vcpkg/scripts/cmake/vcpkg_execute_required_process.cmake
nicole mazzuca 6b117c9c7e
[vcpkg docs] Check for documentation generation in CI (#14614)
* [vcpkg docs] Change how documenting port functions works

Instead of using `##`, use comment blocks for documentation.

Also, add some minor docs and change RST -> MD
so we actually get docs generated.

* add CI stuff

* regenerate docs

* fix vcpkg_find_acquire_program to not use _execute_process
2020-12-01 13:37:26 -08:00

123 lines
4.4 KiB
CMake

#[===[.md:
# vcpkg_execute_required_process
Execute a process with logging and fail the build if the command fails.
## Usage
```cmake
vcpkg_execute_required_process(
COMMAND <${PERL}> [<arguments>...]
WORKING_DIRECTORY <${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg>
LOGNAME <build-${TARGET_TRIPLET}-dbg>
[TIMEOUT <seconds>]
[OUTPUT_VARIABLE <var>]
[ERROR_VARIABLE <var>]
)
```
## Parameters
### ALLOW_IN_DOWNLOAD_MODE
Allows the command to execute in Download Mode.
[See execute_process() override](../../scripts/cmake/execute_process.cmake).
### COMMAND
The command to be executed, along with its arguments.
### WORKING_DIRECTORY
The directory to execute the command in.
### LOGNAME
The prefix to use for the log files.
### TIMEOUT
Optional timeout after which to terminate the command.
### OUTPUT_VARIABLE
Optional variable to receive stdout of the command.
### ERROR_VARIABLE
Optional variable to receive stderr of the command.
This should be a unique name for different triplets so that the logs don't conflict when building multiple at once.
## Examples
* [ffmpeg](https://github.com/Microsoft/vcpkg/blob/master/ports/ffmpeg/portfile.cmake)
* [openssl](https://github.com/Microsoft/vcpkg/blob/master/ports/openssl/portfile.cmake)
* [boost](https://github.com/Microsoft/vcpkg/blob/master/ports/boost/portfile.cmake)
* [qt5](https://github.com/Microsoft/vcpkg/blob/master/ports/qt5/portfile.cmake)
#]===]
include(vcpkg_prettify_command)
include(vcpkg_execute_in_download_mode)
function(vcpkg_execute_required_process)
# parse parameters such that semicolons in options arguments to COMMAND don't get erased
cmake_parse_arguments(PARSE_ARGV 0 vcpkg_execute_required_process "ALLOW_IN_DOWNLOAD_MODE" "WORKING_DIRECTORY;LOGNAME;TIMEOUT;OUTPUT_VARIABLE;ERROR_VARIABLE" "COMMAND")
set(LOG_OUT "${CURRENT_BUILDTREES_DIR}/${vcpkg_execute_required_process_LOGNAME}-out.log")
set(LOG_ERR "${CURRENT_BUILDTREES_DIR}/${vcpkg_execute_required_process_LOGNAME}-err.log")
if(vcpkg_execute_required_process_TIMEOUT)
set(TIMEOUT_PARAM "TIMEOUT;${vcpkg_execute_required_process_TIMEOUT}")
else()
set(TIMEOUT_PARAM "")
endif()
if(vcpkg_execute_required_process_OUTPUT_VARIABLE)
set(OUTPUT_VARIABLE_PARAM "OUTPUT_VARIABLE;${vcpkg_execute_required_process_OUTPUT_VARIABLE}")
else()
set(OUTPUT_VARIABLE_PARAM "")
endif()
if(vcpkg_execute_required_process_ERROR_VARIABLE)
set(ERROR_VARIABLE_PARAM "ERROR_VARIABLE;${vcpkg_execute_required_process_ERROR_VARIABLE}")
else()
set(ERROR_VARIABLE_PARAM "")
endif()
if (DEFINED VCPKG_DOWNLOAD_MODE AND NOT vcpkg_execute_required_process_ALLOW_IN_DOWNLOAD_MODE)
message(FATAL_ERROR
[[
This command cannot be executed in Download Mode.
Halting portfile execution.
]])
endif()
vcpkg_execute_in_download_mode(
COMMAND ${vcpkg_execute_required_process_COMMAND}
OUTPUT_FILE ${LOG_OUT}
ERROR_FILE ${LOG_ERR}
RESULT_VARIABLE error_code
WORKING_DIRECTORY ${vcpkg_execute_required_process_WORKING_DIRECTORY}
${TIMEOUT_PARAM}
${OUTPUT_VARIABLE_PARAM}
${ERROR_VARIABLE_PARAM})
if(error_code)
set(LOGS)
file(READ "${LOG_OUT}" out_contents)
file(READ "${LOG_ERR}" err_contents)
if(out_contents)
list(APPEND LOGS "${LOG_OUT}")
endif()
if(err_contents)
list(APPEND LOGS "${LOG_ERR}")
endif()
set(STRINGIFIED_LOGS)
foreach(LOG ${LOGS})
file(TO_NATIVE_PATH "${LOG}" NATIVE_LOG)
list(APPEND STRINGIFIED_LOGS " ${NATIVE_LOG}\n")
endforeach()
vcpkg_prettify_command(vcpkg_execute_required_process_COMMAND vcpkg_execute_required_process_COMMAND_PRETTY)
message(FATAL_ERROR
" Command failed: ${vcpkg_execute_required_process_COMMAND_PRETTY}\n"
" Working Directory: ${vcpkg_execute_required_process_WORKING_DIRECTORY}\n"
" Error code: ${error_code}\n"
" See logs for more information:\n"
${STRINGIFIED_LOGS}
)
endif()
# pass output parameters back to caller's scope
foreach(arg OUTPUT_VARIABLE ERROR_VARIABLE)
if(vcpkg_execute_required_process_${arg})
set(${vcpkg_execute_required_process_${arg}} ${${vcpkg_execute_required_process_${arg}}} PARENT_SCOPE)
endif()
endforeach()
endfunction()