[CocoaPods] Add podspec

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: ci
+
+on:
+  push:
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  swift-build-run:
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build
+      run: swift build
+
+  cocoapods:
+      strategy:
+          matrix:
+            platform: [ios, tvos, macos, watchos]
+      runs-on: macOS-latest
+      steps:
+      - uses: actions/checkout@v2
+      - name: Build
+        # Some header files import C++ headers, which causes linting failures
+        # (https://github.com/CocoaPods/CocoaPods/issues/5152). As a
+        # workaround, the `--skip-import-validation` is used.
+        run: |
+          pod lib lint leveldb-library.podspec \
+            --platforms=${{ matrix.platform }} \
+            --skip-import-validation

leveldb-library.podspec

@@ -0,0 +1,61 @@
+Pod::Spec.new do |s|
+  s.name         =  'leveldb-library'
+  s.version      =  '1.22.3'
+  s.license      =  'New BSD'
+  s.summary      =  'A fast key-value storage library '
+  s.description  =  'LevelDB is a fast key-value storage library written at Google that provides ' +
+                    'an ordered mapping from string keys to string values.'
+  s.homepage     =  'https://github.com/google/leveldb'
+  s.authors      =  'The LevelDB Authors'
+
+  s.ios.deployment_target = '11.0'
+  s.osx.deployment_target = '10.13'
+  s.tvos.deployment_target = '11.0'
+  s.watchos.deployment_target = '6.0'
+
+  s.source       =  {
+    :git => 'https://github.com/firebase/leveldb.git',
+    :tag => s.version.to_s
+  }
+
+  s.requires_arc = false
+
+  s.pod_target_xcconfig = {
+    'GCC_PREPROCESSOR_DEFINITIONS' => 'LEVELDB_IS_BIG_ENDIAN=0 ' +
+                                      'LEVELDB_PLATFORM_POSIX ' +
+                                      'HAVE_FULLFSYNC=1',
+    'HEADER_SEARCH_PATHS' => '"${PODS_TARGET_SRCROOT}"',
+
+    # Disable warnings introduced by Xcode 8.3 and Xcode 9
+    # The deprecated-declarations is for OSMemoryBarrier on tvOS
+    'WARNING_CFLAGS' => '-Wno-shorten-64-to-32 -Wno-comma -Wno-unreachable-code ' +
+                        '-Wno-conditional-uninitialized -Wno-deprecated-declarations',
+
+    # Prevent naming conflicts between leveldb headers and system headers
+    'USE_HEADERMAP' => 'No',
+  }
+
+  s.header_dir = "leveldb"
+  s.source_files = [
+    "db/*.{cc,h}",
+    "port/*.{cc,h}",
+    "table/*.{cc,h}",
+    "util/*.{cc,h}",
+    "include/leveldb/*.h"
+  ]
+
+  s.public_header_files = [
+    "include/leveldb/*.h"
+  ]
+
+  s.exclude_files = [
+    "**/*_test.cc",
+    "**/*_bench.cc",
+    "db/leveldbutil.cc",
+    "util/env_windows.cc",
+    "util/testutil.cc"
+  ]
+
+  s.library = 'c++'
+end
+