# Cross-compile for aarch64 Linux (Steam Frame) from an x86_64 Debian multiarch environment.
# Used by the "cross-arm64" preset inside docker/cross-arm64.Dockerfile; see scripts/cross-build.sh.

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)

set(CMAKE_C_COMPILER   aarch64-linux-gnu-gcc)
set(CMAKE_CXX_COMPILER aarch64-linux-gnu-g++)

# Debian multiarch: target libraries live in /usr/lib/aarch64-linux-gnu; headers are shared.
set(CMAKE_LIBRARY_ARCHITECTURE aarch64-linux-gnu)
set(CMAKE_FIND_ROOT_PATH /usr/aarch64-linux-gnu)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH)
set(ENV{PKG_CONFIG_LIBDIR} /usr/lib/aarch64-linux-gnu/pkgconfig:/usr/share/pkgconfig)

# Qt 6 cross builds need a host Qt for its code generators (moc, rcc, qmlcachegen, …).
set(QT_HOST_PATH /usr CACHE PATH "Host Qt prefix")
set(QT_HOST_PATH_CMAKE_DIR /usr/lib/x86_64-linux-gnu/cmake CACHE PATH "Host Qt CMake dir")
set(CMAKE_PREFIX_PATH /usr/lib/aarch64-linux-gnu/cmake)

# Lets CMake/Qt deploy tooling inspect target binaries.
set(CMAKE_OBJDUMP aarch64-linux-gnu-objdump)