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cmake_minimum_required(VERSION 3.0)
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project(biscuit_user)
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enable_language(ASM)
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# Path
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aux_source_directory(c SRCS)
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aux_source_directory(c/libs LIBS)
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include_directories(c/include)
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set(EXECUTABLE_OUTPUT_PATH ${ARCH})
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# Find the kernel release
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execute_process(
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COMMAND uname -r
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OUTPUT_VARIABLE KERNEL_RELEASE
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# Find the headers
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find_path(KERNEL_HEADERS_DIR
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include/linux/user.h
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PATHS /usr/lib/modules/${KERNEL_RELEASE}/build /usr/src/linux-headers-${KERNEL_RELEASE}
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)
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# Toolchain
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if (${ARCH} STREQUAL i386)
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if(APPLE)
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set(PREFIX i386-elf-)
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endif ()
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set(CMAKE_C_FLAGS "-m32 -mno-red-zone")
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elseif (${ARCH} STREQUAL x86_64)
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set(PREFIX x86_64-linux-musl-)
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set(CMAKE_C_FLAGS "-m64 -mno-red-zone")
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elseif (${ARCH} STREQUAL riscv32)
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set(PREFIX riscv64-unknown-elf-)
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set(CMAKE_C_FLAGS "-march=rv32imac -mabi=ilp32 -mcmodel=medany")
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elseif (${ARCH} STREQUAL riscv64)
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set(PREFIX riscv64-linux-musl-)
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set(CMAKE_C_FLAGS "-march=rv64imafdc -mabi=lp64d -mcmodel=medany")
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elseif (${ARCH} STREQUAL aarch64)
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set(PREFIX aarch64-linux-musl-)
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else ()
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message("Unsupported arch: ${ARCH}")
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endif ()
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set(CMAKE_ASM_COMPILER ${PREFIX}gcc)
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set(CMAKE_C_COMPILER ${PREFIX}gcc)
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set(CMAKE_RANLIB ${PREFIX}ranlib)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-pointer-to-int-cast -Wno-format -MMD -MP -O -g -fPIC -static -std=gnu99")
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set(CMAKE_ASM_FLAGS ${CMAKE_C_FLAGS})
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set(CMAKE_C_LINK_FLAGS "${LINK_FLAGS} -pthread") # override default value to get rid of '-Wl,-search_paths_first -Wl,-headerpad_max_install_names'
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set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS) # override default value to get rid of '-rdynamic' on Linux
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if (KERNEL_HEADERS_DIR)
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|
include_directories(${KERNEL_HEADERS_DIR}/include/uapi)
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endif ()
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# Executable
|
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foreach (PATH ${SRCS})
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|
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if (NOT ${ARCH} STREQUAL riscv64 OR NOT "${PATH}" MATCHES "^c/(usertests).c$")
|
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|
|
get_filename_component(NAME ${PATH} NAME_WE)
|
|
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|
|
add_executable(${NAME} ${PATH})
|
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|
|
endif ()
|
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|
|
endforeach ()
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