Makefile: fix empty MK_ARCH when using ccache
One can use ccache by prefixing the typical CROSS_COMPILE value with
"ccache " (e.g. "ccache aarch64-gnu-linux-" for Aarch64). This however
makes the MK_ARCH empty because sed won't find a match anymore since it
expects the CROSS_COMPILE value to start with the actual toolchain (with
an unlimited number of white spaces before).
This is failing builds since commit 7506c1566998 ("sandbox: Report host
default-filename in native mode").
Add "ccache" prefix to ignore but participate in the matching regex used
by sed to identify the target architecture.
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
diff --git a/Makefile b/Makefile
index da742ce..2eaae42 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,7 @@
ifeq ("", "$(CROSS_COMPILE)")
MK_ARCH="${shell uname -m}"
else
- MK_ARCH="${shell echo $(CROSS_COMPILE) | sed -n 's/^[[:space:]]*\([^\/]*\/\)*\([^-]*\)-[^[:space:]]*/\2/p'}"
+ MK_ARCH="${shell echo $(CROSS_COMPILE) | sed -n 's/^\(ccache\)\?[[:space:]]*\([^\/]*\/\)*\([^-]*\)-[^[:space:]]*/\3/p'}"
endif
unexport HOST_ARCH
ifeq ("x86_64", $(MK_ARCH))