This is done by simply building libffi in-tree. Normally, this is not
desirable, but in our case is actually ok, as this is an external
dependency to be pulled in and cleaning the source tree is easy in this
case.
Signed-off-by: Christian Blichmann <mail@blichmann.eu>
- Extract dependent types directly from the Clang AST and re-serialize
back into compilable code
- Collect types and emit diagnostics
- Format generated code
Signed-off-by: Christian Blichmann <mail@blichmann.eu>
When using SAPI from an external project via CMake, the small zlib patch
cannot be found during the config phase.
This change also fixes an oversight in that the tests depend on some of
the example code.
Regardless embedding code should set `SAPI_ENABLE_EXAMPLES` to `OFF`.
Disabling tests by setting `SAPI_ENABLE_TESTS` to `OFF` stays optional.
PiperOrigin-RevId: 311290454
Change-Id: Ibe105895859b793b20f47c89b1a9e11cbfef2e2f
Similar to what the Bazel build does, this change adds zlib as an additional
dependency when `SAPI_ENABLE_EXAMPLES` is set to `ON`.
PiperOrigin-RevId: 309203959
Change-Id: I201a9e6415789afb1e058bc48cebbc0fc0004fe9
Abseil insists on having a Google Test directory, even if we're not going to
run (or even build) the tests.
This changes forces all test settings to `OFF` just for Abseil, allowing
SAPI builds to complete normally. Embedding projects should not be affected,
if they already included Abseil.
PiperOrigin-RevId: 309035680
Change-Id: Ie46297d8b502d92d0c10ef04360e992bcee4964b
Drive-by:
- Make Bazel config action more robust
- Disable dependency tracking in libunwind configure
Signed-off-by: Christian Blichmann <mail@blichmann.eu>
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>
Add the location of the Python 3 interpreter to the CMake cache so
that its available in the `add_sapi_library()` macro in downstream
embedding projects.
Signed-off-by: Christian Blichmann <mail@blichmann.eu>
- Same upstream dependency versions for CMake and Bazel
- Use maybe() from build_defs to conditionally define Bazel repositories
PiperOrigin-RevId: 282331418
Change-Id: I8a7db84a1d3115f3c1f31cc1dfcc8c29fe391a62
This fixes some CMake-3.12+-isms, like `list(JOIN ...)` and setting link
properties on OBJECT libraries.
PiperOrigin-RevId: 265033725
Change-Id: I0ee1ec0e1b1097ea8226ad6fdeff794a97c2881b
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
* Move add_sapi_library() into a build defs file
* Override protobuf_generate_cpp() instead of naming it sapi_protobuf_generate_cpp()
* Factor out inclusion/find_package() calls of external dependencies
PiperOrigin-RevId: 258133422
Change-Id: Ibdbab0c735157eac0ed6122ab78f9d583c6905cc
* Implement add_sapi_library() similar to the Bazel rule
* Fix SuperBuild so that glog properly depends on gflags (needed for --logtostderr)
* Raise minimum required version of CMake to 3.10 (Ubuntu 18.04 LTS)
* Update sum sandbox policy to allow to get IDs and PIDs
PiperOrigin-RevId: 258124160
Change-Id: I64c2f8b27a3e842874adca9100bfce20a2b74f17
This change also tries to make the build more idempotent wrt to embedding projects.
PiperOrigin-RevId: 257177255
Change-Id: I291cd02840496db901f829e902623887f6e0eb10
Since the interface generator is invoked via a Bazel macro, it will be
expanded in the embedding context of the project using SAPI, so package access
needs to go through the full workspace root @com_google_sandboxed_api.
This change also modifies the CMakeLists.txt accordingly, as the "external"
subdirectory is no longer needed/wanted.
PiperOrigin-RevId: 255918784
Change-Id: I052c687509f65fef7f011a9d1a074a171595330f
- Add a superbuild in cmake/SuperBuild.cmake that downloads and builds
dependencies
- Builds for sandbox2/ and a its tests
- Helper CMake function to strip proto paths
- Module to find libcap
- Custom build for libunwind that wraps its symbols
- Fix environment so that CTest executes tests similar to Bazel
- Filewrapper functionality, like Bazel's cc_embed_data()
- Build forkserver with embedded binary
- Enable ASM language so that libunwind builds correctly
- Allow glog target to propagate transitively (to propagate its include dirs)
Signed-off-by: Christian Blichmann <cblichmann@google.com>
