From 09eec57ad12da10666dad2252f127c663a74d2f6 Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Fri, 14 Feb 2025 13:40:34 +0100
Subject: [PATCH] lpcnetfreedv: fix darwin build

---
 pkgs/by-name/lp/lpcnetfreedv/darwin.patch | 13 +++++++++++++
 pkgs/by-name/lp/lpcnetfreedv/package.nix  |  5 +++++
 2 files changed, 18 insertions(+)
 create mode 100644 pkgs/by-name/lp/lpcnetfreedv/darwin.patch

diff --git a/pkgs/by-name/lp/lpcnetfreedv/darwin.patch b/pkgs/by-name/lp/lpcnetfreedv/darwin.patch
new file mode 100644
index 000000000000..a82ac9b330d5
--- /dev/null
+++ b/pkgs/by-name/lp/lpcnetfreedv/darwin.patch
@@ -0,0 +1,13 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 1600871..1536c55 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -158,7 +158,7 @@ elseif(${SSE} AND (${SSE_PRESENT} OR ${SSE_PRESENT} GREATER 0))
+ # AVX and AVX2 machines will also match on SSE
+     message(STATUS "sse processor flags found or enabled.")
+     set(LPCNET_C_PROC_FLAGS -msse4.1)
+-elseif(${NEON} AND (${NEON_PRESENT} OR ${NEON_PRESENT} GREATER 0))
++elseif(${NEON} AND (${NEON_PRESENT} OR ${NEON_PRESENT} GREATER 0) AND NOT APPLE)
+     # RPi / ARM 32bit
+     message(STATUS "neon processor flags found or enabled.")
+     set(LPCNET_C_PROC_FLAGS -mfpu=neon -march=armv8-a -mtune=cortex-a53)
diff --git a/pkgs/by-name/lp/lpcnetfreedv/package.nix b/pkgs/by-name/lp/lpcnetfreedv/package.nix
index 3a6ed87b37da..bfc773ad47cd 100644
--- a/pkgs/by-name/lp/lpcnetfreedv/package.nix
+++ b/pkgs/by-name/lp/lpcnetfreedv/package.nix
@@ -27,6 +27,11 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ cmake ];
 
+  patches = [
+    # extracted from https://github.com/drowe67/LPCNet/pull/59
+    ./darwin.patch
+  ];
+
   postPatch = ''
     mkdir build
     ln -s ${data} build/lpcnet_${dataVersion}.tgz