Consider adding cmakeExecutable to presets

[czoido]

Changelog: Feature: Add cmakeExecutable to configure preset.
Docs: conan-io/docs#3548

Closes: #15427

[memsharded]

looks good

[jcar87]

Very good! just one comment, but it shouldn't be a problem.

I wonder if it would be useful to have a an attribute in CMakeToolchain that the users could set in the generate() method, if they so wish? , in case they're in a universe where cmake is not in the system path, and also not a tool_requirement (think a CI machine that has multiple CMake versions installed in different places)

[memsharded]

I wonder if it would be useful to have a an attribute in CMakeToolchain that the users could set in the generate() method, if they so wish? , in case they're in a universe where cmake is not in the system path, and also not a tool_requirement (think a CI machine that has multiple CMake versions installed in different places)

We already have

self._cmake_program = conanfile.conf.get("tools.cmake:cmake_program", default="cmake")

Inside the CMake helper, to override which CMake is being used. Maybe that is what could go directly to the presets as well?

[czoido]

I wonder if it would be useful to have a an attribute in CMakeToolchain that the users could set in the generate() method, if they so wish? , in case they're in a universe where cmake is not in the system path, and also not a tool_requirement (think a CI machine that has multiple CMake versions installed in different places)

We already have

self._cmake_program = conanfile.conf.get("tools.cmake:cmake_program", default="cmake")

Inside the CMake helper, to override which CMake is being used. Maybe that is what could go directly to the presets as well?

I made changes to read that conf with preference