devel/util-linux: Future-proofing patch

devel/util-linux/files/patch-include_bitops.h

@@ -0,0 +1,40 @@
+commit a38d1f69fee5ca7e883b09ed3668a7da3b161051
+Author: Warner Losh <imp@FreeBSD.org>
+Date:   Fri Apr 29 15:29:44 2022 -0600
+
+    BSD: Use byteswap.h and endian.h defined macos when present
+
+    Newer versions of FreeBSD will have a glibc compatible
+    byteswap.h. Currently, this file assumes that FreeBSD requires
+    bswap{16,32,64} to always be defined. This isn't the case when we're
+    using the byteswap.h file (which is enabled by HAVE_BYTESWAP_H
+    define). Assume that if byteswap.h and endian.h are present, then the
+    proper macros are defined.  Otherwise, assume that sys/endian.h is
+    present and paper over the small differences between the BSDs for this
+    file.
+
+    Signed-off-by: Warner Losh <imp@bsdimp.com>
+
+--- include/bitops.h
++++ include/bitops.h
+@@ -20,6 +20,12 @@
+ #  include <sys/endian.h>
+ #endif
+
++#if !(defined(HAVE_BYTESWAP_H) && defined(HAVE_ENDIAN_H))
++/*
++ * When both byteswap.h and endian.h are preseent, the proper macros are defined
++ * as those files are glibc compatible.  Otherwise, compensate for the slightly
++ * different interfaces between the different BSDs.
++ */
+ #if defined(__OpenBSD__)
+ # include <sys/types.h>
+ # define be16toh(x) betoh16(x)
+@@ -47,6 +53,7 @@
+ # define bswap_32(x) OSSwapInt32(x)
+ # define bswap_64(x) OSSwapInt64(x)
+ #endif
++#endif
+
+ /*
+  * Fallbacks