X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=aclocal.m4;h=d68cf7e6074ac782abcfa0c19af2972ed05548eb;hp=d763d70630b9f4d665e5a6b7132736c863be7686;hb=d60228973b72d3b457e3ec2653ea5b2cb38fc0c9;hpb=86b16a498d6d545c03dceff7636d269eb7eb1e8f

diff --git a/aclocal.m4 b/aclocal.m4
index d763d706..d68cf7e6 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,5 +1,5 @@
 dnl***************************************************************************
-dnl Copyright (c) 1998-2016,2017 Free Software Foundation, Inc.              *
+dnl Copyright (c) 1998-2017,2018 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            *
@@ -28,14 +28,14 @@ dnl***************************************************************************
 dnl
 dnl Author: Thomas E. Dickey 1995-on
 dnl
-dnl $Id: aclocal.m4,v 1.818 2017/12/02 23:46:25 tom Exp $
+dnl $Id: aclocal.m4,v 1.838 2018/06/16 23:07:10 tom Exp $
 dnl Macros used in NCURSES auto-configuration script.
 dnl
 dnl These macros are maintained separately from NCURSES.  The copyright on
 dnl this file applies to the aggregation of macros and does not affect use of
 dnl these macros in other applications.
 dnl
-dnl See http://invisible-island.net/autoconf/ for additional information.
+dnl See https://invisible-island.net/autoconf/ for additional information.
 dnl
 dnl ---------------------------------------------------------------------------
 dnl ---------------------------------------------------------------------------
@@ -635,7 +635,7 @@ if test "$cf_cv_type_of_bool" = unknown ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_BUILD_CC version: 7 updated: 2012/10/06 15:31:55
+dnl CF_BUILD_CC version: 8 updated: 2018/01/04 20:31:04
 dnl -----------
 dnl If we're cross-compiling, allow the user to override the tools and their
 dnl options.  The configure script is oriented toward identifying the host
@@ -660,7 +660,7 @@ if test "$cross_compiling" = yes ; then
 	AC_ARG_WITH(build-cc,
 		[  --with-build-cc=XXX     the build C compiler ($BUILD_CC)],
 		[BUILD_CC="$withval"],
-		[AC_CHECK_PROGS(BUILD_CC, gcc cc cl)])
+		[AC_CHECK_PROGS(BUILD_CC, [gcc clang c99 c89 cc cl],none)])
 	AC_MSG_CHECKING(for native build C compiler)
 	AC_MSG_RESULT($BUILD_CC)
 
@@ -2470,7 +2470,7 @@ AC_SUBST(cf_compile_generics)
 AC_SUBST(cf_generic_objects)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_GNAT_PROJECTS version: 8 updated: 2015/04/17 21:13:04
+dnl CF_GNAT_PROJECTS version: 9 updated: 2018/01/14 15:46:09
 dnl ----------------
 dnl GNAT projects are configured with ".gpr" project files.
 dnl GNAT libraries are a further development, using the project feature.
@@ -2492,10 +2492,12 @@ case $cf_gnat_version in
 	(cygwin*|msys*)
 		;;
 	(*)
-		mkdir conftest.src conftest.bin conftest.lib
-		cd conftest.src
 		rm -rf conftest* *~conftest*
-		cat >>library.gpr <<CF_EOF
+		if mkdir conftest.src conftest.bin conftest.lib
+		then
+			cd conftest.src
+			rm -rf conftest* *~conftest*
+			cat >>library.gpr <<CF_EOF
 project Library is
   Kind := External ("LIB_KIND");
   for Library_Name use "ConfTest";
@@ -2508,12 +2510,12 @@ project Library is
   for Source_Dirs use (Source_Dir);
 end Library;
 CF_EOF
-		cat >>confpackage.ads <<CF_EOF
+			cat >>confpackage.ads <<CF_EOF
 package ConfPackage is
    procedure conftest;
 end ConfPackage;
 CF_EOF
-		cat >>confpackage.adb <<CF_EOF
+			cat >>confpackage.adb <<CF_EOF
 with Text_IO;
 package body ConfPackage is
    procedure conftest is
@@ -2523,16 +2525,17 @@ package body ConfPackage is
    end conftest;
 end ConfPackage;
 CF_EOF
-		if ( $cf_ada_make $ADAFLAGS \
-				-Plibrary.gpr \
-				-XBUILD_DIR=`cd ../conftest.bin;pwd` \
-				-XLIBRARY_DIR=`cd ../conftest.lib;pwd` \
-				-XSOURCE_DIR=`pwd` \
-				-XSONAME=libConfTest.so.1 \
-				-XLIB_KIND=static 1>&AC_FD_CC 2>&1 ) ; then
-			cf_gnat_projects=yes
+			if ( $cf_ada_make $ADAFLAGS \
+					-Plibrary.gpr \
+					-XBUILD_DIR=`cd ../conftest.bin;pwd` \
+					-XLIBRARY_DIR=`cd ../conftest.lib;pwd` \
+					-XSOURCE_DIR=`pwd` \
+					-XSONAME=libConfTest.so.1 \
+					-XLIB_KIND=static 1>&AC_FD_CC 2>&1 ) ; then
+				cf_gnat_projects=yes
+			fi
+			cd ..
