+echo $ac_n "checking size of short""... $ac_c" 1>&6
+echo "configure:10432: checking size of short" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_short'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test "$cross_compiling" = yes; then
+ ac_cv_sizeof_short=2
+else
+ cat > conftest.$ac_ext <<EOF
+#line 10440 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", sizeof(short));
+ exit(0);
+}
+EOF
+if { (eval echo configure:10451: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ac_cv_sizeof_short=`cat conftestval`
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ac_cv_sizeof_short=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_short" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_SHORT $ac_cv_sizeof_short
+EOF
+
+
+echo $ac_n "checking size of void *""... $ac_c" 1>&6
+echo "configure:10471: checking size of void *" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_void_p'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test "$cross_compiling" = yes; then
+ ac_cv_sizeof_void_p=4
+else
+ cat > conftest.$ac_ext <<EOF
+#line 10479 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", sizeof(void *));
+ exit(0);
+}
+EOF
+if { (eval echo configure:10490: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ac_cv_sizeof_void_p=`cat conftestval`
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ac_cv_sizeof_void_p=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_void_p" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_VOID_P $ac_cv_sizeof_void_p
+EOF
+
+
+echo $ac_n "checking size of int""... $ac_c" 1>&6
+echo "configure:10510: checking size of int" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_int'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test "$cross_compiling" = yes; then
+ ac_cv_sizeof_int=4
+else
+ cat > conftest.$ac_ext <<EOF
+#line 10518 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", sizeof(int));
+ exit(0);
+}
+EOF
+if { (eval echo configure:10529: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ac_cv_sizeof_int=`cat conftestval`
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ac_cv_sizeof_int=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_int" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_INT $ac_cv_sizeof_int
+EOF
+
+
+echo $ac_n "checking size of long""... $ac_c" 1>&6
+echo "configure:10549: checking size of long" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_long'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test "$cross_compiling" = yes; then
+ ac_cv_sizeof_long=4
+else
+ cat > conftest.$ac_ext <<EOF
+#line 10557 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", sizeof(long));
+ exit(0);
+}
+EOF
+if { (eval echo configure:10568: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ac_cv_sizeof_long=`cat conftestval`
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ac_cv_sizeof_long=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_long" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_LONG $ac_cv_sizeof_long
+EOF
+
+
+
+case "${host}" in
+ arm-*-linux* )
+ echo $ac_n "checking size of long long""... $ac_c" 1>&6
+echo "configure:10591: checking size of long long" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_long_long'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test "$cross_compiling" = yes; then
+ ac_cv_sizeof_long_long=8
+else
+ cat > conftest.$ac_ext <<EOF
+#line 10599 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", sizeof(long long));
+ exit(0);
+}
+EOF
+if { (eval echo configure:10610: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ac_cv_sizeof_long_long=`cat conftestval`
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ac_cv_sizeof_long_long=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_long_long" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_LONG_LONG $ac_cv_sizeof_long_long
+EOF
+
+
+ ;;
+ *-hp-hpux* )
+ echo $ac_n "checking size of long long""... $ac_c" 1>&6
+echo "configure:10632: checking size of long long" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_long_long'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test "$cross_compiling" = yes; then
+ ac_cv_sizeof_long_long=0
+else
+ cat > conftest.$ac_ext <<EOF
+#line 10640 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", sizeof(long long));
+ exit(0);
+}
+EOF
+if { (eval echo configure:10651: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ac_cv_sizeof_long_long=`cat conftestval`
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ac_cv_sizeof_long_long=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_long_long" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_LONG_LONG $ac_cv_sizeof_long_long
+EOF
+
+
+ if test "$ac_cv_sizeof_long_long" != "0"; then
+ CPPFLAGS="$CPPFLAGS -D_INCLUDE_LONGLONG"
+ fi
+ ;;
+ * )
+ echo $ac_n "checking size of long long""... $ac_c" 1>&6
