[Buildroot] [PATCH 1/3] package/pkg-kconfig: pass HOSTCC during kconfig steps
peter at korsgaard.com
Wed Jan 16 22:39:12 UTC 2019
>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni at bootlin.com> writes:
> The kconfig build logic uses the HOSTCC variable to find the host
> compiler. It makes sense to explicitly pass a value to this variable,
> pointing to the host compiler used by Buildroot.
> During the kconfig step, host-ccache is not ready (host-ccache is only
> a dependency to the configure step of packages), so we use
> Packages currently using the kconfig-package fell into two categories:
> - Those not passing any HOSTCC value. For such packages, it was the
> default host compiler detected by the kconfig build logic that was
> used. ccache was therefore never used. With this commit, those
> packages will now be using the host compiler detected by
> Buildroot. Packages in this situation: at91bootstrap3, barebox,
> busybox, swupdate, uclibc, xvisor.
> - Those passing a HOSTCC value. Such packages were passing $(HOSTCC),
> which doesn't work as host-ccache will not be ready. This commit
> does not fix them, as they still override HOSTCC. It will be fixed
> in followup commits. Packages in this situation: uboot and
> linux. Note that linux was a bit special, because it has a
> KCONFIG_DEPENDENCIES on the toolchain package, so in fact
> host-ccache was ready.
> So practically speaking, this commit does not fix anything, as the two
> only problematic packages that use $(HOSTCC) are not fixed. However,
> it makes things more correct by explicitly telling kconfig which
> compiler to use.
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Bye, Peter Korsgaard
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