#4522 Conan package support (#4590)

- Added Conan recipe to build Flatbuffers
- Added Travis job to create Conan package

Signed-off-by: Uilian Ries <uilianries@gmail.com>

.travis.yml

@@ -40,7 +40,7 @@ matrix:
       env:
         matrix:
           - BUILD_TYPE=Debug BIICODE=false
-          - BUILD_TYPE=Release BIICODE=false
+          - BUILD_TYPE=Release BIICODE=false CONAN=true
           # biicode .deb files no longer available.
           # - BUILD_TYPE=Release BIICODE=true
           # - BUILD_TYPE=Debug BIICODE=true
@@ -56,6 +56,7 @@ matrix:
       script:
       - if [ "$BIICODE" == "false" ]; then cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE . && make && make test; fi
       - if [ "$BIICODE" == "true" ] && [ "$TRAVIS_OS_NAME" == "linux" ]; then ./biicode/support/bii-travis.sh $BUILD_TYPE; fi
+      - if [ "$CONAN" == "true" ] && [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo pip install conan && conan create . flatbuffers/testing -s build_type=$BUILD_TYPE; fi
 
     - language: android
       sudo: true

conanfile.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""Conan recipe package for Google FlatBuffers
+"""
+import os
+from conans import ConanFile, CMake, tools
+
+
+class FlatbuffersConan(ConanFile):
+    name = "flatbuffers"
+    version = "1.8.0"
+    license = "https://github.com/google/flatbuffers/blob/master/LICENSE.txt"
+    url = "https://github.com/google/flatbuffers"
+    description = "Memory Efficient Serialization Library"
+    settings = "os", "compiler", "build_type", "arch", "os_build", "arch_build"
+    options = {"shared": [True, False]}
+    default_options = "shared=False"
+    generators = "cmake"
+    exports = "LICENSE.txt"
+    exports_sources = ["CMake/*", "include/*", "src/*", "grpc/*", "CMakeLists.txt"]
+
+    def _inject_magic_lines(self):
+        """Inject Conan setup in cmake file to solve exteral dependencies.
+        """
+        conan_magic_lines = '''project(FlatBuffers)
+        include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+        conan_basic_setup()
+        '''
+        tools.replace_in_file("CMakeLists.txt", "project(FlatBuffers)", conan_magic_lines)
+
+    def build(self):
+        """Configure, build and install FlatBuffers using CMake.
+        """
+        self._inject_magic_lines()
+        cmake = CMake(self)
+        cmake.definitions["FLATBUFFERS_BUILD_TESTS"] = False
+        cmake.definitions["FLATBUFFERS_BUILD_SHAREDLIB"] = self.options.shared
+        cmake.configure()
+        cmake.build()
+        cmake.install()
+
+    def package(self):
+        """Copy Flatbuffers' artifacts to package folder
+        """
+        self.copy(pattern="LICENSE.txt", dst="licenses")
+        self.copy(pattern="flathash*", dst="bin", src="bin")
+
+    def package_info(self):
+        """Collect built libraries names and solve flatc path.
+        """
+        self.cpp_info.libs = tools.collect_libs(self)
+        self.env_info.PATH.append(os.path.join(self.package_folder, "bin"))