+LIBS="$cf_save_LIBS_$1"
+CFLAGS="$cf_save_CFLAGS_$1"
+CPPFLAGS="$cf_save_CPPFLAGS_$1"
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_RPATH_HACK version: 13 updated: 2021/01/03 18:30:50
+dnl -------------
+AC_DEFUN([CF_RPATH_HACK],
+[AC_REQUIRE([AC_PROG_FGREP])dnl
+AC_REQUIRE([CF_LD_RPATH_OPT])dnl
+
+AC_MSG_CHECKING(for updated LDFLAGS)
+if test -n "$LD_RPATH_OPT" ; then
+ AC_MSG_RESULT(maybe)
+
+ AC_CHECK_PROGS(cf_ldd_prog,ldd,no)
+ cf_rpath_list="/usr/lib /lib"
+ if test "$cf_ldd_prog" != no
+ then
+ cf_rpath_oops=
+
+AC_TRY_LINK([#include <stdio.h>],
+ [printf("Hello");],
+ [cf_rpath_oops=`"$cf_ldd_prog" "conftest$ac_exeext" | ${FGREP-fgrep} ' not found' | sed -e 's% =>.*$%%' |sort | uniq`
+ cf_rpath_list=`"$cf_ldd_prog" "conftest$ac_exeext" | ${FGREP-fgrep} / | sed -e 's%^.*[[ ]]/%/%' -e 's%/[[^/]][[^/]]*$%%' |sort | uniq`])
+
+ # If we passed the link-test, but get a "not found" on a given library,
+ # this could be due to inept reconfiguration of gcc to make it only
+ # partly honor /usr/local/lib (or whatever). Sometimes this behavior
+ # is intentional, e.g., installing gcc in /usr/bin and suppressing the
+ # /usr/local libraries.
+ if test -n "$cf_rpath_oops"
+ then
+ for cf_rpath_src in $cf_rpath_oops
+ do
+ for cf_rpath_dir in \
+ /usr/local \
+ /usr/pkg \
+ /opt/sfw
+ do
+ if test -f "$cf_rpath_dir/lib/$cf_rpath_src"
+ then
+ CF_VERBOSE(...adding -L$cf_rpath_dir/lib to LDFLAGS for $cf_rpath_src)
+ LDFLAGS="$LDFLAGS -L$cf_rpath_dir/lib"
+ break
+ fi
+ done
+ done
+ fi
+ fi
+
+ CF_VERBOSE(...checking EXTRA_LDFLAGS $EXTRA_LDFLAGS)
+
+ CF_RPATH_HACK_2(LDFLAGS)
+ CF_RPATH_HACK_2(LIBS)
+
+ CF_VERBOSE(...checked EXTRA_LDFLAGS $EXTRA_LDFLAGS)
+else
+ AC_MSG_RESULT(no)
+fi
+AC_SUBST(EXTRA_LDFLAGS)
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_RPATH_HACK_2 version: 8 updated: 2021/01/01 13:31:04
+dnl ---------------
+dnl Do one set of substitutions for CF_RPATH_HACK, adding an rpath option to
+dnl EXTRA_LDFLAGS for each -L option found.
+dnl
+dnl $cf_rpath_list contains a list of directories to ignore.
+dnl
+dnl $1 = variable name to update. The LDFLAGS variable should be the only one,
+dnl but LIBS often has misplaced -L options.
+AC_DEFUN([CF_RPATH_HACK_2],
+[
+CF_VERBOSE(...checking $1 [$]$1)
+
+cf_rpath_dst=
+for cf_rpath_src in [$]$1
+do
+ case "$cf_rpath_src" in
+ (-L*)
+
+ # check if this refers to a directory which we will ignore
+ cf_rpath_skip=no
+ if test -n "$cf_rpath_list"
+ then
+ for cf_rpath_item in $cf_rpath_list
+ do
+ if test "x$cf_rpath_src" = "x-L$cf_rpath_item"
+ then
+ cf_rpath_skip=yes
+ break
+ fi
+ done
+ fi
+
+ if test "$cf_rpath_skip" = no
+ then
+ # transform the option
+ if test "$LD_RPATH_OPT" = "-R " ; then
+ cf_rpath_tmp=`echo "$cf_rpath_src" |sed -e "s%-L%-R %"`
+ else
+ cf_rpath_tmp=`echo "$cf_rpath_src" |sed -e "s%-L%$LD_RPATH_OPT%"`
+ fi
+
+ # if we have not already added this, add it now
+ cf_rpath_tst=`echo "$EXTRA_LDFLAGS" | sed -e "s%$cf_rpath_tmp %%"`
+ if test "x$cf_rpath_tst" = "x$EXTRA_LDFLAGS"
+ then
+ CF_VERBOSE(...Filter $cf_rpath_src ->$cf_rpath_tmp)
+ EXTRA_LDFLAGS="$cf_rpath_tmp $EXTRA_LDFLAGS"
+ fi
+ fi
+ ;;
+ esac
+ cf_rpath_dst="$cf_rpath_dst $cf_rpath_src"
+done
+$1=$cf_rpath_dst
+
+CF_VERBOSE(...checked $1 [$]$1)
+AC_SUBST(EXTRA_LDFLAGS)
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_SAVE_XTRA_FLAGS version: 1 updated: 2020/01/11 16:46:44
+dnl ------------------
+dnl Use this macro to save CFLAGS/CPPFLAGS/LIBS before checks against X headers
+dnl and libraries which do not update those variables.
