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sandboxed-api/cmake/libunwind.cmake
Christian Blichmann 41e0ca0a68 CMake: Use min v3.13 and FetchContent 
This updates the mininum required version of CMake to 3.13, which is
present in Debian Buster.

At the same time, move all of our dependency handling to use
`FetchContent_Declare()`, `FetchContent_Populate()` and
`FetchContent_MakeAvailable()`. Since the latter was ony introduced in
3.14, provide a simple "polyfill" implementation for that.

As an added benefit, the configure step for libffi and libunwind will
now not be re-run every time the `CMakeLists.txt` changes.

Other changes:
- Explicitly spell out that we're testing up to 3.22 in
  `cmake_minimum_version()`
- Rename `check_target()` to `sapi_check_target()` to avoid conflicts
  with Abseil.
2022-01-25 13:59:45 +01:00

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# 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
#
# http://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.
FetchContent_Declare(libunwind
URL https://github.com/libunwind/libunwind/releases/download/v1.6.2/libunwind-1.6.2.tar.gz
URL_HASH SHA256=4a6aec666991fb45d0889c44aede8ad6eb108071c3554fcdff671f9c94794976
)
FetchContent_GetProperties(libunwind)
if(NOT libunwind_POPULATED)
FetchContent_Populate(libunwind)
set(libunwind_STATUS_FILE "${libunwind_SOURCE_DIR}/config.status")
if(EXISTS "${libunwind_STATUS_FILE}")
file(SHA256 "${libunwind_STATUS_FILE}" _sapi_CONFIG_STATUS)
endif()
if(NOT _sapi_CONFIG_STATUS STREQUAL "${libunwind_CONFIG_STATUS}")
message("-- Running ./configure for libunwind...")
execute_process(
COMMAND ./configure --disable-dependency-tracking
--disable-minidebuginfo
--disable-shared
--enable-ptrace
--quiet
WORKING_DIRECTORY "${libunwind_SOURCE_DIR}"
RESULT_VARIABLE _sapi_libunwind_config_result
)
if(NOT _sapi_libunwind_config_result EQUAL "0")
message(FATAL_ERROR "Configuration of libunwind dependency failed")
endif()
file(SHA256 "${libunwind_SOURCE_DIR}/config.status" _sapi_CONFIG_STATUS)
set(libunwind_CONFIG_STATUS "${_sapi_CONFIG_STATUS}" CACHE INTERNAL "")
endif()
endif()
if(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
set(_unwind_cpu "x86_64")
list(APPEND _unwind_platform_srcs
${libunwind_SOURCE_DIR}/src/x86_64/Gcreate_addr_space.c
${libunwind_SOURCE_DIR}/src/x86_64/Gglobal.c
${libunwind_SOURCE_DIR}/src/x86_64/Ginit.c
${libunwind_SOURCE_DIR}/src/x86_64/Gos-linux.c
${libunwind_SOURCE_DIR}/src/x86_64/Gregs.c
${libunwind_SOURCE_DIR}/src/x86_64/Gresume.c
${libunwind_SOURCE_DIR}/src/x86_64/Gstash_frame.c
${libunwind_SOURCE_DIR}/src/x86_64/Gstep.c
${libunwind_SOURCE_DIR}/src/x86_64/is_fpreg.c
${libunwind_SOURCE_DIR}/src/x86_64/setcontext.S
)
list(APPEND _unwind_ptrace_srcs
${libunwind_SOURCE_DIR}/src/x86_64/Ginit_remote.c
)
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "ppc64")
set(_unwind_cpu "ppc64")
list(APPEND _unwind_platform_srcs
${libunwind_SOURCE_DIR}/src/ppc/Gis_signal_frame.c
${libunwind_SOURCE_DIR}/src/ppc64/Gcreate_addr_space.c
${libunwind_SOURCE_DIR}/src/ppc64/Gglobal.c
