[Buildroot] [git commit branch/2017.05.x] pngquant: doesn't support building with ccache

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=7c748b54081d7c57a8589246a54b85dc6198aa08
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2017.05.x

pngquant's homegrown configure script doesn't understand CC with a
space, so we can't use ccache with it. Only the host variant is
affected: for the target, we call ccache from the toolchain-wrapper so
it's transparent to the configure script.

This wasn't seen in the autobuilders since they never enable
BR2_CCACHE.

To test, use any configuration and do
make BR2_CCACHE=y host-pngquant

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
(cherry picked from commit 4a6168db97db6501af42e96091da3218ae64d5c1)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 package/pngquant/pngquant.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/pngquant/pngquant.mk b/package/pngquant/pngquant.mk
index 4a6f32f..938603a 100644
--- a/package/pngquant/pngquant.mk
+++ b/package/pngquant/pngquant.mk
@@ -36,6 +36,7 @@ endef
 define HOST_PNGQUANT_CONFIGURE_CMDS
 	(cd $(@D) && \
 		$(HOST_CONFIGURE_OPTS) \
+		CC=$(HOSTCC_NOCCACHE) \
 		./configure --prefix=$(HOST_DIR)/usr \
 		--without-lcms2 \
 	)