acmake_set_install_prefix.cmake

if(ACMAKE_SET_INSTALL_PREFIX_INCLUDED)
    return()
endif()
set(ACMAKE_SET_INSTALL_PREFIX_INCLUDED TRUE)

macro(acmake_set_install_prefix)
    if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
        set(CMAKE_INSTALL_PREFIX ${CMAKE_CURRENT_BINARY_DIR}/intall CACHE PATH "install path" FORCE)
    endif()
endmacro()