X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=aclocal.m4;h=6d2f989e62361593efc320ba1cf8b3ea255e2f45;hp=530d06cb20738877cf0f97fbc787362da497e54f;hb=8f6d94b8d6211a2323caef53fa4c96c475ec9a62;hpb=32345daa97e69f66b554f02faef53cfd02739bdc

diff --git a/aclocal.m4 b/aclocal.m4
index 530d06cb..6d2f989e 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,5 +1,5 @@
 dnl***************************************************************************
-dnl Copyright (c) 1998-2017,2018 Free Software Foundation, Inc.              *
+dnl Copyright (c) 1998-2018,2019 Free Software Foundation, Inc.              *
 dnl                                                                          *
 dnl Permission is hereby granted, free of charge, to any person obtaining a  *
 dnl copy of this software and associated documentation files (the            *
@@ -28,7 +28,7 @@ dnl***************************************************************************
 dnl
 dnl Author: Thomas E. Dickey 1995-on
 dnl
-dnl $Id: aclocal.m4,v 1.841 2018/07/14 23:48:44 tom Exp $
+dnl $Id: aclocal.m4,v 1.862 2019/03/30 21:53:01 tom Exp $
 dnl Macros used in NCURSES auto-configuration script.
 dnl
 dnl These macros are maintained separately from NCURSES.  The copyright on
@@ -727,7 +727,7 @@ AC_SUBST(BUILD_EXEEXT)
 AC_SUBST(BUILD_OBJEXT)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CC_ENV_FLAGS version: 8 updated: 2017/09/23 08:50:24
+dnl CF_CC_ENV_FLAGS version: 9 updated: 2018/07/29 18:03:26
 dnl ---------------
 dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content
 dnl into CC.  This will not help with broken scripts that wrap the compiler
@@ -744,11 +744,28 @@ AC_DEFUN([CF_CC_ENV_FLAGS],
 # This should have been defined by AC_PROG_CC
 : ${CC:=cc}
 
+AC_MSG_CHECKING(\$CFLAGS variable)
+case "x$CFLAGS" in
+(*-[[IUD]]*)
+	AC_MSG_RESULT(broken)
+	AC_MSG_WARN(your environment uses the CFLAGS variable to hold CPPFLAGS options)
+	cf_flags="$CFLAGS"
+	CFLAGS=
+	for cf_arg in $cf_flags
+	do
+		CF_ADD_CFLAGS($cf_arg)
+	done
+	;;
+(*)
+	AC_MSG_RESULT(ok)
+	;;
+esac
+
 AC_MSG_CHECKING(\$CC variable)
 case "$CC" in
 (*[[\ \	]]-*)
 	AC_MSG_RESULT(broken)
-	AC_MSG_WARN(your environment misuses the CC variable to hold CFLAGS/CPPFLAGS options)
+	AC_MSG_WARN(your environment uses the CC variable to hold CFLAGS/CPPFLAGS options)
 	# humor him...
 	cf_prog=`echo "$CC" | sed -e 's/	/ /g' -e 's/[[ ]]* / /g' -e 's/[[ ]]*[[ ]]-[[^ ]].*//'`
 	cf_flags=`echo "$CC" | ${AWK:-awk} -v prog="$cf_prog" '{ printf("%s", [substr]([$]0,1+length(prog))); }'`
@@ -1887,6 +1904,49 @@ AC_DEFUN([CF_FIXUP_ADAFLAGS],[
 	AC_MSG_RESULT($ADAFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_FOPEN_BIN_R version: 1 updated: 2019/03/30 17:52:21
+dnl --------------
+dnl Check if fopen works when the "b" (binary) flag is added to the mode
+dnl parameter.  POSIX ignores the "b", which c89 specified.  Some very old
+dnl systems do not accept it.
+AC_DEFUN([CF_FOPEN_BIN_R],[
+AC_CACHE_CHECK(if fopen accepts explicit binary mode,cf_cv_fopen_bin_r,[
+	AC_TRY_RUN([
+#include <stdio.h>
+int main(void) {
+	FILE *fp = fopen("conftest.tmp", "wb");
+	int rc = 0;
+	if (fp != 0) {
+		int p, q;
+		for (p = 0; p < 256; ++p) {
+			fputc(p, fp);
+		}
+		fclose(fp);
+		fp = fopen("conftest.tmp", "rb");
+		if (fp != 0) {
+			for (p = 0; p < 256; ++p) {
+				q = fgetc(fp);
+				if (q != p) {
+					rc = 1;
+					break;
+				}
+			}
+		} else {
+			rc = 1;
+		}
+	} else {
+		rc = 1;
+	}
+	${cf_cv_main_return:-return} (rc);
+}
+],
+		[cf_cv_fopen_bin_r=yes],
+		[cf_cv_fopen_bin_r=no],
+		[cf_cv_fopen_bin_r=unknown])
+])
+test "x$cf_cv_fopen_bin_r" != xno && AC_DEFINE(USE_FOPEN_BIN_R)
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_FORGET_TOOL version: 1 updated: 2013/04/06 18:03:09
 dnl --------------
 dnl Forget that we saw the given tool.
@@ -2703,7 +2763,7 @@ case $cf_gnat_version in
 esac
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_GNU_SOURCE version: 9 updated: 2018/06/20 20:23:13
+dnl CF_GNU_SOURCE version: 10 updated: 2018/12/10 20:09:41
 dnl -------------
 dnl Check if we must define _GNU_SOURCE to get a reasonable value for
 dnl _XOPEN_SOURCE, upon which many POSIX definitions depend.  This is a defect
@@ -2722,6 +2782,8 @@ AC_CACHE_CHECK(if this is the GNU C library,cf_cv_gnu_library,[
 AC_TRY_COMPILE([#include <sys/types.h>],[
 	#if __GLIBC__ > 0 && __GLIBC_MINOR__ >= 0
 		return 0;
+	#elif __NEWLIB__ > 0 && __NEWLIB_MINOR__ >= 0
+		return 0;
 	#else
 	#	error not GNU C library
 	#endif],
@@ -2732,13 +2794,16 @@ AC_TRY_COMPILE([#include <sys/types.h>],[
 if test x$cf_cv_gnu_library = xyes; then
 
