Radix cross Linux

   373         kx 
   373         kx How to Build External Modules
   373         kx -----------------------------
   373         kx 
   373         kx To build external modules, you must have a prebuilt kernel available that contains
   373         kx the configuration and header files used in the build. Also, the kernel must have been
   373         kx built with modules enabled.
   373         kx 
   373         kx Radix cross Linux provides a 'kernel-source' package installed here.
   373         kx 
   373         kx This kernel source not ready for build modules out-of-tree because Radix cross Linux
   373         kx provides only cross-compiled packages.
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   373         kx To prepare kernel source you have to do following:
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   373         kx     $ cd /usr/src/@KERNEL_SOURCE@
   373         kx     $ make oldconfig
   373         kx     $ make modules_prepare
   373         kx 
   373         kx  If you are using a Radix cross Linux distribution kernel,
   373         kx there will be a 'kernel-source' package for the kernel you are running provided by
   373         kx Radix cross Linux distribution.
   373         kx 
   373         kx This will make sure the kernel contains the information required. The target exists
   373         kx solely as a simple way to prepare a kernel source tree for building external modules.
   373         kx 
   373         kx NOTE: 'modules_prepare' will not build Module.symvers even if CONFIG_MODVERSIONS is set;
   373         kx therefore, a full kernel build needs to be executed to make module versioning work.
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   373         kx 
   373         kx Command Syntax
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   373         kx The command to build an external module is:
   373         kx 
   373         kx     $ make -C <path_to_kernel_src> M=$PWD
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   373         kx The kbuild system knows that an external module is being built due to the 'M=<dir>'
   373         kx option given in the command.
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   373         kx To build against the running kernel use:
   373         kx 
   373         kx     $ make -C /lib/modules/`uname -r`/build M=$PWD
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   373         kx Then to install the module(s) just built, add the target 'modules_install' to the command:
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   373         kx     $ make -C /lib/modules/`uname -r`/build M=$PWD modules_install
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   373         kx 
   373         kx For mode details please look at
   373         kx   https://www.kernel.org/doc/html/latest/kbuild/modules.html
   373         kx page.