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| author |   Jean-Philippe Brucker <jean-philippe@linaro.org> | 2021-12-16 16:38:39 +0000 |
|---|---|---|
| committer |   Andrii Nakryiko <andrii@kernel.org> | 2021-12-16 12:15:04 -0800 |
| commit | bf1be903461a404a9d1c720b0872501ca35abc89 (patch) | |
| tree | c43f38b213475c82f80c6e896177fa8e2af87399 /tools/bpf/resolve_btfids/Makefile | |
| parent | tools: Help cross-building with clang (diff) | |
| download | linux-dev-bf1be903461a404a9d1c720b0872501ca35abc89.tar.xz linux-dev-bf1be903461a404a9d1c720b0872501ca35abc89.zip | |
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 '')
| -rw-r--r-- | tools/bpf/resolve_btfids/Makefile | 1 |
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/ |