 	# With glibc 2.19 (13 years after this check was begun), _DEFAULT_SOURCE
-	# was changed to help a little...
+	# was changed to help a little.  newlib incorporated the change about 4
+	# years later.
 	AC_CACHE_CHECK(if _DEFAULT_SOURCE can be used as a basis,cf_cv_gnu_library_219,[
 		cf_save="$CPPFLAGS"
 		CF_APPEND_TEXT(CPPFLAGS,-D_DEFAULT_SOURCE)
 		AC_TRY_COMPILE([#include <sys/types.h>],[
 			#if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 19) || (__GLIBC__ > 2)
 				return 0;
+			#elif (__NEWLIB__ == 2 && __NEWLIB_MINOR__ >= 4) || (__GLIBC__ > 3)
+				return 0;
 			#else
 			#	error GNU C library __GLIBC__.__GLIBC_MINOR__ is too old
 			#endif],
@@ -3214,12 +3279,13 @@ CPPFLAGS="-I. $CPPFLAGS"
 AC_SUBST(CPPFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_INSTALL_OPTS version: 1 updated: 2014/07/21 18:19:51
+dnl CF_INSTALL_OPTS version: 2 updated: 2018/08/18 12:19:21
 dnl ---------------
 dnl prompt for/fill-in useful install-program options
 AC_DEFUN([CF_INSTALL_OPTS],
 [
 CF_INSTALL_OPT_S
+CF_INSTALL_OPT_P
 CF_INSTALL_OPT_O
 ])dnl
 dnl ---------------------------------------------------------------------------
@@ -3250,7 +3316,42 @@ fi
 AC_SUBST(INSTALL_OPT_O)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_INSTALL_OPT_S version: 1 updated: 2014/07/21 18:19:51
+dnl CF_INSTALL_OPT_P version: 1 updated: 2018/08/18 12:19:21
+dnl ----------------
+dnl Some install-programs accept a "-p" option to preserve file modification
+dnl timestamps.  That can be useful as an install option, as well as a way to
+dnl avoid the need for ranlib after copying a static archive.
+AC_DEFUN([CF_INSTALL_OPT_P],
+[
+: ${INSTALL:=install}
+AC_CACHE_CHECK(if install accepts -p option, cf_cv_install_p,[
+	rm -rf conftest*
+	date >conftest.in
+	mkdir conftest.out
+	sleep 3
+	if $INSTALL -p conftest.in conftest.out 2>/dev/null
+	then
+		if test -f conftest.out/conftest.in
+		then
+			test conftest.in -nt conftest.out/conftest.in 2>conftest.err && \
+			test conftest.out/conftest.in -nt conftest.in 2>conftest.err
+			if test -s conftest.err
+			then
+				cf_cv_install_p=no
+			else
+				cf_cv_install_p=yes
+			fi
+		else
+			cf_cv_install_p=no
+		fi
+	else
+		cf_cv_install_p=no
+	fi
+	rm -rf conftest*
+])
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_INSTALL_OPT_S version: 2 updated: 2018/08/18 12:19:21
 dnl ----------------
 dnl By default, we should strip executables which are installed, but leave the
 dnl ability to suppress that for unit-testing.
@@ -3258,7 +3359,7 @@ AC_DEFUN([CF_INSTALL_OPT_S],
 [
 AC_MSG_CHECKING(if you want to install stripped executables)
 CF_ARG_DISABLE(stripping,
-	[  --disable-stripping     do not strip installed executables],
+	[  --disable-stripping     do not strip (debug info) installed executables],
 	[with_stripping=no],
 	[with_stripping=yes])
 AC_MSG_RESULT($with_stripping)
@@ -3476,7 +3577,7 @@ AC_SUBST(LDFLAGS_STATIC)
 AC_SUBST(LDFLAGS_SHARED)
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_LD_RPATH_OPT version: 7 updated: 2016/02/20 18:01:19
+dnl CF_LD_RPATH_OPT version: 8 updated: 2018/08/18 16:36:35
 dnl ---------------
 dnl For the given system and compiler, find the compiler flags to pass to the
 dnl loader to use the "rpath" feature.
@@ -3485,49 +3586,52 @@ AC_DEFUN([CF_LD_RPATH_OPT],
 AC_REQUIRE([CF_CHECK_CACHE])
 
