diff options
Diffstat (limited to 'cmake/FindKernelHeaders.cmake')
| -rw-r--r-- | cmake/FindKernelHeaders.cmake | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/cmake/FindKernelHeaders.cmake b/cmake/FindKernelHeaders.cmake index 2fe2dcb..7c1f8ed 100644 --- a/cmake/FindKernelHeaders.cmake +++ b/cmake/FindKernelHeaders.cmake @@ -15,6 +15,10 @@ if(NOT KERNEL_INSTALL_DIR) CACHE PATH "Path to install Linux kernel modules") endif(NOT KERNEL_INSTALL_DIR) +if(NOT EXISTS "${KERNEL_BUILD_DIR}/Module.symvers") + message(FATAL_ERROR "Module.symvers not found in ${KERNEL_BUILD_DIR}") +endif() + # find the Linux kernel headers from given KERNEL_BUILD_DIR find_path(KernelHeaders_INCLUDE_DIR NAMES linux/kernel.h @@ -24,7 +28,18 @@ find_path(KernelHeaders_INCLUDE_DIR NO_DEFAULT_PATH) # get Linux kernel headers version -string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" KernelHeaders_VERSION ${KernelHeaders_INCLUDE_DIR}) +file(READ "${KERNEL_BUILD_DIR}/include/generated/utsrelease.h" tmpvar) +string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" KernelHeaders_VERSION ${tmpvar}) +if("${KernelHeaders_VERSION}" EQUAL "") + file(READ "${KERNEL_BUILD_DIR}/include/config/kernel.release" tmpvar) + string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" KernelHeaders_VERSION ${tmpvar}) +endif() +if("${KernelHeaders_VERSION}" EQUAL "") + string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" KernelHeaders_VERSION ${KernelHeaders_INCLUDE_DIR}) +endif() +if("${KernelHeaders_VERSION}" EQUAL "") + message(FATAL_ERROR "Cannot determine kernel version") +endif() include(FindPackageHandleStandardArgs) find_package_handle_standard_args(KernelHeaders @@ -33,11 +48,6 @@ find_package_handle_standard_args(KernelHeaders VERSION_VAR KernelHeaders_VERSION FAIL_MESSAGE "Linux kernel headers are not available! Please install them to build kernel modules!") -if(KernelHeaders_FOUND) - set(KernelHeaders_INCLUDE_DIRS ${KernelHeaders_INCLUDE_DIR}/include - CACHE PATH "Path to Linux kernel header includes") -endif(KernelHeaders_FOUND) - mark_as_advanced(KernelHeaders_INCLUDE_DIR KernelHeaders_MODULE_INSTALL_DIR) # print found information @@ -46,5 +56,4 @@ if(${CMAKE_VERSION} VERSION_GREATER "3.15.0") message(VERBOSE "KERNEL_INSTALL_DIR: ${KERNEL_INSTALL_DIR}") message(VERBOSE "KernelHeaders_FOUND: ${KernelHeaders_FOUND}") message(VERBOSE "KernelHeaders_VERSION: ${KernelHeaders_VERSION}") - message(VERBOSE "KernelHeaders_INCLUDE_DIRS: ${KernelHeaders_INCLUDE_DIRS}") endif(${CMAKE_VERSION} VERSION_GREATER "3.15.0") |