-# AC_FUNC_MMAP goes to far and checks for mmap fixed, we do only need mmap
-# at a mmap selected address. See
-# gnu/java/nio/channels/natFileChannelPosix.cc
-
-echo "$as_me:$LINENO: checking for mmap" >&5
-echo $ECHO_N "checking for mmap... $ECHO_C" >&6
-if test "${ac_cv_func_mmap_ok+set}" = set; then
- echo $ECHO_N "(cached) $ECHO_C" >&6
-else
- if test x$gcc_no_link = xyes; then
- { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
- { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h. */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h. */
-
-#include <unistd.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-int
-main ()
-{
- mmap((void *)0, 0, PROT_READ, 0, 0, 0);
- ;
- return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
- (eval $ac_link) 2>conftest.er1
- ac_status=$?
- grep -v '^ *+' conftest.er1 >conftest.err
- rm -f conftest.er1
- cat conftest.err >&5
- echo "$as_me:$LINENO: \$? = $ac_status" >&5
- (exit $ac_status); } &&
- { ac_try='test -z "$ac_c_werror_flag"
- || test ! -s conftest.err'
- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
- (eval $ac_try) 2>&5
- ac_status=$?
- echo "$as_me:$LINENO: \$? = $ac_status" >&5
- (exit $ac_status); }; } &&
- { ac_try='test -s conftest$ac_exeext'
- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
- (eval $ac_try) 2>&5
- ac_status=$?
- echo "$as_me:$LINENO: \$? = $ac_status" >&5
- (exit $ac_status); }; }; then
- ac_cv_func_mmap_ok=yes
-else
- echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_cv_func_mmap_ok=no
-fi
-rm -f conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
-fi
-
-echo "$as_me:$LINENO: result: $ac_cv_func_mmap_ok" >&5
-echo "${ECHO_T}$ac_cv_func_mmap_ok" >&6
-if test $ac_cv_func_mmap_ok = yes
-then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_MMAP 1
-_ACEOF
-
-fi
-