derek.holloway
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47 lines
1.4 KiB
CMake
47 lines
1.4 KiB
CMake
# FindKernelHeaders.cmake
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# Finds Linux kernel headers for building kernel modules
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#
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# This module defines:
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# KERNEL_BUILD_DIR - Directory containing kernel build files
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# KERNEL_VERSION - Kernel version string
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# KernelHeaders_FOUND - Whether kernel headers were found
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# Get kernel version if not specified
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if(NOT KERNEL_VERSION)
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execute_process(
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COMMAND uname -r
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OUTPUT_VARIABLE KERNEL_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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endif()
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# Find kernel build directory
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if(NOT KERNEL_BUILD_DIR)
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set(KERNEL_BUILD_DIR "/lib/modules/${KERNEL_VERSION}/build")
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endif()
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# Validate that the kernel build directory exists
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if(EXISTS "${KERNEL_BUILD_DIR}")
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set(KernelHeaders_FOUND TRUE)
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message(STATUS "Found kernel headers: ${KERNEL_BUILD_DIR}")
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message(STATUS "Kernel version: ${KERNEL_VERSION}")
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# Verify essential kernel build files exist
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if(NOT EXISTS "${KERNEL_BUILD_DIR}/Makefile")
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message(WARNING "Kernel Makefile not found in ${KERNEL_BUILD_DIR}")
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set(KernelHeaders_FOUND FALSE)
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endif()
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else()
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set(KernelHeaders_FOUND FALSE)
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message(WARNING "Kernel build directory not found: ${KERNEL_BUILD_DIR}")
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endif()
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# Standard find_package handling
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(KernelHeaders
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REQUIRED_VARS KERNEL_BUILD_DIR
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VERSION_VAR KERNEL_VERSION
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)
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mark_as_advanced(KERNEL_BUILD_DIR KERNEL_VERSION)
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