 		fi
-		cd ..
 		if test -f conftest.lib/confpackage.ali
 		then
 			cf_gnat_libraries=yes
@@ -2699,7 +2702,7 @@ case $cf_gnat_version in
 esac
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_GNU_SOURCE version: 7 updated: 2016/08/05 05:15:37
+dnl CF_GNU_SOURCE version: 8 updated: 2018/06/16 19:05:13
 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
@@ -2707,38 +2710,98 @@ dnl (or misfeature) of glibc2, which breaks portability of many applications,
 dnl since it is interwoven with GNU extensions.
 dnl
 dnl Well, yes we could work around it...
+dnl
+dnl Parameters:
+dnl	$1 is the nominal value for _XOPEN_SOURCE
 AC_DEFUN([CF_GNU_SOURCE],
 [
-AC_CACHE_CHECK(if we must define _GNU_SOURCE,cf_cv_gnu_source,[
+cf_gnu_xopen_source=ifelse($1,,500,$1)
+
+AC_CACHE_CHECK(if this is the GNU C library,cf_cv_gnu_library,[
 AC_TRY_COMPILE([#include <sys/types.h>],[
-#ifndef _XOPEN_SOURCE
-make an error
-#endif],
-	[cf_cv_gnu_source=no],
-	[cf_save="$CPPFLAGS"
-	 CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
-	 AC_TRY_COMPILE([#include <sys/types.h>],[
-#ifdef _XOPEN_SOURCE
-make an error
-#endif],
-	[cf_cv_gnu_source=no],
-	[cf_cv_gnu_source=yes])
-	CPPFLAGS="$cf_save"
-	])
+	#if __GLIBC__ > 0 && __GLIBC_MINOR__ >= 0
+		return 0;
+	#else
+	#	error not GNU C library
+	#endif],
+	[cf_cv_gnu_library=yes],
+	[cf_cv_gnu_library=no])
 ])
 
-if test "$cf_cv_gnu_source" = yes
-then
-AC_CACHE_CHECK(if we should also define _DEFAULT_SOURCE,cf_cv_default_source,[
-CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
-	AC_TRY_COMPILE([#include <sys/types.h>],[
-#ifdef _DEFAULT_SOURCE
-make an error
-#endif],
-		[cf_cv_default_source=no],
-		[cf_cv_default_source=yes])
+if test x$cf_cv_gnu_library = xyes; then
+
+	# With glibc 2.19 (13 years after this check was begun), _DEFAULT_SOURCE
+	# was changed to help a little...
