From 5730d31289f61338bdb8cbe8a1e1138d3c3665cb Mon Sep 17 00:00:00 2001
From: Emily <vcs@emily.moe>
Date: Sat, 4 Jul 2026 15:47:11 +0100
Subject: [PATCH] ldacbt: use Meson to build

---
 pkgs/by-name/ld/ldacbt/meson.build | 52 +++++++++++++++++
 pkgs/by-name/ld/ldacbt/package.nix | 90 +++++-------------------------
 2 files changed, 67 insertions(+), 75 deletions(-)
 create mode 100644 pkgs/by-name/ld/ldacbt/meson.build

diff --git a/pkgs/by-name/ld/ldacbt/meson.build b/pkgs/by-name/ld/ldacbt/meson.build
new file mode 100644
index 000000000000..1bd0a8ca2e96
--- /dev/null
+++ b/pkgs/by-name/ld/ldacbt/meson.build
@@ -0,0 +1,52 @@
+project(
+  'ldacbt',
+  'c',
+  meson_version: '>=1.10.0',
+  version: files('VERSION'),
+)
+
+pkg = import('pkgconfig')
+
+cc = meson.get_compiler('c')
+dep_m = cc.find_library('m')
+
+lib = library(
+  'ldacBT',
+  'abr/src/ldacBT_abr.c',
+  'src/ldacBT.c',
+  'src/ldaclib.c',
+  include_directories: [
+    'abr/inc',
+    'inc',
+  ],
+  dependencies: [dep_m],
+  version: meson.project_version(),
+  install: true,
+)
+
+install_headers(
+  'abr/inc/ldacBT_abr.h',
+  'inc/ldacBT.h',
+  subdir: 'ldac',
+)
+
+pkg.generate(
+  lib,
+  name: 'ldacBT-enc',
+  description: 'LDAC Bluetooth encoder',
+  subdirs: 'ldac',
+)
+
+pkg.generate(
+  lib,
+  name: 'ldacBT-abr',
+  description: 'LDAC Bluetooth ABR library',
+  subdirs: 'ldac',
+)
+
+pkg.generate(
+  lib,
+  name: 'ldacBT-dec',
+  description: 'LDAC Bluetooth decoder',
+  subdirs: 'ldac',
+)
diff --git a/pkgs/by-name/ld/ldacbt/package.nix b/pkgs/by-name/ld/ldacbt/package.nix
index 67f5bc7eb8f8..532babd3cbf5 100644
--- a/pkgs/by-name/ld/ldacbt/package.nix
+++ b/pkgs/by-name/ld/ldacbt/package.nix
@@ -2,6 +2,8 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  meson,
+  ninja,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -24,87 +26,25 @@ stdenv.mkDerivation (finalAttrs: {
     ./0001-abr-drop-support-for-dynamic-loading-libldac.patch
   ];
 
-  env.NIX_CFLAGS_COMPILE = "-O2 -fPIC -fno-merge-constants -Wall -Iinc -Isrc -Iabr/inc";
+  nativeBuildInputs = [
+    meson
+    ninja
+  ];
+
+  mesonBuildType = "release";
+
+  # The upstream build system is tied to AOSP, so we use our own Meson
+  # definitions to replace it.
+  postPatch = ''
+    ln -s ${./meson.build} meson.build
 
-  # Verify finalAttrs.version matches LDACBT_LIB_VER_* in upstream source.
-  # Guards against silent version drift when the pinned commit changes.
-  preBuild = ''
     awk -v want=${finalAttrs.version} '
       /^#define LDACBT_LIB_VER_/ { v = v sep ($3+0); sep = "." }
       END {
         if (v != want) { print "version mismatch: package says " want ", source reports " v > "/dev/stderr"; exit 1 }
+        print v
       }
-    ' src/ldacBT_api.c
-  '';
-
-  # Upstream ships AOSP build files and a gcc/ makefile that only knows
-  # about the in-tree layout. Compile and link directly; the entire
-  # library is two umbrella translation units.
-  buildPhase = ''
-    runHook preBuild
-
-    soname=libldacBT.so.${lib.versions.major finalAttrs.version}
-    sofile=libldacBT.so.${finalAttrs.version}
-
-    $CC -shared -Wl,-soname,$soname src/ldaclib.c src/ldacBT.c abr/src/ldacBT_abr.c -lm -o $sofile
-
-    runHook postBuild
-  '';
-
-  installPhase = ''
-    runHook preInstall
-
-    install -Dm644 -t $out/lib $sofile
-    ln -s $sofile $out/lib/$soname
-    ln -s $sofile $out/lib/libldacBT.so
-
-    install -Dm644 inc/ldacBT.h $dev/include/ldac/ldacBT.h
-    install -Dm644 abr/inc/ldacBT_abr.h $dev/include/ldac/ldacBT_abr.h
-
-    mkdir -p $dev/lib/pkgconfig
-    cat > $dev/lib/pkgconfig/ldacBT-dec.pc <<EOF
-    prefix=$out
-    exec_prefix=\''${prefix}
-    libdir=$out/lib
-    includedir=$dev/include/ldac
-
-    Name: ldacBT-dec
-    Description: LDAC Bluetooth decoder
-    Version: ${finalAttrs.version}
-    Libs: -L\''${libdir} -lldacBT
-    Libs.private: -lm
-    Cflags: -I\''${includedir}
-    EOF
-
-    cat > $dev/lib/pkgconfig/ldacBT-enc.pc <<EOF
-    prefix=$out
-    exec_prefix=\''${prefix}
-    libdir=$out/lib
-    includedir=$dev/include/ldac
-
-    Name: ldacBT-enc
-    Description: LDAC Bluetooth encoder
-    Version: ${finalAttrs.version}
-    Libs: -L\''${libdir} -lldacBT
-    Libs.private: -lm
-    Cflags: -I\''${includedir}
-    EOF
-
-    cat > $dev/lib/pkgconfig/ldacBT-abr.pc <<EOF
-    prefix=$out
-    exec_prefix=\''${prefix}
-    libdir=$out/lib
-    includedir=$dev/include/ldac
-
-    Name: ldacBT-abr
-    Description: LDAC Bluetooth ABR library
-    Version: ${finalAttrs.version}
-    Libs: -L\''${libdir} -lldacBT
-    Libs.private: -lm
-    Cflags: -I\''${includedir}
-    EOF
-
-    runHook postInstall
+    ' src/ldacBT_api.c > VERSION
   '';
 
   meta = {