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fish-shell/cmake/FindRust.cmake
Fabian Boehm 281df5daad cmake: Remove code to resolve rustup toolchains 
We turned it off, but for some reason (cmake version?) that stopped working on my system.

So instead we just remove all the code that does it.

To be honest I do not know why this exists anyway.
2024-11-27 22:29:13 +01:00

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#[=======================================================================[.rst:
FindRust
--------
Find Rust
This module finds an installed rustc compiler and the cargo build tool. If Rust
is managed by rustup it determines the available toolchains and returns a
concrete Rust version, not a rustup proxy.
Imported from Corrosion https://github.com/corrosion-rs/corrosion/
Copyright (c) 2018 Andrew Gaspar
Licensed under the MIT license
#]=======================================================================]
cmake_minimum_required(VERSION 3.12)
# search for Cargo here and set up a bunch of cool flags and stuff
include(FindPackageHandleStandardArgs)
list(APPEND CMAKE_MESSAGE_CONTEXT "FindRust")
# Print error message and return.
macro(_findrust_failed)
if("${Rust_FIND_REQUIRED}")
message(FATAL_ERROR ${ARGN})
elseif(NOT "${Rust_FIND_QUIETLY}")
message(WARNING ${ARGN})
endif()
# Note: PARENT_SCOPE is the scope of the caller of the caller of this macro.
set(Rust_FOUND "" PARENT_SCOPE)
return()
endmacro()
# Checks if the actual version of a Rust toolchain matches the VERSION requirements specified in find_package.
function(_findrust_version_ok ACTUAL_VERSION OUT_IS_OK)
if(DEFINED Rust_FIND_VERSION_RANGE)
if(Rust_FIND_VERSION_RANGE_MAX STREQUAL "INCLUDE")
set(COMPARSION_OPERATOR "VERSION_LESS_EQUAL")
elseif(Rust_FIND_VERSION_RANGE_MAX STREQUAL "EXCLUDE")
set(COMPARSION_OPERATOR "VERSION_LESS")
else()
message(FATAL_ERROR "Unexpected value in `<PackageName>_FIND_VERSION_RANGE_MAX`: "
"`${Rust_FIND_VERSION_RANGE_MAX}`.")
endif()
if(("${ACTUAL_VERSION}" VERSION_GREATER_EQUAL "${Rust_FIND_VERSION_RANGE_MIN}")
AND
( "${ACTUAL_VERSION}" ${COMPARSION_OPERATOR} "${Rust_FIND_VERSION_RANGE_MAX}" )
)
set("${OUT_IS_OK}" TRUE PARENT_SCOPE)
else()
set("${OUT_IS_OK}" FALSE PARENT_SCOPE)
endif()
elseif(DEFINED Rust_FIND_VERSION)
if(Rust_VERSION_EXACT)
set(COMPARISON_OPERATOR VERSION_EQUAL)
else()
set(COMPARISON_OPERATOR VERSION_GREATER_EQUAL)
endif()
if(_TOOLCHAIN_${_TOOLCHAIN_SELECTED}_VERSION "${COMPARISON_OPERATOR}" Rust_FIND_VERSION)
set("${OUT_IS_OK}" TRUE PARENT_SCOPE)
else()
set("${OUT_IS_OK}" FALSE PARENT_SCOPE)
endif()
else()
# if no VERSION requirement was specified, the version is always okay.
set("${OUT_IS_OK}" TRUE PARENT_SCOPE)
endif()
endfunction()
function(_corrosion_strip_target_triple input_triple_or_path output_triple)
# If the target_triple is a path to a custom target specification file, then strip everything
# except the filename from `target_triple`.
get_filename_component(target_triple_ext "${input_triple_or_path}" EXT)
set(target_triple "${input_triple_or_path}")
if(target_triple_ext)
if(target_triple_ext STREQUAL ".json")
get_filename_component(target_triple "${input_triple_or_path}" NAME_WE)
endif()
endif()
set(${output_triple} "${target_triple}" PARENT_SCOPE)
endfunction()
function(_corrosion_parse_target_triple target_triple out_arch out_vendor out_os out_env)
_corrosion_strip_target_triple(${target_triple} target_triple)
