Check for stdbool.h at configuration stage, and include it if available.

Check for lowercase 'bool' type at configuration stage. If not available
provide a suitable replacement with a type definition of 'unsigned char'
in setup_once.h

Move definitions of TRUE and FALSE to setup_once.h

1 files changed, 26 insertions, 0 deletions

diff --git a/lib/setup_once.h b/lib/setup_once.h
index 7af68bf3f..79324d40f 100644
--- a/lib/setup_once.h
+++ b/lib/setup_once.h
@@ -69,6 +69,10 @@
 #include <fcntl.h>
 #endif
 
+#ifdef HAVE_STDBOOL_H
+#include <stdbool.h>
+#endif
+
 
 /*
  * Definition of timeval struct for platforms that don't have it.
@@ -184,6 +188,28 @@ struct timeval {
 
 
 /*
+ * Typedef to 'unsigned char' if bool is not an available 'typedefed' type.
+ */
+
+#ifndef HAVE_BOOL_T
+typedef unsigned char bool;
+#define HAVE_BOOL_T
+#endif
+
+
+/*
+ * Default definition of uppercase TRUE and FALSE.
+ */
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+
+/*
  * Typedef to 'int' if sig_atomic_t is not an available 'typedefed' type.
  */