 LD_RPATH_OPT=
-AC_MSG_CHECKING(for an rpath option)
-case $cf_cv_system_name in
-(irix*)
-	if test "$GCC" = yes; then
+if test "x$cf_cv_enable_rpath" != xno
+then
+	AC_MSG_CHECKING(for an rpath option)
+	case $cf_cv_system_name in
+	(irix*)
+		if test "$GCC" = yes; then
+			LD_RPATH_OPT="-Wl,-rpath,"
+		else
+			LD_RPATH_OPT="-rpath "
+		fi
+		;;
+	(linux*|gnu*|k*bsd*-gnu|freebsd*)
 		LD_RPATH_OPT="-Wl,-rpath,"
-	else
+		;;
+	(openbsd[[2-9]].*|mirbsd*)
+		LD_RPATH_OPT="-Wl,-rpath,"
+		;;
+	(dragonfly*)
 		LD_RPATH_OPT="-rpath "
-	fi
-	;;
-(linux*|gnu*|k*bsd*-gnu|freebsd*)
-	LD_RPATH_OPT="-Wl,-rpath,"
-	;;
-(openbsd[[2-9]].*|mirbsd*)
-	LD_RPATH_OPT="-Wl,-rpath,"
-	;;
-(dragonfly*)
-	LD_RPATH_OPT="-rpath "
-	;;
-(netbsd*)
-	LD_RPATH_OPT="-Wl,-rpath,"
-	;;
-(osf*|mls+*)
-	LD_RPATH_OPT="-rpath "
-	;;
-(solaris2*)
-	LD_RPATH_OPT="-R"
-	;;
-(*)
-	;;
-esac
-AC_MSG_RESULT($LD_RPATH_OPT)
+		;;
+	(netbsd*)
+		LD_RPATH_OPT="-Wl,-rpath,"
+		;;
+	(osf*|mls+*)
+		LD_RPATH_OPT="-rpath "
+		;;
+	(solaris2*)
+		LD_RPATH_OPT="-R"
+		;;
+	(*)
+		;;
+	esac
+	AC_MSG_RESULT($LD_RPATH_OPT)
 
