Open CASCADE Technology 7.9.1 Released

[dpasukhi]

Open Cascade is delighted to announce the release of Open CASCADE Technology version 7.9.1 to the public.

Overview

Version 7.9.1 is a maintenance release incorporating over 30 improvements and bug fixes compared to version 7.9.0.

Download & Installation

You can obtain OCCT 7.9.1 in several ways:

• Windows users: Download pre-built binaries directly from the GitHub release page
• Source code: Clone or download the repository and checkout tag V7_9_1:

  git clone https://github.com/Open-Cascade-SAS/OCCT.git
  cd OCCT
  git checkout V7_9_1

• Package managers: Updates for various package managers (vcpkg, conan, etc.) are expected soon.

For detailed build instructions, please refer to the official documentation.

What's New in OCCT 7.9.1

Configuration & Build System

• Update VTK configuration and enable optional components (#395)
• Update file globbing and condition checks for installation paths (#399)
• Extend CMake file filter regex (#400)
• Modify VTK 9x handling (#401)
• Update VTK optional components (#403)
• Remove BUILD_PATCH option in CMake (#418)
• Checking for FILES content (#424)
• Enhance Qt5 directory detection for Windows (#419)
• Remove -symbolic linker flag (#432)
• TBB configuration prioritization to release (#496)
• Fixed paths to 3rd-party in cmake configuration (#523)

Testing & Quality

• Repeating failed tests in GitHub Actions (#412)
• Inspector build error on latest CMake (#477)
• Add a new compilation on Clang without PCH (#540)

Foundation Classes

• Host resolving by itself (#457)
• Update signal handling for GLIBC compatibility on Linux (#458)
• Checking for MallInfo version (#459)

Modeling

• Degenerated curves were not handled by Arrange function (#396)
• Improve handling of polygon parameters in NURBS conversion (#410)
• Handle void bounding box case in BRepBndLib::AddOptimal (#470)
• Bounding BSpline periodic tolerance issue (#468)
• Periodic BSpline curve bounding (#493)
• XCAFDoc_Editor::RescaleGeometry does not rescale translation of roots reference (#529)
• BRepFilletAPI_MakeFillet Segfault with two curves and rim (#532)
• General Fuse (BOPAlgo_PaveFiller) optimization (#514)

Visualization

• Refactor mouse click handling logic for improved double-click detection (#385)
• AIS_Shape bounding box re-computation is not working properly (#422)

Data Exchange

• DE Wrapper invalidating parameters after 'Load' (#393)
• Datum Axis extraction issue (#407)
• STEP: AP242 SchemaName Remove dot (#448)
• IGES Export: Missing Model Curves in transfer cache (#483)
• Small optimization of StepData_StepReaderData (#543)

Documentation

• Enable server-based search and external search options in Doxyfile

Full Changelog: V7_9_0...V7_9_1

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This discussion was created from the release Open CASCADE Technology 7.9.1 Released.

[dpasukhi]

Windows VC version is now available for download.

Compared to version V7_9_0, this update introduces a delivery build with precompiled headers (PCH).
To enable PCH, make sure to link the OCCT package using CMake.

Key updates:

• Fixed an issue with VTK linking.
• Fixed CMake package linking issues: third-party library paths are now correctly set (previously, absolute paths in the package were invalid).
• Removed the -symbolic linker flag for GCC and Clang to avoid RTTI issues.