+	AC_CACHE_CHECK(if _DEFAULT_SOURCE can be used as a basis,cf_cv_gnu_library_219,[
+		cf_save="$CPPFLAGS"
+		CPPFLAGS="$CPPFLAGS -D_DEFAULT_SOURCE"
+		AC_TRY_COMPILE([#include <sys/types.h>],[
+			#if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 19) || (__GLIBC__ > 2)
+				return 0;
+			#else
+			#	error GNU C library __GLIBC__.__GLIBC_MINOR__ is too old
+			#endif],
+			[cf_cv_gnu_library_219=yes],
+			[cf_cv_gnu_library_219=no])
+		CPPFLAGS="$cf_save"
 	])
-test "$cf_cv_default_source" = yes && CPPFLAGS="$CPPFLAGS -D_DEFAULT_SOURCE"
+
+	if test "x$cf_cv_gnu_library_219" = xyes; then
+		AC_CACHE_CHECK(if _XOPEN_SOURCE=$cf_gnu_xopen_source works with _DEFAULT_SOURCE,cf_cv_gnu_dftsrc_219,[
+			cf_save="$CPPFLAGS"
+			CPPFLAGS="$CPPFLAGS -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=$cf_gnu_xopen_source"
+			AC_TRY_COMPILE([
+				#include <limits.h>
+				#include <sys/types.h>
+				],[
+				#if (_XOPEN_SOURCE >= $cf_gnu_xopen_source) && (MB_LEN_MAX > 1)
+					return 0;
+				#else
+				#	error GNU C library is too old
+				#endif],
+				[cf_cv_gnu_dftsrc_219=yes],
+				[cf_cv_gnu_dftsrc_219=no])
+			])
+		test "x$cf_cv_gnu_dftsrc_219" = "xyes" || CPPFLAGS="$cf_save"
+	else
+		cf_cv_gnu_dftsrc_219=maybe
+	fi
+
+	if test "x$cf_cv_gnu_dftsrc_219" != xyes; then
+
+		AC_CACHE_CHECK(if we must define _GNU_SOURCE,cf_cv_gnu_source,[
+		AC_TRY_COMPILE([#include <sys/types.h>],[
+			#ifndef _XOPEN_SOURCE
+			#error	expected _XOPEN_SOURCE to be defined
+			#endif],
+			[cf_cv_gnu_source=no],
+			[cf_save="$CPPFLAGS"
+			 CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
+			 AC_TRY_COMPILE([#include <sys/types.h>],[
+				#ifdef _XOPEN_SOURCE
+				#error	expected _XOPEN_SOURCE to be undefined
+				#endif],
+				[cf_cv_gnu_source=no],
+				[cf_cv_gnu_source=yes])
+			CPPFLAGS="$cf_save"
+			])
+		])
+
+		if test "$cf_cv_gnu_source" = yes
+		then
+		AC_CACHE_CHECK(if we should also define _DEFAULT_SOURCE,cf_cv_default_source,[
+			CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
+			AC_TRY_COMPILE([#include <sys/types.h>],[
+				#ifdef _DEFAULT_SOURCE
+				#error	expected _DEFAULT_SOURCE to be undefined
+				#endif],
+				[cf_cv_default_source=no],
+				[cf_cv_default_source=yes])
+			])
+			test "$cf_cv_default_source" = yes && CPPFLAGS="$CPPFLAGS -D_DEFAULT_SOURCE"
+		fi
+	fi
+
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
@@ -3147,6 +3210,64 @@ CPPFLAGS="-I. $CPPFLAGS"
 AC_SUBST(CPPFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_INSTALL_OPTS version: 1 updated: 2014/07/21 18:19:51
+dnl ---------------
+dnl prompt for/fill-in useful install-program options
+AC_DEFUN([CF_INSTALL_OPTS],
+[
+CF_INSTALL_OPT_S
+CF_INSTALL_OPT_O
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_INSTALL_OPT_O version: 2 updated: 2015/05/15 19:45:35
+dnl ----------------
+dnl Almost all "install" programs default to the current user's ownership.
+dnl Almost - MINIX is an exception.
+AC_DEFUN([CF_INSTALL_OPT_O],
+[
+AC_MSG_CHECKING(if install needs to be told about ownership)
+case `$ac_config_guess` in
+(*minix)
+	with_install_o=yes
+	;;
+(*)
+	with_install_o=no
+	;;
+esac
+
+AC_MSG_RESULT($with_install_o)
+if test "x$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
+
+AC_SUBST(INSTALL_OPT_O)
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_INSTALL_OPT_S version: 1 updated: 2014/07/21 18:19:51
+dnl ----------------
+dnl By default, we should strip executables which are installed, but leave the
+dnl ability to suppress that for unit-testing.
