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IF(NOT $ENV{LINUX_ROOT} EQUAL "")
SET(CMAKE_SYSTEM_NAME Linux)
SET(LINUX_ROOT $ENV{LINUX_ROOT})
STRING(REGEX REPLACE "\\\\" "/" LINUX_ROOT ${LINUX_ROOT})
message (STATUS "LINUX_ROOT is '${LINUX_ROOT}'")
SET(ARCHITECTURE_TRIPLE x86_64-unknown-linux-gnu)
SET(CMAKE_CROSSCOMPILING TRUE)
SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_SYSTEM_VERSION 1)
# sysroot
SET(CMAKE_SYSROOT ${LINUX_ROOT})
SET(CMAKE_LIBRARY_ARCHITECTURE ${ARCHITECTURE_TRIPLE})
# specify the cross compiler
SET(CMAKE_C_COMPILER ${CMAKE_SYSROOT}/bin/clang.exe)
SET(CMAKE_C_COMPILER_TARGET ${ARCHITECTURE_TRIPLE})
SET(CMAKE_C_FLAGS "-target ${ARCHITECTURE_TRIPLE} --sysroot ${LINUX_ROOT} ")
SET(CMAKE_CXX_COMPILER ${CMAKE_SYSROOT}/bin/clang++.exe)
SET(CMAKE_CXX_COMPILER_TARGET ${ARCHITECTURE_TRIPLE})
SET(CMAKE_CXX_FLAGS "-target ${ARCHITECTURE_TRIPLE} --sysroot ${LINUX_ROOT} ")
SET(CMAKE_FIND_ROOT_PATH ${LINUX_ROOT})
#set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY) # hoping to force it to use ar
#set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
#set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
ELSE()
MESSAGE("LINUX_ROOT environment variable not defined!")
ENDIF()
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