bsdiff: migrate to BUILD.gn from bsdiff.gyp

Also use the static libraries as bsdiff and bspatch are not used anywhere else
other than the update_engine and puffin's binaries which won't go into the base
images.

Bug: crbug.com/891899
Test: sudo FEATUERS=test emerge bsdiff update_engine
Change-Id: I41ddfc48fd24a67a8792c9cb99f4c3a0ae0fc906

2 files changed, 171 insertions, 190 deletions

diff --git a/BUILD.gn b/BUILD.gn
new file mode 100644
index 0000000..a65dbda
--- /dev/null
+++ b/BUILD.gn
@@ -0,0 +1,171 @@
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//common-mk/pkg_config.gni")
+
+group("all") {
+  deps = [
+    ":bsdiff",
+    ":bspatch",
+    ":libbsdiff",
+    ":libbspatch",
+  ]
+  if (use.test) {
+    deps += [ ":bsdiff_test" ]
+  }
+  if (use.fuzzer) {
+    deps += [ ":bspatch_fuzzer" ]
+  }
+}
+
+pkg_config("target_defaults") {
+  pkg_deps = []
+  cflags = [
+    "-Wextra",
+    "-Wno-unused-parameter",
+  ]
+  cflags_cc = [ "-Wnon-virtual-dtor" ]
+  defines = [ "_FILE_OFFSET_BITS=64" ]
+  include_dirs = [
+      "include",
+      # We need this include dir because we include all the local code as
+      # "bsdiff/...".
+      "${platform2_root}/../aosp/external",
+  ]
+  libs = [ "-lbz2" ]
+}
+
+pkg_config("libbspatch_config") {
+  pkg_deps = [ "libbrotlidec" ]
+}
+
+static_library("libbspatch") {
+  configs += [
+   "//common-mk:nouse_thin_archive",
+   ":target_defaults",
+   ":libbspatch_config"
+  ]
+  configs -= [ "//common-mk:use_thin_archive" ]
+  sources = [
+    "brotli_decompressor.cc",
+    "bspatch.cc",
+    "buffer_file.cc",
+    "bz2_decompressor.cc",
+    "decompressor_interface.cc",
+    "extents.cc",
+    "extents_file.cc",
+    "file.cc",
+    "logging.cc",
+    "memory_file.cc",
+    "patch_reader.cc",
+    "sink_file.cc",
+    "utils.cc",
+  ]
+}
+
+executable("bspatch") {
+  configs += [ ":target_defaults" ]
+  deps = [ ":libbspatch" ]
+  sources = [
+    "bspatch_main.cc",
+  ]
+}
+
+pkg_config("libbsdiff_config") {
+  pkg_deps = [
+    "libbrotlienc",
+    "libdivsufsort",
+    "libdivsufsort64",
+  ]
+}
+
+static_library("libbsdiff") {
+  configs += [
+    "//common-mk:nouse_thin_archive",
+    ":target_defaults",
+    ":libbsdiff_config",
+  ]
+  configs -= [ "//common-mk:use_thin_archive" ]
+  sources = [
+    "brotli_compressor.cc",
+    "bsdiff.cc",
+    "bz2_compressor.cc",
+    "compressor_buffer.cc",
+    "diff_encoder.cc",
+    "endsley_patch_writer.cc",
+    "logging.cc",
+    "patch_writer.cc",
+    "patch_writer_factory.cc",
+    "split_patch_writer.cc",
+    "suffix_array_index.cc",
+  ]
+}
+
+executable("bsdiff") {
+  configs += [ ":target_defaults" ]
+  deps = [ ":libbsdiff" ]
+  sources = [
+    "bsdiff_arguments.cc",
+    "bsdiff_main.cc",
+  ]
+}
+
+if (use.test) {
+  pkg_config("bsdiff_test_config") {
+    pkg_deps = [ "libchrome-${libbase_ver}" ]
+  }
+  executable("bsdiff_test") {
+    configs += [
+      "//common-mk:test",
+      ":target_defaults",
+      ":bsdiff_test_config",
+    ]
+    deps = [
+      "//common-mk/testrunner",
+      ":libbspatch",
+      ":libbsdiff",
+    ]
+    sources = [
+      "brotli_compressor_unittest.cc",
+      "brotli_decompressor_unittest.cc",
+      "bsdiff_arguments.cc",
+      "bsdiff_arguments_unittest.cc",
+      "bsdiff_unittest.cc",
+      "bspatch_unittest.cc",
+      "bz2_decompressor_unittest.cc",
+      "diff_encoder_unittest.cc",
+      "endsley_patch_writer_unittest.cc",
+      "extents_file_unittest.cc",
+      "extents_unittest.cc",
+      "patch_reader_unittest.cc",
+      "patch_writer_unittest.cc",
+      "split_patch_writer_unittest.cc",
+      "suffix_array_index_unittest.cc",
+      "test_utils.cc",
+    ]
+  }
+}
+
+if (use.fuzzer) {
+  executable("bspatch_fuzzer") {
+    configs += [
+      "//common-mk/common_fuzzer",
+      ":target_defaults",
+    ]
+    deps = [ ":libbspatch" ]
+    sources = [
+      "bspatch_fuzzer.cc",
+    ]
+  }
+}
diff --git a/bsdiff.gyp b/bsdiff.gyp
deleted file mode 100644
index 65802f4..0000000
--- a/bsdiff.gyp
+++ /dev/null
@@ -1,190 +0,0 @@
-# Copyright (C) 2017 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-{
-  'target_defaults': {
-    'cflags': [
-      '-Wextra',
-      '-Wno-unused-parameter',
-    ],
-    'cflags_cc': [