+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],
+	[with_stripping=no],
+	[with_stripping=yes])
+AC_MSG_RESULT($with_stripping)
+
+if test "$with_stripping" = yes
+then
+	INSTALL_OPT_S="-s"
+else
+	INSTALL_OPT_S=
+fi
+AC_SUBST(INSTALL_OPT_S)
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_INTEL_COMPILER version: 7 updated: 2015/04/12 15:39:00
 dnl -----------------
 dnl Check if the given compiler is really the Intel compiler for Linux.  It
@@ -4283,7 +4404,7 @@ int main(void)
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MAKEFLAGS version: 17 updated: 2015/08/05 20:44:28
+dnl CF_MAKEFLAGS version: 18 updated: 2018/02/21 21:26:03
 dnl ------------
 dnl Some 'make' programs support ${MAKEFLAGS}, some ${MFLAGS}, to pass 'make'
 dnl options to lower-levels.  It's very useful for "make -n" -- if we have it.
@@ -4312,8 +4433,10 @@ CF_EOF
 			esac
 			break
 			;;
-		(.-)	;;
-		(*)	echo "given option \"$cf_option\", no match \"$cf_result\""
+		(.-)
+			;;
+		(*)
+			CF_MSG_LOG(given option \"$cf_option\", no match \"$cf_result\")
 			;;
 		esac
 	done
@@ -5449,25 +5572,57 @@ AC_DEFUN([CF_PROG_EGREP],
 	test -z "$EGREP" && AC_MSG_ERROR(No egrep program found)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_PROG_GNAT version: 3 updated: 2015/04/18 08:56:57
+dnl CF_PROG_GNAT version: 6 updated: 2018/01/16 16:45:49
 dnl ------------
 dnl Check for gnatmake, ensure that it is complete.
 AC_DEFUN([CF_PROG_GNAT],[
 cf_ada_make=gnatmake
-AC_CHECK_PROG(gnat_exists, $cf_ada_make, yes, no)
-if test "$ac_cv_prog_gnat_exists" = no; then
+cf_ada_config="#"
+AC_CHECK_PROG(gnatmake_exists, $cf_ada_make, yes, no)
+if test "$ac_cv_prog_gnatmake_exists" = no; then
 	cf_ada_make=
 	cf_cv_prog_gnat_correct=no
 else
-	CF_GNAT_VERSION
-	AC_CHECK_PROG(M4_exists, m4, yes, no)
-	if test "$ac_cv_prog_M4_exists" = no; then
-		cf_cv_prog_gnat_correct=no
-		echo Ada95 binding required program m4 not found. Ada95 binding disabled.
+	AC_CHECK_PROG(gprconfig_exists, gprconfig, yes, no)
+	if test "$ac_cv_prog_gprconfig_exists" = yes
+	then
+		rm -rf conftest* *~conftest*
+		if mkdir conftest.src
+		then
+			cf_ada_config=""
+			cd conftest.src
+			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 -n "$cf_gprconfig_value"
+				then
+					eval cf_ada_config_[$]cf_gprconfig=[$]cf_gprconfig_value
+					AC_MSG_RESULT($cf_gprconfig_value)
+				else
+					AC_MSG_RESULT(missing)
+					cf_ada_config="#"
+					break
+				fi
+			done
+			cd ..
+			rm -rf conftest* *~conftest*
+		fi
+	else
+		# gprconfig is newer than gnatmake; we can continue...
+		cf_ada_config="##"
 	fi
-	if test "$cf_cv_prog_gnat_correct" = yes; then
-		AC_MSG_CHECKING(if GNAT works)
-		CF_GNAT_TRY_RUN([procedure conftest;],
+	if test "x$cf_ada_config" != "x#"
+	then
+		CF_GNAT_VERSION
+		AC_CHECK_PROG(M4_exists, m4, yes, no)
+		if test "$ac_cv_prog_M4_exists" = no; then
+			cf_cv_prog_gnat_correct=no
+			echo Ada95 binding required program m4 not found. Ada95 binding disabled.
