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| author | Björn Töpel <bjorn.topel@gmail.com> | 2020-11-18 10:16:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-30 13:53:15 +0300 |
| commit | 6014c6ed74f1aa61da6286bfd6738950200333a8 (patch) | |
| tree | 945bebc57d657112a9a88c1ff4c6be030e42ddcd /tools | |
| parent | 98283ebab45ca3b47361abb65ea641a5d7687042 (diff) | |
| download | linux-6014c6ed74f1aa61da6286bfd6738950200333a8.tar.xz | |
selftests/bpf: Fix broken riscv build
[ Upstream commit 6016df8fe874e1cf36f6357d71438b384198ce06 ]
The selftests/bpf Makefile includes system include directories from
the host, when building BPF programs. On RISC-V glibc requires that
__riscv_xlen is defined. This is not the case for "clang -target bpf",
which messes up __WORDSIZE (errno.h -> ... -> wordsize.h) and breaks
the build.
By explicitly defining __risc_xlen correctly for riscv, we can
workaround this.
Fixes: 167381f3eac0 ("selftests/bpf: Makefile fix "missing" headers on build with -idirafter")
Signed-off-by: Björn Töpel <bjorn.topel@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Luke Nelson <luke.r.nels@gmail.com>
Link: https://lore.kernel.org/bpf/20201118071640.83773-2-bjorn.topel@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 542768f5195b..136df8c10281 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -220,7 +220,8 @@ $(RESOLVE_BTFIDS): $(BPFOBJ) | $(BUILD_DIR)/resolve_btfids \ # build would have failed anyways. define get_sys_includes $(shell $(1) -v -E - </dev/null 2>&1 \ - | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') + | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ +$(shell $(1) -dM -E - </dev/null | grep '#define __riscv_xlen ' | sed 's/#define /-D/' | sed 's/ /=/') endef # Determine target endianness. |