# The vendor part may be left out from the target triple, and since `env` is also optional,
# we determine if vendor is present by matching against a list of known vendors.
set(known_vendors
"apple"
"esp[a-z0-9]*" # espressif, e.g. riscv32imc-esp-espidf or xtensa-esp32s3-none-elf
"fortanix"
"kmc"
"pc"
"nintendo"
"nvidia"
"openwrt"
"alpine"
"chimera"
"unikraft"
"unknown"
"uwp" # aarch64-uwp-windows-msvc
"wrs" # e.g. aarch64-wrs-vxworks
"sony"
"sun"
)
# todo: allow users to add additional vendors to the list via a cmake variable.
list(JOIN known_vendors "|" known_vendors_joined)
# vendor is optional - We detect if vendor is present by matching against a known list of
# vendors. The next field is the OS, which we assume to always be present, while the last field
# is again optional and contains the environment.
string(REGEX MATCH
"^([a-z0-9_\.]+)-((${known_vendors_joined})-)?([a-z0-9_]+)(-([a-z0-9_]+))?$"
whole_match
"${target_triple}"
)
if((NOT whole_match) AND (NOT CORROSION_NO_WARN_PARSE_TARGET_TRIPLE_FAILED))
message(WARNING "Failed to parse target-triple `${target_triple}`."
"Corrosion determines some information about the output artifacts based on OS "
"specified in the Rust target-triple.\n"
"Currently this is relevant for windows and darwin (mac) targets, since file "
"extensions differ.\n"
"Note: If you are targeting a different OS you can suppress this warning by"
" setting the CMake cache variable "
"`CORROSION_NO_WARN_PARSE_TARGET_TRIPLE_FAILED`."
"Please consider opening an issue on github if you you need to add a new vendor to the list."
)
endif()
message(DEBUG "Parsed Target triple: arch: ${CMAKE_MATCH_1}, vendor: ${CMAKE_MATCH_3}, "
"OS: ${CMAKE_MATCH_4}, env: ${CMAKE_MATCH_6}")
set("${out_arch}" "${CMAKE_MATCH_1}" PARENT_SCOPE)
set("${out_vendor}" "${CMAKE_MATCH_3}" PARENT_SCOPE)
set("${out_os}" "${CMAKE_MATCH_4}" PARENT_SCOPE)
set("${out_env}" "${CMAKE_MATCH_6}" PARENT_SCOPE)
endfunction()
function(_corrosion_determine_libs_new target_triple out_libs)
set(package_dir "${CMAKE_BINARY_DIR}/corrosion/required_libs")
# Cleanup on reconfigure to get a cleans state (in case we change something in the future)
file(REMOVE_RECURSE "${package_dir}")
file(MAKE_DIRECTORY "${package_dir}")
set(manifest "[package]\nname = \"required_libs\"\nedition = \"2018\"\nversion = \"0.1.0\"\n")
string(APPEND manifest "\n[lib]\ncrate-type=[\"staticlib\"]\npath = \"lib.rs\"\n")
string(APPEND manifest "\n[workspace]\n")
file(WRITE "${package_dir}/Cargo.toml" "${manifest}")
file(WRITE "${package_dir}/lib.rs" "pub fn add(left: usize, right: usize) -> usize {left + right}\n")
execute_process(
COMMAND ${CMAKE_COMMAND} -E env
"CARGO_BUILD_RUSTC=${Rust_COMPILER_CACHED}"
${Rust_CARGO_CACHED} rustc --verbose --color never --target=${target_triple} -- --print=native-static-libs
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/corrosion/required_libs"
RESULT_VARIABLE cargo_build_result
ERROR_VARIABLE cargo_build_error_message
)
if(cargo_build_result)
message(DEBUG "Determining required native libraries - failed: ${cargo_build_result}.")
