macOS Build

[gogins]

Update the csound-extended build system produce an installable macOS package (.dmg or just .pkg?). This will involve solving a number of problems.

• [x] csound builds and installs from sources.
• [x] libmusicxml2 builds and installs from sources.
• [x] Eigen 3 installs from homebrew.
• [x] Lua 5.4.3 installs from homebrew.
• [x] Python 2.7 and 3.9 install from homebrew.
• [x] OpenCV 4 installs from homebrew.
• [x] PortSMF is required. It is not in homebrew. I can either build it from sources or use the local version.
• [x] doxygen installs from homebrew.
• [x] SWIG 4.0.2 installs from homebrew.
• [x] FLTK installs version 1.3.8 from homebrew which should work, but FLTK thus installed lacks find_package support for FLTK. I may have to write a FindFLTK.cmake that uses fltk-config, or perform a local build and installation of FLTK. I have removed FLTK in favor of OpenCV.
• [x] The macOS build fails for lack of an installed csnd6 library. Fixed by using CMake to find it.
• [x] Everything now builds, but there is a link error at loading in Python. Not any more, not sure why.
• [x] Write and run on Linux and macOS an image_to_score_test.cpp piece.

[gogins]

I should probably use either only fltk-image or only opencv for loading and processing images.

I build FLTK from sources and installed it, it produced the CMake configuration file.

[gogins]

I updated csound-extended's CMakeLists.txt to be more cross-platform.

[gogins]

Can't find elements.h, what is that. OK, it's part of libmusicxml. Looks like a real mess. As installed from the submodule:

mkg@xenakis:~/libmusicxml/build$ xmlversion
libmusicxml version 3.19
musicxml to guido converter version 3.0
musicxml to lilypond converter version 0.92

This installs the inner headers. But as installed from a fresh clone of the libmusicxml repository:

mkg@xenakis:~/libmusicxml/build/bin$ ./xmlversion 
libmusicxml version 3.20
musicxml to guido converter version 3.1

On my MacBook it is also version 3.20.

My mistake was using the default dev branch of the musicxml library instead of the master branch.

[gogins]

The problem now is not finding the fltk.framework directory. I will remove the FLTK dependency.

FLTK image formats:

• Pixmap
• Bitmap
• RGB
• XBM
• GIF
• XPM
• BMP
• JPEG
• PNG
• PNM

OpenCV image formats:

• Windows bitmap (bmp)
• Portable image formats (pbm, pgm, ppm)
• Sun raster (sr, ras)
• JPEG (jpeg, jpg, jpe)
• JPEG 2000 (jp2)
• TIFF files (tiff, tif)
• Portable network graphics (png)

Should make little or no practical difference.

[gogins]

There are undefined symbols in the Python module for CsoundAC on macOS because I moved what had been System.cpp into System.hpp to make it into a header file only library that can be used without linking to the CsoundAC library.

I can convince SWIG to bring these functions into the Python module, or I can un-refactor the code.

[gogins]

For standard macOS framework bundle contents and layout see:

https://developer.apple.com/library/archive/documentation/MacOSX/Conceptual/BPFrameworks/Concepts/FrameworkAnatomy.html#//apple_ref/doc/uid/20002253-99920-BAJFEJFI