0030568: CMake: unified functionality to collect prerequisites

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Date Submitted

Last Update

0030568

Open CASCADE

[OCCT] OCCT:Configuration

public

2019-03-13 14:54

2019-03-20 12:51

Reporter

oan

Assigned To

apn

Priority

normal

Severity

minor

Status

new

Resolution

open

Platform

OS Version

Product Version

Target Version

[OCCT] 7.4.0*

Fixed in Version

Summary

0030568: CMake: unified functionality to collect prerequisites

Description

In OCCT-based projects and OCCT itself it is common to install all 3rdparty libraries along with target project to avoid usage of bat files, setting necessary environment (like INSTALL_FREEIMAGE option).

In OCCT-related projects it is needed to specify libraries and their locations explicitly. At the same time, CMake supports cross-platform tools aimed to collect dependensies of target binary file (either library or executable).

It is suggested to create common procedure distributable with OCCT and located in cmake folder, e.g. cmake_prerequisites.cmake, that could be used from successor projects to collect its dependencies and simplify usage of OCCT as an SDK.

CMake reference: https://cmake.org/cmake/help/v3.0/module/GetPrerequisites.html [^]
Example of usage is given in "Steps to Reproduce".

Note that this functionality requires target projects be compiled as soon as it works with binaries only. Thus, this stage can be implemented as a custom target procedure:

add_custom_target(
    prerequisites ALL
    COMMAND call "${CMAKE_BINARY_DIR}/env.bat" ${VCVER} ${ARCH} $(ConfigurationName)
    COMMAND ${CMAKE_COMMAND} -DBUILD_TYPE=$(Configuration) -P cmake_prerequisites.cmake
    COMMENT "Collecting prerequisites"
    VERBATIM
)

Steps To Reproduce

include (GetPrerequisites)
set (DIRS "${OCCT_BIN_DIR}")
get_prerequisites(${CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG}/${PROJECT_NAME}.dll DEPENDENCIES 1 1 "" "")
foreach(DEPENDENCY_FILE ${DEPENDENCIES})
  gp_resolve_item(${CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG}/${PROJECT_NAME}.dll "${DEPENDENCY_FILE}" "" ${DIRS} resolved_file)

  get_prerequisites("${resolved_file}" DEPENDENCIES_1 1 1 "" "")
  foreach(DEPENDENCY_FILE_1 ${DEPENDENCIES_1})
     message("${DEPENDENCY_FILE_1}")
  endforeach()
endforeach()

....

<install all prerequisites>

Issue History
Date Modified	Username	Field	Change
2019-03-13 14:54	oan	New Issue
2019-03-13 14:54	oan	Assigned To	=> bugmaster
2019-03-13 14:54	oan	Relationship added	related to 0027560
2019-03-20 12:51	bugmaster	Assigned To	bugmaster => apn

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