shared library objects and the configuration files on the root partition
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# in /lib and /etc.
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if test "$prefix" = "/usr"; then
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libc_cv_slibdir="/lib"
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libc_cv_sysconfdir="/etc"
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libc_cv_rootsbindir="/sbin"
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fi
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# Under Linux the LinuxThreads and crypt add-on should be available.
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case $add_ons in
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# Both are available. Good.
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*linuxthreads*crypt* | *crypt*linuxthreads*)
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message=
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;;
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*linuxthreads*)
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message="\
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*** WARNING:
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*** Are you sure you do not want to use the \`crypt' add-on?"
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;;
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*crypt*)
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message="\
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*** WARNING:
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*** Are you sure you do not want to use the \`linuxthread' add-on?"
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;;
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*)
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message="\
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*** WARNING: Are you sure you do not want to use the \`linuxthreads'
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*** and \`crypt' add-ons?"
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;;
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esac
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if test "$message"; then
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if test $enable_sanity = yes; then
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echo "\
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*** You should not compile the GNU libc without the \`linuxthreads' and
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*** \`crypt' add-on. Not using them risks to be incompatible with the
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*** libraries of other systems. Consider getting the add-ons and restart
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*** the configuration.
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*** If you really mean to avoid those add-ons run configure again, now
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*** using the extra parameter \`--disable-sanity-checks'."
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exit 1
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else
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echo "$message"
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fi
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fi
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# Check whether `ldconfig' sources are available. This will go away as soon
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# as ldconfig is available in GNU libc.
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if test -f $srcdir/elf/ldconfig.c; then
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has_ldconfig=yes
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fi
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# We need some extensions to the `ldd' script.
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case "$machine" in
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i[3456]86* | m68* | sparc/sparc32)
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ldd_rewrite_script=../sysdeps/unix/sysv/linux/ldd-rewrite.sed
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;;
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*)
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;;
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esac
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