findutils-4.6.0HEADfindutils-4.6.0master

1 files changed, 47 insertions, 0 deletions

diff --git a/lib/forcefindlib.c b/lib/forcefindlib.c
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+/* Ensures that the FINDLIB_REPLACE_FUNCS macro in configure.in works
+   Copyright (C) 2004, 2010, 2011 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+/* Written by James Youngman. */
+
+
+#include <config.h>
+
+
+extern void forcefindlib (void);	/* prevent GCC warning... */
+
+
+
+/* forcefindlib
+ *
+ * This function exists only to be pulled into libfind.a by the
+ * FINDLIB_REPLACE_FUNCS macro in configure.in.   We already have
+ * AC_REPLACE_FUNCS, but that adds to LIBOBJS, and that's a gnulib thing
+ * in the case of findutils.  Hence we have out own library of replacement
+ * functions which aren't in gnulib (or aren't in it any more).  An example
+ * of this is waitpid().   I develop on a system that doesn't
+ * lack waitpid, for example.   Therefore FINDLIB_REPLACE_FUNCS(waitpid)
+ * never puts waitpid.o into FINDLIBOBJS.  Hence, to ensure that these
+ * macros are tested every time, we use FINDLIB_REPLACE_FUNCS on a function
+ * that never exists anywhere, so always needs to be pulled in.  That function
+ * is forcefindlib().
+ */
+void
+forcefindlib (void)
+{
+  /* does nothing, exists only to ensure that FINDLIB_REPLACE_FUNCS works. */
+}