autoconf: fix some "obsolete function" warnings with newer (2.7x) autoconfs

We also now require at least autoconf 2.69 - which should be fine as
it was released in 2012.

cde/configure.ac

@@ -23,6 +23,12 @@ AC_SUBST(CDE_VERSION_MINOR)
 AC_SUBST(CDE_VERSION_MICRO)
 AC_SUBST(CDE_VERSION_DEV)
 
+dnl released in 2012, this should be sufficient
+AC_PREREQ([2.69])
+
+AC_CANONICAL_HOST
+AC_CANONICAL_BUILD
+
 dnl These must be up here for the compiler search list to actually work
 AC_PROG_CC([cc gcc clang])
 AC_PROG_CXX([c++ g++ clang++])
@@ -30,16 +36,9 @@ AC_PROG_CXX([c++ g++ clang++])
 LT_INIT
 AC_PREFIX_DEFAULT(/usr/dt)
 
-AC_ENABLE_STATIC([no])
 
 PKG_PROG_PKG_CONFIG
 
-dnl todo: determine what version of autoconf we depend on
-dnl AC_PREREQ()
-
-AC_CANONICAL_HOST
-AC_CANONICAL_BUILD
-
 dnl SOURCE_DEFINES - start with CDE project default
 SOURCE_CPP_DEFINES="-DANSICPP -DMULTIBYTE -DNLS16"
 
@@ -83,7 +82,7 @@ EXTRA_INCS=""
 # pam currently only works on netbsd (9.2 tested) and linux
 supports_pam=no
 
-case "${host_os}" in
+case "${build_os}" in
 	linux*)
 		build_linux=yes
                 OSMAJORVERSION=4
@@ -281,7 +280,7 @@ dnl do.  This is not a replacement for cpp, used at runtime by
 dnl software such as tt_type_comp.
 AC_SUBST(GENCPP, '$(top_builddir)/util/tradcpp/tradcpp')
 
-AM_PROG_LIBTOOL
+LT_INIT
 
 dnl make sure it's installed
 AC_PROG_YACC
@@ -289,7 +288,7 @@ if test -z "$ac_cv_prog_YACC"; then
    MISSING_PROGS="[bison or byacc] ${MISSING_PROGS}"
 fi
 
-AM_PROG_LEX
+AC_PROG_LEX(noyywrap)
 if test -z "$ac_cv_prog_LEX"; then
    MISSING_PROGS="[flex or lex] ${MISSING_PROGS}"
 fi
@@ -308,14 +307,11 @@ AC_C_CONST
 AC_C_BIGENDIAN
 AC_C_INLINE
 AC_C_CHAR_UNSIGNED
-AC_C_STRINGIZE
 AC_C_FLEXIBLE_ARRAY_MEMBER
 AC_SYS_POSIX_TERMIOS
 
 AX_PTHREAD
 
-AC_PROG_CC_C99
-
 AC_PATH_X
 AC_PATH_XTRA
 
@@ -406,7 +402,6 @@ dnl Used to check if program 'tic' is available to install terminfo files
 AC_CHECK_PROGS(TIC, tic, :)
 
 dnl headers
-AC_HEADER_STDC
 AC_CHECK_HEADERS([locale.h security/pam_appl.h utempter.h])
 
 dnl libraries

cde/m4/ax_pthread.m4

@@ -294,7 +294,7 @@ if test "x$ax_pthread_clang" = "xyes"; then
 	     # step
 	     ax_pthread_save_ac_link="$ac_link"
 	     ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g'
-	     ax_pthread_link_step=`$as_echo "$ac_link" | sed "$ax_pthread_sed"`
+	     ax_pthread_link_step=`echo "$ac_link" | sed "$ax_pthread_sed"`
 	     ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)"
 	     ax_pthread_save_CFLAGS="$CFLAGS"
 	     for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do