-case "x$LD_RPATH_OPT" in
-(x-R*)
-	AC_MSG_CHECKING(if we need a space after rpath option)
-	cf_save_LIBS="$LIBS"
-	CF_ADD_LIBS(${LD_RPATH_OPT}$libdir)
-	AC_TRY_LINK(, , cf_rpath_space=no, cf_rpath_space=yes)
-	LIBS="$cf_save_LIBS"
-	AC_MSG_RESULT($cf_rpath_space)
-	test "$cf_rpath_space" = yes && LD_RPATH_OPT="$LD_RPATH_OPT "
-	;;
-esac
+	case "x$LD_RPATH_OPT" in
+	(x-R*)
+		AC_MSG_CHECKING(if we need a space after rpath option)
+		cf_save_LIBS="$LIBS"
+		CF_ADD_LIBS(${LD_RPATH_OPT}$libdir)
+		AC_TRY_LINK(, , cf_rpath_space=no, cf_rpath_space=yes)
+		LIBS="$cf_save_LIBS"
+		AC_MSG_RESULT($cf_rpath_space)
+		test "$cf_rpath_space" = yes && LD_RPATH_OPT="$LD_RPATH_OPT "
+		;;
+	esac
+fi
 ])dnl
 dnl ---------------------------------------------------------------------------
 dnl CF_LIBRARY_PATH version: 10 updated: 2015/04/15 19:08:48
@@ -3592,7 +3696,7 @@ ifelse($1,,,[$1=$LIB_PREFIX])
 	AC_SUBST(LIB_PREFIX)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LIB_RULES version: 87 updated: 2017/07/26 17:08:35
+dnl CF_LIB_RULES version: 88 updated: 2018/08/18 12:19:21
 dnl ------------
 dnl Append definitions and rules for the given models to the subdirectory
 dnl Makefiles, and the recursion rule for the top-level Makefile.  If the
@@ -3928,6 +4032,7 @@ CF_EOF
 				ShlibVer=$cf_cv_shlib_version \
 				ShlibVerInfix=$cf_cv_shlib_version_infix \
 				ReLink=${cf_cv_do_relink:-no} \
+				ReRanlib=${cf_cv_do_reranlib:-yes} \
 				DoLinks=$cf_cv_do_symlinks \
 				rmSoLocs=$cf_cv_rm_so_locs \
 				ldconfig="$LDCONFIG" \
@@ -5370,7 +5475,7 @@ fi
 AC_SUBST(PKG_CONFIG)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_POSIX_C_SOURCE version: 10 updated: 2018/06/20 20:23:13
+dnl CF_POSIX_C_SOURCE version: 11 updated: 2018/12/31 20:46:17
 dnl -----------------
 dnl Define _POSIX_C_SOURCE to the given level, and _POSIX_SOURCE if needed.
 dnl
@@ -5385,7 +5490,10 @@ dnl
 dnl Parameters:
 dnl	$1 is the nominal value for _POSIX_C_SOURCE
 AC_DEFUN([CF_POSIX_C_SOURCE],
-[
+[AC_REQUIRE([CF_POSIX_VISIBLE])dnl
+
+if test "$cf_cv_posix_visible" = no; then
+
 cf_POSIX_C_SOURCE=ifelse([$1],,199506L,[$1])
 
 cf_save_CFLAGS="$CFLAGS"
@@ -5442,6 +5550,35 @@ if test "$cf_cv_posix_c_source" != no ; then
 	CF_ADD_CFLAGS($cf_cv_posix_c_source)
 fi
 
