Fix compilation on OpenBSD

Non-POSIX functions (like vasprintf() and swap16()) require
_BSD_SOURCE to be defined.

Signed-off-by: Benjamin Stürz <benni@stuerz.xyz>

diff --git a/zbuild.h b/zbuild.h
index 922b2cae2cf808b6715a6e65c7d2d6b1921ddc4e..27f784a99f152fe866880e799283d32ca8e95a0a 100644 (file)
--- a/zbuild.h
+++ b/zbuild.h
@@ -8,6 +8,9 @@
 #ifndef _ISOC11_SOURCE
 #  define _ISOC11_SOURCE 1 /* aligned_alloc */
 #endif
+#ifdef __OpenBSD__
+#  define _BSD_SOURCE 1
+#endif
 
 #include <stddef.h>
 #include <string.h>