Compile for apple targets

Author: simolus3

.github/workflows/compile_sqlite.yml

@@ -45,7 +45,7 @@ jobs:
         # We only really need this for Ubuntu, but we recommend users run the same
         # steps so we better make sure they work on all platforms.
         #os: [ubuntu-latest, macos-latest, windows-latest]
-        os: [ubuntu-latest]
+        os: [ubuntu-latest, macos-latest]
 
     runs-on: ${{ matrix.os }}
     name: Compile sqlite3
@@ -73,7 +73,6 @@ jobs:
         run: |
           sudo apt install -y gcc-aarch64-linux-gnu gcc-riscv64-linux-gnu gcc-arm-linux-gnueabihf gcc-i686-linux-gnu
 
-
       - name: Compile sqlite3
 #        if: steps.cache_build.outputs.cache-hit != 'true'
         run: |

tool/compile_sqlite.dart

@@ -16,6 +16,12 @@ void main() async {
         for (final sqlite3mc in [false, true])
           _compileLinux(compiler, abi, sqlite3mc)
     ], eagerError: true);
+  } else if (Platform.isMacOS) {
+    await Future.wait([
+      for (final (triple, name) in _appleAbis)
+        for (final sqlite3mc in [false, true])
+          _compileApple(triple, name, sqlite3mc)
+    ], eagerError: true);
   }
 }
 
@@ -48,6 +54,31 @@ Future<void> _compileLinux(
   }
 }
 
+Future<void> _compileApple(
+    String triple, String prefix, bool sqlite3Ciphers) async {
+  final args = [
+    '-target',
+    triple,
+    '-shared',
+    '-O3',
+    ...defines,
+    sqlite3Ciphers
+        ? 'sqlite3-src/sqlite3mc/sqlite3mc_amalgamation.c'
+        : 'sqlite3-src/sqlite3/sqlite3.c',
+    '-I',
+    sqlite3Ciphers ? 'sqlite3-src/sqlite3mc/' : 'sqlite3-src/sqlite3',
+    '-o',
+    'out/$prefix-sqlite3${sqlite3Ciphers ? 'mc' : ''}.dylib',
+  ];
+
+  print('Running clang ${args.join(' ')}');
+  final result = await Process.run('clang', args);
+
+  if (result.exitCode != 0) {
+    throw 'Compiling for $triple (ciphers: $sqlite3Ciphers) failed: ${result.stdout}\n ${result.stderr}';
+  }
+}
+
 const _linuxAbis = [
   ('x86_64-linux-gnu-gcc', 'x64'),
   ('i686-linux-gnu-gcc', 'x86'),
@@ -56,6 +87,14 @@ const _linuxAbis = [
   ('riscv64-linux-gnu-gcc', 'riscv64gc'),
 ];
 
+const _appleAbis = [
+  ('aarch64-apple-macos', 'macos-aarch64'),
+  ('x86_64-apple-macos', 'macos-x64'),
+  ('x86_64-apple-ios13.0-simulator', 'ios-sim-x64'),
+  ('arm64-apple-ios13.0-simulator', 'ios-sim-aarch64'),
+  ('arm64-apple-ios13.0', 'ios-aarch64'),
+];
+
 // Keep in sync with sqlite3/lib/src/hook/description.dart
 const _defaultDefines = '''
   SQLITE_ENABLE_DBSTAT_VTAB

tool/download_sqlite.dart

@@ -7,6 +7,8 @@ const sqliteMultipleCiphersSource =
 
 const tmpDir = 'tmp';
 
+/// This runs as part of a GitHub actions workflow in this repository. It's not
+/// really supposed to be used outside of that.
 void main(List<String> args) async {
   await Directory(tmpDir).create();