+fi # cf_cv_posix_visible
+
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_POSIX_VISIBLE version: 1 updated: 2018/12/31 20:46:17
+dnl ----------------
+dnl POSIX documents test-macros which an application may set before any system
+dnl headers are included to make features available.
+dnl
+dnl Some BSD platforms (originally FreeBSD, but copied by a few others)
+dnl diverged from POSIX in 2002 by setting symbols which make all of the most
+dnl recent features visible in the system header files unless the application
+dnl overrides the corresponding test-macros.  Doing that introduces portability
+dnl problems.
+dnl
+dnl This macro makes a special check for the symbols used for this, to avoid a
+dnl conflicting definition.
+AC_DEFUN([CF_POSIX_VISIBLE],
+[
+AC_CACHE_CHECK(if the POSIX test-macros are already defined,cf_cv_posix_visible,[
+AC_TRY_COMPILE([#include <stdio.h>],[
+#if defined(__POSIX_VISIBLE) && ((__POSIX_VISIBLE - 0L) > 0) \
+	&& defined(__XSI_VISIBLE) && ((__XSI_VISIBLE - 0L) > 0) \
+	&& defined(__BSD_VISIBLE) && ((__BSD_VISIBLE - 0L) > 0) \
+	&& defined(__ISO_C_VISIBLE) && ((__ISO_C_VISIBLE - 0L) > 0)
+#error conflicting symbols found
+#endif
+],[cf_cv_posix_visible=no],[cf_cv_posix_visible=yes])
+])
 ])dnl
 dnl ---------------------------------------------------------------------------
 dnl CF_PREDEFINE version: 2 updated: 2010/05/26 16:44:57
@@ -5586,7 +5723,7 @@ AC_DEFUN([CF_PROG_EGREP],
 	test -z "$EGREP" && AC_MSG_ERROR(No egrep program found)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PROG_GNAT version: 6 updated: 2018/01/16 16:45:49
+dnl CF_PROG_GNAT version: 8 updated: 2018/11/10 19:47:04
 dnl ------------
 dnl Check for gnatmake, ensure that it is complete.
 AC_DEFUN([CF_PROG_GNAT],[
@@ -5608,7 +5745,20 @@ else
 			for cf_gprconfig in Ada C
 			do
 				AC_MSG_CHECKING(for gprconfig name for $cf_gprconfig)
-				cf_gprconfig_value=`echo s| gprconfig --config=$cf_gprconfig 2>&AC_FD_CC | ${AWK:-awk} '/^\*/{print [$]3;}' | head -n 1`
+				if test $cf_gprconfig = C
+				then
+					for cf_gprconfig_param in \
+						$cf_gprconfig,,,,GNATGCC \
+						$cf_gprconfig,,,,GCC \
+						$cf_gprconfig
+					do
+						cf_gprconfig_value=`echo s| gprconfig --config=$cf_gprconfig_param 2>&AC_FD_CC | ${AWK:-awk} '/^\*/{print [$]3;}' | head -n 1`
+						test -n "$cf_gprconfig_value" && break
+					done
+				else
+					cf_gprconfig_param=$cf_gprconfig
+					cf_gprconfig_value=`echo s| gprconfig --config=$cf_gprconfig_param 2>&AC_FD_CC | ${AWK:-awk} '/^\*/{print [$]3;}' | head -n 1`
+				fi
 				if test -n "$cf_gprconfig_value"
 				then
 					eval cf_ada_config_[$]cf_gprconfig=[$]cf_gprconfig_value
@@ -5953,7 +6103,7 @@ CF_VERBOSE(...checked $1 [$]$1)
 AC_SUBST(EXTRA_LDFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SHARED_OPTS version: 92 updated: 2017/12/30 17:26:05
+dnl CF_SHARED_OPTS version: 93 updated: 2018/08/18 16:36:35
 dnl --------------
 dnl --------------
 dnl Attempt to determine the appropriate CC/LD options for creating a shared
@@ -5981,6 +6131,7 @@ dnl Some loaders leave 'so_locations' lying around.  It's nice to clean up.
 AC_DEFUN([CF_SHARED_OPTS],
 [
 	AC_REQUIRE([CF_LD_RPATH_OPT])
+
 	RM_SHARED_OPTS=
 	LOCAL_LDFLAGS=
 	LOCAL_LDFLAGS2=
@@ -6168,7 +6319,7 @@ CF_EOF
 		cf_cv_rm_so_locs=yes
 		;;
 	(linux*|gnu*|k*bsd*-gnu)
-		if test "$DFT_LWR_MODEL" = "shared" ; then
+		if test "$DFT_LWR_MODEL" = "shared" && test -n "$LD_RPATH_OPT" ; then
 			LOCAL_LDFLAGS="${LD_RPATH_OPT}\$(LOCAL_LIBDIR)"
 			LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
 		fi
@@ -6206,7 +6357,7 @@ CF_EOF
 		chmod +x mk_shared_lib.sh
 		;;
 	(openbsd[[2-9]].*|mirbsd*)
-		if test "$DFT_LWR_MODEL" = "shared" ; then
+		if test "$DFT_LWR_MODEL" = "shared" && test -n "$LD_RPATH_OPT" ; then
 			LOCAL_LDFLAGS="${LD_RPATH_OPT}\$(LOCAL_LIBDIR)"
 			LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
 		fi
@@ -6262,7 +6413,7 @@ CF_EOF
 			;;
 		esac
 		MK_SHARED_LIB="${MK_SHARED_LIB}"' -o $[@]'
-		if test "$DFT_LWR_MODEL" = "shared" ; then
+		if test "$DFT_LWR_MODEL" = "shared" && test -n "$LD_RPATH_OPT" ; then
 			LOCAL_LDFLAGS="${LD_RPATH_OPT}\$(LOCAL_LIBDIR)"
 			LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
 		fi
@@ -7115,10 +7266,11 @@ if test "$cf_cv_utf8_lib" = "add-on" ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_VA_COPY version: 3 updated: 2012/10/06 11:17:15
+dnl CF_VA_COPY version: 6 updated: 2018/12/04 18:14:25
 dnl ----------
-dnl check for va_copy, part of stdarg.h
+dnl check for va_copy, part of stdarg.h starting with ISO C 1999.
 dnl Also, workaround for glibc's __va_copy, by checking for both.
+dnl Finally, try to accommodate pre-ISO C 1999 headers.
 AC_DEFUN([CF_VA_COPY],[
 AC_CACHE_CHECK(for va_copy, cf_cv_have_va_copy,[
 AC_TRY_LINK([
@@ -7130,7 +7282,10 @@ AC_TRY_LINK([
 	cf_cv_have_va_copy=yes,
 	cf_cv_have_va_copy=no)])
 