message(TRACE "The cargo build error was: ${cargo_build_error_message}")
message(DEBUG "Note: This is expected for Rust targets without std support")
return()
else()
# The pattern starts with `native-static-libs:` and goes to the end of the line.
if(cargo_build_error_message MATCHES "native-static-libs: ([^\r\n]+)\r?\n")
string(REPLACE " " ";" "libs_list" "${CMAKE_MATCH_1}")
set(stripped_lib_list "")
set(was_last_framework OFF)
foreach(lib ${libs_list})
# merge -framework;lib -> "-framework lib" as CMake does de-duplication of link libraries, and -framework prefix is required
if (lib STREQUAL "-framework")
set(was_last_framework ON)
continue()
endif()
if (was_last_framework)
list(APPEND stripped_lib_list "-framework ${lib}")
set(was_last_framework OFF)
continue()
endif()
# Strip leading `-l` (unix) and potential .lib suffix (windows)
string(REGEX REPLACE "^-l" "" "stripped_lib" "${lib}")
string(REGEX REPLACE "\.lib$" "" "stripped_lib" "${stripped_lib}")
list(APPEND stripped_lib_list "${stripped_lib}")
endforeach()
set(libs_list "${stripped_lib_list}")
# Special case `msvcrt` to link with the debug version in Debug mode.
list(TRANSFORM libs_list REPLACE "^msvcrt$" "\$<\$<CONFIG:Debug>:msvcrtd>")
else()
message(DEBUG "Determining required native libraries - failed: Regex match failure.")
message(DEBUG "`native-static-libs` not found in: `${cargo_build_error_message}`")
return()
endif()
endif()
set("${out_libs}" "${libs_list}" PARENT_SCOPE)
endfunction()
if (NOT "${Rust_TOOLCHAIN}" STREQUAL "$CACHE{Rust_TOOLCHAIN}")
# Promote Rust_TOOLCHAIN to a cache variable if it is not already a cache variable
set(Rust_TOOLCHAIN ${Rust_TOOLCHAIN} CACHE STRING "Requested rustup toolchain" FORCE)
endif()
# This block checks to see if we're prioritizing a rustup-managed toolchain.
if (DEFINED Rust_TOOLCHAIN)
# If the user specifies `Rust_TOOLCHAIN`, then look for `rustup` first, rather than `rustc`.
find_program(Rust_RUSTUP rustup PATHS "$ENV{HOME}/.cargo/bin")
if(NOT Rust_RUSTUP)
if(NOT "${Rust_FIND_QUIETLY}")
message(
WARNING "CMake variable `Rust_TOOLCHAIN` specified, but `rustup` was not found. "
"Ignoring toolchain and looking for a Rust toolchain not managed by rustup.")
endif()
endif()
else()
# If we aren't definitely using a rustup toolchain, look for rustc first - the user may have
# a toolchain installed via a method other than rustup higher in the PATH, which should be
# preferred. However, if the first-found rustc is a rustup proxy, then we'll revert to
# finding the preferred toolchain via rustup.
# Uses `Rust_COMPILER` to let user-specified `rustc` win. But we will still "override" the
# user's setting if it is pointing to `rustup`. Default rustup install path is provided as a
# backup if a toolchain cannot be found in the user's PATH.
if (DEFINED Rust_COMPILER)
set(_Rust_COMPILER_TEST "${Rust_COMPILER}")
set(_USER_SPECIFIED_RUSTC ON)
if(NOT (EXISTS "${_Rust_COMPILER_TEST}" AND NOT IS_DIRECTORY "${_Rust_COMPILER_TEST}"))
set(_ERROR_MESSAGE "Rust_COMPILER was set to `${Rust_COMPILER}`, but this file does "
"not exist."
