Added .podspec file for libFuzzer (#1338)

* Added .podspec file for libFuzzer

* The libFuzzer pod does not include the `main()` function to allow
  the pod to be built independently.
* Fuzzing applications must provide both the `main()` function and
  the `LLVMFuzzerTestOneInput` function. The `main()` function should
  call `fuzzer::FuzzerDriver(...)` similar to the original `FuzzerMain.cpp`.
* LLVM License and authors

1 files changed, 45 insertions, 0 deletions

diff --git a/Firestore/Example/LibFuzzer.podspec b/Firestore/Example/LibFuzzer.podspec
new file mode 100644
index 0000000..0f677f5
--- /dev/null
+++ b/Firestore/Example/LibFuzzer.podspec
@@ -0,0 +1,45 @@
+# Copyright 2018 Google
+#
+# 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.
+
+# A podspec for libFuzzer. Excludes the 'FuzzerMain.cpp' because the pod
+# installation would require the 'LLVMFuzzerTestOneInput' function to be
+# linked when the pod is being created, but it will be available in
+# the fuzzing application. Hence, users of this Pod are required to
+# provide their main function similar to 'FuzzerMain.cpp'.
+# See the build script of libFuzzer for more details:
+# https://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer/build.sh
+
+Pod::Spec.new do |s|
+  s.name                = 'LibFuzzer'
+  s.version             = '1.0'
+  s.summary             = 'libFuzzer for fuzz testing'
+  s.homepage            = 'https://llvm.org/docs/LibFuzzer.html'
+  s.license             = { :type => 'BSD-Like' }
+  s.authors             = 'LLVM Team'
+
+  # Check out only libFuzzer folder.
+  s.source              = {
+    :svn => 'https://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer'
+  }
+
+  # Add all source files, except for the FuzzerMain.cpp.
+  s.source_files        = '*.{h,cpp,def}'
+  s.exclude_files       = 'FuzzerMain.cpp'
+
+  s.library             = 'c++'
+
+  s.pod_target_xcconfig = {
+    'CLANG_CXX_LANGUAGE_STANDARD' => 'c++11'
+  }
+end