Possible to specify a cross compiler?

[aka-mj]

Is it possible to specify an alternative compiler path? My project uses its own compiler but clang-uml picks up the compiler installed on the system, which is older and doesn't recognize the newer headers (utility, optional, chrono, ..).

[bkryza]

@aka-mj Typically, compiler path should be set properly in your compile_commands.json as the first argument of each compile command.

If it is, and the compiler is GCC-compatible, you can run clang-uml with --query-driver . argument, which will extract the necessary include paths from the compiler and add them to the compile commands.

If your compile_commands.json for some reason does not have the right compiler, you can pass a custom compiler in the --query-driver option, e.g.:

$ clang-uml --query-driver arm-none-eabi-g++

Furthermore, if this doesn't help, you can manually add or remove compilation flags in the .clang-uml config, e.g.:

add_compile_flags:
  - -I/opt/my_toolchain/include
remove_compile_flags:
  - -I/usr/include

See also here