1 # This file is generated from configure.ac by Autoconf. DO NOT EDIT!
2 # Local configure fragment for sysdeps/unix/sysv/linux.
4 # Don't bother trying to generate any glue code to be compatible with the
5 # existing system library, because we are the only system library.
8 if test -n "$sysheaders"; then
10 CPPFLAGS="$CPPFLAGS $SYSINCLUDES"
14 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
15 $as_echo_n "checking for grep that handles long lines and -e... " >&6; }
16 if ${ac_cv_path_GREP+:} false; then :
17 $as_echo_n "(cached) " >&6
19 if test -z "$GREP"; then
20 ac_path_GREP_found=false
21 # Loop through the user's path and test for each of PROGNAME-LIST
22 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
23 for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
26 test -z "$as_dir" && as_dir=.
27 for ac_prog in grep ggrep; do
28 for ac_exec_ext in '' $ac_executable_extensions; do
29 ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
30 { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
31 # Check for GNU ac_path_GREP and select it if it is found.
32 # Check for GNU $ac_path_GREP
33 case `"$ac_path_GREP" --version 2>&1` in
35 ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
38 $as_echo_n 0123456789 >"conftest.in"
41 cat "conftest.in" "conftest.in" >"conftest.tmp"
42 mv "conftest.tmp" "conftest.in"
43 cp "conftest.in" "conftest.nl"
44 $as_echo 'GREP' >> "conftest.nl"
45 "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
46 diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
47 as_fn_arith $ac_count + 1 && ac_count=$as_val
48 if test $ac_count -gt ${ac_path_GREP_max-0}; then
49 # Best one so far, save it but keep looking for a better one
50 ac_cv_path_GREP="$ac_path_GREP"
51 ac_path_GREP_max=$ac_count
53 # 10*(2^10) chars as input seems more than enough
54 test $ac_count -gt 10 && break
56 rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
59 $ac_path_GREP_found && break 3
64 if test -z "$ac_cv_path_GREP"; then
65 as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
72 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
73 $as_echo "$ac_cv_path_GREP" >&6; }
74 GREP="$ac_cv_path_GREP"
77 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
78 $as_echo_n "checking for egrep... " >&6; }
79 if ${ac_cv_path_EGREP+:} false; then :
80 $as_echo_n "(cached) " >&6
82 if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
83 then ac_cv_path_EGREP="$GREP -E"
85 if test -z "$EGREP"; then
86 ac_path_EGREP_found=false
87 # Loop through the user's path and test for each of PROGNAME-LIST
88 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
89 for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
92 test -z "$as_dir" && as_dir=.
93 for ac_prog in egrep; do
94 for ac_exec_ext in '' $ac_executable_extensions; do
95 ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
96 { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
97 # Check for GNU ac_path_EGREP and select it if it is found.
98 # Check for GNU $ac_path_EGREP
99 case `"$ac_path_EGREP" --version 2>&1` in
101 ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
104 $as_echo_n 0123456789 >"conftest.in"
107 cat "conftest.in" "conftest.in" >"conftest.tmp"
108 mv "conftest.tmp" "conftest.in"
109 cp "conftest.in" "conftest.nl"
110 $as_echo 'EGREP' >> "conftest.nl"
111 "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
112 diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
113 as_fn_arith $ac_count + 1 && ac_count=$as_val
114 if test $ac_count -gt ${ac_path_EGREP_max-0}; then
115 # Best one so far, save it but keep looking for a better one
116 ac_cv_path_EGREP="$ac_path_EGREP"
117 ac_path_EGREP_max=$ac_count
119 # 10*(2^10) chars as input seems more than enough
120 test $ac_count -gt 10 && break
122 rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
125 $ac_path_EGREP_found && break 3
130 if test -z "$ac_cv_path_EGREP"; then
131 as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
134 ac_cv_path_EGREP=$EGREP
139 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
140 $as_echo "$ac_cv_path_EGREP" >&6; }
141 EGREP="$ac_cv_path_EGREP"
144 { $as_echo "$as_me:${as_lineno-$LINENO}: checking installed Linux kernel header files" >&5
145 $as_echo_n "checking installed Linux kernel header files... " >&6; }
146 if ${libc_cv_linux2619+:} false; then :
147 $as_echo_n "(cached) " >&6
149 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
150 /* end confdefs.h. */
151 #include <linux/version.h>
152 #if !defined LINUX_VERSION_CODE || LINUX_VERSION_CODE < (2 *65536+ 6 *256+ 19) /* 2.6.19 */
156 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
157 $EGREP "eat flaming death" >/dev/null 2>&1; then :
158 libc_cv_linux2619='TOO OLD!'
