125 lines
5.0 KiB
Plaintext
125 lines
5.0 KiB
Plaintext
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
|
|
# Local configure fragment for sysdeps/unix/sysv/linux.
|
|
|
|
define([LIBC_LINUX_VERSION],[3.2.0])dnl
|
|
if test -n "$sysheaders"; then
|
|
OLD_CPPFLAGS=$CPPFLAGS
|
|
CPPFLAGS="$CPPFLAGS $SYSINCLUDES"
|
|
fi
|
|
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_PREPROC_IFELSE([AC_LANG_PROGRAM([[#include <linux/version.h>
|
|
#if !defined LINUX_VERSION_CODE || LINUX_VERSION_CODE < ]dnl
|
|
patsubst(LIBC_LINUX_VERSION,[^\([^.]*\)\.\([^.]*\)\.\([^.]*\)$],dnl
|
|
[ (\1 *65536+ \2 *256+ \3) /* \1.\2.\3 */])[
|
|
# error kernel headers missing or too old
|
|
#endif]], [[]])],
|
|
[libc_cv_linuxVER='LIBC_LINUX_VERSION or later'],
|
|
[libc_cv_linuxVER='missing or too old!'])])
|
|
if test "$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. To use kernel headers not from /usr/include/linux, use the
|
|
configure option --with-headers.])
|
|
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. If a previous configure fragment
|
|
# set arch_minimum_kernel already, let that override our defaults here.
|
|
# Note that we presume such a fragment has set libc_cv_gcc_unwind_find_fde
|
|
# if appropriate too.
|
|
test -n "$arch_minimum_kernel" || arch_minimum_kernel=3.2.0
|
|
if test -n "$minimum_kernel"; then
|
|
changequote(,)
|
|
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/'`))
|
|
changequote([,])
|
|
if test $user_version -lt $arch_version; then
|
|
AC_MSG_WARN([minimum kernel version reset to $arch_minimum_kernel])
|
|
minimum_kernel=$arch_minimum_kernel
|
|
fi
|
|
else
|
|
minimum_kernel=$arch_minimum_kernel
|
|
fi
|
|
|
|
AC_MSG_CHECKING(for kernel header at least $minimum_kernel)
|
|
changequote(,)dnl
|
|
decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/(\1 * 65536 + \2 * 256 + \3)/'`;
|
|
abinumstr=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1.\2.\3/'`;
|
|
abinum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1,\2,\3/'`;
|
|
changequote([,])dnl
|
|
AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[#include <linux/version.h>
|
|
#if LINUX_VERSION_CODE < $decnum
|
|
# error kernel headers too old
|
|
#endif]], [[]])], [libc_minimum_kernel=ok], [libc_minimum_kernel='too old!'])
|
|
AC_MSG_RESULT($libc_minimum_kernel)
|
|
if test "$libc_minimum_kernel" = ok; then
|
|
AC_DEFINE_UNQUOTED(__LINUX_KERNEL_VERSION, $decnum)
|
|
AC_DEFINE_UNQUOTED(__LINUX_KERNEL_VERSION_STR, "$abinumstr")
|
|
AC_DEFINE_UNQUOTED(__ABI_TAG_VERSION, $abinum)
|
|
else
|
|
AC_MSG_ERROR([*** The available kernel headers are older than the requested
|
|
*** compatible kernel version])
|
|
fi
|
|
|
|
if test -n "$sysheaders"; then
|
|
CPPFLAGS=$OLD_CPPFLAGS
|
|
fi
|
|
|
|
if test "$prefix" = "/usr/local" -o "$prefix" = "/usr/local/" -o "$prefix" = "NONE"; then
|
|
if test $enable_sanity = yes; then
|
|
echo "\
|
|
*** On GNU/Linux systems the GNU C Library should not be installed into
|
|
*** /usr/local since this might make your system totally unusable.
|
|
*** We strongly advise to use a different prefix. For details read the FAQ.
|
|
*** If you really mean to do this, run configure again using the extra
|
|
*** parameter \`--disable-sanity-checks'."
|
|
exit 1
|
|
else
|
|
echo "\
|
|
*** WARNING: Do you really want to install the GNU C Library into /usr/local?
|
|
*** This might make your system totally unusable, for details read the FAQ."
|
|
fi
|
|
fi
|
|
|
|
|
|
# One Linux we use ldconfig.
|
|
use_ldconfig=yes
|
|
|
|
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
|
|
AC_MSG_CHECKING([for symlinks in ${ac_prefix}/include])
|
|
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
|
|
AC_MSG_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.])
|
|
else
|
|
AC_MSG_RESULT(ok)
|
|
fi
|
|
fi
|
|
|
|
# We have inlined syscalls.
|
|
AC_DEFINE(HAVE_INLINED_SYSCALLS)
|