From 77cb23fccc7776cf69e802689c27aae83fff14af Mon Sep 17 00:00:00 2001
From: Petr Sumbera <sumbera@volny.cz>
Date: Wed, 1 Apr 2026 15:18:10 +0200
Subject: [PATCH] lib: add Solaris support to the portable endian header

Solaris does not provide <endian.h> or <sys/endian.h>, but it does expose
byte-order definitions and conversion helpers via <sys/isa_defs.h> and
<sys/byteorder.h>.

Add a __sun branch so the portable header defines __BYTE_ORDER and the
htobe*/le*toh conversions on Solaris.

Co-authored-by: Amaan Qureshi <git@amaanq.com>
---
 lib/src/portable/endian.h | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/lib/src/portable/endian.h b/lib/src/portable/endian.h
index 4b3bdb83b..70df2c874 100644
--- a/lib/src/portable/endian.h
+++ b/lib/src/portable/endian.h
@@ -41,6 +41,25 @@
 
 # include <sys/endian.h>
 
+#elif defined(__sun)
+
+#    include <sys/byteorder.h>
+
+#    define htobe16(x) BE_16(x)
+#    define htole16(x) LE_16(x)
+#    define be16toh(x) BE_16(x)
+#    define le16toh(x) LE_16(x)
+
+#    define htobe32(x) BE_32(x)
+#    define htole32(x) LE_32(x)
+#    define be32toh(x) BE_32(x)
+#    define le32toh(x) LE_32(x)
+
+#    define htobe64(x) BE_64(x)
+#    define htole64(x) LE_64(x)
+#    define be64toh(x) BE_64(x)
+#    define le64toh(x) LE_64(x)
+
 #elif defined(__APPLE__)
 #    define __BYTE_ORDER    BYTE_ORDER
 #    define __BIG_ENDIAN    BIG_ENDIAN