-test "$cf_cv_have_va_copy" = yes && AC_DEFINE(HAVE_VA_COPY,1,[Define to 1 if we have va_copy])
+if test "$cf_cv_have_va_copy" = yes;
+then
+	AC_DEFINE(HAVE_VA_COPY,1,[Define to 1 if we have va_copy])
+else # !cf_cv_have_va_copy
 
 AC_CACHE_CHECK(for __va_copy, cf_cv_have___va_copy,[
 AC_TRY_LINK([
@@ -7142,7 +7297,58 @@ AC_TRY_LINK([
 	cf_cv_have___va_copy=yes,
 	cf_cv_have___va_copy=no)])
 
-test "$cf_cv_have___va_copy" = yes && AC_DEFINE(HAVE___VA_COPY,1,[Define to 1 if we have __va_copy])
+if test "$cf_cv_have___va_copy" = yes
+then
+	AC_DEFINE(HAVE___VA_COPY,1,[Define to 1 if we have __va_copy])
+else # !cf_cv_have___va_copy
+
+AC_CACHE_CHECK(for __builtin_va_copy, cf_cv_have___builtin_va_copy,[
+AC_TRY_LINK([
+#include <stdarg.h>
+],[
+	static va_list dst;
+	static va_list src;
+	__builtin_va_copy(dst, src)],
+	cf_cv_have___builtin_va_copy=yes,
+	cf_cv_have___builtin_va_copy=no)])
+
+test "$cf_cv_have___builtin_va_copy" = yes &&
+	AC_DEFINE(HAVE___BUILTIN_VA_COPY,1,[Define to 1 if we have __builtin_va_copy])
+
+fi # cf_cv_have___va_copy
+
+fi # cf_cv_have_va_copy
+
+case "${cf_cv_have_va_copy}${cf_cv_have___va_copy}${cf_cv_have___builtin_va_copy}" in
+(*yes*)
+	;;
+
+(*)
+	AC_CACHE_CHECK(if we can simply copy va_list, cf_cv_pointer_va_list,[
+AC_TRY_LINK([
+#include <stdarg.h>
+],[
+	va_list dst;
+	va_list src;
+	dst = src],
+	cf_cv_pointer_va_list=yes,
+	cf_cv_pointer_va_list=no)])
+
+	if test "$cf_cv_pointer_va_list" = no
+	then
+		AC_CACHE_CHECK(if we can copy va_list indirectly, cf_cv_array_va_list,[
+AC_TRY_LINK([
+#include <stdarg.h>
+],[
+	va_list dst;
+	va_list src;
+	*dst = *src],
+			cf_cv_array_va_list=yes,
+			cf_cv_array_va_list=no)])
+		test "$cf_cv_array_va_list" = yes && AC_DEFINE(ARRAY_VA_LIST,1,[Define to 1 if we can copy va_list indirectly])
+	fi
+	;;
+esac
 ])
 dnl ---------------------------------------------------------------------------
 dnl CF_VERBOSE version: 3 updated: 2007/07/29 09:55:12
@@ -7389,11 +7595,12 @@ AC_SUBST(ADA_OBJECTS)
 AC_MSG_RESULT($ADA_OBJECTS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_ADA_SHAREDLIB version: 4 updated: 2014/05/31 21:08:37
+dnl CF_WITH_ADA_SHAREDLIB version: 5 updated: 2018/07/21 19:10:35
 dnl ---------------------
 dnl Command-line option to specify if an Ada95 shared-library should be built,
 dnl and optionally what its soname should be.
 AC_DEFUN([CF_WITH_ADA_SHAREDLIB],[
+AC_REQUIRE([CF_GNAT_PROJECTS])
 AC_MSG_CHECKING(if an Ada95 shared-library should be built)
 AC_ARG_WITH(ada-sharedlib,
 	[  --with-ada-sharedlib=soname build shared-library (requires GNAT projects)],
@@ -7401,6 +7608,15 @@ AC_ARG_WITH(ada-sharedlib,
 	[with_ada_sharedlib=no])
 AC_MSG_RESULT($with_ada_sharedlib)
 