160 libc_cv_linux2619='2.6.19 or later'
165 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_linux2619" >&5
166 $as_echo "$libc_cv_linux2619" >&6; }
167 if test "$libc_cv_linux2619" != '2.6.19 or later'; then
168 as_fn_error $? "GNU libc requires kernel header files from
169 Linux 2.6.19 or later to be installed before configuring.
170 The kernel header files are found usually in /usr/include/asm and
171 /usr/include/linux; make sure these directories use files from
172 Linux 2.6.19 or later. This check uses <linux/version.h>, so
173 make sure that file was built correctly when installing the kernel header
174 files. To use kernel headers not from /usr/include/linux, use the
175 configure option --with-headers." "$LINENO" 5
178 # If the user gave a minimal version number test whether the available
179 # kernel headers are young enough. Additionally we have minimal
180 # kernel versions for some architectures. If a previous configure fragment
181 # set arch_minimum_kernel already, let that override our defaults here.
182 # Note that we presume such a fragment has set libc_cv_gcc_unwind_find_fde
183 # if appropriate too.
184 test -n "$arch_minimum_kernel" ||
187 libc_cv_gcc_unwind_find_fde=yes
188 arch_minimum_kernel=2.6.16
191 arch_minimum_kernel=3.4.0
194 libc_cv_gcc_unwind_find_fde=yes
195 arch_minimum_kernel=2.6.16
198 libc_cv_gcc_unwind_find_fde=yes
199 arch_minimum_kernel=2.6.16
202 libc_cv_gcc_unwind_find_fde=yes
203 arch_minimum_kernel=2.6.16
206 arch_minimum_kernel=2.6.16
207 libc_cv_gcc_unwind_find_fde=yes
210 libc_cv_gcc_unwind_find_fde=yes
211 arch_minimum_kernel=2.6.16
214 libc_cv_gcc_unwind_find_fde=yes
215 arch_minimum_kernel=2.6.16
218 arch_minimum_kernel=2.6.16
221 if test -n "$minimum_kernel"; then
223 user_version=$((`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 65536 + \2 \* 256 + \3/'`))
224 arch_version=$((`echo "$arch_minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 65536 + \2 \* 256 + \3/'`))
226 if test $user_version -lt $arch_version; then
227 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: minimum kernel version reset to $arch_minimum_kernel" >&5
228 $as_echo "$as_me: WARNING: minimum kernel version reset to $arch_minimum_kernel" >&2;}
229 minimum_kernel=$arch_minimum_kernel
232 minimum_kernel=$arch_minimum_kernel
235 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for kernel header at least $minimum_kernel" >&5
236 $as_echo_n "checking for kernel header at least $minimum_kernel... " >&6; }
237 decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/(\1 * 65536 + \2 * 256 + \3)/'`;
238 abinum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1,\2,\3/'`;
239 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
240 /* end confdefs.h. */
241 #include <linux/version.h>
242 #if LINUX_VERSION_CODE < $decnum
246 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
247 $EGREP "eat flaming death" >/dev/null 2>&1; then :
248 libc_minimum_kernel='too old!'
