Show version when configuring.

If we don't seem to have an ANSI compiler, then omit a warning as soon
as that is discovered, because it is likely to break later configure
tests.  This doesn't seem to catch the particular HP-UX compiler I was
after, which is non-ANSI but only emits a warning on this configure
test.  Nevertheless probably better to have it in.

NEWS

@@ -81,8 +81,8 @@ rsync 2.4.7 (sometime in 2001, maybe :)		-*- indented-text -*-
 		FreeBSD 3.3-RELEASE i386 cc
 		FreeBSD 4.1.1-RELEASE i386 cc
 		FreeBSD 4.3-STABLE i386 cc
-		HP-UX 10.10 gcc
-		HP-UX 11.11 cc
+		HP PA-RISC HP-UX 10.20 gcc
+		HP PA-RISC HP-UX 11.11 cc
 		IRIX 6.5 MIPS cc
 		IRIX 6.5 MIPS gcc
 		Mac OS X PPC (--disable-ipv6) cc

configure.in

@@ -5,6 +5,12 @@ AC_CONFIG_SRCDIR([byteorder.h])
 AC_CONFIG_HEADER(config.h)
 AC_PREREQ(2.52)
 
+RSYNC_VERSION=2.4.7pre5
+AC_SUBST(RSYNC_VERSION)
+AC_MSG_NOTICE([Configuring rsync $RSYNC_VERSION])
+
+AC_DEFINE_UNQUOTED(RSYNC_VERSION, ["$RSYNC_VERSION"], [rsync release version])
+
 LDFLAGS=${LDFLAGS-""}
 
 AC_CANONICAL_TARGET([])
@@ -13,11 +19,13 @@ dnl Checks for programs.
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_INSTALL
+AC_PROG_CC_STDC
 AC_SUBST(SHELL)
 
-RSYNC_VERSION=2.4.7pre4
-AC_SUBST(RSYNC_VERSION)
-AC_DEFINE_UNQUOTED(RSYNC_VERSION, ["$RSYNC_VERSION"], [rsync release version])
+if test "$xac_cv_prog_cc_stdc" = xno
+then
+	AC_MSG_WARN([rsync requires an ANSI C compiler and you don't seem to have one])
+fi
 
 # compile with optimisation and without debugging by default, unless
 # --debug is given.  We must decide this before testing the compiler.