1 files changed, 43 insertions, 0 deletions
diff --git a/portable/stdbool.h b/portable/stdbool.h
new file mode 100644
index 0000000..61dd8a1
--- /dev/null
+++ b/portable/stdbool.h
@@ -0,0 +1,43 @@
+/* $Id$
+ *
+ * Portability wrapper around <stdbool.h>.
+ *
+ * Provides the bool and _Bool types and the true and false constants,
+ * following the C99 specification, on hosts that don't have stdbool.h.  This
+ * logic is based heavily on the example in the Autoconf manual.
+ *
+ * Written by Russ Allbery <rra@stanford.edu>
+ * This work is hereby placed in the public domain by its author.
+ */
+
+#ifndef PORTABLE_STDBOOL_H
+#define PORTABLE_STDBOOL_H 1
+
+#if HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# if !HAVE__BOOL
+#  ifdef __cplusplus
+typedef bool _Bool;
+#  elif _WIN32
+#   include <windef.h>
+#   define bool BOOL
+#  else
+typedef unsigned char _Bool;
+#   define bool _Bool
+#  endif
+# endif
+# define false 0
+# define true  1
+# define __bool_true_false_are_defined 1
+#endif
+
+/*
+ * If we define bool and don't tell Perl, it will try to define its own and
+ * fail.  Only of interest for programs that also include Perl headers.
+ */
+#ifndef HAS_BOOL
+# define HAS_BOOL 1
+#endif
+
+#endif /* !PORTABLE_STDBOOL_H */