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Add zlib as dependency for examples
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
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@ -81,7 +81,12 @@ else()
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endif()
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if(SAPI_ENABLE_EXAMPLES)
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if(SAPI_DOWNLOAD_ZLIB)
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include(cmake/zlib/Download.cmake)
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check_target(ZLIB::ZLIB)
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else()
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find_package(ZLIB REQUIRED)
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endif()
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endif()
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# Find Python 3 and add its location to the cache so that its available in
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@ -29,5 +29,8 @@ option(SAPI_DOWNLOAD_LIBUNWIND "Download libunwind at config time" ON)
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option(SAPI_DOWNLOAD_LIBCAP "Download libcap at config time" ON)
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option(SAPI_DOWNLOAD_LIBFFI "Download libffi at config time" ON)
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# Options for building examples
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option(SAPI_ENABLE_EXAMPLES "Build example code" ON)
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option(SAPI_DOWNLOAD_ZLIB "Download zlib at config time (only if SAPI_ENABLE_EXAMPLES is set)" ON)
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option(SAPI_ENABLE_TESTS "Build unit tests" ON)
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30
cmake/zlib/CMakeLists.txt.in
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30
cmake/zlib/CMakeLists.txt.in
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@ -0,0 +1,30 @@
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# Copyright 2020 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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cmake_minimum_required(VERSION 3.12)
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project(zlib-download NONE)
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include(ExternalProject)
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ExternalProject_Add(zlib
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URL https://mirror.bazel.build/zlib.net/zlib-1.2.11.tar.gz
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URL_HASH SHA256=c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1 # 2020-04-23
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SOURCE_DIR "${CMAKE_BINARY_DIR}/zlib-src"
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PATCH_COMMAND patch -p1
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< "${CMAKE_SOURCE_DIR}/sandboxed_api/bazel/external/zlib.patch"
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CONFIGURE_COMMAND ""
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BUILD_COMMAND ""
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INSTALL_COMMAND ""
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TEST_COMMAND ""
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BUILD_IN_SOURCE TRUE
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)
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77
cmake/zlib/Download.cmake
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77
cmake/zlib/Download.cmake
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@ -0,0 +1,77 @@
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# Copyright 2020 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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# Downloads and unpacks Abseil at configure time
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set(workdir "${CMAKE_BINARY_DIR}/zlib-download")
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configure_file("${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt.in"
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"${workdir}/CMakeLists.txt")
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execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
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RESULT_VARIABLE error
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WORKING_DIRECTORY "${workdir}")
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if(error)
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message(FATAL_ERROR "CMake step for ${PROJECT_NAME} failed: ${error}")
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endif()
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execute_process(COMMAND ${CMAKE_COMMAND} --build .
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RESULT_VARIABLE error
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WORKING_DIRECTORY "${workdir}")
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if(error)
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message(FATAL_ERROR "Build step for ${PROJECT_NAME} failed: ${error}")
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endif()
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set(_zlib_src "${CMAKE_BINARY_DIR}/zlib-src")
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set(ZLIB_INCLUDE_DIRS ${_zlib_src})
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add_library(z STATIC
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${_zlib_src}/adler32.c
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${_zlib_src}/compress.c
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${_zlib_src}/crc32.c
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${_zlib_src}/crc32.h
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${_zlib_src}/deflate.c
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${_zlib_src}/deflate.h
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${_zlib_src}/gzclose.c
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${_zlib_src}/gzguts.h
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${_zlib_src}/gzlib.c
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${_zlib_src}/gzread.c
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${_zlib_src}/gzwrite.c
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${_zlib_src}/infback.c
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${_zlib_src}/inffast.c
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${_zlib_src}/inffast.h
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${_zlib_src}/inffixed.h
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${_zlib_src}/inflate.c
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${_zlib_src}/inflate.h
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${_zlib_src}/inftrees.c
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${_zlib_src}/inftrees.h
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${_zlib_src}/trees.c
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${_zlib_src}/trees.h
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${_zlib_src}/uncompr.c
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${_zlib_src}/zconf.h
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${_zlib_src}/zlib.h
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${_zlib_src}/zutil.c
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${_zlib_src}/zutil.h
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)
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add_library(ZLIB::ZLIB ALIAS z)
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target_include_directories(z PUBLIC
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${_zlib_src}
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)
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target_compile_options(z PRIVATE
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-w
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-Dverbose=-1
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)
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target_link_libraries(z PRIVATE
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sapi::base
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)
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@ -15,4 +15,5 @@
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if(SAPI_ENABLE_EXAMPLES)
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add_subdirectory(stringop)
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add_subdirectory(sum)
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add_subdirectory(zlib)
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endif()
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42
sandboxed_api/examples/zlib/CMakeLists.txt
Normal file
42
sandboxed_api/examples/zlib/CMakeLists.txt
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@ -0,0 +1,42 @@
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# Copyright 2020 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/examples/zlib:zlib-sapi
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add_sapi_library(zlib-sapi
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FUNCTIONS deflateInit_
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deflate
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deflateEnd
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INPUTS ${ZLIB_INCLUDE_DIRS}/zlib.h
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LIBRARY ZLIB::ZLIB
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LIBRARY_NAME Zlib
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NAMESPACE "sapi::zlib"
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)
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add_library(sapi::zlib_sapi ALIAS zlib-sapi)
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target_link_libraries(zlib-sapi PRIVATE
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ZLIB::ZLIB
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)
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# sandboxed_api/examples/zlib:main_zlib
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add_executable(main_zlib
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main_zlib.cc
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)
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target_link_libraries(main_zlib PRIVATE
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sapi::base
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glog::glog
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sapi::flags
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sapi::sapi
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sapi::status
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sapi::statusor
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sapi::zlib_sapi
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)
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@ -37,5 +37,4 @@ add_executable(zpipe
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add_executable(sandbox2::zpipe ALIAS zpipe)
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target_link_libraries(zpipe PRIVATE
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ZLIB::ZLIB
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-static # Fully static link
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)
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