+		fi
+		if test "$cf_cv_prog_gnat_correct" = yes; then
+			AC_MSG_CHECKING(if GNAT works)
+			CF_GNAT_TRY_RUN([procedure conftest;],
 [with Text_IO;
 with GNAT.OS_Lib;
 procedure conftest is
@@ -5476,11 +5631,17 @@ begin
    Text_IO.New_Line;
    GNAT.OS_Lib.OS_Exit (0);
 end conftest;],[cf_cv_prog_gnat_correct=yes],[cf_cv_prog_gnat_correct=no])
-		AC_MSG_RESULT($cf_cv_prog_gnat_correct)
+			AC_MSG_RESULT($cf_cv_prog_gnat_correct)
+		fi
+	else
+		cf_cv_prog_gnat_correct=no
 	fi
 fi
 
 AC_SUBST(cf_ada_make)
+AC_SUBST(cf_ada_config)
+AC_SUBST(cf_ada_config_Ada)
+AC_SUBST(cf_ada_config_C)
 ])dnl
 dnl ---------------------------------------------------------------------------
 dnl CF_PROG_INSTALL version: 7 updated: 2015/04/18 08:56:57
@@ -5778,7 +5939,7 @@ CF_VERBOSE(...checked $1 [$]$1)
 AC_SUBST(EXTRA_LDFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SHARED_OPTS version: 91 updated: 2017/12/02 18:43:13
+dnl CF_SHARED_OPTS version: 92 updated: 2017/12/30 17:26:05
 dnl --------------
 dnl --------------
 dnl Attempt to determine the appropriate CC/LD options for creating a shared
@@ -5879,11 +6040,11 @@ AC_DEFUN([CF_SHARED_OPTS],
 	(aix4.[3-9]*|aix[[5-7]]*)
 		if test "$GCC" = yes; then
 			CC_SHARED_OPTS='-Wl,-brtl'
-			MK_SHARED_LIB='${CC} ${LDFLAGS} -shared -Wl,-brtl -Wl,-blibpath:${RPATH_LIST}:/usr/lib -o [$]@'
+			MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-brtl -Wl,-blibpath:${RPATH_LIST}:/usr/lib -o [$]@'
 		else
 			CC_SHARED_OPTS='-brtl'
 			# as well as '-qpic=large -G' or perhaps "-bM:SRE -bnoentry -bexpall"
-			MK_SHARED_LIB='${CC} ${LDFLAGS} -G -Wl,-brtl -Wl,-blibpath:${RPATH_LIST}:/usr/lib -o [$]@'
+			MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -G -Wl,-brtl -Wl,-blibpath:${RPATH_LIST}:/usr/lib -o [$]@'
 		fi
 		;;
 	(beos*)
@@ -5977,7 +6138,7 @@ CF_EOF
 			cf_shared_soname='`basename $[@]`'
 		fi
 		CC_SHARED_OPTS=
-		MK_SHARED_LIB='${CC} ${LDFLAGS} -shared -Wl,-rpath,${RPATH_LIST} -Wl,-h,'$cf_shared_soname' -o $[@]'
+		MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-rpath,${RPATH_LIST} -Wl,-h,'$cf_shared_soname' -o $[@]'
 		;;
 	(irix*)
 		if test "$cf_cv_enable_rpath" = yes ; then
@@ -5986,9 +6147,9 @@ CF_EOF
 		# tested with IRIX 5.2 and 'cc'.
 		if test "$GCC" != yes; then
 			CC_SHARED_OPTS='-KPIC'
-			MK_SHARED_LIB='${CC} ${LDFLAGS} -shared -rdata_shared -soname `basename $[@]` -o $[@]'
+			MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -rdata_shared -soname `basename $[@]` -o $[@]'
 		else
-			MK_SHARED_LIB='${CC} ${LDFLAGS} -shared -Wl,-soname,`basename $[@]` -o $[@]'
+			MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,`basename $[@]` -o $[@]'
 		fi
 		cf_cv_rm_so_locs=yes
 		;;
@@ -6073,7 +6234,7 @@ CF_EOF
 			CF_SHARED_SONAME
 			MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,'$cf_cv_shared_soname' -o $[@]'
 		else
-			MK_SHARED_LIB='${CC} ${LDFLAGS} -Wl,-shared -Wl,-Bshareable -o $[@]'
+			MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -Wl,-shared -Wl,-Bshareable -o $[@]'
 		fi
 		;;
 	(osf*|mls+*)
@@ -6135,9 +6296,9 @@ CF_EOF
 			done
 			CFLAGS="$cf_save_CFLAGS"
 			CC_SHARED_OPTS=$cf_shared_opts
-			MK_SHARED_LIB='${CC} ${LDFLAGS} -dy -G -h '$cf_cv_shared_soname' -o $[@]'