250 libc_minimum_kernel=ok
254 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_minimum_kernel" >&5
255 $as_echo "$libc_minimum_kernel" >&6; }
256 if test "$libc_minimum_kernel" = ok; then
257 cat >>confdefs.h <<_ACEOF
258 #define __LINUX_KERNEL_VERSION $decnum
261 cat >>confdefs.h <<_ACEOF
262 #define __ABI_TAG_VERSION $abinum
266 as_fn_error $? "*** The available kernel headers are older than the requested
267 *** compatible kernel version" "$LINENO" 5
270 # The result of the above test for the use of the FDE code is invalid if
271 # the user overrides the decision about the minimum ABI.
272 if test "$oldest_abi" != default && test "2.2.4" \< "$oldest_abi"; then
273 libc_cv_gcc_unwind_find_fde=no
276 if test -n "$sysheaders"; then
277 CPPFLAGS=$OLD_CPPFLAGS
280 # Under Linux the NPTL add-on should be available.
282 # It is available. Good.
291 if test "$nptl_missing"; then
292 if test $enable_sanity = yes; then
294 *** On GNU/Linux systems it is normal to compile GNU libc with the
295 *** \`nptl' add-on. Without that, the library will be
296 *** incompatible with normal GNU/Linux systems.
297 *** If you really mean to not use this add-on, run configure again
298 *** using the extra parameter \`--disable-sanity-checks'."
302 *** WARNING: Are you sure you do not want to use the \`nptl'
307 if test "$prefix" = "/usr/local" -o "$prefix" = "/usr/local/" -o "$prefix" = "NONE"; then
308 if test $enable_sanity = yes; then
310 *** On GNU/Linux systems the GNU C Library should not be installed into
311 *** /usr/local since this might make your system totally unusable.
312 *** We strongly advise to use a different prefix. For details read the FAQ.
313 *** If you really mean to do this, run configure again using the extra
314 *** parameter \`--disable-sanity-checks'."
318 *** WARNING: Do you really want to install the GNU C Library into /usr/local?
319 *** This might make your system totally unusable, for details read the FAQ."
324 # One Linux we use ldconfig.
327 # We need some extensions to the `ldd' script.
331 ldd_rewrite_script=sysdeps/unix/sysv/linux/ldd-rewrite.sed
334 ldd_rewrite_script=sysdeps/unix/sysv/linux/s390/ldd-rewrite.sed
337 ldd_rewrite_script=sysdeps/unix/sysv/linux/sparc/ldd-rewrite.sed
340 ldd_rewrite_script=sysdeps/unix/sysv/linux/x86_64/ldd-rewrite.sed
343 ldd_rewrite_script=sysdeps/unix/sysv/linux/powerpc/ldd-rewrite.sed
350 if test $host = $build; then
351 # If $prefix/include/{net,scsi} are symlinks, make install will
352 # clobber what they're linked to (probably a kernel tree).
353 # test -L ought to work on all Linux boxes.
354 if test "x$prefix" != xNONE; then
357 ac_prefix=$ac_default_prefix
359 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for symlinks in ${ac_prefix}/include" >&5
360 $as_echo_n "checking for symlinks in ${ac_prefix}/include... " >&6; }
362 if test -L ${ac_prefix}/include/net; then
363 ac_message="$ac_message
364 ${ac_prefix}/include/net is a symlink"
366 if test -L ${ac_prefix}/include/scsi; then
367 ac_message="$ac_message
368 ${ac_prefix}/include/scsi is a symlink"
370 if test -n "$ac_message"; then
371 as_fn_error $? "$ac_message
372 \`make install' will destroy the target of the link(s).
373 Delete the links and re-run configure, or better still, move the entire
374 ${ac_prefix}/include directory out of the way." "$LINENO" 5
376 { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5
381 # We have inlined syscalls.
382 $as_echo "#define HAVE_INLINED_SYSCALLS 1" >>confdefs.h