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Various improvements to ament_python_install_package #372

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Various improvements to ament_python_install_package #372

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d6c749a
Always use USE_SOURCE_PERMISSIONS
rhaschke Jan 6, 2022
a786aa2
Make SCRIPTS_DESTINATION argument optional
rhaschke Jan 6, 2022
321105d
Directly generate scripts into install location
rhaschke Jan 6, 2022
fe6b3a3
Silence policy CMP0087 warning
rhaschke Jan 6, 2022
d29798e
Support multiple SCRIPTS_DESTINATIONs
rhaschke Jan 6, 2022
cc7ad4e
Revert "Silence policy CMP0087 warning"
rhaschke Feb 8, 2022
30db879
Use python_interpreter_config to silence CMP0087 warning
rhaschke Sep 10, 2022
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35 changes: 12 additions & 23 deletions ament_cmake_python/cmake/ament_python_install_package.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@
# directory (default: PYTHON_INSTALL_DIR)
# :type DESTINATION: string
# :param SCRIPTS_DESTINATION: the path to the Python package scripts'
# installation directory, scripts (if any) will be ignored if not set
# installation directory (default: lib/${PROJECT_NAME})
# :type SCRIPTS_DESTINATION: string
# :param SKIP_COMPILE: if set do not byte-compile the installed package
# :type SKIP_COMPILE: option
Expand All @@ -41,7 +41,7 @@ endmacro()

function(_ament_cmake_python_install_package package_name)
cmake_parse_arguments(
ARG "SKIP_COMPILE" "PACKAGE_DIR;VERSION;SETUP_CFG;DESTINATION;SCRIPTS_DESTINATION" "" ${ARGN})
ARG "SKIP_COMPILE" "PACKAGE_DIR;VERSION;SETUP_CFG;DESTINATION" "SCRIPTS_DESTINATION" ${ARGN})
if(ARG_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "ament_python_install_package() called with unused "
"arguments: ${ARG_UNPARSED_ARGUMENTS}")
Expand Down Expand Up @@ -83,6 +83,10 @@ function(_ament_cmake_python_install_package package_name)
set(ARG_DESTINATION ${PYTHON_INSTALL_DIR})
endif()

if(NOT ARG_SCRIPTS_DESTINATION)
set(ARG_SCRIPTS_DESTINATION "lib/${PROJECT_NAME}")
endif()

set(build_dir "${CMAKE_CURRENT_BINARY_DIR}/ament_cmake_python/${package_name}")

string(CONFIGURE "\
Expand Down Expand Up @@ -156,27 +160,12 @@ setup(
DESTINATION "${ARG_DESTINATION}/${egg_install_name}.egg-info"
)

if(ARG_SCRIPTS_DESTINATION)
file(MAKE_DIRECTORY "${build_dir}/scripts") # setup.py may or may not create it

add_custom_target(
ament_cmake_python_build_${package_name}_scripts ALL
COMMAND ${python_interpreter} setup.py install_scripts -d scripts
WORKING_DIRECTORY "${build_dir}"
DEPENDS ${egg_dependencies}
)

if(NOT AMENT_CMAKE_SYMLINK_INSTALL)
# Not needed for nor supported by symlink installs
set(_extra_install_args USE_SOURCE_PERMISSIONS)
endif()

install(
DIRECTORY "${build_dir}/scripts/"
DESTINATION "${ARG_SCRIPTS_DESTINATION}/"
${_extra_install_args}
)
endif()
# generate/install entry-point console scripts
foreach(_dest ${ARG_SCRIPTS_DESTINATION})
get_filename_component(ABS_SCRIPTS_DESTINATION "${_dest}" ABSOLUTE BASE_DIR "${CMAKE_INSTALL_PREFIX}")
install(CODE "execute_process(COMMAND ${python_interpreter} setup.py install_scripts --install-dir \"${ABS_SCRIPTS_DESTINATION}\"
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${python_interpreter} comes from

ament_cmake/ament_cmake_python/cmake/ament_python_install_package.cmake

Line 139 in 2bf27ce

get_executable_path(python_interpreter Python3::Interpreter BUILD)

The BUILD argument will result in the path being a generator expression:

ament_cmake/ament_cmake_core/cmake/core/get_executable_path.cmake

Line 61 in 2bf27ce

set(output_var "$<TARGET_PROPERTY:${target_or_path},LOCATION>")

A workaround to make the install(CODE warnings go away is to call get_executable_path again with the CONFIGURE arugment.

 get_executable_path(python_interpreter_config Python3::Interpreter CONFIGURE)
 # ...
install(CODE "execute_process(COMMAND ${python_interpreter} setup.py ...

The same workaround is already used a little lower in the file

ament_cmake/ament_cmake_python/cmake/ament_python_install_package.cmake

Lines 189 to 197 in 2bf27ce

get_executable_path(python_interpreter_config Python3::Interpreter CONFIGURE)
# compile Python files
install(CODE
"execute_process(
COMMAND
\"${python_interpreter_config}\" \"-m\" \"compileall\"
\"${CMAKE_INSTALL_PREFIX}/${ARG_DESTINATION}/${package_name}\"
)"
)

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Thanks a lot for this valuable hint. I adapted the code accordingly - sorry for the long delay.
Should be ready for merging now.

WORKING_DIRECTORY \"${build_dir}\")")
endforeach()

install(
DIRECTORY "${ARG_PACKAGE_DIR}/"
Expand Down