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-rw-r--r--internal.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/internal.h b/internal.h
index f57b6f9c81..fada2e8023 100644
--- a/internal.h
+++ b/internal.h
@@ -29,10 +29,13 @@ extern "C" {
#ifndef __bool_true_false_are_defined
# ifndef __cplusplus
-# error :FIXME: You are the first one who use pre-C99 compiler.
-# error :FIXME: Please add appropriate definition here.
-# error :FIXME: This part is intentionally left undefined,
-# error :FIXME: because the author no longer have such environment.
+# undef bool
+# undef false
+# undef true
+# define bool signed char
+# define false 0
+# define true 1
+# define __bool_true_false_are_defined 1
# endif
#endif