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acinclude.m4 (AC_FUNC_MMAP_BLACKLIST): Check for <sys/mman.h> and mmap() explicitly instead of relying on preset...
2004-07-30 Maciej W. Rozycki <macro@linux-mips.org> * acinclude.m4 (AC_FUNC_MMAP_BLACKLIST): Check for <sys/mman.h> and mmap() explicitly instead of relying on preset autoconf cache variables. * aclocal.m4: Regenerate. * configure: Regenerate. From-SVN: r85500
This commit is contained in:
Maciej W. Rozycki
Nathanael Nerode
parent
b522f768ab
commit
4d44736452
@ -1,3 +1,11 @@
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2004-07-30 Maciej W. Rozycki <macro@linux-mips.org>
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* acinclude.m4 (AC_FUNC_MMAP_BLACKLIST): Check for <sys/mman.h>
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and mmap() explicitly instead of relying on preset autoconf cache
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variables.
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* aclocal.m4: Regenerate.
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* configure: Regenerate.
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2004-07-11 Ulrich Weigand <uweigand@de.ibm.com>
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* src/s390/ffi.c (ffi_prep_args): Fix C aliasing violation.
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@ -11,8 +11,12 @@ AC_SUBST(LIBTOOL)
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# mmap(2) blacklisting. Some platforms provide the mmap library routine
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# but don't support all of the features we need from it.
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AC_DEFUN([AC_FUNC_MMAP_BLACKLIST],
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[if test $ac_cv_header_sys_mman_h != yes \
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|| test $ac_cv_func_mmap != yes; then
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[
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AC_CHECK_HEADER([sys/mman.h],
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[libffi_header_sys_mman_h=yes], [libffi_header_sys_mman_h=no])
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AC_CHECK_FUNC([mmap], [libffi_func_mmap=yes], [libffi_func_mmap=no])
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if test "$libffi_header_sys_mman_h" != yes \
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|| test "$libffi_func_mmap" != yes; then
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ac_cv_func_mmap_file=no
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ac_cv_func_mmap_dev_zero=no
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ac_cv_func_mmap_anon=no
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243
libffi/configure
vendored
243
libffi/configure
vendored
@ -4883,8 +4883,247 @@ _ACEOF
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fi
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done
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if test $ac_cv_header_sys_mman_h != yes \
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|| test $ac_cv_func_mmap != yes; then
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if test "${ac_cv_header_sys_mman_h+set}" = set; then
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echo "$as_me:$LINENO: checking for sys/mman.h" >&5
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echo $ECHO_N "checking for sys/mman.h... $ECHO_C" >&6
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if test "${ac_cv_header_sys_mman_h+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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fi
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echo "$as_me:$LINENO: result: $ac_cv_header_sys_mman_h" >&5
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echo "${ECHO_T}$ac_cv_header_sys_mman_h" >&6
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else
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# Is the header compilable?
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echo "$as_me:$LINENO: checking sys/mman.h usability" >&5
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echo $ECHO_N "checking sys/mman.h usability... $ECHO_C" >&6
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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$ac_includes_default
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#include <sys/mman.h>
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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ac_header_compiler=yes
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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ac_header_compiler=no
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fi
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rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
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echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
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echo "${ECHO_T}$ac_header_compiler" >&6
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# Is the header present?
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echo "$as_me:$LINENO: checking sys/mman.h presence" >&5
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echo $ECHO_N "checking sys/mman.h presence... $ECHO_C" >&6
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#include <sys/mman.h>
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_ACEOF
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if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
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(eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } >/dev/null; then
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if test -s conftest.err; then
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ac_cpp_err=$ac_c_preproc_warn_flag
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ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
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else
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ac_cpp_err=
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fi
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else
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ac_cpp_err=yes
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fi
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if test -z "$ac_cpp_err"; then
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ac_header_preproc=yes
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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ac_header_preproc=no
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fi
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rm -f conftest.err conftest.$ac_ext
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echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
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echo "${ECHO_T}$ac_header_preproc" >&6
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# So? What about this header?
