sandboxed-api/cmake/SapiBuildDefs.cmake
Christian Blichmann d5ff466c59 Support passing stderrthreshold to sandboxee
PiperOrigin-RevId: 559769140
Change-Id: I57ad45e1155355e51a821d7903b2eb73dd1303ee
2023-08-24 08:58:26 -07:00

230 lines
8.2 KiB
CMake

# Copyright 2019 Google LLC
#
# 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
#
# https://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.
# Embeds arbitrary binary data into a static library.
#
# NAME specifies the name for this target.
# NAMESPACE is the C++ namespace the generated code is placed in. Can be empty.
# SOURCES is a list of files that should be embedded. If a source names a
# target the target binary is embedded instead.
macro(sapi_cc_embed_data)
cmake_parse_arguments(_sapi_embed "" "OUTPUT_NAME;NAME;NAMESPACE" "SOURCES"
${ARGN})
foreach(src IN LISTS _sapi_embed_SOURCES)
if(TARGET "${src}")
get_target_property(_sapi_embed_src_OUTPUT_NAME ${src} OUTPUT_NAME)
if(NOT _sapi_embed_src_OUTPUT_NAME)
set(_sapi_embed_src_OUTPUT_NAME "${src}")
endif()
list(APPEND _sapi_embed_in
"${CMAKE_CURRENT_BINARY_DIR}/${_sapi_embed_src_OUTPUT_NAME}")
else()
list(APPEND _sapi_embed_in "${src}")
endif()
endforeach()
file(RELATIVE_PATH _sapi_embed_pkg
"${PROJECT_BINARY_DIR}"
"${CMAKE_CURRENT_BINARY_DIR}")
if(NOT _sapi_embed_OUTPUT_NAME)
set(_sapi_embed_OUTPUT_NAME "${_sapi_embed_NAME}")
endif()
add_custom_command(
OUTPUT "${_sapi_embed_OUTPUT_NAME}.h"
"${_sapi_embed_OUTPUT_NAME}.cc"
WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
COMMAND filewrapper "${_sapi_embed_pkg}"
"${_sapi_embed_OUTPUT_NAME}"
"${_sapi_embed_NAMESPACE}"
"${CMAKE_CURRENT_BINARY_DIR}/${_sapi_embed_OUTPUT_NAME}.h"
"${CMAKE_CURRENT_BINARY_DIR}/${_sapi_embed_OUTPUT_NAME}.cc"
${_sapi_embed_in}
DEPENDS ${_sapi_embed_SOURCES}
VERBATIM
)
add_library("${_sapi_embed_NAME}" STATIC
"${_sapi_embed_OUTPUT_NAME}.h"
"${_sapi_embed_OUTPUT_NAME}.cc"
)
target_link_libraries("${_sapi_embed_NAME}" PRIVATE
sapi::base
absl::core_headers
)
endmacro()