+echo "configure:10676: checking size of long long" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_long_long'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test "$cross_compiling" = yes; then
+ ac_cv_sizeof_long_long=0
+else
+ cat > conftest.$ac_ext <<EOF
+#line 10684 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", sizeof(long long));
+ exit(0);
+}
+EOF
+if { (eval echo configure:10695: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ac_cv_sizeof_long_long=`cat conftestval`
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ac_cv_sizeof_long_long=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_long_long" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_LONG_LONG $ac_cv_sizeof_long_long
+EOF
+
+
+esac
+
+echo $ac_n "checking size of wchar_t""... $ac_c" 1>&6
+echo "configure:10717: checking size of wchar_t" >&5
+if eval "test \"`echo '$''{'wx_cv_sizeof_wchar_t'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ if test "$cross_compiling" = yes; then
+ wx_cv_sizeof_wchar_t=4
+
+else
+ cat > conftest.$ac_ext <<EOF
+#line 10727 "configure"
+#include "confdefs.h"
+
+ #ifdef HAVE_WCHAR_H
+ # ifdef __CYGWIN__
+ # include <stddef.h>
+ # endif
+ # include <wchar.h>
+ #endif
+ #ifdef HAVE_STDLIB_H
+ # include <stdlib.h>
+ #endif
+ #include <stdio.h>
+ int main()
+ {
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%i", sizeof(wchar_t));
+ exit(0);
+ }
+
+EOF
+if { (eval echo configure:10749: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ wx_cv_sizeof_wchar_t=`cat conftestval`
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ wx_cv_sizeof_wchar_t=0
+fi
+rm -fr conftest*
+fi
+
+
+fi
+
+echo "$ac_t""$wx_cv_sizeof_wchar_t" 1>&6
+
+cat >> confdefs.h <<EOF
+#define SIZEOF_WCHAR_T $wx_cv_sizeof_wchar_t
+EOF
+
+
+# Check whether --enable-largefile or --disable-largefile was given.
+if test "${enable_largefile+set}" = set; then
+ enableval="$enable_largefile"
+ :
+fi
+
+if test "$enable_largefile" != no; then
+ wx_largefile=no
+
+ echo $ac_n "checking for _FILE_OFFSET_BITS value needed for large files""... $ac_c" 1>&6
+echo "configure:10781: checking for _FILE_OFFSET_BITS value needed for large files" >&5
+if eval "test \"`echo '$''{'ac_cv_sys_file_offset_bits'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ cat > conftest.$ac_ext <<EOF
+#line 10787 "configure"
+#include "confdefs.h"
+#define _FILE_OFFSET_BITS 64
+ #include <sys/types.h>
+int main() {
+typedef struct {
+ unsigned int field: sizeof(off_t) == 8;
+} wxlf;
+
+; return 0; }
+EOF
+if { (eval echo configure:10798: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+ rm -rf conftest*
+ ac_cv_sys_file_offset_bits=64
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ac_cv_sys_file_offset_bits=no
+fi
+rm -f conftest*
+
+
+fi
+
+echo "$ac_t""$ac_cv_sys_file_offset_bits" 1>&6
+
+ if test "$ac_cv_sys_file_offset_bits" != no; then
+ wx_largefile=yes
+ cat >> confdefs.h <<EOF
+#define _FILE_OFFSET_BITS $ac_cv_sys_file_offset_bits
+EOF
+
+ fi
+
+ if test "x$wx_largefile" != "xyes"; then
+
+ echo $ac_n "checking for _LARGE_FILES value needed for large files""... $ac_c" 1>&6
+echo "configure:10825: checking for _LARGE_FILES value needed for large files" >&5
+if eval "test \"`echo '$''{'ac_cv_sys_large_files'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ cat > conftest.$ac_ext <<EOF
+#line 10831 "configure"
+#include "confdefs.h"
+#define _LARGE_FILES 1
+ #include <sys/types.h>
+int main() {
+typedef struct {
+ unsigned int field: sizeof(off_t) == 8;
+} wxlf;
+
+; return 0; }
+EOF
+if { (eval echo configure:10842: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+ rm -rf conftest*
+ ac_cv_sys_large_files=1
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ac_cv_sys_large_files=no
+fi
+rm -f conftest*
+
+
+fi
+
+echo "$ac_t""$ac_cv_sys_large_files" 1>&6
+
+ if test "$ac_cv_sys_large_files" != no; then
+ wx_largefile=yes
+ cat >> confdefs.h <<EOF
+#define _LARGE_FILES $ac_cv_sys_large_files
+EOF
+
+ fi
+
+ fi
+
+ echo $ac_n "checking if large file support is available""... $ac_c" 1>&6
+echo "configure:10869: checking if large file support is available" >&5
+ if test "x$wx_largefile" = "xyes"; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_LARGEFILE_SUPPORT 1
+EOF
+
+ fi
+ echo "$ac_t""$wx_largefile" 1>&6
+fi
+
+
+if test "x$wx_largefile" = "xyes"; then
+ if test "x$ac_cv_sys_file_offset_bits" = "x64"; then
+ WX_LARGEFILE_FLAGS="-D_FILE_OFFSET_BITS=64 -D_LARGE_FILES"
+ else
+ WX_LARGEFILE_FLAGS="-D_LARGE_FILES"
+ fi
+ CPPFLAGS="$CPPFLAGS $WX_LARGEFILE_FLAGS"
+fi
+
+echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
+echo "configure:10890: checking whether byte ordering is bigendian" >&5
+if eval "test \"`echo '$''{'ac_cv_c_bigendian'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_cv_c_bigendian=unknown
+# See if sys/param.h defines the BYTE_ORDER macro.
