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authorJean-Philippe Brucker <jean-philippe@linaro.org>2021-12-16 19:38:39 +0300
committerAndrii Nakryiko <andrii@kernel.org>2021-12-16 23:15:04 +0300
commitbf1be903461a404a9d1c720b0872501ca35abc89 (patch)
treec43f38b213475c82f80c6e896177fa8e2af87399 /tools/bpf
parentcebdb7374577ac6e14afb11311af8c2c44a259fa (diff)
downloadlinux-bf1be903461a404a9d1c720b0872501ca35abc89.tar.xz
tools/resolve_btfids: Support cross-building the kernel with clang
The CROSS_COMPILE variable may be present during resolve_btfids build if the kernel is being cross-built. Since resolve_btfids is always executed on the host, we set CC to HOSTCC in order to use the host toolchain when cross-building with GCC. But instead of a toolchain prefix, cross-build with clang uses a "-target" parameter, which Makefile.include deduces from the CROSS_COMPILE variable. In order to avoid cross-building libbpf, clear CROSS_COMPILE before building resolve_btfids. Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20211216163842.829836-3-jean-philippe@linaro.org
Diffstat (limited to 'tools/bpf')
-rw-r--r--tools/bpf/resolve_btfids/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile
index 751643f860b2..9ddeca947635 100644
--- a/tools/bpf/resolve_btfids/Makefile
+++ b/tools/bpf/resolve_btfids/Makefile
@@ -19,6 +19,7 @@ CC = $(HOSTCC)
LD = $(HOSTLD)
ARCH = $(HOSTARCH)
RM ?= rm
+CROSS_COMPILE =
OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/