)
_findrust_failed(${_ERROR_MESSAGE})
return()
endif()
else()
find_program(_Rust_COMPILER_TEST rustc PATHS "$ENV{HOME}/.cargo/bin")
if(NOT EXISTS "${_Rust_COMPILER_TEST}")
set(_ERROR_MESSAGE "`rustc` not found in PATH or `$ENV{HOME}/.cargo/bin`.\n"
"Hint: Check if `rustc` is in PATH or manually specify the location "
"by setting `Rust_COMPILER` to the path to `rustc`.")
_findrust_failed(${_ERROR_MESSAGE})
endif()
endif()
# Check if the discovered rustc is actually a "rustup" proxy.
execute_process(
COMMAND
${CMAKE_COMMAND} -E env
RUSTUP_FORCE_ARG0=rustup
"${_Rust_COMPILER_TEST}" --version
OUTPUT_VARIABLE _RUSTC_VERSION_RAW
ERROR_VARIABLE _RUSTC_VERSION_STDERR
RESULT_VARIABLE _RUSTC_VERSION_RESULT
)
if(NOT (_RUSTC_VERSION_RESULT EQUAL "0"))
_findrust_failed("`${_Rust_COMPILER_TEST} --version` failed with ${_RUSTC_VERSION_RESULT}\n"
"rustc stderr:\n${_RUSTC_VERSION_STDERR}"
)
endif()
unset(_Rust_COMPILER_TEST CACHE)
endif()
# List of user variables that will override any toolchain-provided setting
set(_Rust_USER_VARS Rust_COMPILER Rust_CARGO Rust_CARGO_TARGET Rust_CARGO_HOST_TARGET)
foreach(_VAR ${_Rust_USER_VARS})
if (DEFINED "${_VAR}")
set(${_VAR}_CACHED "${${_VAR}}" CACHE INTERNAL "Internal cache of ${_VAR}")
else()
unset(${_VAR}_CACHED CACHE)
endif()
endforeach()
if (Rust_RUSTUP)
get_filename_component(_RUST_TOOLCHAIN_PATH "${Rust_RUSTUP}" DIRECTORY)
get_filename_component(_RUST_TOOLCHAIN_PATH "${_RUST_TOOLCHAIN_PATH}" DIRECTORY)
find_program(
Rust_COMPILER_CACHED
rustc
HINTS "${_RUST_TOOLCHAIN_PATH}/bin"
NO_DEFAULT_PATH)
else()
find_program(Rust_COMPILER_CACHED rustc)
if (EXISTS "${Rust_COMPILER_CACHED}")
# rustc is expected to be at `<toolchain_path>/bin/rustc`.
get_filename_component(_RUST_TOOLCHAIN_PATH "${Rust_COMPILER_CACHED}" DIRECTORY)
get_filename_component(_RUST_TOOLCHAIN_PATH "${_RUST_TOOLCHAIN_PATH}" DIRECTORY)
endif()
endif()
if (NOT EXISTS "${Rust_COMPILER_CACHED}")
set(_NOT_FOUND_MESSAGE "The rustc executable was not found. "
"Rust not installed or ~/.cargo/bin not added to path?\n"
"Hint: Consider setting `Rust_COMPILER` to the absolute path of `rustc`."
)
_findrust_failed(${_NOT_FOUND_MESSAGE})
endif()
set(_NOT_FOUND_MESSAGE "Failed to find `cargo` in PATH and `${_RUST_TOOLCHAIN_PATH}/bin`.\n"
"Please ensure cargo is in PATH or manually specify the path to a compatible `cargo` by "
"setting `Rust_CARGO`."
)
# On some systems (e.g. NixOS) cargo is not managed by rustup and also not next to rustc.
find_program(
Rust_CARGO_CACHED
cargo
HINTS "${_RUST_TOOLCHAIN_PATH}/bin"
)