+cat > conftest.$ac_ext <<EOF
+#line 10897 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <sys/param.h>
+int main() {
+
+#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
+ bogus endian macros
+#endif
+; return 0; }
+EOF
+if { (eval echo configure:10908: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+ rm -rf conftest*
+ # It does; now see whether it defined to BIG_ENDIAN or not.
+cat > conftest.$ac_ext <<EOF
+#line 10912 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <sys/param.h>
+int main() {
+
+#if BYTE_ORDER != BIG_ENDIAN
+ not big endian
+#endif
+; return 0; }
+EOF
+if { (eval echo configure:10923: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+ rm -rf conftest*
+ ac_cv_c_bigendian=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ac_cv_c_bigendian=no
+fi
+rm -f conftest*
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+fi
+rm -f conftest*
+if test $ac_cv_c_bigendian = unknown; then
+if test "$cross_compiling" = yes; then
+ ac_cv_c_bigendian=unknown
+else
+ cat > conftest.$ac_ext <<EOF
+#line 10943 "configure"
+#include "confdefs.h"
+main () {
+ /* Are we little or big endian? From Harbison&Steele. */
+ union
+ {
+ long l;
+ char c[sizeof (long)];
+ } u;
+ u.l = 1;
+ exit (u.c[sizeof (long) - 1] == 1);
+}
+EOF
+if { (eval echo configure:10956: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ac_cv_c_bigendian=no
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ac_cv_c_bigendian=yes
+fi
+rm -fr conftest*
+fi
+
+fi
+fi
+
+echo "$ac_t""$ac_cv_c_bigendian" 1>&6
+if test $ac_cv_c_bigendian = unknown; then
+ echo "configure: warning: Assuming little-endian target machine - this may be overriden by adding the line "ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}" to config.cache file" 1>&2
+fi
+if test $ac_cv_c_bigendian = yes; then
+ cat >> confdefs.h <<\EOF
+#define WORDS_BIGENDIAN 1
+EOF
+
+fi
+
+
+echo $ac_n "checking how to run the C++ preprocessor""... $ac_c" 1>&6
+echo "configure:10984: checking how to run the C++ preprocessor" >&5
+if test -z "$CXXCPP"; then
+if eval "test \"`echo '$''{'ac_cv_prog_CXXCPP'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+ CXXCPP="${CXX-g++} -E"
+ cat > conftest.$ac_ext <<EOF
+#line 10997 "configure"
+#include "confdefs.h"
+#include <stdlib.h>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:11002: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ :
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ CXXCPP=/lib/cpp
+fi
+rm -f conftest*
+ ac_cv_prog_CXXCPP="$CXXCPP"
+ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+fi
+fi
+CXXCPP="$ac_cv_prog_CXXCPP"
+echo "$ac_t""$CXXCPP" 1>&6
+
+
+ if test "$cross_compiling" = "yes"; then
+ cat >> confdefs.h <<\EOF
+#define wxUSE_IOSTREAMH 1
+EOF
+
+ else
+
+ ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+
+
+ for ac_hdr in iostream
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:11046: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 11051 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:11056: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=yes"
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+
+ if test "$ac_cv_header_iostream" = "yes" ; then
+ :
+ else
+ cat >> confdefs.h <<\EOF
+#define wxUSE_IOSTREAMH 1
+EOF
+
projects / wxWidgets.git / blobdiff