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case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
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yes:no: )
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{ echo "$as_me:$LINENO: WARNING: sys/mman.h: accepted by the compiler, rejected by the preprocessor!" >&5
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echo "$as_me: WARNING: sys/mman.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
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{ echo "$as_me:$LINENO: WARNING: sys/mman.h: proceeding with the compiler's result" >&5
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echo "$as_me: WARNING: sys/mman.h: proceeding with the compiler's result" >&2;}
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ac_header_preproc=yes
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;;
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no:yes:* )
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{ echo "$as_me:$LINENO: WARNING: sys/mman.h: present but cannot be compiled" >&5
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echo "$as_me: WARNING: sys/mman.h: present but cannot be compiled" >&2;}
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{ echo "$as_me:$LINENO: WARNING: sys/mman.h: check for missing prerequisite headers?" >&5
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echo "$as_me: WARNING: sys/mman.h: check for missing prerequisite headers?" >&2;}
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{ echo "$as_me:$LINENO: WARNING: sys/mman.h: see the Autoconf documentation" >&5
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echo "$as_me: WARNING: sys/mman.h: see the Autoconf documentation" >&2;}
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{ echo "$as_me:$LINENO: WARNING: sys/mman.h: section \"Present But Cannot Be Compiled\"" >&5
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echo "$as_me: WARNING: sys/mman.h: section \"Present But Cannot Be Compiled\"" >&2;}
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{ echo "$as_me:$LINENO: WARNING: sys/mman.h: proceeding with the preprocessor's result" >&5
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echo "$as_me: WARNING: sys/mman.h: proceeding with the preprocessor's result" >&2;}
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{ echo "$as_me:$LINENO: WARNING: sys/mman.h: in the future, the compiler will take precedence" >&5
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echo "$as_me: WARNING: sys/mman.h: in the future, the compiler will take precedence" >&2;}
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(
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cat <<\_ASBOX
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## ------------------------------------------- ##
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## Report this to http://gcc.gnu.org/bugs.html ##
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## ------------------------------------------- ##
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_ASBOX
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) |
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sed "s/^/$as_me: WARNING: /" >&2
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;;
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esac
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echo "$as_me:$LINENO: checking for sys/mman.h" >&5
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echo $ECHO_N "checking for sys/mman.h... $ECHO_C" >&6
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if test "${ac_cv_header_sys_mman_h+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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ac_cv_header_sys_mman_h=$ac_header_preproc
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fi
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echo "$as_me:$LINENO: result: $ac_cv_header_sys_mman_h" >&5
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echo "${ECHO_T}$ac_cv_header_sys_mman_h" >&6
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fi
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if test $ac_cv_header_sys_mman_h = yes; then
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libffi_header_sys_mman_h=yes
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else
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libffi_header_sys_mman_h=no
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fi
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echo "$as_me:$LINENO: checking for mmap" >&5
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echo $ECHO_N "checking for mmap... $ECHO_C" >&6
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if test "${ac_cv_func_mmap+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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/* Define mmap to an innocuous variant, in case <limits.h> declares mmap.
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For example, HP-UX 11i <limits.h> declares gettimeofday. */
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#define mmap innocuous_mmap
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/* System header to define __stub macros and hopefully few prototypes,
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which can conflict with char mmap (); below.
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Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
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<limits.h> exists even on freestanding compilers. */
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#ifdef __STDC__
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# include <limits.h>
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#else
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# include <assert.h>
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#endif
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#undef mmap
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/* Override any gcc2 internal prototype to avoid an error. */
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* We use char because int might match the return type of a gcc2
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builtin and then its argument prototype would still apply. */
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char mmap ();
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/* The GNU C library defines this for functions which it implements
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to always fail with ENOSYS. Some functions are actually named
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something starting with __ and the normal name is an alias. */
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#if defined (__stub_mmap) || defined (__stub___mmap)
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choke me
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#else
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char (*f) () = mmap;
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#endif
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#ifdef __cplusplus
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}
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#endif
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int
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main ()
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{
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return f != mmap;
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext conftest$ac_exeext
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if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
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(eval $ac_link) 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; } &&
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{ ac_try='test -s conftest$ac_exeext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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ac_cv_func_mmap=yes
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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ac_cv_func_mmap=no
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fi
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rm -f conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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fi
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echo "$as_me:$LINENO: result: $ac_cv_func_mmap" >&5
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echo "${ECHO_T}$ac_cv_func_mmap" >&6
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if test $ac_cv_func_mmap = yes; then
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libffi_func_mmap=yes
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else
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libffi_func_mmap=no
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fi
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if test "$libffi_header_sys_mman_h" != yes \
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|| test "$libffi_func_mmap" != yes; then
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ac_cv_func_mmap_file=no
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ac_cv_func_mmap_dev_zero=no
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ac_cv_func_mmap_anon=no
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