# note: maybe can use find_package_handle_standard_args here, if we remove the _CACHED postfix.
# not sure why that is here...
if(NOT EXISTS "${Rust_CARGO_CACHED}")
_findrust_failed(${_NOT_FOUND_MESSAGE})
endif()
execute_process(
COMMAND "${Rust_CARGO_CACHED}" --version --verbose
OUTPUT_VARIABLE _CARGO_VERSION_RAW
RESULT_VARIABLE _CARGO_VERSION_RESULT
)
# todo: check if cargo is a required component!
if(NOT ( "${_CARGO_VERSION_RESULT}" EQUAL "0" ))
_findrust_failed("Failed to get cargo version.\n"
"`${Rust_CARGO_CACHED} --version` failed with error: `${_CARGO_VERSION_RESULT}"
)
endif()
# todo: don't set cache variables here, but let find_package_handle_standard_args do the promotion
# later.
if (_CARGO_VERSION_RAW MATCHES "cargo ([0-9]+)\\.([0-9]+)\\.([0-9]+)")
set(Rust_CARGO_VERSION_MAJOR "${CMAKE_MATCH_1}" CACHE INTERNAL "" FORCE)
set(Rust_CARGO_VERSION_MINOR "${CMAKE_MATCH_2}" CACHE INTERNAL "" FORCE)
set(Rust_CARGO_VERSION_PATCH "${CMAKE_MATCH_3}" CACHE INTERNAL "" FORCE)
set(Rust_CARGO_VERSION "${Rust_CARGO_VERSION_MAJOR}.${Rust_CARGO_VERSION_MINOR}.${Rust_CARGO_VERSION_PATCH}" CACHE INTERNAL "" FORCE)
# Workaround for the version strings where the `cargo ` prefix is missing.
elseif(_CARGO_VERSION_RAW MATCHES "([0-9]+)\\.([0-9]+)\\.([0-9]+)")
set(Rust_CARGO_VERSION_MAJOR "${CMAKE_MATCH_1}" CACHE INTERNAL "" FORCE)
set(Rust_CARGO_VERSION_MINOR "${CMAKE_MATCH_2}" CACHE INTERNAL "" FORCE)
set(Rust_CARGO_VERSION_PATCH "${CMAKE_MATCH_3}" CACHE INTERNAL "" FORCE)
set(Rust_CARGO_VERSION "${Rust_CARGO_VERSION_MAJOR}.${Rust_CARGO_VERSION_MINOR}.${Rust_CARGO_VERSION_PATCH}" CACHE INTERNAL "" FORCE)
else()
_findrust_failed(
"Failed to parse cargo version. `cargo --version` evaluated to (${_CARGO_VERSION_RAW}). "
"Expected a <Major>.<Minor>.<Patch> version triple."
)
endif()
execute_process(
COMMAND "${Rust_COMPILER_CACHED}" --version --verbose
OUTPUT_VARIABLE _RUSTC_VERSION_RAW
RESULT_VARIABLE _RUSTC_VERSION_RESULT
)
if(NOT ( "${_RUSTC_VERSION_RESULT}" EQUAL "0" ))
_findrust_failed("Failed to get rustc version.\n"
"${Rust_COMPILER_CACHED} --version failed with error: `${_RUSTC_VERSION_RESULT}`")
endif()
if (_RUSTC_VERSION_RAW MATCHES "rustc ([0-9]+)\\.([0-9]+)\\.([0-9]+)(-nightly)?")
set(Rust_VERSION_MAJOR "${CMAKE_MATCH_1}" CACHE INTERNAL "" FORCE)
set(Rust_VERSION_MINOR "${CMAKE_MATCH_2}" CACHE INTERNAL "" FORCE)
set(Rust_VERSION_PATCH "${CMAKE_MATCH_3}" CACHE INTERNAL "" FORCE)
set(Rust_VERSION "${Rust_VERSION_MAJOR}.${Rust_VERSION_MINOR}.${Rust_VERSION_PATCH}" CACHE INTERNAL "" FORCE)
if(CMAKE_MATCH_4)
set(Rust_IS_NIGHTLY 1 CACHE INTERNAL "" FORCE)
else()
set(Rust_IS_NIGHTLY 0 CACHE INTERNAL "" FORCE)
endif()
else()
_findrust_failed("Failed to parse rustc version. `${Rust_COMPILER_CACHED} --version --verbose` "
"evaluated to:\n`${_RUSTC_VERSION_RAW}`"
)
endif()
if (_RUSTC_VERSION_RAW MATCHES "host: ([a-zA-Z0-9_\\-]*)\n")
set(Rust_DEFAULT_HOST_TARGET "${CMAKE_MATCH_1}")
set(Rust_CARGO_HOST_TARGET_CACHED "${Rust_DEFAULT_HOST_TARGET}" CACHE STRING "Host triple")
else()
_findrust_failed(
"Failed to parse rustc host target. `rustc --version --verbose` evaluated to:\n${_RUSTC_VERSION_RAW}"
)
endif()
if (_RUSTC_VERSION_RAW MATCHES "LLVM version: ([0-9]+)\\.([0-9]+)(\\.([0-9]+))?")