cde/m4/tcl.m4

@@ -28,7 +28,7 @@ AC_DEFUN([SC_PATH_TCLCONFIG], [
 	# we reset no_tcl in case something fails here
 	no_tcl=true
 	AC_ARG_WITH(tcl,
-	    AC_HELP_STRING([--with-tcl],
+	    AS_HELP_STRING([--with-tcl],
 		[directory containing tcl configuration (tclConfig.sh)]),
 	    with_tclconfig="${withval}")
 	AC_MSG_CHECKING([for Tcl configuration])
@@ -159,7 +159,7 @@ AC_DEFUN([SC_PATH_TKCONFIG], [
 	# we reset no_tk in case something fails here
 	no_tk=true
 	AC_ARG_WITH(tk,
-	    AC_HELP_STRING([--with-tk],
+	    AS_HELP_STRING([--with-tk],
 		[directory containing tk configuration (tkConfig.sh)]),
 	    with_tkconfig="${withval}")
 	AC_MSG_CHECKING([for Tk configuration])
@@ -528,7 +528,7 @@ AC_DEFUN([SC_BUILD_TCLSH], [
 AC_DEFUN([SC_ENABLE_SHARED], [
     AC_MSG_CHECKING([how to build libraries])
     AC_ARG_ENABLE(shared,
-	AC_HELP_STRING([--enable-shared],
+	AS_HELP_STRING([--enable-shared],
 	    [build and link with shared libraries (default: on)]),
 	[tcl_ok=$enableval], [tcl_ok=yes])
 
@@ -570,7 +570,7 @@ AC_DEFUN([SC_ENABLE_FRAMEWORK], [
     if test "`uname -s`" = "Darwin" ; then
 	AC_MSG_CHECKING([how to package libraries])
 	AC_ARG_ENABLE(framework,
-	    AC_HELP_STRING([--enable-framework],
+	    AS_HELP_STRING([--enable-framework],
 		[package shared libraries in MacOSX frameworks (default: off)]),
 	    [enable_framework=$enableval], [enable_framework=no])
 	if test $enable_framework = yes; then
@@ -621,7 +621,7 @@ AC_DEFUN([SC_ENABLE_FRAMEWORK], [
 
 AC_DEFUN([SC_ENABLE_THREADS], [
     AC_ARG_ENABLE(threads,
-	AC_HELP_STRING([--enable-threads],
+	AS_HELP_STRING([--enable-threads],
 	    [build with threads (default: on)]),
 	[tcl_ok=$enableval], [tcl_ok=yes])
 
@@ -737,7 +737,7 @@ AC_DEFUN([SC_ENABLE_THREADS], [
 AC_DEFUN([SC_ENABLE_SYMBOLS], [
     AC_MSG_CHECKING([for build with symbols])
     AC_ARG_ENABLE(symbols,
-	AC_HELP_STRING([--enable-symbols],
+	AS_HELP_STRING([--enable-symbols],
 	    [build with debugging symbols (default: off)]),
 	[tcl_ok=$enableval], [tcl_ok=no])
 # FIXME: Currently, LDFLAGS_DEFAULT is not used, it should work like CFLAGS_DEFAULT.
@@ -797,7 +797,7 @@ AC_DEFUN([SC_ENABLE_SYMBOLS], [
 
 AC_DEFUN([SC_ENABLE_LANGINFO], [
     AC_ARG_ENABLE(langinfo,
-	AC_HELP_STRING([--enable-langinfo],
+	AS_HELP_STRING([--enable-langinfo],
 	    [use nl_langinfo if possible to determine encoding at startup, otherwise use old heuristic (default: on)]),
 	[langinfo_ok=$enableval], [langinfo_ok=yes])
 
@@ -849,7 +849,7 @@ AC_DEFUN([SC_ENABLE_LANGINFO], [
 AC_DEFUN([SC_CONFIG_MANPAGES], [
     AC_MSG_CHECKING([whether to use symlinks for manpages])
     AC_ARG_ENABLE(man-symlinks,
-	AC_HELP_STRING([--enable-man-symlinks],
+	AS_HELP_STRING([--enable-man-symlinks],
 	    [use symlinks for the manpages (default: off)]),
 	test "$enableval" != "no" && MAN_FLAGS="$MAN_FLAGS --symlinks",
 	enableval="no")
@@ -857,7 +857,7 @@ AC_DEFUN([SC_CONFIG_MANPAGES], [
 
