Building FoundationDB would fail if CMake uses Makefile

[xis19]

CMake generates problematic Makefile which not being able to create actorcompiler.exe. The error is

make[2]: *** No rule to make target 'actorcompiler.exe', needed by 'flow/ActorCollection.actor.g.cpp'.  Stop.

[spraza]

@xis19 Curious what's your use-case for using Make vs Ninja? And do we support Make?

[xis19]

@xis19 Curious what's your use-case for using Make vs Ninja? And do we support Make?

I was trying to set up a minimal RHEL9 build environment and use the most essential build tools. Not sure if we support Make but for the same CMakeLists.txt if CMake generates problematic Makefile while reasonable build.ninja, the compiler's backend might be buggy, or the build.ninja has the same problem yet not being triggered.

[spraza]

Got it, thanks for the context. Fwiw, README.md mentions:

Install [Ninja](https://ninja-build.org/) (optional, but recommended)

If Ninja is optional, I would take that to mean that people use Make and therefore Make should be working.

the compiler's backend might be buggy

Agreed.