Can't build simulator on windows

[ljoets]

Hi,

I follow the documentation to the letter to build my own simulator on Windows 11:
https://github.com/numworks/epsilon/blob/master/epsilon/docs/build/README.md
But I'm getting errors:

admin@hppd400sff-59 MSYS ~/epsilon
# tools/restore_symlinks.sh
rm: cannot remove '.venv': No such file or directory
rm: cannot remove 'tools': Is a directory
ln: failed to create symbolic link '.venv': No such file or directory
ln: failed to create symbolic link 'tools/tools': File exists
tools/restore_symlinks.sh: line 8: cd: ../poincare/poincarejs: No such file or directory
rm: cannot remove '.emsdk-version': No such file or directory
ln: failed to create symbolic link '.emsdk-version': No such file or directory

admin@hppd400sff-59 MSYS ~/epsilon
# make PLATFORM=simulator clean
make[1]: Entering directory '/home/admin/epsilon/epsilon'
make[1]: gcc: No such file or directory
/bin/sh: line 1: [: -lt: unary operator expected
make[1]: pkg-config: No such file or directory
make[1]: pkg-config: No such file or directory
/bin/sh: line 1: pkg-config: command not found
make[1]: Leaving directory '/home/admin/epsilon/epsilon'
make[1]: Entering directory '/home/admin/epsilon'
make[1]: *** scandium: No such file or directory.  Stop.
make[1]: Leaving directory '/home/admin/epsilon'
make: *** [Makefile:21: clean] Error 2

What am I doing wrong?

[lennsteenbergen]

I'm also having this issue on both NixOS and Ubuntu 24.04.

[lennsteenbergen]

I found a (temporary fix) for building the files.

Change your directory to epsilon/epsilon and run
make -j8 PLATFORM=linux epsilon.bin

for windows builds, use
make -j8 PLATFORM=windows epsilon.exe
This should (partially) solve your issue.

[ljoets]

Wonderful!
I just needed to install two additional Python libraries on Windows:
pacman -S mingw-w64-x86_64-python-lz4
pacman -S mingw-w64-x86_64-python-pypng
And the build worked :-)