+dnl
+dnl $1 = name of current macro
+define([CF_SAVE_XTRA_FLAGS],
+[
+cf_save_LIBS_$1="$LIBS"
+cf_save_CFLAGS_$1="$CFLAGS"
+cf_save_CPPFLAGS_$1="$CPPFLAGS"
+LIBS="$LIBS ${X_PRE_LIBS} ${X_LIBS} ${X_EXTRA_LIBS}"
+for cf_X_CFLAGS in $X_CFLAGS
+do
+ case "x$cf_X_CFLAGS" in
+ x-[[IUD]]*)
+ CPPFLAGS="$CPPFLAGS $cf_X_CFLAGS"
+ ;;
+ *)
+ CFLAGS="$CFLAGS $cf_X_CFLAGS"
+ ;;
+ esac
+done
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_SIGWINCH version: 6 updated: 2021/01/01 13:31:04
+dnl -----------
+dnl Use this macro after CF_XOPEN_SOURCE, but do not require it (not all
+dnl programs need this test).
+dnl
+dnl This is really a Mac OS X 10.4.3 workaround. Defining _POSIX_C_SOURCE
+dnl forces SIGWINCH to be undefined (breaks xterm, ncurses). Oddly, the struct
+dnl winsize declaration is left alone - we may revisit this if Apple choose to
+dnl break that part of the interface as well.
+AC_DEFUN([CF_SIGWINCH],
+[
+AC_CACHE_CHECK(if SIGWINCH is defined,cf_cv_define_sigwinch,[
+ AC_TRY_COMPILE([
+#include <sys/types.h>
+#include <sys/signal.h>
+],[int x = SIGWINCH; (void)x],
+ [cf_cv_define_sigwinch=yes],
+ [AC_TRY_COMPILE([
+#undef _XOPEN_SOURCE
+#undef _POSIX_SOURCE
+#undef _POSIX_C_SOURCE
+#include <sys/types.h>
+#include <sys/signal.h>
+],[int x = SIGWINCH; (void)x],
+ [cf_cv_define_sigwinch=maybe],
+ [cf_cv_define_sigwinch=no])
+])
+])
+
+if test "$cf_cv_define_sigwinch" = maybe ; then
+AC_CACHE_CHECK(for actual SIGWINCH definition,cf_cv_fixup_sigwinch,[
+cf_cv_fixup_sigwinch=unknown
+cf_sigwinch=32
+while test "$cf_sigwinch" != 1
+do
+ AC_TRY_COMPILE([
+#undef _XOPEN_SOURCE
+#undef _POSIX_SOURCE
+#undef _POSIX_C_SOURCE
+#include <sys/types.h>
+#include <sys/signal.h>
+],[
+#if SIGWINCH != $cf_sigwinch
+make an error
+#endif
+int x = SIGWINCH; (void)x],
+ [cf_cv_fixup_sigwinch=$cf_sigwinch
+ break])
+
+cf_sigwinch="`expr "$cf_sigwinch" - 1`"
+done
+])
+
+ if test "$cf_cv_fixup_sigwinch" != unknown ; then
+ CPPFLAGS="$CPPFLAGS -DSIGWINCH=$cf_cv_fixup_sigwinch"
+ fi
+fi
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_SIG_ATOMIC_T version: 5 updated: 2020/03/10 18:53:47
+dnl ---------------
+dnl signal handler, but there are some gcc dependencies in that recommendation.
+dnl Try anyway.
+AC_DEFUN([CF_SIG_ATOMIC_T],
+[
+AC_MSG_CHECKING(for signal global datatype)
+AC_CACHE_VAL(cf_cv_sig_atomic_t,[
+ for cf_type in \
+ "volatile sig_atomic_t" \
+ "sig_atomic_t" \
+ "int"
+ do
+ AC_TRY_COMPILE([
+#include <sys/types.h>
+#include <signal.h>