[Buildroot] [git commit branch/2018.11.x] boot/uboot: use HOSTCC_NOCCACHE as kconfig HOSTCC

Peter Korsgaard peter at korsgaard.com
Mon Jan 28 16:58:26 UTC 2019

commit: https://git.buildroot.net/buildroot/commit/?id=8d69d3761cfd3bdd587a6a6f5ee69c9fbbe383a5
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2018.11.x

At kconfig time, dependencies are not built, and therefore host-ccache
is not ready. Due to this, using $(HOSTCC) as the host compiler in
KCONFIG_OPTS does not work: a "make uboot-menuconfig" invocation from
a clean tree with ccache enabled fails.

This commit fixes this by using $(HOSTCC_NOCCACHE). We cannot rely on
the default value of HOSTCC passed by the kconfig-package
infrastructure, because $(UBOOT_MAKE_OPTS) also contains a HOSTCC
definition that would override the one passed by the kconfig-package

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
(cherry picked from commit 9d684a096718eb0020550827f9641dca3f4ed06e)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
 boot/uboot/uboot.mk | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/boot/uboot/uboot.mk b/boot/uboot/uboot.mk
index cbdfee6ac3..6977bcc064 100644
--- a/boot/uboot/uboot.mk
+++ b/boot/uboot/uboot.mk
@@ -227,8 +227,9 @@ UBOOT_KCONFIG_EDITORS = menuconfig xconfig gconfig nconfig
 # (which is typically wchar) but link with
 # $(HOST_DIR)/lib/libncurses.so (which is not).  We don't actually
 # need any host-package for kconfig, so remove the HOSTCC/HOSTLDFLAGS
-# override again.
+# override again. In addition, host-ccache is not ready at kconfig
+# time, so use HOSTCC_NOCCACHE.
 	@echo '  uboot-menuconfig       - Run U-Boot menuconfig'
 	@echo '  uboot-savedefconfig    - Run U-Boot savedefconfig'

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