From 24a5cc6b43eb5463e414549c6aeb3a8b53ec8497 Mon Sep 17 00:00:00 2001
From: Sergey Fedorov <barracuda@macos-powerpc.org>
Date: Mon, 27 Jul 2026 10:40:24 +0000
Subject: [PATCH 1/2] build: avoid glibc-only byteswap.h for the COLR version
 swap

byteswap.h and bswap_16() are glibc extensions, not available on
BSD/Darwin libc. Replace the single 16-bit swap with a portable
shift-based expression.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U6fuL1PtRJHhr97gAGyS1h
---
 fcft.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fcft.c b/fcft.c
index 98f7323..4cea2d4 100644
--- a/subprojects/fcft/fcft.c
+++ b/subprojects/fcft/fcft.c
@@ -1,7 +1,6 @@
 #include "fcft/fcft.h"
 
 #include <assert.h>
-#include <byteswap.h>
 #include <locale.h>
 #include <math.h>
 #include <stdbool.h>
@@ -685,7 +684,7 @@ instantiate_pattern(FcPattern *pattern, double req_pt_size, double req_px_size,
         }
 
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-        version = bswap_16(version);
+        version = (uint16_t)((version << 8) | (version >> 8));
 #endif
 
         LOG_DBG("%s: COLR: version=%d", version);