Found a nice Oberon IDE at:
https://github.com/rochus-keller/Oberon
There are till some problems compiling code, see below.
I have built the IDE under OpenBSD 7.0 (amd64 and arm64 platforms).
* Download packages and populate build directory as per README.md.
* Install Qt5 and Mono: "pkg_add -v mono qt5"
* Go to "Oberon" directory: Execute "qmake-qt5 ObxIde2.pro"
* (arm64 platform only) edit Makefile to add "-fsigned-char" to C and C++ compiler flags
* Execute "gmake CC=clang CXX=clang++"
(1/2, tbc)
Editing code works (I only tried a simple "hello, world" module). Attempting to compile or run results in a core dump. Exporting to IL and C works, with these caveats:
* I can compile the C code by following the instructions in build.txt and substituting gcc with clang and adding compiler flags.
* For IL, the build directory contains run.sh and build.sh. These contain references to "./ilasm" and "./mono". Replacing these by "ilasm" and "mono" makes these scripts work.