0029410: DRAW - make DRAWEXE usable without environment settings

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Date Submitted

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0029410

Community

[OCCT] OCCT:DRAW

public

2018-01-02 21:53

2021-09-09 23:09

Reporter

abv

Assigned To

apn

Priority

normal

Severity

minor

Status

new

Resolution

open

Platform

OS Version

Product Version

Target Version

[OCCT] 7.7.0

Fixed in Version

Summary

0029410: DRAW - make DRAWEXE usable without environment settings

Description

Historically DRAW depends on environment variables and thus can be launched successfully only by the script which sets these variables according to the current setting (draw.bat or draw.sh).

This is not convenient: it is expected that executable (DRAWEXE) should be able to run correctly if started directly, without any pre-set variables.

To achieve this, we need to find good replacement of environment variables for two kinds of paths:

1. Paths to DRAW plugin binaries. Now command pload searches for these using standard paths supported by dlopen() on Linux / macOS or LoadLibrary() on Windows. If this is not the case (e.g. OCCT is installed to /usr/local on macOS), pload fails.

2. Paths to Tcl scripts and other resources. Now these paths are expected to be defined by a bunch of environment variables. There is some fallback code trying to find paths in the absence of variables, but these fallbacks are made on DRAW is running over sources (search OCCT code for "src/DrawResources"). This is not the case when OCCT is installed with "make install".

The most straightforward approach is to extend fallback code to perform search in default locations, starting from location of the current binary. However, more universal approach should be preferred if it exists.

Steps To Reproduce

On Linux or macOS:

1. Build OCCT using CMake and run make install

2. Start DRAWEXE directly

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related to

0030339

closed

apn

Open CASCADE

Configuration - add project files for qmake

Notes
(0083324) oan (developer) 2019-03-31 15:58 edited on: 2019-03-31 17:34	DC, what do you think about introduction of settings stored in *.ini file? Good for that, there are a lot of open source ini parsers, such as https://github.com/benhoyt/inih [^] or https://github.com/ndevilla/iniparser [^] Advantage is that it can be configured using cmake and also be human-readable.

Issue History
Date Modified	Username	Field	Change
2018-01-02 21:53	abv	New Issue
2018-01-02 21:53	abv	Assigned To	=> apn
2018-01-02 21:55	abv	Steps to Reproduce Updated	View Revisions
2019-01-21 10:49	kgv	Relationship added	related to 0030339
2019-03-31 15:58	oan	Note Added: 0083324
2019-03-31 17:34	oan	Note Edited: 0083324	View Revisions
2019-07-10 22:24	abv	Target Version	7.4.0 => 7.5.0
2020-09-11 15:43	utverdov	Target Version	7.5.0 => 7.6.0*
2021-09-09 23:09	kgv	Target Version	7.6.0* => 7.7.0