https://bugs.gentoo.org/973126
https://github.com/FluidSynth/fluidsynth/pull/1783

From b194715787cbab66bd8d68a41b27ee6445b11457 Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Fri, 24 Apr 2026 00:01:16 +0100
Subject: [PATCH] utils: fix big endian path for cpp11 implementation

Copying the implementation from embedded (091e849170c5f2e0fb4ef9f011f9798312add7be)
is sufficient here.

Reported by ernsteiswuerfel at https://bugs.gentoo.org/973126.
---
 src/utils/fluid_sys_cpp11.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/utils/fluid_sys_cpp11.h b/src/utils/fluid_sys_cpp11.h
index 5b14defb6..ffb80cb3b 100644
--- a/src/utils/fluid_sys_cpp11.h
+++ b/src/utils/fluid_sys_cpp11.h
@@ -46,10 +46,17 @@ extern "C" {
 #endif
 
 /* Endian detection */
+#ifdef WORDS_BIGENDIAN
+#define FLUID_IS_BIG_ENDIAN       true
+
+#define FLUID_LE32TOH(x)          (((0xFF000000 & (x)) >> 24) | ((0x00FF0000 & (x)) >> 8) | ((0x0000FF00 & (x)) << 8) | ((0x000000FF & (x)) << 24));
+#define FLUID_LE16TOH(x)          (((0xFF00 & (x)) >> 8) | ((0x00FF & (x)) << 8))
+#else
 #define FLUID_IS_BIG_ENDIAN       false
 
 #define FLUID_LE32TOH(x)          (x)
 #define FLUID_LE16TOH(x)          (x)
+#endif
 
 /*
  * Utility functions