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+/* utils.h -- Utility functions.
+ Copyright © 2017 Mathieu Lirzin <mthl@gnu.org>
+
+ This file is part of GNU Mcron.
+
+ GNU Mcron 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.
+
+ GNU Mcron 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 GNU Mcron. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef MCRON_UTILS_H
+#define MCRON_UTILS_H
+
+/**
+ Append DIR in front of ENVAR environment variable value. If ENVAR is not
+ defined, then define it with DIR. Bail out if something went wrong. */
+extern void wrap_env_path (const char *envar, const char *dir);
+
+#endif /* MCRON_UTILS_H */