+if test -n "$cf_new_extra_cppflags" ; then
+
+ test -n "$EXTRA_CPPFLAGS" && EXTRA_CPPFLAGS="$EXTRA_CPPFLAGS "
+ EXTRA_CPPFLAGS="${EXTRA_CPPFLAGS}$cf_new_extra_cppflags"
+
+fi
+
+ NCURSES_IMPEXP="__attribute__ ((visibility(\"default\")))"
+ fi
+ if test -n "$CXX"
+ then
+ ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+ac_main_return=return
+
+echo "$as_me:15723: checking if $CXX -fvisibility=hidden option works" >&5
+echo $ECHO_N "checking if $CXX -fvisibility=hidden option works... $ECHO_C" >&6
+if test "${cf_cv_fvisibility_hidden2+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+ cf_save_cflags="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fvisibility=hidden"
+ cat >conftest.$ac_ext <<_ACEOF
+#line 15732 "configure"
+#include "confdefs.h"
+
+__attribute__ ((visibility("default"))) int somefunc() {return 42;}
+
+int
+main (void)
+{
+
+ if (somefunc()) return 1;
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:15748: \"$ac_link\"") >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ echo "$as_me:15751: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest$ac_exeext'
+ { (eval echo "$as_me:15754: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:15757: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ cf_cv_fvisibility_hidden2=yes
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+cf_cv_fvisibility_hidden2=no
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+ CXXFLAGS=$cf_save_cflags
+
+fi
+echo "$as_me:15769: result: $cf_cv_fvisibility_hidden2" >&5
+echo "${ECHO_T}$cf_cv_fvisibility_hidden2" >&6
+
+ if test "x$cf_cv_fvisibility_hidden2" = xyes
+ then
+
+cf_save_CXXFLAGS="$CFLAGS"
+CFLAGS="$CXXFLAGS"
+
+cf_fix_cppflags=no
+cf_new_cflags=
+cf_new_cppflags=
+cf_new_extra_cppflags=
+
+for cf_add_cflags in -fvisibility=hidden
+do
+case $cf_fix_cppflags in
+(no)
+ case $cf_add_cflags in
+ (-undef|-nostdinc*|-I*|-D*|-U*|-E|-P|-C)
+ case $cf_add_cflags in
+ (-D*)
+ cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^-D[^=]*='\''\"[^"]*//'`
+
+ test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
+ && test -z "${cf_tst_cflags}" \
+ && cf_fix_cppflags=yes
+
+ if test $cf_fix_cppflags = yes ; then
+
+ test -n "$cf_new_extra_cppflags" && cf_new_extra_cppflags="$cf_new_extra_cppflags "
+ cf_new_extra_cppflags="${cf_new_extra_cppflags}$cf_add_cflags"
+
+ continue
+ elif test "${cf_tst_cflags}" = "\"'" ; then
+
+ test -n "$cf_new_extra_cppflags" && cf_new_extra_cppflags="$cf_new_extra_cppflags "
+ cf_new_extra_cppflags="${cf_new_extra_cppflags}$cf_add_cflags"
+
+ continue
+ fi
+ ;;
+ esac
+ case "$CPPFLAGS" in
+ (*$cf_add_cflags)
+ ;;
+ (*)
+ case $cf_add_cflags in
+ (-D*)
+ cf_tst_cppflags=`echo "x$cf_add_cflags" | sed -e 's/^...//' -e 's/=.*//'`
+
+CPPFLAGS=`echo "$CPPFLAGS" | \
+ sed -e 's/-[UD]'"$cf_tst_cppflags"'\(=[^ ]*\)\?[ ]/ /g' \
+ -e 's/-[UD]'"$cf_tst_cppflags"'\(=[^ ]*\)\?$//g'`
+
+ ;;
+ esac
+
+ test -n "$cf_new_cppflags" && cf_new_cppflags="$cf_new_cppflags "
+ cf_new_cppflags="${cf_new_cppflags}$cf_add_cflags"
+
+ ;;
+ esac
+ ;;
+ (*)
+
+ test -n "$cf_new_cflags" && cf_new_cflags="$cf_new_cflags "
+ cf_new_cflags="${cf_new_cflags}$cf_add_cflags"
+
+ ;;
+ esac
+ ;;
+(yes)
+
+ test -n "$cf_new_extra_cppflags" && cf_new_extra_cppflags="$cf_new_extra_cppflags "
+ cf_new_extra_cppflags="${cf_new_extra_cppflags}$cf_add_cflags"
+
+ cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^[^"]*"'\''//'`
+
+ test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
+ && test -z "${cf_tst_cflags}" \
+ && cf_fix_cppflags=no
+ ;;
+esac
+done
+
+if test -n "$cf_new_cflags" ; then
+
+ test -n "$CFLAGS" && CFLAGS="$CFLAGS "
+ CFLAGS="${CFLAGS}$cf_new_cflags"
+
+fi
+
+if test -n "$cf_new_cppflags" ; then
+
+ test -n "$CPPFLAGS" && CPPFLAGS="$CPPFLAGS "
+ CPPFLAGS="${CPPFLAGS}$cf_new_cppflags"
+
+fi
+
+if test -n "$cf_new_extra_cppflags" ; then
+
+ test -n "$EXTRA_CPPFLAGS" && EXTRA_CPPFLAGS="$EXTRA_CPPFLAGS "
+ EXTRA_CPPFLAGS="${EXTRA_CPPFLAGS}$cf_new_extra_cppflags"
+
+fi
+
+CXXFLAGS="$CFLAGS"
+CFLAGS="$cf_save_CXXFLAGS"
+
+ NCURSES_CXX_IMPEXP="__attribute__ ((visibility(\"default\")))"
+ fi
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+ac_main_return=return
+
+ fi
+fi
+
+### use option --enable-interop to turn on use of bindings used for interop
+echo "$as_me:15892: checking if you want interop bindings" >&5
+echo $ECHO_N "checking if you want interop bindings... $ECHO_C" >&6
+
+# Check whether --enable-interop or --disable-interop was given.