set(Rust_LLVM_VERSION_MAJOR "${CMAKE_MATCH_1}" CACHE INTERNAL "" FORCE)
set(Rust_LLVM_VERSION_MINOR "${CMAKE_MATCH_2}" CACHE INTERNAL "" FORCE)
# With the Rust toolchain 1.44.1 the reported LLVM version is 9.0, i.e. without a patch version.
# Since cmake regex does not support non-capturing groups, just ignore Match 3.
set(Rust_LLVM_VERSION_PATCH "${CMAKE_MATCH_4}" CACHE INTERNAL "" FORCE)
set(Rust_LLVM_VERSION "${Rust_LLVM_VERSION_MAJOR}.${Rust_LLVM_VERSION_MINOR}.${Rust_LLVM_VERSION_PATCH}" CACHE INTERNAL "" FORCE)
elseif(NOT Rust_FIND_QUIETLY)
message(
WARNING
"Failed to parse rustc LLVM version. `rustc --version --verbose` evaluated to:\n${_RUSTC_VERSION_RAW}"
)
endif()
if (NOT Rust_CARGO_TARGET_CACHED)
unset(_CARGO_ARCH)
unset(_CARGO_ABI)
if (WIN32)
if (CMAKE_VS_PLATFORM_NAME)
string(TOLOWER "${CMAKE_VS_PLATFORM_NAME}" LOWER_VS_PLATFORM_NAME)
if ("${LOWER_VS_PLATFORM_NAME}" STREQUAL "win32")
set(_CARGO_ARCH i686)
elseif("${LOWER_VS_PLATFORM_NAME}" STREQUAL "x64")
set(_CARGO_ARCH x86_64)
elseif("${LOWER_VS_PLATFORM_NAME}" STREQUAL "arm64")
set(_CARGO_ARCH aarch64)
else()
message(WARNING "VS Platform '${CMAKE_VS_PLATFORM_NAME}' not recognized")
endif()
endif()
# Fallback path
if(NOT DEFINED _CARGO_ARCH)
# Possible values for windows when not cross-compiling taken from here:
# https://learn.microsoft.com/en-us/windows/win32/winprog64/wow64-implementation-details
# When cross-compiling the user is expected to supply the value, so we match more variants.
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(AMD64|amd64|x86_64)$")
set(_CARGO_ARCH x86_64)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(ARM64|arm64|aarch64)$")
set(_CARGO_ARCH aarch64)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(X86|x86|i686)$")
set(_CARGO_ARCH i686)
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "i586")
set(_CARGO_ARCH i586)
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "IA64")
message(FATAL_ERROR "No rust target for Intel Itanium.")
elseif(NOT "${CMAKE_SYSTEM_PROCESSOR}")
message(WARNING "Failed to detect target architecture. Please set `CMAKE_SYSTEM_PROCESSOR`"
" to your target architecture or set `Rust_CARGO_TARGET` to your cargo target triple."
)
else()
message(WARNING "Failed to detect target architecture. Please set "
"`Rust_CARGO_TARGET` to your cargo target triple."
