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    SubjectRe: [PATCH] tools: iio: add ability to pass kernel headers
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    On 11/04/17 12:06, Sekhar Nori wrote:
    > Very often, especially when cross compiling, there is a need
    > to pass kernel headers different from those installed on the
    > build machine.
    >
    > Add support for doing this for iio utils by using the
    > 'INSTALL_HDR_PATH' environment variable. This is supported by
    > 'make headers_install' for installing kernel headers at a
    > user specified location. So you will do:
    >
    > $ make headers_install ARCH=arm INSTALL_HDR_PATH=<absolute-path>
    > $ make -C tools/iio ARCH=arm INSTALL_HDR_PATH=<absolute-path>
    >
    > Signed-off-by: Sekhar Nori <nsekhar@ti.com>

    It's a bit of an oddity as that usually refers to where to put
    the headers rather than where they are.

    Is there a more general solution? I couldn't find anything
    particularly consistent in tools.
    > ---
    > tools/iio/Makefile | 2 +-
    > 1 file changed, 1 insertion(+), 1 deletion(-)
    >
    > diff --git a/tools/iio/Makefile b/tools/iio/Makefile
    > index 5446d625e17d..75607043d6e2 100644
    > --- a/tools/iio/Makefile
    > +++ b/tools/iio/Makefile
    > @@ -1,5 +1,5 @@
    > CC = $(CROSS_COMPILE)gcc
    > -CFLAGS += -Wall -g -D_GNU_SOURCE
    > +CFLAGS += -Wall -g -D_GNU_SOURCE -I$(INSTALL_HDR_PATH)/include
    >
    > BINDIR=usr/bin
    > INSTALL_PROGRAM=install -m 755 -p
    >

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