Packaging issues

[edubart]

While creating a tools package inside an Alpine riscv64 environment I've hit the following issues that increased packaging complexity, which we could simplify:

• make should just compile all tools (without Docker!)
  1. compile libcmt
  2. compile sys-utils
  3. compile rollup-http tools
• compiling sys-utils should not require installing libcmt-dev first, if it's already built in the working tree
• make install should exist and install everything
• make install-tools (all bins)
• make install-libcmt (*.so)
• make install-libcmt-dev (*.h, *.a and pkgconfig)
• there is the need to set TOOLCHAIN_PREFIX= for all make commands even when in riscv64 environment, this should be removed
• DESTDIR is not working, probably rename TARGET_DESTDIR to it
• make install should never strip by default, stripping binaries is a task done by packager builder, so the packager can create debug symbols packages from it
• add ways to pass extra CFLAGS, CXXFLAGS and LDFLAGS. In this case I may want to package statically linked to libgcc, so my package can have less dependencies leading to smaller rootfs image.

[mpolitzer]

libcmt supports cross compilation, the issue is that it requires custom linux headers, ones with CMIO available.
They would have to be made available for this to work.

[edubart]

They would have to be made available for this to work.

I'm starting to generate the package cartesi-machine-guest-linux-headers which installs /usr/include/linux in a riscv64 environment. Then to build cartesi-machine-guest-tools, its makedepends will include cartesi-machine-guest-linux-headers.

[edubart]

I am working on some of these issues on #88