Assume <string.h> exists,

[gnulib.git] / m4 / error.m4

diff --git a/m4/error.m4 b/m4/error.m4
index eac272a..14e23a7 100644 (file)
--- a/m4/error.m4
+++ b/m4/error.m4
@@ -1,13 +1,18 @@
-dnl From Jim Meyering.  Use this if you use the GNU error.[ch].
-dnl FIXME: Migrate into libit
+#serial 7
 
-AC_DEFUN(AM_FUNC_ERROR_AT_LINE,
-[AC_CACHE_CHECK([for error_at_line], am_cv_lib_error_at_line,
- [AC_TRY_LINK([],[error_at_line(0, 0, "", 0, "");],
-              am_cv_lib_error_at_line=yes,
-             am_cv_lib_error_at_line=no)])
- if test $am_cv_lib_error_at_line = no; then
-   LIBOBJS="$LIBOBJS error.o"
- fi
- AC_SUBST(LIBOBJS)dnl
+AC_DEFUN([gl_ERROR],
+[
+  AC_FUNC_ERROR_AT_LINE
+  dnl Note: AC_FUNC_ERROR_AT_LINE does AC_LIBSOURCES([error.h, error.c]).
+  jm_PREREQ_ERROR
+])
+
+# Prerequisites of lib/error.c.
+AC_DEFUN([jm_PREREQ_ERROR],
+[
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_REQUIRE([AC_FUNC_VPRINTF])
+  AC_CHECK_FUNCS(strerror)
+  AC_CHECK_DECLS([strerror])
+  AC_FUNC_STRERROR_R
 ])