Build squeezelite on the device on a 64-bit or trixie userland

The shipped squeezelite is a 32-bit ARM binary linked against libFLAC.so.12 (bookworm
on armhf). Elsewhere the role now builds upstream squeezelite at a pinned commit with
the same options as the old ARM build, installing the -dev packages instead of
soname-specific runtime libraries. `ansible_architecture` is the kernel's, so the
choice reads the userland's architecture from dpkg; override with
`pi_squeezelite_custom_build_from_source: true|false`.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

roles/pi_squeezelite_custom/tasks/build.yml

@@ -0,0 +1,41 @@
+---
+- name: Check out squeezelite
+  ansible.builtin.git:
+    repo: "{{ pi_squeezelite_custom_repo }}"
+    dest: /opt/squeezelite-src
+    version: "{{ pi_squeezelite_custom_version }}"
+    force: true
+  register: pi_squeezelite_custom_checkout
+
+- name: Check whether a built binary already exists
+  ansible.builtin.stat:
+    path: /opt/squeezelite
+  register: pi_squeezelite_custom_binary
+
+- name: Write the makefile (upstream Makefile plus this build's options)
+  # Same options as the ARM build in "custom build/readme_build.md", minus the ARMv6
+  # -march/-mfpu/-mfloat-abi flags that make no sense for aarch64. No RPI (GPIO switching)
+  # option. -lasound is added explicitly, as before.
+  ansible.builtin.copy:
+    dest: /opt/squeezelite-src/mymakefile
+    mode: "0644"
+    content: |
+      OPTS = -DLINUX -DRESAMPLE -DDSD -DUSE_SSL -DLINKALL -I./include -I./include/opus -I./include/alac -I/usr/local/include
+      LDFLAGS = -L./lib -L/usr/local/lib -s -lasound
+
+      include Makefile
+
+- name: Build squeezelite
+  ansible.builtin.shell:
+    cmd: make -f mymakefile clean && make -f mymakefile
+    chdir: /opt/squeezelite-src
+  when: pi_squeezelite_custom_checkout.changed or not pi_squeezelite_custom_binary.stat.exists
+  changed_when: true
+
+- name: Install built squeezelite
+  ansible.builtin.copy:
+    src: /opt/squeezelite-src/squeezelite
+    dest: /opt/squeezelite
+    mode: "700"
+    remote_src: true
+  notify: Restart squeezelite