Re: [fltk/fltk] macOS: Generating fltk.framework (Issue #961) - Forums

Here is what I get with the current GitHub versions of FLTK and TigerVNC. Output shortened to what I relevant.

% git clone https://github.com/fltk/fltk.git fltk-1.4.git
% cd fltk-1.4.git
% cmake -B build/Makefiles -DFLTK_BUILD_TEST=off -DFLTK_BUILD_SHARED_LIBS=on
% cmake --build build/Makefiles
% sudo cmake --build build/Makefiles --target uninstall
% sudo cmake --build build/Makefiles --target install
% cd ..
% git clone https://github.com/TigerVNC/tigervnc.git tigervnc.git
Fix tigervnc .vncviewer/DesktopWindow.cxx:157: error: reference to non-static member function...
% cd tigervnc.git
% cmake -B build
-- Found FLTK: /usr/local/lib/libfltk_images.dylib;/usr/local/fltk.framework
                                              bad  ~~~~~~~~~~~~~~~~~~~~~~~~~
% cmake --build build
[ 83%] Linking CXX executable vncviewer
ld: framework 'fltk' not found
clang: error: linker command failed with exit code 1 (use -v to see invocation)
% sudo rm -R /usr/local/FLTK.framework
% rm build/CMakeCache.txt
% cmake -B build
-- Found FLTK: /usr/local/lib/libfltk_images.dylib;/usr/local/lib/libfltk.dylib
                                             good  ~~~~~~~~~~~~~~~~~~~~~~~~~
% cmake --build build
% ./build/vncviewer/vncviewer

CMake picks up on /usr/local/fltk.framework, but that directory is not a framework in the macOS Framework sense of things. Under macOS, a directory with a name ending in .framework has a very specific internal structure, and would have to contain an info.plist, the FLTK header files and all libraries to make any sense.

Make stopped searching for libfltk.dylib after it already found fltk.framework, but since fltk.framework contains no library, the build fails. If it does not fail for you, you may still have leftovers from old fltk installations that may be picked up ten before /usr/local/fltk.framework.

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