+if test "${enable_interop+set}" = set; then
+ enableval="$enable_interop"
+ with_exp_interop=$enableval
+else
+ with_exp_interop=$cf_dft_interop
+fi;
+echo "$as_me:15902: result: $with_exp_interop" >&5
+echo "${ECHO_T}$with_exp_interop" >&6
+
+NCURSES_INTEROP_FUNCS=0
+test "x$with_exp_interop" = xyes && NCURSES_INTEROP_FUNCS=1
+
+echo "$as_me:15908: checking if you want experimental safe-sprintf code" >&5
+echo $ECHO_N "checking if you want experimental safe-sprintf code... $ECHO_C" >&6
+
+# Check whether --enable-safe-sprintf or --disable-safe-sprintf was given.
+if test "${enable_safe_sprintf+set}" = set; then
+ enableval="$enable_safe_sprintf"
+ with_safe_sprintf=$enableval
+else
+ with_safe_sprintf=no
+fi;
+echo "$as_me:15918: result: $with_safe_sprintf" >&5
+echo "${ECHO_T}$with_safe_sprintf" >&6
+
+### use option --disable-scroll-hints to turn off use of scroll-hints scrolling logic
+# when hashmap is used scroll hints are useless
+if test "$with_hashmap" = no ; then
+echo "$as_me:15924: checking if you want to experiment without scrolling-hints code" >&5
+echo $ECHO_N "checking if you want to experiment without scrolling-hints code... $ECHO_C" >&6
+
+# Check whether --enable-scroll-hints or --disable-scroll-hints was given.
+if test "${enable_scroll_hints+set}" = set; then
+ enableval="$enable_scroll_hints"
+ with_scroll_hints=$enableval
+else
+ with_scroll_hints=yes
+fi;
+echo "$as_me:15934: result: $with_scroll_hints" >&5
+echo "${ECHO_T}$with_scroll_hints" >&6
+test "x$with_scroll_hints" = xyes &&
+cat >>confdefs.h <<\EOF
+#define USE_SCROLL_HINTS 1
+EOF
+
+fi
+
+echo "$as_me:15943: checking if you want wgetch-events code" >&5
+echo $ECHO_N "checking if you want wgetch-events code... $ECHO_C" >&6
+
+# Check whether --enable-wgetch-events or --disable-wgetch-events was given.
+if test "${enable_wgetch_events+set}" = set; then
+ enableval="$enable_wgetch_events"
+ with_wgetch_events=$enableval
+else
+ with_wgetch_events=no
+fi;
+echo "$as_me:15953: result: $with_wgetch_events" >&5
+echo "${ECHO_T}$with_wgetch_events" >&6
+if test "x$with_wgetch_events" = xyes ; then
+
+cat >>confdefs.h <<\EOF
+#define NCURSES_WGETCH_EVENTS 1
+EOF
+
+ NCURSES_WGETCH_EVENTS=1
+else
+ NCURSES_WGETCH_EVENTS=0
+fi
+
+case $cf_cv_system_name in
+(*mingw32*|*mingw64*|*-msvc*)
+ echo "$as_me:15968: checking if you want experimental-Windows driver" >&5
+echo $ECHO_N "checking if you want experimental-Windows driver... $ECHO_C" >&6
+
+# Check whether --enable-exp-win32 or --disable-exp-win32 was given.
