* configure.host: Add arm*-*-openbsd*.

[deliverable/binutils-gdb.git] / bfd / bfd.m4

diff --git a/bfd/bfd.m4 b/bfd/bfd.m4
index 1d7d53a1f21cdef738b18fba8c1752c2762e0d3a..cb0cb4646383028879ee3ee2abf3d818d8f49488 100644 (file)
--- a/bfd/bfd.m4
+++ b/bfd/bfd.m4
@@ -1,6 +1,36 @@
 dnl This file was derived from acinclude.m4.
 
 
+dnl See whether we need a declaration for a function.
+
+AC_DEFUN([BFD_NEED_DECLARATION],
+[AC_MSG_CHECKING([whether $1 must be declared])
+AC_CACHE_VAL(bfd_cv_decl_needed_$1,
+[AC_TRY_COMPILE([
+#include <stdio.h>
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif],
+[char *(*pfn) = (char *(*)) $1],
+bfd_cv_decl_needed_$1=no, bfd_cv_decl_needed_$1=yes)])
+AC_MSG_RESULT($bfd_cv_decl_needed_$1)
+if test $bfd_cv_decl_needed_$1 = yes; then
+  AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]), 1,
+           [Define if $1 is not declared in system header files.])
+fi
+])dnl
+
+
 dnl Check for existence of a type $1 in sys/procfs.h
 
 AC_DEFUN([BFD_HAVE_SYS_PROCFS_TYPE],