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3c51348aaf
This change moves away from a classical superbuild which downloads and builds at build time. Instead, we now follow a "Fetch Content" workflow (available as FetchContent in CMake 3.11+) and download dependencies at config time. Rationale: Superbuild projects have the disadvantage that projects cannot directly access their individual declared targets. This is not a problem with regular libraries, as those are usually/supposed to be installed. With Sandboxed API, this is not desirable, as it has dependencies like Abseil and glog, which are almost always consumed by including their source tree using add_subdirectory(). Fixes #10 and makes external embedding easier. PiperOrigin-RevId: 260129870 Change-Id: I70f295f29a6e4fc8c330512c94b01ef10c017166
34 lines
1.7 KiB
CMake
34 lines
1.7 KiB
CMake
# Copyright 2019 Google LLC. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# These options determine whether CMake should download the libraries that
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# Sandboxed API depends on at configure time.
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# The CMake script SapiDeps.cmake checks for the presence of certain build
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# targets to determine whether a library can be used. Disabling the options
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# below enables embedding projects to selectively override/replace these
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# dependencies. This is useful for cases where embedding projects already
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# depend on some of these libraries (e.g. Abseil).
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option(SAPI_USE_ABSL "Download Abseil at config time" ON)
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option(SAPI_USE_GOOGLETEST "Download googletest at config time" ON)
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option(SAPI_USE_GFLAGS "Download gflags at config time" ON)
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option(SAPI_USE_GLOG "Download glog at config time" ON)
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option(SAPI_USE_PROTOBUF "Download protobuf at config time" ON)
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option(SAPI_USE_LIBUNWIND "Download libunwind at config time" ON)
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# TODO(cblichmann): These two are not currently implemented
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option(SAPI_USE_LIBCAP "Download libcap at config time" ON)
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option(SAPI_USE_LIBFFI "Download libffi at config time" ON)
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option(SAPI_ENABLE_EXAMPLES "Build example code" ON)
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option(SAPI_ENABLE_TESTS "Build unit tests" ON)
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