android/meson.build: move target org_musicpd_Bridge.h to include/meson.build

android/include/meson.build

@@ -0,0 +1,18 @@
+javac = find_program('javac')
+
+common_cppflags += '-I' + meson.current_build_dir()
+
+bridge_header = custom_target(
+  'org_musicpd_Bridge.h',
+  output: 'org_musicpd_Bridge.h',
+  input: [
+    '../app/src/main/java/org/musicpd/Bridge.java',
+  ],
+  command: [
+    join_paths(meson.current_source_dir(), 'run-javac.sh'),
+    javac,
+    join_paths(android_sdk_platform_dir, 'android.jar'),
+    '@OUTDIR@',
+    '@INPUT@',
+  ],
+)

android/include/run-javac.sh

@@ -0,0 +1,11 @@
+#!/bin/sh -e
+
+JAVAC=$1
+CLASSPATH=$2
+GENINCLUDE=$3
+
+"$JAVAC" -source 1.8 -target 1.8 -Xlint:-options \
+	 -cp "$CLASSPATH" \
+	 -h "$GENINCLUDE"  \
+	 "$4"
+