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f44cca6c98
When embedding SAPI in an external CMake project, the version of
`protobuf_generate_cpp` that we lifted from upstream protobuf produces
the wrong generated file paths.
For example, given this project structure:
```
/parent/
+-- myproject/
+-- myproject_build/ <- CMake build directory
+-- sandboxed-api/ <- Checkout from GitHub
```
And a CMake file in `myproject/CMakeLists.txt` that embeds SAPI like
this:
```
cmake_minimum_required(VERSION 3.12)
project(SandboxedTest LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
add_subdirectory(
${PROJECT_SOURCE_DIR}/../sandboxed-api
${PROJECT_BINARY_DIR}/sandboxed-api
)
```
Then `protobuf_generate_cpp` correctly invokes the protoc compiler to
generate
`/parent/myproject_build/sandboxed-api/sandboxed_api/proto_arg.proto.pb.cc'.
However, the path of the generated source file that is passed to the C++
compiler will be
`/parent/myproject_build/sandboxed-api/sandboxed_api/../../myproject_build/sandboxed-api/sandboxed_api/proto_arg.pb.cc`.
Note the duplicated project build directory component in the
canonicalized version:
`/parent/myproject_build/myproject_build/sandboxed-api/sandboxed_api/proto_arg.pb.cc`.
This change simple omits the computation of any relative file paths and
simply uses `_pb_PROTOC_OUT_DIR` which defauls to
`CMAKE_CURRENT_BINARY_DIR`, which should always contain the correct
path.
Signed-off-by: Christian Blichmann <mail@blichmann.eu>
55 lines
1.5 KiB
CMake
55 lines
1.5 KiB
CMake
# Copyright 2019 Google LLC
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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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# sandboxed_api/sandbox2/unwind:ptrace_hook
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add_library(sandbox2_ptrace_hook STATIC
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ptrace_hook.cc
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ptrace_hook.h
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)
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add_library(sandbox2::ptrace_hook ALIAS sandbox2_ptrace_hook)
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target_link_libraries(sandbox2_ptrace_hook PRIVATE
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sapi::base
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)
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# sandboxed_api/sandbox2/unwind:unwind
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add_library(sandbox2_unwind STATIC
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unwind.cc
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unwind.h
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)
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add_library(sandbox2::unwind ALIAS sandbox2_unwind)
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target_link_libraries(sandbox2_unwind PRIVATE
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sandbox2::comms
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sandbox2::maps_parser
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sandbox2::minielf
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sandbox2::strerror
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sandbox2::unwind_proto
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sapi::base
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sapi::raw_logging
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unwind::unwind_ptrace_wrapped
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)
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# sandboxed_api/sandbox2/unwind:unwind_proto
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sapi_protobuf_generate_cpp(_sandbox2_unwind_pb_h _sandbox2_unwind_pb_cc
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unwind.proto
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)
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add_library(sandbox2_unwind_proto STATIC
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${_sandbox2_unwind_pb_cc}
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${_sandbox2_unwind_pb_h}
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)
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add_library(sandbox2::unwind_proto ALIAS sandbox2_unwind_proto)
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target_link_libraries(sandbox2_unwind_proto PRIVATE
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protobuf::libprotobuf
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sapi::base
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)
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