Initial revision

[chaz/tar] / m4 / mbrtowc.m4

diff --git a/m4/mbrtowc.m4 b/m4/mbrtowc.m4
new file mode 100644 (file)
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+#serial 1
+
+dnl From Paul Eggert
+
+AC_DEFUN(jm_FUNC_MBRTOWC,
+[
+  AC_MSG_CHECKING([whether mbrtowc is declared])
+  AC_CACHE_VAL(jm_cv_func_mbrtowc,
+    [AC_TRY_LINK(
+       [#include <wchar.h>],
+       [return !mbrtowc;],
+       [jm_cv_func_mbrtowc=yes],
+       [jm_cv_func_mbrtowc=no])])
+  if test $jm_cv_func_mbrtowc = yes; then
+    AC_MSG_RESULT(yes)
+    AC_DEFINE(HAVE_MBRTOWC, 1,
+      [Define to 1 if mbrtowc exists and is properly declared.])
+  fi
+])