• Roland McGrath's avatar
    kconfig CROSS_COMPILE option · 84336466
    Roland McGrath authored
    This adds CROSS_COMPILE as a kconfig string so you can store it in
    .config.  Then you can use plain "make" in the configured kernel build
    directory to do the right cross compilation without setting the
    command-line or environment variable every time.
    With this, you can set up different build directories for different kernel
    configurations, whether native or cross-builds, and then use the simple:
    	make -C /build/dir M=module-source-dir
    idiom to build modules for any given target kernel, indicating which one
    by nothing but the build directory chosen.
    I tried a version that defaults the string with env="CROSS_COMPILE" so
    that in a "make oldconfig" with CROSS_COMPILE in the environment you can
    just hit return to store the way you're building it.  But the kconfig
    prompt for strings doesn't give you any way to say you want an empty
    string instead of the default, so I punted that.
    Signed-off-by: default avatarRoland McGrath <roland@redhat.com>
    Cc: Sam Ravnborg <sam@ravnborg.org>
    Cc: Anibal Monsalve Salazar <anibal@debian.org>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Michal Marek <mmarek@suse.cz>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
Makefile 52.1 KB