fi
done
-if test $ac_cv_header_sys_mman_h != yes \
- || test $ac_cv_func_mmap != yes; then
+
+if test "${ac_cv_header_sys_mman_h+set}" = set; then
+ echo "$as_me:$LINENO: checking for sys/mman.h" >&5
+echo $ECHO_N "checking for sys/mman.h... $ECHO_C" >&6
+if test "${ac_cv_header_sys_mman_h+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sys_mman_h" >&5
+echo "${ECHO_T}$ac_cv_header_sys_mman_h" >&6
+else
+ # Is the header compilable?
+echo "$as_me:$LINENO: checking sys/mman.h usability" >&5
+echo $ECHO_N "checking sys/mman.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+$ac_includes_default
+#include <sys/mman.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>conftest.er1
+ ac_status=$?
+ 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_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ ac_header_compiler=yes
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking sys/mman.h presence" >&5
+echo $ECHO_N "checking sys/mman.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#include <sys/mman.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+ (eval $ac_cpp conftest.$ac_ext) 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 $ac_status); } >/dev/null; then
+ if test -s conftest.err; then
+ ac_cpp_err=$ac_c_preproc_warn_flag
+ ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+ else
+ ac_cpp_err=
+ fi
+else
+ ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+ ac_header_preproc=yes
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So? What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+ yes:no: )
+ { echo "$as_me:$LINENO: WARNING: sys/mman.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: sys/mman.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+ { echo "$as_me:$LINENO: WARNING: sys/mman.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: sys/mman.h: proceeding with the compiler's result" >&2;}
+ ac_header_preproc=yes
+ ;;
+ no:yes:* )
+ { echo "$as_me:$LINENO: WARNING: sys/mman.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: sys/mman.h: present but cannot be compiled" >&2;}
+ { echo "$as_me:$LINENO: WARNING: sys/mman.h: check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: sys/mman.h: check for missing prerequisite headers?" >&2;}
+ { echo "$as_me:$LINENO: WARNING: sys/mman.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: sys/mman.h: see the Autoconf documentation" >&2;}
+ { echo "$as_me:$LINENO: WARNING: sys/mman.h: section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: sys/mman.h: section \"Present But Cannot Be Compiled\"" >&2;}
+ { echo "$as_me:$LINENO: WARNING: sys/mman.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: sys/mman.h: proceeding with the preprocessor's result" >&2;}
+ { echo "$as_me:$LINENO: WARNING: sys/mman.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: sys/mman.h: in the future, the compiler will take precedence" >&2;}
+ (
+ cat <<\_ASBOX
+## ------------------------------------------- ##
+## Report this to http://gcc.gnu.org/bugs.html ##
+## ------------------------------------------- ##
+_ASBOX
+ ) |
+ sed "s/^/$as_me: WARNING: /" >&2
+ ;;
+esac
+echo "$as_me:$LINENO: checking for sys/mman.h" >&5
+echo $ECHO_N "checking for sys/mman.h... $ECHO_C" >&6
+if test "${ac_cv_header_sys_mman_h+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ ac_cv_header_sys_mman_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_sys_mman_h" >&5
+echo "${ECHO_T}$ac_cv_header_sys_mman_h" >&6
+
+fi
+if test $ac_cv_header_sys_mman_h = yes; then
+ libffi_header_sys_mman_h=yes
+else
+ libffi_header_sys_mman_h=no
+fi
+
+
+echo "$as_me:$LINENO: checking for mmap" >&5
+echo $ECHO_N "checking for mmap... $ECHO_C" >&6
+if test "${ac_cv_func_mmap+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+/* Define mmap to an innocuous variant, in case <limits.h> declares mmap.
+ For example, HP-UX 11i <limits.h> declares gettimeofday. */
+#define mmap innocuous_mmap
+
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char mmap (); below.
+ Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ <limits.h> exists even on freestanding compilers. */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef mmap
+
+/* Override any gcc2 internal prototype to avoid an error. */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char mmap ();
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_mmap) || defined (__stub___mmap)
+choke me
+#else
+char (*f) () = mmap;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != mmap;
+ ;
+ 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 $ac_status); }; }; then
+ ac_cv_func_mmap=yes
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_mmap=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_mmap" >&5
+echo "${ECHO_T}$ac_cv_func_mmap" >&6
+if test $ac_cv_func_mmap = yes; then
+ libffi_func_mmap=yes
+else
+ libffi_func_mmap=no
+fi
+
+if test "$libffi_header_sys_mman_h" != yes \
+ || test "$libffi_func_mmap" != yes; then
ac_cv_func_mmap_file=no
ac_cv_func_mmap_dev_zero=no
ac_cv_func_mmap_anon=no
git://gcc.gnu.org / gcc.git / commitdiff