-      '-Wnon-virtual-dtor',
-    ],
-    'include_dirs': [
-      'include',
-      # We need this include dir because we include all the local code as
-      # "bsdiff/...".
-      '<(platform2_root)/../aosp/external',
-    ],
-    'defines': [
-      '_FILE_OFFSET_BITS=64',
-    ],
-  },
-  'targets': [
-    # bsdiff static library
-    {
-      'target_name': 'libbsdiff-static',
-      'type': 'static_library',
-      'cflags!': ['-fPIE'],
-      'cflags': ['-fPIC'],
-      'all_dependent_settings': {
-        'link_settings': {
-          'libraries': [
-            '-lbz2',
-            '-lbrotlienc',
-            '-ldivsufsort',
-            '-ldivsufsort64',
-          ],
-        },
-      },
-      'sources': [
-        'brotli_compressor.cc',
-        'bsdiff.cc',
-        'bz2_compressor.cc',
-        'compressor_buffer.cc',
-        'diff_encoder.cc',
-        'endsley_patch_writer.cc',
-        'logging.cc',
-        'patch_writer.cc',
-        'patch_writer_factory.cc',
-        'split_patch_writer.cc',
-        'suffix_array_index.cc',
-      ],
-    },
-    # bsdiff shared library
-    {
-      'target_name': 'libbsdiff',
-      'type': 'shared_library',
-      'dependencies': [
-        'libbsdiff-static',
-      ],
-    },
-    # bsdiff executable
-    {
-      'target_name': 'bsdiff',
-      'type': 'executable',
-      'dependencies': [
-        'libbsdiff',
-      ],
-      'sources': [
-        'bsdiff_arguments.cc',
-        'bsdiff_main.cc',
-      ],
-    },
-    # bspatch static library
-    {
-      'target_name': 'libbspatch-static',
-      'type': 'static_library',
-      'cflags!': ['-fPIE'],
-      'cflags': ['-fPIC'],
-      'all_dependent_settings': {
-        'link_settings': {
-          'libraries': [
-            '-lbz2',
-            '-lbrotlidec',
-          ],
-        },
-      },
-      'sources': [
-        'brotli_decompressor.cc',
-        'bspatch.cc',
-        'buffer_file.cc',
-        'bz2_decompressor.cc',
-        'decompressor_interface.cc',
-        'extents.cc',
-        'extents_file.cc',
-        'file.cc',
-        'logging.cc',
-        'memory_file.cc',
-        'patch_reader.cc',
-        'sink_file.cc',
-        'utils.cc',
-      ],
-    },
-    # bspatch shared library
-    {
-      'target_name': 'libbspatch',
-      'type': 'shared_library',
-      'dependencies': [
-        'libbspatch-static',
-      ],
-    },
-    # bspatch executable
-    {
-      'target_name': 'bspatch',
-      'type': 'executable',
-      'dependencies': [
-        'libbspatch',
-      ],
-      'sources': [
-        'bspatch_main.cc',
-      ],
-    },
-  ],
-  'conditions': [
-    ['USE_test == 1', {
-      'targets': [
-        {
-          'target_name': 'bsdiff_unittest',
-          'type': 'executable',
-          'dependencies': [
-            'libbsdiff-static',
-            'libbspatch-static',
-            '../common-mk/testrunner.gyp:testrunner',
-          ],
-          'variables': {
-            'deps': [
-              'libchrome-<(libbase_ver)',
-            ],
-          },
-          'includes': ['../common-mk/common_test.gypi'],
-          'sources': [
-            'brotli_compressor_unittest.cc',
-            'brotli_decompressor_unittest.cc',
-            'bsdiff_arguments.cc',
-            'bsdiff_arguments_unittest.cc',
-            'bsdiff_unittest.cc',
-            'bspatch_unittest.cc',
-            'bz2_decompressor_unittest.cc',
-            'diff_encoder_unittest.cc',
-            'endsley_patch_writer_unittest.cc',
-            'extents_file_unittest.cc',
-            'extents_unittest.cc',
-            'patch_reader_unittest.cc',
-            'patch_writer_unittest.cc',
-            'split_patch_writer_unittest.cc',
-            'suffix_array_index_unittest.cc',
-            'test_utils.cc',
-          ],
-        },
-      ],
-    }],
-    # fuzzer target
-    ['USE_fuzzer == 1', {
-      'targets': [
-        {
-          'target_name': 'bspatch_fuzzer',
-          'type': 'executable',
-          'dependencies': [
-            'libbspatch-static',
-          ],
-          'includes': ['../../platform2/common-mk/common_fuzzer.gypi'],
-          'sources': [
-            'bspatch_fuzzer.cc',
-          ],
-        },
-      ],
-    }],
-  ],
-}