2006-02-09 Eric Botcazou <ebotcazou@libertysurf.fr>

	* configure.in (CHECK_DECLS): Add vsnprintf.
	* configure: Regenerate.
	* messages.c (errno.h, stdarg.h, varargs.h, va_list):
	Do not include/declare here, but...
	* as.h: Move code detecting VARARGS idiom to the top.
	(errno.h, stdarg.h, varargs.h, va_list): ...here.
	(vsnprintf): Declare if not already declared.

4 files changed, 113 insertions, 35 deletions

diff --git a/gas/as.h b/gas/as.h
index 5dad712db1..2f92c2ed77 100644
--- a/gas/as.h
+++ b/gas/as.h
@@ -68,6 +68,19 @@ extern void *alloca ();
 # endif /* HAVE_ALLOCA_H */
 #endif /* __GNUC__ */
 
+/* Prefer varargs for non-ANSI compiler, since some will barf if the
+   ellipsis definition is used with a no-arguments declaration.  */
+#if defined (HAVE_VARARGS_H) && !defined (__STDC__)
+#undef HAVE_STDARG_H
+#endif
+
+#if defined (HAVE_STDARG_H)
+#define USE_STDARG
+#endif
+#if !defined (USE_STDARG) && defined (HAVE_VARARGS_H)
+#define USE_VARARGS
+#endif
+
 /* Now, tend to the rest of the configuration.  */
 
 /* System include files first...  */
@@ -90,6 +103,27 @@ extern void *alloca ();
 #include <sys/types.h>
 #endif
 
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#ifdef USE_STDARG
+#include <stdarg.h>
+#endif
+
+#ifdef USE_VARARGS
+#include <varargs.h>
+#endif
+
+#if !defined (USE_STDARG) && !defined (USE_VARARGS)
+/* Roll our own.  */
+#define va_alist REST
+#define va_dcl
+typedef int * va_list;
+#define va_start(ARGS)	ARGS = &REST
+#define va_end(ARGS)
+#endif
+
 #include "getopt.h"
 /* The first getopt value for machine-independent long options.
    150 isn't special; it's just an arbitrary non-ASCII char value.  */
@@ -145,6 +179,10 @@ extern PTR realloc ();
 extern char *strstr ();
 #endif
 
+#if !HAVE_DECL_VSNPRINTF
+extern int vsnprintf(char *, size_t, const char *, va_list);
+#endif
+
 /* This is needed for VMS.  */
 #if ! defined (HAVE_UNLINK) && defined (HAVE_REMOVE)
 #define unlink remove
@@ -442,19 +480,6 @@ struct _pseudo_type
 
 typedef struct _pseudo_type pseudo_typeS;
 
-/* Prefer varargs for non-ANSI compiler, since some will barf if the
-   ellipsis definition is used with a no-arguments declaration.  */
-#if defined (HAVE_VARARGS_H) && !defined (__STDC__)
-#undef HAVE_STDARG_H
-#endif
-
-#if defined (HAVE_STDARG_H)
-#define USE_STDARG
-#endif
-#if !defined (USE_STDARG) && defined (HAVE_VARARGS_H)
-#define USE_VARARGS
-#endif
-
 #ifdef USE_STDARG
 #if (__GNUC__ >= 2) && !defined(VMS)
 /* for use with -Wformat */
diff --git a/gas/configure b/gas/configure
index c32f16eae4..5cba97e6ed 100755
--- a/gas/configure
+++ b/gas/configure
@@ -10943,6 +10943,79 @@ _ACEOF
 fi
 
 
+echo "$as_me:$LINENO: checking whether vsnprintf is declared" >&5
+echo $ECHO_N "checking whether vsnprintf is declared... $ECHO_C" >&6
+if test "${ac_cv_have_decl_vsnprintf+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+#ifndef vsnprintf
+  char *p = (char *) vsnprintf;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_have_decl_vsnprintf=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_have_decl_vsnprintf=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_have_decl_vsnprintf" >&5
+echo "${ECHO_T}$ac_cv_have_decl_vsnprintf" >&6
+if test $ac_cv_have_decl_vsnprintf = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_VSNPRINTF 1
+_ACEOF
+
+
+else
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_VSNPRINTF 0
+_ACEOF
+
+
+fi
+
+
+
 
 
                               ac_config_files="$ac_config_files Makefile doc/Makefile po/Makefile.in:po/Make-in"
diff --git a/gas/configure.in b/gas/configure.in
index 9929755a31..fd14bcf7bd 100644
--- a/gas/configure.in
+++ b/gas/configure.in
@@ -663,6 +663,8 @@ GAS_CHECK_DECL_NEEDED(malloc, f, char *(*f)(), $gas_test_headers)
 GAS_CHECK_DECL_NEEDED(sbrk, f, char *(*f)(), $gas_test_headers)
 GAS_CHECK_DECL_NEEDED(strstr, f, char *(*f)(), $gas_test_headers)
 
+AC_CHECK_DECLS([vsnprintf])
+
 dnl This must come last.
 
 dnl We used to make symlinks to files in the source directory, but now
diff --git a/gas/messages.c b/gas/messages.c
index a8e309d162..b1b94cdf7c 100644
--- a/gas/messages.c
+++ b/gas/messages.c
@@ -21,28 +21,6 @@
 
 #include "as.h"
 
-#include <stdio.h>
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-
-#ifdef USE_STDARG
-#include <stdarg.h>
-#endif
-
-#ifdef USE_VARARGS
-#include <varargs.h>
-#endif
-
-#if !defined (USE_STDARG) && !defined (USE_VARARGS)
-/* Roll our own.  */
-#define va_alist REST
-#define va_dcl
-typedef int * va_list;
-#define va_start(ARGS)	ARGS = &REST
-#define va_end(ARGS)
-#endif
-
 static void identify (char *);
 static void as_show_where (void);
 static void as_warn_internal (char *, unsigned int, char *);