Check for asprintf and vasprintf during configure stage.

This should fix some build errors seen on AIX, MinGW, and possibly other
non-GNU systems too due to missing asprintf().

bfd/

	* configure.in: Add asprintf and vasprintf to AC_CHECK_DECLS.
	* config.in, configure: Regenerate.

bfd/ChangeLog

@@ -1,3 +1,8 @@
+2015-07-28  Iain Buclaw  <ibuclaw@gdcproject.org>
+
+	* configure.in: Add asprintf and vasprintf to AC_CHECK_DECLS.
+	* config.in, configure: Regenerate.
+
 2015-07-27  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* configure: Regenerated.

bfd/config.in

@@ -17,6 +17,10 @@
 /* Define to 1 if you have the <alloca.h> header file. */
 #undef HAVE_ALLOCA_H
 
+/* Define to 1 if you have the declaration of `asprintf', and to 0 if you
+   don't. */
+#undef HAVE_DECL_ASPRINTF
+
 /* Define to 1 if you have the declaration of `basename', and to 0 if you
    don't. */
 #undef HAVE_DECL_BASENAME
@@ -72,6 +76,10 @@
    */
 #undef HAVE_DECL_STRSTR
 
+/* Define to 1 if you have the declaration of `vasprintf', and to 0 if you
+   don't. */
+#undef HAVE_DECL_VASPRINTF
+
 /* Define to 1 if you have the declaration of `vsnprintf', and to 0 if you
    don't. */
 #undef HAVE_DECL_VSNPRINTF

bfd/configure

@@ -13819,6 +13819,28 @@ cat >>confdefs.h <<_ACEOF
 #define HAVE_DECL_STRSTR $ac_have_decl
 _ACEOF
 
+ac_fn_c_check_decl "$LINENO" "asprintf" "ac_cv_have_decl_asprintf" "$ac_includes_default"
+if test "x$ac_cv_have_decl_asprintf" = x""yes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_ASPRINTF $ac_have_decl
+_ACEOF
+
+ac_fn_c_check_decl "$LINENO" "vasprintf" "ac_cv_have_decl_vasprintf" "$ac_includes_default"
+if test "x$ac_cv_have_decl_vasprintf" = x""yes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_VASPRINTF $ac_have_decl
+_ACEOF
+
 ac_fn_c_check_decl "$LINENO" "snprintf" "ac_cv_have_decl_snprintf" "$ac_includes_default"
 if test "x$ac_cv_have_decl_snprintf" = x""yes; then :
   ac_have_decl=1

bfd/configure.ac

@@ -232,6 +232,8 @@ AC_CHECK_DECLS(malloc)
 AC_CHECK_DECLS(realloc)
 AC_CHECK_DECLS(stpcpy)
 AC_CHECK_DECLS(strstr)
+AC_CHECK_DECLS(asprintf)
+AC_CHECK_DECLS(vasprintf)
 AC_CHECK_DECLS(snprintf)
 AC_CHECK_DECLS(vsnprintf)
 AC_CHECK_DECLS(strnlen)