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path: root/sysdeps/unix/sysv/linux/configure.in
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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_linux2, [dnl
AC_TRY_COMPILE([#include <linux/version.h>],
[#if LINUX_VERSION_CODE < (2 *65536+ 0 *256+ 0) /* 2.0.0 */
eat flaming death
#endif],
	       libc_cv_linux2='2.0 or later', libc_cv_linux2='TOO OLD!')])
if test "$libc_cv_linux2" != '2.0 or later'; then
  AC_MSG_ERROR([GNU libc requires kernel header files from Linux 2.0
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 or later.  This check uses
<linux/version.h>, so make sure that file was built correctly when
installing the kernel header files.])
fi