${libunwind_SOURCE_DIR}/src/ppc64/Ginit.c
${libunwind_SOURCE_DIR}/src/ppc64/Gregs.c
${libunwind_SOURCE_DIR}/src/ppc64/Gresume.c
${libunwind_SOURCE_DIR}/src/ppc64/Gstep.c
${libunwind_SOURCE_DIR}/src/ppc64/get_func_addr.c
${libunwind_SOURCE_DIR}/src/ppc64/is_fpreg.c
)
list(APPEND _unwind_ptrace_srcs
${libunwind_SOURCE_DIR}/src/ppc/Ginit_remote.c
)
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")
set(_unwind_cpu "aarch64")
list(APPEND _unwind_platform_srcs
${libunwind_SOURCE_DIR}/src/aarch64/Gcreate_addr_space.c
${libunwind_SOURCE_DIR}/src/aarch64/Gglobal.c
${libunwind_SOURCE_DIR}/src/aarch64/Ginit.c
${libunwind_SOURCE_DIR}/src/aarch64/Gis_signal_frame.c
${libunwind_SOURCE_DIR}/src/aarch64/Gregs.c
${libunwind_SOURCE_DIR}/src/aarch64/Gresume.c
${libunwind_SOURCE_DIR}/src/aarch64/Gstash_frame.c
${libunwind_SOURCE_DIR}/src/aarch64/Gstep.c
${libunwind_SOURCE_DIR}/src/aarch64/is_fpreg.c
)
list(APPEND _unwind_ptrace_srcs
${libunwind_SOURCE_DIR}/src/aarch64/Ginit_remote.c
)
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "arm")
set(_unwind_cpu "arm")
list(APPEND _unwind_platform_srcs
${libunwind_SOURCE_DIR}/src/arm/Gcreate_addr_space.c
${libunwind_SOURCE_DIR}/src/arm/Gex_tables.c
${libunwind_SOURCE_DIR}/src/arm/Gglobal.c
${libunwind_SOURCE_DIR}/src/arm/Ginit.c
${libunwind_SOURCE_DIR}/src/arm/Gis_signal_frame.c
${libunwind_SOURCE_DIR}/src/arm/Gregs.c
${libunwind_SOURCE_DIR}/src/arm/Gresume.c
${libunwind_SOURCE_DIR}/src/arm/Gstash_frame.c
${libunwind_SOURCE_DIR}/src/arm/Gstep.c
${libunwind_SOURCE_DIR}/src/arm/is_fpreg.c
)
list(APPEND _unwind_ptrace_srcs
${libunwind_SOURCE_DIR}/src/arm/Ginit_remote.c
)
endif()
add_library(unwind_ptrace_wrapped STATIC
# internal_headers
${libunwind_SOURCE_DIR}/include/compiler.h
${libunwind_SOURCE_DIR}/include/config.h
${libunwind_SOURCE_DIR}/include/dwarf.h
${libunwind_SOURCE_DIR}/include/dwarf-eh.h
${libunwind_SOURCE_DIR}/include/dwarf_i.h
${libunwind_SOURCE_DIR}/include/libunwind.h
${libunwind_SOURCE_DIR}/include/libunwind-common.h
${libunwind_SOURCE_DIR}/include/libunwind-coredump.h
${libunwind_SOURCE_DIR}/include/libunwind-dynamic.h
${libunwind_SOURCE_DIR}/include/libunwind-ptrace.h
${libunwind_SOURCE_DIR}/include/libunwind-x86_64.h
${libunwind_SOURCE_DIR}/include/libunwind_i.h
${libunwind_SOURCE_DIR}/include/mempool.h
${libunwind_SOURCE_DIR}/include/remote.h
${libunwind_SOURCE_DIR}/include/tdep-x86_64/dwarf-config.h
${libunwind_SOURCE_DIR}/include/tdep-x86_64/libunwind_i.h
${libunwind_SOURCE_DIR}/include/tdep/dwarf-config.h
${libunwind_SOURCE_DIR}/include/tdep/libunwind_i.h
${libunwind_SOURCE_DIR}/include/unwind.h
${libunwind_SOURCE_DIR}/src/elf32.h
${libunwind_SOURCE_DIR}/src/elf64.h
${libunwind_SOURCE_DIR}/src/elfxx.h
${libunwind_SOURCE_DIR}/src/os-linux.h
${libunwind_SOURCE_DIR}/src/x86_64/init.h
${libunwind_SOURCE_DIR}/src/x86_64/offsets.h
${libunwind_SOURCE_DIR}/src/x86_64/ucontext_i.h
${libunwind_SOURCE_DIR}/src/x86_64/unwind_i.h
# included_sources
${libunwind_SOURCE_DIR}/src/elf64.h
${libunwind_SOURCE_DIR}/src/elfxx.h
${libunwind_SOURCE_DIR}/src/elfxx.c
# sources_common
${libunwind_SOURCE_DIR}/src/dwarf/Gexpr.c
