glibc/sysdeps/unix/sysv/linux/configure.in
Roland McGrath 089b2b8ad8 * sysdeps/unix/sysv/linux/configure.in: Use version number in cache
variable name, so new a libc with new requirements won't fail to
 	notice an insufficient Linux version.
1996-07-09 12:22:26 +00:00

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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 $stdio = default && stdio=libio
# Don't bother trying to generate any glue code to be compatible with the
# existing system library, because we are the only system library.
inhibit_glue=yes
AC_CACHE_CHECK(installed Linux kernel header files, libc_cv_linux201, [dnl
AC_TRY_COMPILE([#include <linux/version.h>],
[#if LINUX_VERSION_CODE < (2 *65536+ 0 *256+ 1) /* 2.0.1 */
eat flaming death
#endif],
libc_cv_linux201='2.0.1 or later',
libc_cv_linux201='TOO OLD!')])
if test "$libc_cv_linux201" != '2.0.1 or later'; then
AC_MSG_ERROR([GNU libc requires kernel header files from Linux 2.0.1
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 2.0.1 or later. This check uses
<linux/version.h>, so make sure that file was built correctly when
installing the kernel header files.])
fi