1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
#[=======================================================================[.rst:
Imported from Corrosion https://github.com/corrosion-rs/corrosion/
Copyright (c) 2018 Andrew Gaspar
Licensed under the MIT license
However this is absolutely gutted and reduced to the bare minimum.
#]=======================================================================]
include(FindPackageHandleStandardArgs)
cmake_minimum_required(VERSION 3.12)
# List of user variables that will override any toolchain-provided setting
set(_Rust_USER_VARS Rust_COMPILER Rust_CARGO Rust_CARGO_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 (NOT DEFINED Rust_CARGO_CACHED)
find_program(Rust_CARGO_CACHED cargo PATHS "$ENV{HOME}/.cargo/bin")
endif()
if (NOT EXISTS "${Rust_CARGO_CACHED}")
message(FATAL_ERROR "The cargo executable ${Rust_CARGO_CACHED} was not found. "
"Consider setting `Rust_CARGO_CACHED` to the absolute path of `cargo`."
)
endif()
if (NOT DEFINED Rust_COMPILER_CACHED)
find_program(Rust_COMPILER_CACHED rustc PATHS "$ENV{HOME}/.cargo/bin")
endif()
if (NOT EXISTS "${Rust_COMPILER_CACHED}")
message(FATAL_ERROR "The rustc executable ${Rust_COMPILER} was not found. "
"Consider setting `Rust_COMPILER` to the absolute path of `rustc`."
)
endif()
# Figure out the target by just using the host target.
# If you want to cross-compile, you'll have to set Rust_CARGO_TARGET
if(NOT Rust_CARGO_TARGET_CACHED)
execute_process(
COMMAND "${Rust_COMPILER_CACHED}" --version --verbose
OUTPUT_VARIABLE _RUSTC_VERSION_RAW
RESULT_VARIABLE _RUSTC_VERSION_RESULT
)
if(NOT ( "${_RUSTC_VERSION_RESULT}" EQUAL "0" ))
message(FATAL_ERROR "Failed to get rustc version.\n"
"${Rust_COMPILER} --version failed with error: `${_RUSTC_VERSION_RESULT}`")
endif()
if (_RUSTC_VERSION_RAW MATCHES "host: ([a-zA-Z0-9_\\-]*)\n")
set(Rust_DEFAULT_HOST_TARGET "${CMAKE_MATCH_1}")
else()
message(FATAL_ERROR
"Failed to parse rustc host target. `rustc --version --verbose` evaluated to:\n${_RUSTC_VERSION_RAW}"
)
endif()
if(CMAKE_CROSSCOMPILING)
message(FATAL_ERROR "CMake is in cross-compiling mode."
"Manually set `Rust_CARGO_TARGET`."
)
endif()
set(Rust_CARGO_TARGET_CACHED "${Rust_DEFAULT_HOST_TARGET}" CACHE STRING "Target triple")
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_CARGO Rust_CARGO_TARGET
)
|
