From 507c87642d8a1a9327464e010beebcabe2da7a5d Mon Sep 17 00:00:00 2001
From: Thomas Roessler <roessler@does-not-exist.org>
Date: Fri, 12 May 2000 08:38:29 +0000
Subject: [PATCH] Improve the HP/UX check for the -Ae command line parameter. 
 From albert chin (china@thewrittenword.com).

---
 configure.in | 89 +++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 82 insertions(+), 7 deletions(-)

diff --git a/configure.in b/configure.in
index 904391dc..c6fc283c 100644
--- a/configure.in
+++ b/configure.in
@@ -27,13 +27,14 @@ AC_PROG_INSTALL
 AC_ISC_POSIX
 AC_PROG_RANLIB
 
-case "$host" in
-*-*-hpux*)
-	if test -z "$GCC" ; then
-		CFLAGS="$CFLAGS -Ae -D_HPUX_SOURCE"
-	fi
-	;;
-esac
+dnl The HP-UX 10.20 C compiler needs -Ae for grok ANSI. -Ae
+dnl automatically includes -D_HPUX_SOURCE.
+if test -z "$GCC"; then
+  AC_MSG_CHECKING([if compiler needs -Ae for ANSI source])
+  AC_TRY_COMPILE([int foo (void);], [int num],
+    [AC_MSG_RESULT(no)], [CFLAGS="$CFLAGS -Ae"
+    AC_MSG_RESULT(yes)])
+fi
 
 AC_C_INLINE
 AC_C_CONST
@@ -689,6 +690,80 @@ MUTTLOCALEDIR=$mutt_cv_prefix/$DATADIRNAME/locale
 AC_SUBST(MUTTLOCALEDIR)
 AC_DEFINE_UNQUOTED(MUTTLOCALEDIR, "$MUTTLOCALEDIR")
 
+AC_CHECK_HEADERS(wchar.h)
+
+AC_CACHE_CHECK([for wchar_t], mutt_cv_wchar_t,
+	AC_TRY_COMPILE([
+#include <stddef.h>
+#include <stdlib.h>
+#ifdef HAVE_WCHAR_H
+#include <wchar.h>
+#endif
+int main() { wchar_t wc; return 0; }
+			],
+			mutt_cv_wchar_t=yes,
+			mutt_cv_wchar_t=no))
+
+if test "$mutt_cv_wchar_t" = no; then
+	AC_DEFINE(wchar_t, int)
+fi
+
+AC_CACHE_CHECK([for mbstate_t], mutt_cv_mbstate_t,
+	AC_TRY_COMPILE([
+#include <stddef.h>
+#include <stdlib.h>
+#ifdef HAVE_WCHAR_H
+#include <wchar.h>
+#endif
+int main() { mbstate_t wc; return 0; }
+			],
+			mutt_cv_mbstate_t=yes,
+			mutt_cv_mbstate_t=no))
+
+if test "$mutt_cv_mbstate_t" = no; then
+	AC_DEFINE(mbstate_t, int)
+fi
+
+wc_funcs=maybe
+AC_ARG_WITH(wc-funcs, [  --without-wc-funcs         Do not use the system's wchar_t functions],
+	wc_funcs=$withval)
+
+if test "$wc_funcs" != yes -a "$wc_funcs" != no; then
+	AC_CACHE_CHECK([for working wchar_t functions], mutt_cv_wc_funcs,
+		AC_TRY_RUN([
+#include <stddef.h>
+#include <stdlib.h>
+#ifdef HAVE_WCHAR_H
+#include <wchar.h>
+#endif
+#include <locale.h>
+int main()
+{
+  wchar_t wc = 123;
+  mbstate_t state;
+  const char *s = "\304\211";
+  int tb;
+  char *t = (char *)&tb;
+  setlocale(LC_ALL, "eo.UTF-8");
+  memset(&state, 0, sizeof(mbstate_t));
+  *(t+2) = 'x';
+  exit(!(mbrtowc(0, 0, 0, &state) == 0 &&
+         mbrtowc(&wc, s, 1, &state) == -2 && wc == 123 &&
+         mbrtowc(&wc, s+1, 2, &state) == 1 &&
+         wctomb(t, wc) == 2 && !memcmp(s, t, 2) && *(t+2) == 'x' &&
+	 wcwidth(0) == 0 && wcwidth(wc) == 1 && wcwidth(127) == -1));
+}
+			],
+			mutt_cv_wc_funcs=yes,
+			mutt_cv_wc_funcs=no,
+			mutt_cv_wc_funcs=yes))
+	wc_funcs=$mutt_cv_wc_funcs
+fi
+
+if test $wc_funcs = yes; then
+	AC_DEFINE(HAVE_WC_FUNCS)
+fi
+
 AC_OUTPUT(Makefile intl/Makefile m4/Makefile dnl
 	po/Makefile.in doc/Makefile contrib/Makefile dnl
 	muttbug.sh dnl
-- 
2.40.0