     AC_MSG_CHECKING([whether to compress the manpages])
     AC_ARG_ENABLE(man-compression,
-	AC_HELP_STRING([--enable-man-compression=PROG],
+	AS_HELP_STRING([--enable-man-compression=PROG],
 	    [compress the manpages with PROG (default: off)]),
 	[case $enableval in
 	    yes) AC_MSG_ERROR([missing argument to --enable-man-compression]);;
@@ -878,7 +878,7 @@ AC_DEFUN([SC_CONFIG_MANPAGES], [
 
     AC_MSG_CHECKING([whether to add a package name suffix for the manpages])
     AC_ARG_ENABLE(man-suffix,
-	AC_HELP_STRING([--enable-man-suffix=STRING],
+	AS_HELP_STRING([--enable-man-suffix=STRING],
 	    [use STRING as a suffix to manpage file names (default: no, AC_PACKAGE_NAME if enabled without specifying STRING)]),
 	[case $enableval in
 	    yes) enableval="AC_PACKAGE_NAME" MAN_FLAGS="$MAN_FLAGS --suffix $enableval";;
@@ -1029,7 +1029,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 
     AC_MSG_CHECKING([if 64bit support is requested])
     AC_ARG_ENABLE(64bit,
-	AC_HELP_STRING([--enable-64bit],
+	AS_HELP_STRING([--enable-64bit],
 	    [enable 64bit support (default: off)]),
 	[do64bit=$enableval], [do64bit=no])
     AC_MSG_RESULT([$do64bit])
@@ -1038,7 +1038,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 
     AC_MSG_CHECKING([if 64bit Sparc VIS support is requested])
     AC_ARG_ENABLE(64bit-vis,
-	AC_HELP_STRING([--enable-64bit-vis],
+	AS_HELP_STRING([--enable-64bit-vis],
 	    [enable 64bit Sparc VIS support (default: off)]),
 	[do64bitVIS=$enableval], [do64bitVIS=no])
     AC_MSG_RESULT([$do64bitVIS])
@@ -1067,7 +1067,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 
     AC_MSG_CHECKING([if rpath support is requested])
     AC_ARG_ENABLE(rpath,
-	AC_HELP_STRING([--disable-rpath],
+	AS_HELP_STRING([--disable-rpath],
 	    [disable rpath support (default: on)]),
 	[doRpath=$enableval], [doRpath=yes])
     AC_MSG_RESULT([$doRpath])
@@ -1632,7 +1632,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    PLAT_SRCS='${MAC_OSX_SRCS}'
 	    AC_MSG_CHECKING([whether to use CoreFoundation])
 	    AC_ARG_ENABLE(corefoundation,
-		AC_HELP_STRING([--enable-corefoundation],
+		AS_HELP_STRING([--enable-corefoundation],
 		    [use CoreFoundation API on MacOSX (default: on)]),
 		[tcl_corefoundation=$enableval], [tcl_corefoundation=yes])
 	    AC_MSG_RESULT([$tcl_corefoundation])
@@ -1986,7 +1986,7 @@ dnl # preprocessing tests use only CPPFLAGS.
     # Step 4: disable dynamic loading if requested via a command-line switch.
 
     AC_ARG_ENABLE(load,
-	AC_HELP_STRING([--enable-load],
+	AS_HELP_STRING([--enable-load],
 	    [allow dynamic loading and "load" command (default: on)]),
 	[tcl_ok=$enableval], [tcl_ok=yes])
     AS_IF([test "$tcl_ok" = no], [DL_OBJS=""])
@@ -2666,7 +2666,7 @@ AC_DEFUN([SC_TCL_64BIT_FLAGS], [
 
 AC_DEFUN([SC_TCL_CFG_ENCODING], [
     AC_ARG_WITH(encoding,
-	AC_HELP_STRING([--with-encoding],
+	AS_HELP_STRING([--with-encoding],
 	    [encoding for configuration values (default: iso8859-1)]),
 	with_tcencoding=${withval})