dockcross/linux-xtensa-uclibc/Toolchain.cmake

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CMake
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set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_VERSION 1)
set(CMAKE_SYSTEM_PROCESSOR xtensa)
set(cross_triple "xtensa-fsf-linux-uclibc")
set(cross_root /usr/xcc/${cross_triple})
set(CMAKE_C_COMPILER $ENV{CC})
set(CMAKE_CXX_COMPILER $ENV{CXX})
set(CMAKE_Fortran_COMPILER $ENV{FC})
set(CMAKE_CXX_FLAGS "-I ${cross_root}/include/")
set(CMAKE_FIND_ROOT_PATH ${cross_root} ${cross_root}/${cross_triple})
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_SYSROOT ${cross_root}/${cross_triple}/sysroot)
set(CMAKE_CROSSCOMPILING_EMULATOR /usr/bin/qemu-xtensa)