${libunwind_SOURCE_DIR}/src/dwarf/Gfde.c
${libunwind_SOURCE_DIR}/src/dwarf/Gfind_proc_info-lsb.c
${libunwind_SOURCE_DIR}/src/dwarf/Gfind_unwind_table.c
${libunwind_SOURCE_DIR}/src/dwarf/Gparser.c
${libunwind_SOURCE_DIR}/src/dwarf/Gpe.c
${libunwind_SOURCE_DIR}/src/dwarf/global.c
${libunwind_SOURCE_DIR}/src/mi/Gdestroy_addr_space.c
${libunwind_SOURCE_DIR}/src/mi/Gdyn-extract.c
${libunwind_SOURCE_DIR}/src/mi/Gfind_dynamic_proc_info.c
${libunwind_SOURCE_DIR}/src/mi/Gget_accessors.c
${libunwind_SOURCE_DIR}/src/mi/Gget_proc_name.c
${libunwind_SOURCE_DIR}/src/mi/Gget_reg.c
${libunwind_SOURCE_DIR}/src/mi/Gput_dynamic_unwind_info.c
${libunwind_SOURCE_DIR}/src/mi/flush_cache.c
${libunwind_SOURCE_DIR}/src/mi/init.c
${libunwind_SOURCE_DIR}/src/mi/mempool.c
${libunwind_SOURCE_DIR}/src/os-linux.c
${_unwind_platform_srcs}
# srcs
${libunwind_SOURCE_DIR}/src/mi/Gdyn-remote.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_access_fpreg.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_access_mem.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_access_reg.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_accessors.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_create.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_destroy.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_elf.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_find_proc_info.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_get_dyn_info_list_addr.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_get_proc_name.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_internal.h
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_put_unwind_info.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_reg_offset.c
${libunwind_SOURCE_DIR}/src/ptrace/_UPT_resume.c
# hdrs
${libunwind_SOURCE_DIR}/include/config.h
${libunwind_SOURCE_DIR}/include/libunwind.h
# source_ptrace
${_unwind_ptrace_srcs}
)
add_library(unwind::unwind_ptrace_wrapped ALIAS unwind_ptrace_wrapped)
target_include_directories(unwind_ptrace_wrapped PUBLIC
${libunwind_SOURCE_DIR}/include
${libunwind_SOURCE_DIR}/include/tdep
${libunwind_SOURCE_DIR}/include/tdep-${_unwind_cpu}
${libunwind_SOURCE_DIR}/src
)
target_compile_options(unwind_ptrace_wrapped PRIVATE
-fno-common
-Wno-cpp
)
target_compile_definitions(unwind_ptrace_wrapped
PRIVATE -DHAVE_CONFIG_H
-D_GNU_SOURCE
-DNO_FRAME_POINTER
PUBLIC -D_UPT_accessors=_UPT_accessors_wrapped
-D_UPT_create=_UPT_create_wrapped
-D_UPT_destroy=_UPT_destroy_wrapped
-D_U${_unwind_cpu}_create_addr_space=_U${_unwind_cpu}_create_addr_space_wrapped
-D_U${_unwind_cpu}_destroy_addr_space=_U${_unwind_cpu}_destroy_addr_space_wrapped
-D_U${_unwind_cpu}_get_proc_name=_U${_unwind_cpu}_get_proc_name_wrapped
-D_U${_unwind_cpu}_get_reg=_U${_unwind_cpu}_get_reg_wrapped
-D_U${_unwind_cpu}_init_remote=_U${_unwind_cpu}_init_remote_wrapped
-D_U${_unwind_cpu}_step=_U${_unwind_cpu}_step_wrapped
-Dptrace=ptrace_wrapped
)
target_link_libraries(unwind_ptrace_wrapped PRIVATE
sapi::base
sandbox2::ptrace_hook
)
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