scripts: support extra host compiler flags

Allow the user to configure extra flags to pass to the host compiler
at build time. Applies to both C and C++.

Useful on Ubuntu to turn off the stack protector and fortify defaults
so the program stands a better chance of running on other distros.

Signed-off-by: Michael Hope <michael.hope@linaro.org>
[yann.morin.1998@anciens.enib.fr: put the custom flags at the end]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

# This file declares functions for bare metal kernel (IE. none)

# Copyright 2008 Yann E. MORIN

# Licensed under the GPL v2. See COPYING in the root of this package

CT_DoKernelTupleValues() {

    # For bare-metal, there is no kernel part in the tuple

    CT_TARGET_KERNEL=

}

do_kernel_get() {

    :

}

do_kernel_extract() {

    :

}

do_kernel_headers() {

    :

}