# Adds a library target implementing a sandboxed API for another library.
# The first argument is the target name, similar to the native add_library().
# This function implements the same functionality as the Bazel version in
# sandboxed_api/bazel/sapi.bzl.
#
# SOURCES Any additional sources to include with the Sandboxed API library.
# Typically not necessary, unless the sandbox definition should be in a .cc
# file instead of the customary "sandbox.h" header. Bazel also has a "hdrs"
# attribute, but CMake does not distinguish headers from sources.
# FUNCTIONS A list of functions that to use in from host code. Leaving this
# list empty will export and wrap all functions found in the library.
# NOEMBED Whether the SAPI library should be embedded inside host code, so the
# SAPI Sandbox can be initialized with the
# ::sapi::Sandbox::Sandbox(FileToc*) constructor.
# LIBRARY The library target to sandbox and expose to the host code (required).
# LIBRARY_NAME The name of the class which will proxy the library functions
# from the functions list (required). You will call functions from the
# sandboxed library via instances of this class.
# INPUTS List of source files which the SAPI interface generator should scan
# for function declarations. Library header files are always scanned, so
# this can usually be empty/omitted.
# NAMESPACE C++ namespace identifier to place API class defined by
# LIBRARY_NAME into.
# HEADER If set, does not generate an interface header, but uses the one
# specified.
# API_VERSION Which version of the Sandboxed API to generate. Currently, only
# version "1" is defined.
function(add_sapi_library)
set(_sapi_opts NOEMBED)
set(_sapi_one_value HEADER LIBRARY LIBRARY_NAME NAMESPACE API_VERSION)
set(_sapi_multi_value SOURCES FUNCTIONS INPUTS)
cmake_parse_arguments(PARSE_ARGV 0 _sapi "${_sapi_opts}"
"${_sapi_one_value}" "${_sapi_multi_value}")
set(_sapi_NAME "${ARGV0}")
if(_sapi_API_VERSION AND NOT _sapi_API_VERSION VERSION_EQUAL "1")
message(FATAL_ERROR "API_VERSION \"1\" is the only one defined right now")
endif()
set(_sapi_gen_header "${_sapi_NAME}.sapi.h")
foreach(func IN LISTS _sapi_FUNCTIONS)
list(APPEND _sapi_exported_funcs "LINKER:--export-dynamic-symbol,${func}")
endforeach()
if(NOT _sapi_exported_funcs)
set(_sapi_exported_funcs LINKER:--allow-multiple-definition)
endif()
# The sandboxed binary
set(_sapi_bin "${_sapi_NAME}.bin")
add_executable("${_sapi_bin}"
"${SAPI_BINARY_DIR}/sapi_force_cxx_linkage.cc"
)
target_link_libraries("${_sapi_bin}" PRIVATE
-fuse-ld=gold
-Wl,--whole-archive "${_sapi_LIBRARY}" -Wl,--no-whole-archive
# Needs to be whole-archive due to how it Abseil registers flags
-Wl,--whole-archive absl::log_flags -Wl,--no-whole-archive
sapi::client
${CMAKE_DL_LIBS}
)
target_link_options("${_sapi_bin}" PRIVATE
LINKER:-E
${_sapi_exported_funcs}
)
if(NOT _sapi_NOEMBED)
set(_sapi_embed "${_sapi_NAME}_embed")
sapi_cc_embed_data(NAME "${_sapi_embed}"
NAMESPACE "${_sapi_NAMESPACE}"
SOURCES "${_sapi_bin}"
)
endif()
# Interface
list(JOIN _sapi_FUNCTIONS "," _sapi_funcs)
foreach(src IN LISTS _sapi_INPUTS)
get_filename_component(src "${src}" ABSOLUTE)
list(APPEND _sapi_full_inputs "${src}")
endforeach()
if(NOT _sapi_NOEMBED)
set(_sapi_embed_dir "${CMAKE_CURRENT_BINARY_DIR}")
set(_sapi_embed_name "${_sapi_NAME}")
endif()
list(APPEND _sapi_generator_args
"--sapi_name=${_sapi_LIBRARY_NAME}"
"--sapi_out=${_sapi_gen_header}"
"--sapi_embed_dir=${_sapi_embed_dir}"
"--sapi_embed_name=${_sapi_embed_name}"
"--sapi_functions=${_sapi_funcs}"
"--sapi_ns=${_sapi_NAMESPACE}"
)
if(SAPI_ENABLE_CLANG_TOOL)
set(_sapi_isystem_args ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES})
list(TRANSFORM _sapi_isystem_args PREPEND --extra-arg-before=-isystem)
if(SAPI_CLANG_TOOL_EXECUTABLE)
list(APPEND _sapi_generator_command "${SAPI_CLANG_TOOL_EXECUTABLE}")
else()
list(APPEND _sapi_generator_command sapi_generator_tool)
endif()
list(APPEND _sapi_generator_command
-p "${CMAKE_CURRENT_BINARY_DIR}"
${_sapi_generator_args}
${_sapi_isystem_args}
${_sapi_full_inputs}
)
add_custom_command(
OUTPUT "${_sapi_gen_header}"
COMMAND ${_sapi_generator_command}
COMMENT "Generating interface"
DEPENDS ${_sapi_INPUTS}
VERBATIM
)
else()
set(_sapi_isystem "${_sapi_NAME}.isystem")
list(JOIN _sapi_full_inputs "," _sapi_full_inputs)
list(APPEND _sapi_generator_command
"${SAPI_PYTHON3_EXECUTABLE}" -B
"${SAPI_SOURCE_DIR}/sandboxed_api/tools/generator2/sapi_generator.py"
${_sapi_generator_args}
"--sapi_isystem=${_sapi_isystem}"
"--sapi_in=${_sapi_full_inputs}"
)
add_custom_command(
OUTPUT "${_sapi_gen_header}" "${_sapi_isystem}"
COMMAND sh -c
"printf '${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES}' | \
sed \"s/;/\\n/g\" > \"${_sapi_isystem}\""
COMMAND ${_sapi_generator_command}
COMMENT "Generating interface"
DEPENDS ${_sapi_INPUTS}
VERBATIM
)
endif()
# Library with the interface
if(NOT _sapi_SOURCES)
list(APPEND _sapi_SOURCES
"${SAPI_BINARY_DIR}/sapi_force_cxx_linkage.cc"
)
endif()
add_library("${_sapi_NAME}" STATIC
"${_sapi_gen_header}"
${_sapi_SOURCES}
)
target_link_libraries("${_sapi_NAME}" PUBLIC
absl::status
absl::statusor
sapi::sapi
sapi::status
sapi::vars
)
if(NOT _sapi_NOEMBED)
target_link_libraries("${_sapi_NAME}" PUBLIC
"${_sapi_embed}"
)
endif()
endfunction()
# Wrapper for gtest_discover_tests to exclude tests discover when cross compiling.
macro(gtest_discover_tests_xcompile)
if (NOT CMAKE_CROSSCOMPILING)
gtest_discover_tests(${ARGV})
endif()
endmacro()