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Article #1754: FLTK 1.3.6 released on May 15, 2021
Created at 05:17 May 15, 2021 by AlbrechtS
We're pleased to announce the release of FLTK 1.3.6.
Even though FLTK 1.3.6 does not fix all known bugs we decided to release
FLTK 1.3.6 as it contains some bug fixes and adaptations
to new compiler releases.
One very important enhancement is support of macOS up to macOS 11 "Big Sur" on both Intel and Apple Silicon (M1) processors.
This release does not contain new "ABI features". The ABI (Application Binary Interface) is 100% compatible with release 1.3.5.
The new release 1.3.6 (source and documentation) can be downloaded here:
Changes in FLTK 1.3.6
This is the final release 1.3.6. There have been no changes since FLTK 1.3.6rc2.
Changes in FLTK 1.3.6rc2
FLTK 1.3.6rc2 fixes some minor issues in 1.3.6rc1, particularly macOS
bundle generation. It addresses an issue that bundles can't be executed
on macOS 11.3 Big Sur if built with configure/make after downloading
the release tarball because of the macOS "quarantine" feature.
Rename file 'VERSION' to 'fltk_version.dat' (#191)
Fix version number in doxygen docs
Fix build with Cairo for CMake < 3.13
CMake: fix old (pre 3.13) link_directories() usage
Enhance CMake build configuration summary
Refactor macOS bundle generation to avoid "quarantine"
Fix a new compiler warning
Changes in FLTK 1.3.6rc1
FLTK 1.3.6 is a maintenance release with new macOS Big Sur support
and some bug fixes. macOS Big Sur is supported on both Intel and the
new Apple Silicon (M1) chips.
CMake support has been improved but is not yet "perfect". Documentation
has been enhanced, bundled image libraries have been updated to current
The following lists are subsets of all commits. References in '(...)'
are either STR numbers (STR xxxx) or GitHub Issues or Pull Requests
Bug fixes and other improvements
Fix Fl::add_timeout() in draw() under Linux (STR 3188)
X11: Fix X Input Methods (XIM) (STR 3502, 3192)
Fix overly restrictive JPEG filter (#81)
Fix DND in read-only Fl_Input (Fl_Output) (#113)
Fix offscreen drawing under X11 (STR 3384)
Fix potential fluid crashes (STR 3420) + memory leak
Fix X11 copy-paste and drag-and-drop target selection (#182)
Fix CMake install procedure (#212)
Avoid "Bogus FL_MOVE/FL_DRAG events" (#76)
CMake: Document FLTKConfig.cmake and set FLTK_INCLUDE_DIR
Fix issue92, added -d debug flag to fluid (#92)
Merge pull request #176 from ComputerNerd/errmsg-fix-13
X11: add support for copy+paste of image within one app
Windows: add bitmap version of graphics when copying to clipboard
Fix use of Xrender extension with old, 16-bit framebuffers.
Fix for Fl_Native_File_Chooser under macOS 10.15 Catalina and ...
Restore macOS capacity to turn window fullscreen encompassing several screens.
Improve Fl_Copy_Surface under macOS
Set OPTION_USE_SYSTEM_LIBPNG/JPEG off under macOS by default
Have Fl_Pack::draw() call Fl_Group::init_sizes() on its parent group.
CMake support of the Darwin+XQuartz test platform
Add support of macOS "Big Sur" 11.0
Fix when building with SDK 10.15 and running with 11.0 Big Sur
Backport fix for issue #185 "Shared Image reload() loses initial dimensions" from branch 1.4
Fix fl_endpoints() for macOS platform that was not effective.
Fix stack corruption when loading GIF (pull request #200)
Restore ./configure --enable-x11 on macOS
Fix crash when terminating any macOS app by cmd-Q
Fix JIS Keyboard dead keys
For more information on previous releases see CHANGES in the root directory of the source distribution or directly in our FLTK source repository on GitHub:
CHANGES (as of Release 1.3.6).
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