[Buildroot] [git commit] package/opencv4: do not detect ccache

commit: https://git.buildroot.net/buildroot/commit/?id=2def1ccccbece30f53c4b98d8e806c5f77b2c47f
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master

OpenCV-4's buildsystem will try to detect ccache and use it if
available. This may yield a system-installed ccache.

However, in Buildroot, ccache is entirely hidden away and handled in the
toolchain wrapper.

Forcibly disable detection of ccache.

Commit 505e7f47715c77d8586444a4fefe4a190b77aaad already applied this
change to opencv3.

Signed-off-by: Fabrice Fontaine <redacted>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <redacted>
---
 package/opencv4/opencv4.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/opencv4/opencv4.mk b/package/opencv4/opencv4.mk
index 3cc6c05769..040fc63e4e 100644
--- a/package/opencv4/opencv4.mk
+++ b/package/opencv4/opencv4.mk

@@ -49,6 +49,7 @@ endif
 # OpenCV build options
 OPENCV4_CONF_OPTS += \
 	-DBUILD_WITH_STATIC_CRT=OFF \
+	-DENABLE_CCACHE=OFF \
 	-DENABLE_COVERAGE=OFF \
 	-DENABLE_FAST_MATH=ON \
 	-DENABLE_IMPL_COLLECTION=OFF \

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