1# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
2 # Local configure fragment for sysdeps/unix/sysv/linux.
3
4if test -n "$sysheaders"; then
5  OLD_CPPFLAGS=$CPPFLAGS
6  CPPFLAGS="$CPPFLAGS $SYSINCLUDES"
7fi
8
9
10{ $as_echo "$as_me:${as_lineno-$LINENO}: checking installed Linux kernel header files" >&5
11$as_echo_n "checking installed Linux kernel header files... " >&6; }
12if ${libc_cv_linux320+:} false; then :
13  $as_echo_n "(cached) " >&6
14else
15  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
16/* end confdefs.h.  */
17#include <linux/version.h>
18#if !defined LINUX_VERSION_CODE || LINUX_VERSION_CODE <  (3 *65536+ 2 *256+ 0) /* 3.2.0 */
19# error kernel headers missing or too old
20#endif
21int
22main ()
23{
24
25  ;
26  return 0;
27}
28_ACEOF
29if ac_fn_c_try_cpp "$LINENO"; then :
30  libc_cv_linux320='3.2.0 or later'
31else
32  libc_cv_linux320='missing or too old!'
33fi
34rm -f conftest.err conftest.i conftest.$ac_ext
35fi
36{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_linux320" >&5
37$as_echo "$libc_cv_linux320" >&6; }
38if test "$libc_cv_linux320" != '3.2.0 or later'; then
39  as_fn_error $? "GNU libc requires kernel header files from
40Linux 3.2.0 or later to be installed before configuring.
41The kernel header files are found usually in /usr/include/asm and
42/usr/include/linux; make sure these directories use files from
43Linux 3.2.0 or later.  This check uses <linux/version.h>, so
44make sure that file was built correctly when installing the kernel header
45files.  To use kernel headers not from /usr/include/linux, use the
46configure option --with-headers." "$LINENO" 5
47fi
48
49# If the user gave a minimal version number test whether the available
50# kernel headers are young enough.  Additionally we have minimal
51# kernel versions for some architectures.  If a previous configure fragment
52# set arch_minimum_kernel already, let that override our defaults here.
53# Note that we presume such a fragment has set libc_cv_gcc_unwind_find_fde
54# if appropriate too.
55test -n "$arch_minimum_kernel" || arch_minimum_kernel=3.2.0
56if test -n "$minimum_kernel"; then
57
58  user_version=$((`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 65536 + \2 \* 256 + \3/'`))
59  arch_version=$((`echo "$arch_minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 65536 + \2 \* 256 + \3/'`))
60
61  if test $user_version -lt $arch_version; then
62    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: minimum kernel version reset to $arch_minimum_kernel" >&5
63$as_echo "$as_me: WARNING: minimum kernel version reset to $arch_minimum_kernel" >&2;}
64    minimum_kernel=$arch_minimum_kernel
65  fi
66else
67  minimum_kernel=$arch_minimum_kernel
68fi
69
70{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for kernel header at least $minimum_kernel" >&5
71$as_echo_n "checking for kernel header at least $minimum_kernel... " >&6; }
72decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/(\1 * 65536 + \2 * 256 + \3)/'`;
73abinum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1,\2,\3/'`;
74cat confdefs.h - <<_ACEOF >conftest.$ac_ext
75/* end confdefs.h.  */
76#include <linux/version.h>
77#if LINUX_VERSION_CODE < $decnum
78# error kernel headers too old
79#endif
80int
81main ()
82{
83
84  ;
85  return 0;
86}
87_ACEOF
88if ac_fn_c_try_cpp "$LINENO"; then :
89  libc_minimum_kernel=ok
90else
91  libc_minimum_kernel='too old!'
92fi
93rm -f conftest.err conftest.i conftest.$ac_ext
94{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_minimum_kernel" >&5
95$as_echo "$libc_minimum_kernel" >&6; }
96if test "$libc_minimum_kernel" = ok; then
97  cat >>confdefs.h <<_ACEOF
98#define __LINUX_KERNEL_VERSION $decnum
99_ACEOF
100
101  cat >>confdefs.h <<_ACEOF
102#define __ABI_TAG_VERSION $abinum
103_ACEOF
104
105else
106  as_fn_error $? "*** The available kernel headers are older than the requested
107*** compatible kernel version" "$LINENO" 5
108fi
109
110if test -n "$sysheaders"; then
111  CPPFLAGS=$OLD_CPPFLAGS
112fi
113
114if test "$prefix" = "/usr/local" -o "$prefix" = "/usr/local/" -o "$prefix" = "NONE"; then
115  if test $enable_sanity = yes; then
116    echo "\
117*** On GNU/Linux systems the GNU C Library should not be installed into
118*** /usr/local since this might make your system totally unusable.
119*** We strongly advise to use a different prefix.  For details read the FAQ.
120*** If you really mean to do this, run configure again using the extra
121*** parameter \`--disable-sanity-checks'."
122    exit 1
123  else
124    echo "\
125*** WARNING: Do you really want to install the GNU C Library into /usr/local?
126*** This might make your system totally unusable, for details read the FAQ."
127  fi
128fi
129
130
131# One Linux we use ldconfig.
132use_ldconfig=yes
133
134if test $host = $build; then
135  # If $prefix/include/{net,scsi} are symlinks, make install will
136  # clobber what they're linked to (probably a kernel tree).
137  # test -L ought to work on all Linux boxes.
138  if test "x$prefix" != xNONE; then
139    ac_prefix=$prefix
140  else
141    ac_prefix=$ac_default_prefix
142  fi
143  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for symlinks in ${ac_prefix}/include" >&5
144$as_echo_n "checking for symlinks in ${ac_prefix}/include... " >&6; }
145  ac_message=
146  if test -L ${ac_prefix}/include/net; then
147    ac_message="$ac_message
148   ${ac_prefix}/include/net is a symlink"
149  fi
150  if test -L ${ac_prefix}/include/scsi; then
151    ac_message="$ac_message
152   ${ac_prefix}/include/scsi is a symlink"
153  fi
154  if test -n "$ac_message"; then
155    as_fn_error $? "$ac_message
156\`make install' will destroy the target of the link(s).
157Delete the links and re-run configure, or better still, move the entire
158${ac_prefix}/include directory out of the way." "$LINENO" 5
159  else
160    { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5
161$as_echo "ok" >&6; }
162  fi
163fi
164
165# We have inlined syscalls.
166$as_echo "#define HAVE_INLINED_SYSCALLS 1" >>confdefs.h
167
168