mingw cross compilation from Linux to Windows about polly HOT 9 CLOSED

Looks similar to:

• https://github.com/ruslo/polly/blob/master/compiler/gcc-cross-compile.cmake

I guess you can start with:

• https://github.com/ruslo/polly/blob/master/linux-gcc-x64.cmake

To create linux-mingw64 toolchain.

from polly.

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

I think we don't need this if you're using Hunter. find_package should never return anything from system if Hunter used, see:

• https://docs.hunter.sh/en/latest/faq/interaction-with-other-package-managers.html

from polly.

where should I set the windres variable needed for cross-compiling to windows

set(CMAKE_RC_COMPILER ${TOOLCHAIN_PREFIX}-windres)

Edit:
and more importantly, where is the following variable set?

set(CMAKE_SYSTEM_NAME Windows)

from polly.

set(CMAKE_RC_COMPILER ${TOOLCHAIN_PREFIX}-windres)

I think it will not hurt if we will add it to the compiler/gcc-cross-compile.cmake.

set(CMAKE_SYSTEM_NAME Windows)

In top linux-mingw64.

from polly.

should we add emulator support?
https://cmake.org/cmake/help/v3.3/variable/CMAKE_CROSSCOMPILING_EMULATOR.html

with this we could run mingw-w64 cross compiled tests with wine64 or armhf targets with qemu

from polly.

should we add emulator support?

It will not hurt I guess. Is emulator a part of mingw-w64 package?

from polly.

no, it would need an extra emulator installed. And for mingw that would be wine (to run windows binaries)

from polly.

no, it would need an extra emulator installed

In this case we can add CMAKE_CROSSCOMPILING_EMULATOR variable but only if it will not return error if emulator not found.

from polly.

Closing inactive discussion.

from polly.