+if test "${enable_exp_win32+set}" = set; then
+ enableval="$enable_exp_win32"
+ with_exp_win32=$enableval
+else
+ with_exp_win32=no
+fi;
+ echo "$as_me:15978: result: $with_exp_win32" >&5
+echo "${ECHO_T}$with_exp_win32" >&6
+ if test "x$with_exp_win32" = xyes
+ then
+
+cat >>confdefs.h <<\EOF
+#define EXP_WIN32_DRIVER 1
+EOF
+
+ EXP_WIN32_DRIVER=1
+ INTERNALS_HDR='$(INCDIR)/nc_win32.h'
+ else
+ INTERNALS_HDR='$(INCDIR)/nc_mingw.h'
+ EXP_WIN32_DRIVER=0
+ fi
+ ;;
+(*)
+ EXP_WIN32_DRIVER=0
+ INTERNALS_HDR=
+ ;;
+esac
+
+###############################################################################
+
+### use option --disable-echo to suppress full display compiling commands
+
+echo "$as_me:16004: checking if you want to see long compiling messages" >&5
+echo $ECHO_N "checking if you want to see long compiling messages... $ECHO_C" >&6
+
+# Check whether --enable-echo or --disable-echo was given.
+if test "${enable_echo+set}" = set; then
+ enableval="$enable_echo"
+ test "$enableval" != no && enableval=yes
+ if test "$enableval" != "yes" ; then
+
+ ECHO_LT='--silent'
+ ECHO_LD='@echo linking $@;'
+ RULE_CC='@echo compiling $<'
+ SHOW_CC='@echo compiling $@'
+ ECHO_CC='@'
+
+ else
+
+ ECHO_LT=''
+ ECHO_LD=''
+ RULE_CC=''
+ SHOW_CC=''
+ ECHO_CC=''
+
+ fi
+else
+ enableval=yes
+
+ ECHO_LT=''
+ ECHO_LD=''
+ RULE_CC=''
+ SHOW_CC=''
+ ECHO_CC=''
+
+fi;
+echo "$as_me:16038: result: $enableval" >&5
+echo "${ECHO_T}$enableval" >&6
+
+if test "x$enable_echo" = xyes; then
+ ECHO_LINK=
+else
+ ECHO_LINK='@ echo linking $@ ... ;'
+ test -n "$LIBTOOL" && LIBTOOL="$LIBTOOL --silent"
+ test -n "$LIBTOOL_CXX" && LIBTOOL_CXX="$LIBTOOL_CXX --silent"
+fi
+
+# --disable-stripping is used for debugging
+
+echo "$as_me:16051: checking if you want to install stripped executables" >&5
+echo $ECHO_N "checking if you want to install stripped executables... $ECHO_C" >&6
+
+# Check whether --enable-stripping or --disable-stripping was given.
+if test "${enable_stripping+set}" = set; then
+ enableval="$enable_stripping"
+ test "$enableval" != no && enableval=yes
+ if test "$enableval" != "yes" ; then
+ with_stripping=no
+ else
+ with_stripping=yes
+ fi
+else
+ enableval=yes
+ with_stripping=yes
+
+fi;
+echo "$as_me:16068: result: $with_stripping" >&5
+echo "${ECHO_T}$with_stripping" >&6
+
+if test "$with_stripping" = yes
+then
+ INSTALL_OPT_S="-s"
+else
+ INSTALL_OPT_S=
+fi
+
+: ${INSTALL:=install}
+echo "$as_me:16079: checking if install accepts -p option" >&5
+echo $ECHO_N "checking if install accepts -p option... $ECHO_C" >&6
+if test "${cf_cv_install_p+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+ rm -rf conftest*
+ date >conftest.in
+ mkdir conftest.out
+ sleep 3
+ if $INSTALL -p conftest.in conftest.out 2>/dev/null
+ then
+ if test -f conftest.out/conftest.in
+ then
+ test conftest.in -nt conftest.out/conftest.in 2>conftest.err && \
+ test conftest.out/conftest.in -nt conftest.in 2>conftest.err
+ if test -s conftest.err
+ then
+ cf_cv_install_p=no
+ else
+ cf_cv_install_p=yes
+ fi
+ else
+ cf_cv_install_p=no
+ fi
+ else
+ cf_cv_install_p=no
+ fi
+ rm -rf conftest*
+
+fi
+echo "$as_me:16110: result: $cf_cv_install_p" >&5
+echo "${ECHO_T}$cf_cv_install_p" >&6
+
+echo "$as_me:16113: checking if install needs to be told about ownership" >&5
+echo $ECHO_N "checking if install needs to be told about ownership... $ECHO_C" >&6
+case `$ac_config_guess` in
+(*minix)
+ with_install_o=yes
+ ;;
+(*)
+ with_install_o=no
+ ;;
+esac
+
+echo "$as_me:16124: result: $with_install_o" >&5
+echo "${ECHO_T}$with_install_o" >&6
+if test "x$with_install_o" = xyes
+then
+ INSTALL_OPT_O=`id root|sed -e 's/uid=[0-9]*(/ -o /' -e 's/gid=[0-9]*(/ -g /' -e 's/ [^=[:space:]][^=[:space:]]*=.*/ /' -e 's/)//g'`
+else
+ INSTALL_OPT_O=
+fi
+
+# If we're avoiding relinking of shared libraries during install, that is to