)
endif()
endif()
set(_CARGO_VENDOR "pc-windows")
# The MSVC Generators will always target the msvc ABI.
# For other generators we check the compiler ID and compiler target (if present)
# If no compiler is set and we are not cross-compiling then we just choose the
# default rust host target.
if(DEFINED MSVC
OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC"
OR "${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC"
OR "${CMAKE_CXX_COMPILER_TARGET}" MATCHES "-msvc$"
OR "${CMAKE_C_COMPILER_TARGET}" MATCHES "-msvc$"
)
set(_CARGO_ABI msvc)
elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU"
OR "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU"
OR "${CMAKE_CXX_COMPILER_TARGET}" MATCHES "-gnu$"
OR "${CMAKE_C_COMPILER_TARGET}" MATCHES "-gnu$"
OR (NOT CMAKE_CROSSCOMPILING AND "${Rust_DEFAULT_HOST_TARGET}" MATCHES "-gnu$")
)
set(_CARGO_ABI gnu)
elseif(NOT "${CMAKE_CROSSCOMPILING}" AND "${Rust_DEFAULT_HOST_TARGET}" MATCHES "-msvc$")
# We first check if the gnu branch matches to ensure this fallback is only used
# if no compiler is enabled.
set(_CARGO_ABI msvc)
else()
message(WARNING "Could not determine the target ABI. Please specify `Rust_CARGO_TARGET` manually.")
endif()
if(DEFINED _CARGO_ARCH AND DEFINED _CARGO_VENDOR AND DEFINED _CARGO_ABI)
set(Rust_CARGO_TARGET_CACHED "${_CARGO_ARCH}-${_CARGO_VENDOR}-${_CARGO_ABI}"
CACHE STRING "Target triple")
endif()
elseif (ANDROID)
if (CMAKE_ANDROID_ARCH_ABI STREQUAL armeabi-v7a)
if (CMAKE_ANDROID_ARM_MODE)
set(_Rust_ANDROID_TARGET armv7-linux-androideabi)
else ()
set(_Rust_ANDROID_TARGET thumbv7neon-linux-androideabi)
endif()
elseif (CMAKE_ANDROID_ARCH_ABI STREQUAL arm64-v8a)
set(_Rust_ANDROID_TARGET aarch64-linux-android)
elseif (CMAKE_ANDROID_ARCH_ABI STREQUAL x86)
set(_Rust_ANDROID_TARGET i686-linux-android)
elseif (CMAKE_ANDROID_ARCH_ABI STREQUAL x86_64)
set(_Rust_ANDROID_TARGET x86_64-linux-android)
endif()
if (_Rust_ANDROID_TARGET)
set(Rust_CARGO_TARGET_CACHED "${_Rust_ANDROID_TARGET}" CACHE STRING "Target triple")
endif()
endif()
# Fallback to the default host target
if(NOT Rust_CARGO_TARGET_CACHED)
if(CMAKE_CROSSCOMPILING)
message(WARNING "CMake is in cross-compiling mode, but the cargo target-triple could not be inferred."
"Falling back to the default host target. Please consider manually setting `Rust_CARGO_TARGET`."
