When available, use <stdbool.h> for boolean types

CMakeLists.txt

@@ -20,6 +20,9 @@ set(ALL_SRC_FILES  ${ALL_SRC_FILES})
 # Have <stdint.h> ?
 check_include_files(stdint.h GMIO_HAVE_STDINT_H)
 
+# Have <stdbool.h> ?
+check_include_files(stdbool.h GMIO_HAVE_STDBOOL_H)
+
 # Have strtof() ?
 if(NOT BUILD_STRICT_C90)
   check_function_exists(strtof GMIO_HAVE_STRTOF_FUNC)

src/gmio_core/config.h.cmake

@@ -4,6 +4,7 @@
 #define GMIO_CONFIG_H_CMAKE
 
 #cmakedefine GMIO_HAVE_STDINT_H
+#cmakedefine GMIO_HAVE_STDBOOL_H
 #cmakedefine GMIO_HAVE_STRTOF_FUNC
 
 #cmakedefine GMIO_HAVE_GCC_BUILTIN_BSWAP16_FUNC

src/gmio_core/global.h

@@ -47,6 +47,16 @@ typedef unsigned long long uint64_t;
 
 #endif /* GMIO_USE_STDINT_H */
 
+#ifdef GMIO_HAVE_STDBOOL_H
+# include <stdbool.h>
+
+/*! Typedef for boolean type */
+typedef bool gmio_bool_t;
+
+#define GMIO_FALSE false
+#define GMIO_TRUE  true
+
+#else
 /*! Typedef for boolean type */
 typedef int    gmio_bool_t;
 
@@ -57,6 +67,8 @@ enum gmio_bool_value
   GMIO_TRUE = 1
 };
 
+#endif /* GMIO_HAVE_STDBOOL_H */
+
 /*! Typedef for 32bit real type (float) */
 typedef float  gmio_real32_t;