config.guess update from prep

[gnulib.git] / m4 / jm-glibc-io.m4

diff --git a/m4/jm-glibc-io.m4 b/m4/jm-glibc-io.m4
index e6ff4da..e8054f0 100644 (file)
--- a/m4/jm-glibc-io.m4
+++ b/m4/jm-glibc-io.m4
@@ -1,24 +1,14 @@
-#serial 1
+#serial 7 -*- autoconf -*-
 
 dnl From Jim Meyering.
 dnl
 dnl See if the glibc *_unlocked I/O macros are available.
+dnl Use only those *_unlocked macros that are declared.
 dnl
 
-AC_DEFUN(jm_FUNC_GLIBC_UNLOCKED_IO,
-  [AC_CHECK_FUNCS(                             \
-    clearerr_unlocked                          \
-    fclose_unlocked                            \
-    feof_unlocked                              \
-    ferror_unlocked                            \
-    fflush_unlocked                            \
-    fputc_unlocked                             \
-    fread_unlocked                             \
-    fwrite_unlocked                            \
-    getc_unlocked                              \
-    getchar_unlocked                           \
-    putc_unlocked                              \
-    putchar_unlocked                           \
-   )
-  ]
-)
+AC_DEFUN([jm_FUNC_GLIBC_UNLOCKED_IO],
+  [AC_CHECK_DECLS(
+     [clearerr_unlocked, feof_unlocked, ferror_unlocked,
+      fflush_unlocked, fgets_unlocked, fputc_unlocked, fputs_unlocked,
+      fread_unlocked, fwrite_unlocked, getc_unlocked,
+      getchar_unlocked, putc_unlocked, putchar_unlocked])])