)
endif()
set(Rust_CARGO_TARGET_CACHED "${Rust_DEFAULT_HOST_TARGET}" CACHE STRING "Target triple")
endif()
message(STATUS "Rust Target: ${Rust_CARGO_TARGET_CACHED}")
endif()
if(Rust_CARGO_TARGET_CACHED STREQUAL Rust_DEFAULT_HOST_TARGET)
set(Rust_CROSSCOMPILING FALSE CACHE INTERNAL "Rust is configured for cross-compiling")
else()
set(Rust_CROSSCOMPILING TRUE CACHE INTERNAL "Rust is configured for cross-compiling")
endif()
_corrosion_parse_target_triple("${Rust_CARGO_TARGET_CACHED}" rust_arch rust_vendor rust_os rust_env)
_corrosion_parse_target_triple("${Rust_CARGO_HOST_TARGET_CACHED}" rust_host_arch rust_host_vendor rust_host_os rust_host_env)
set(Rust_CARGO_TARGET_ARCH "${rust_arch}" CACHE INTERNAL "Target architecture")
set(Rust_CARGO_TARGET_VENDOR "${rust_vendor}" CACHE INTERNAL "Target vendor")
set(Rust_CARGO_TARGET_OS "${rust_os}" CACHE INTERNAL "Target Operating System")
set(Rust_CARGO_TARGET_ENV "${rust_env}" CACHE INTERNAL "Target environment")
set(Rust_CARGO_HOST_ARCH "${rust_host_arch}" CACHE INTERNAL "Host architecture")
set(Rust_CARGO_HOST_VENDOR "${rust_host_vendor}" CACHE INTERNAL "Host vendor")
set(Rust_CARGO_HOST_OS "${rust_host_os}" CACHE INTERNAL "Host Operating System")
set(Rust_CARGO_HOST_ENV "${rust_host_env}" CACHE INTERNAL "Host environment")
if(NOT DEFINED CACHE{Rust_CARGO_TARGET_LINK_NATIVE_LIBS})
message(STATUS "Determining required link libraries for target ${Rust_CARGO_TARGET_CACHED}")
unset(required_native_libs)
_corrosion_determine_libs_new("${Rust_CARGO_TARGET_CACHED}" required_native_libs)
if(DEFINED required_native_libs)
message(STATUS "Required static libs for target ${Rust_CARGO_TARGET_CACHED}: ${required_native_libs}" )
endif()
# In very recent corrosion versions it is possible to override the rust compiler version
# per target, so to be totally correct we would need to determine the libraries for
# every installed Rust version, that the user could choose from.
# In practice there aren't likely going to be any major differences, so we just do it once
# for the target and once for the host target (if cross-compiling).
set(Rust_CARGO_TARGET_LINK_NATIVE_LIBS "${required_native_libs}" CACHE INTERNAL
"Required native libraries when linking Rust static libraries")
endif()
if(Rust_CROSSCOMPILING AND NOT DEFINED CACHE{Rust_CARGO_HOST_TARGET_LINK_NATIVE_LIBS})
message(STATUS "Determining required link libraries for target ${Rust_CARGO_HOST_TARGET_CACHED}")
unset(host_libs)
_corrosion_determine_libs_new("${Rust_CARGO_HOST_TARGET_CACHED}" host_libs)
if(DEFINED host_libs)
message(STATUS "Required static libs for host target ${Rust_CARGO_HOST_TARGET_CACHED}: ${host_libs}" )
endif()
set(Rust_CARGO_HOST_TARGET_LINK_NATIVE_LIBS "${host_libs}" CACHE INTERNAL
"Required native libraries when linking Rust static libraries for the host target")
endif()
# Set the input variables as non-cache variables so that the variables are available after
# `find_package`, even if the values were evaluated to defaults.
foreach(_VAR ${_Rust_USER_VARS})
set(${_VAR} "${${_VAR}_CACHED}")
# Ensure cached variables have type INTERNAL
set(${_VAR}_CACHED "${${_VAR}_CACHED}" CACHE INTERNAL "Internal cache of ${_VAR}")
endforeach()
find_package_handle_standard_args(
Rust
REQUIRED_VARS Rust_COMPILER Rust_VERSION Rust_CARGO Rust_CARGO_VERSION Rust_CARGO_TARGET Rust_CARGO_HOST_TARGET
VERSION_VAR Rust_VERSION
)
if(NOT TARGET Rust::Rustc)
add_executable(Rust::Rustc IMPORTED GLOBAL)
set_property(
TARGET Rust::Rustc
PROPERTY IMPORTED_LOCATION "${Rust_COMPILER_CACHED}"
)
add_executable(Rust::Cargo IMPORTED GLOBAL)
set_property(
TARGET Rust::Cargo
PROPERTY IMPORTED_LOCATION "${Rust_CARGO_CACHED}"
)
set(Rust_FOUND true)
endif()
list(POP_BACK CMAKE_MESSAGE_CONTEXT)
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