+			MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -dy -G -h '$cf_cv_shared_soname' -o $[@]'
 		else
-			MK_SHARED_LIB='${CC} ${LDFLAGS} -shared -dy -G -h '$cf_cv_shared_soname' -o $[@]'
+			MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -dy -G -h '$cf_cv_shared_soname' -o $[@]'
 		fi
 		;;
 	(sysv5uw7*|unix_sv*)
@@ -6332,10 +6493,11 @@ AC_MSG_RESULT($cf_cv_sig_atomic_t)
 test "$cf_cv_sig_atomic_t" != no && AC_DEFINE_UNQUOTED(SIG_ATOMIC_T, $cf_cv_sig_atomic_t,[Define to signal global datatype])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SIZECHANGE version: 11 updated: 2015/04/18 08:56:57
+dnl CF_SIZECHANGE version: 13 updated: 2018/06/08 21:57:23
 dnl -------------
 dnl Check for definitions & structures needed for window size-changing
-dnl FIXME: check that this works with "snake" (HP-UX 10.x)
+dnl
+dnl https://stackoverflow.com/questions/18878141/difference-between-structures-ttysize-and-winsize/50769952#50769952
 AC_DEFUN([CF_SIZECHANGE],
 [
 AC_REQUIRE([CF_STRUCT_TERMIOS])
@@ -6356,24 +6518,26 @@ do
 #include <termio.h>
 #endif
 #endif
+
 #ifdef NEED_PTEM_H
 /* This is a workaround for SCO:  they neglected to define struct winsize in
  * termios.h -- it's only in termio.h and ptem.h
  */
-#include        <sys/stream.h>
-#include        <sys/ptem.h>
+#include <sys/stream.h>
+#include <sys/ptem.h>
 #endif
-#if !defined(sun) || !defined(HAVE_TERMIOS_H)
+
+#ifdef HAVE_SYS_IOCTL_H
 #include <sys/ioctl.h>
 #endif
 ],[
 #ifdef TIOCGSIZE
-	struct ttysize win;	/* FIXME: what system is this? */
+	struct ttysize win;	/* SunOS 3.0... */
 	int y = win.ts_lines;
 	int x = win.ts_cols;
 #else
 #ifdef TIOCGWINSZ
-	struct winsize win;
+	struct winsize win;	/* everything else */
 	int y = win.ws_row;
 	int x = win.ws_col;
 #else
@@ -6393,7 +6557,7 @@ do
 done
 ])
 if test "$cf_cv_sizechange" != no ; then
-	AC_DEFINE(HAVE_SIZECHANGE,1,[Define to 1 if sizechar declarations are provided])
+	AC_DEFINE(HAVE_SIZECHANGE,1,[Define to 1 if sizechange declarations are provided])
 	case $cf_cv_sizechange in
 	(NEED*)
 		AC_DEFINE_UNQUOTED($cf_cv_sizechange )
@@ -6612,7 +6776,7 @@ AC_MSG_RESULT($sigact_bad)
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_STRUCT_TERMIOS version: 8 updated: 2015/04/15 19:08:48
+dnl CF_STRUCT_TERMIOS version: 9 updated: 2018/06/08 21:57:23
 dnl -----------------
 dnl Some machines require _POSIX_SOURCE to completely define struct termios.
 AC_DEFUN([CF_STRUCT_TERMIOS],[
@@ -6622,11 +6786,10 @@ AC_CHECK_HEADERS( \
 termio.h \
 termios.h \
 unistd.h \
+sys/ioctl.h \
+sys/termio.h \
 )
 
-if test "$ISC" = yes ; then
-	AC_CHECK_HEADERS( sys/termio.h )
-fi
 if test "$ac_cv_header_termios_h" = yes ; then
 	case "$CFLAGS $CPPFLAGS" in
 	(*-D_POSIX_SOURCE*)
@@ -7986,7 +8149,7 @@ fi
 AC_SUBST(no_x11_rgb)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_XOPEN_SOURCE version: 52 updated: 2016/08/27 12:21:42
+dnl CF_XOPEN_SOURCE version: 53 updated: 2018/06/16 18:58:58
 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,
@@ -8035,7 +8198,7 @@ case $host_os in
 	cf_XOPEN_SOURCE=
 	;;
 (linux*|uclinux*|gnu*|mint*|k*bsd*-gnu|cygwin)
-	CF_GNU_SOURCE
+	CF_GNU_SOURCE($cf_XOPEN_SOURCE)
 	;;
 (minix*)
 	cf_xopen_source="-D_NETBSD_SOURCE" # POSIX.1-2001 features are ifdef'd with this...