+if test "x$with_ada_sharedlib" != xno
+then
+	if test "x$cf_gnat_projects" != xyes
+	then
+		AC_MSG_WARN(disabling shared-library since GNAT projects are not supported)
+		with_ada_sharedlib=no
+	fi
+fi
+
 ADA_SHAREDLIB='lib$(LIB_NAME).so.1'
 MAKE_ADA_SHAREDLIB="#"
 
@@ -8022,7 +8238,7 @@ CF_NO_LEAKS_OPTION(valgrind,
 	[USE_VALGRIND])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_VERSIONED_SYMS version: 7 updated: 2015/10/24 20:50:26
+dnl CF_WITH_VERSIONED_SYMS version: 8 updated: 2018/10/20 20:24:34
 dnl ----------------------
 dnl Use this when building shared library with ELF, to markup symbols with the
 dnl version identifier from the given input file.  Generally that identifier is
@@ -8036,11 +8252,21 @@ AC_ARG_WITH(versioned-syms,
 	[  --with-versioned-syms=X markup versioned symbols using ld],
 	[with_versioned_syms=$withval],
 	[with_versioned_syms=no])
-if test "x$with_versioned_syms" = xyes
-then
+case "x$with_versioned_syms" in
+(xyes)
 	with_versioned_syms='${top_srcdir}/package/ifelse($1,,${PACKAGE},[$1]).map'
 	AC_SUBST(PACKAGE)
-fi
+	;;
+(xno)
+	;;
+(x/*)
+	test -f "$with_versioned_syms" || AC_MSG_ERROR(expected a filename: $with_versioned_syms)
+	;;
+(*)
+	test -f "$with_versioned_syms" || AC_MSG_ERROR(expected a filename: $with_versioned_syms)
+	with_versioned_syms=`pwd`/"$with_versioned_syms"
+	;;
+esac
 AC_MSG_RESULT($with_versioned_syms)
 
 RESULTING_SYMS=
@@ -8235,7 +8461,7 @@ fi
 AC_SUBST(no_x11_rgb)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_XOPEN_SOURCE version: 53 updated: 2018/06/16 18:58:58
+dnl CF_XOPEN_SOURCE version: 55 updated: 2018/12/31 20:46:17
 dnl ---------------
 dnl Try to get _XOPEN_SOURCE defined properly that we can use POSIX functions,
 dnl or adapt to the vendor's definitions to get equivalent functionality,
@@ -8246,6 +8472,9 @@ dnl	$1 is the nominal value for _XOPEN_SOURCE
 dnl	$2 is the nominal value for _POSIX_C_SOURCE
 AC_DEFUN([CF_XOPEN_SOURCE],[
 AC_REQUIRE([AC_CANONICAL_HOST])
+AC_REQUIRE([CF_POSIX_VISIBLE])
+
+if test "$cf_cv_posix_visible" = no; then
 
 cf_XOPEN_SOURCE=ifelse([$1],,500,[$1])
 cf_POSIX_C_SOURCE=ifelse([$2],,199506L,[$2])
@@ -8265,7 +8494,7 @@ case $host_os in
 	cf_xopen_source="-D_DARWIN_C_SOURCE"
 	cf_XOPEN_SOURCE=
 	;;
-(freebsd*|dragonfly*)
+(freebsd*|dragonfly*|midnightbsd*)
 	# 5.x headers associate
 	#	_XOPEN_SOURCE=600 with _POSIX_C_SOURCE=200112L
 	#	_XOPEN_SOURCE=500 with _POSIX_C_SOURCE=199506L
@@ -8360,4 +8589,5 @@ make an error
 		CF_TRY_XOPEN_SOURCE
 	fi
 fi
+fi # cf_cv_posix_visible
 ])