Messages in this thread Patch in this message | | | From | Alexander Lobakin <> | Subject | [PATCH bpf-next] samples: bpf: fix linking xdp_router_ipv4 after migration | Date | Mon, 4 Apr 2022 13:54:51 +0200 |
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Users of the xdp_sample_user infra should be explicitly linked with the standard math library (`-lm`). Otherwise, the following happens:
/usr/bin/ld: xdp_sample_user.c:(.text+0x59fc): undefined reference to `ceil' /usr/bin/ld: xdp_sample_user.c:(.text+0x5a0d): undefined reference to `ceil' /usr/bin/ld: xdp_sample_user.c:(.text+0x5adc): undefined reference to `floor' /usr/bin/ld: xdp_sample_user.c:(.text+0x5b01): undefined reference to `ceil' /usr/bin/ld: xdp_sample_user.c:(.text+0x5c1e): undefined reference to `floor' /usr/bin/ld: xdp_sample_user.c:(.text+0x5c43): undefined reference to `ceil [...]
That happened previously, so there's a block of linkage flags in the Makefile. xdp_router_ipv4 has been transferred to this infra quite recently, but hasn't been added to it. Fix.
Fixes: 85bf1f51691c ("samples: bpf: Convert xdp_router_ipv4 to XDP samples helper") Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com> --- samples/bpf/Makefile | 1 + 1 file changed, 1 insertion(+)
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index b4fa0e69aa14..342a41a10356 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -219,6 +219,7 @@ TPROGLDLIBS_xdp_redirect += -lm TPROGLDLIBS_xdp_redirect_cpu += -lm TPROGLDLIBS_xdp_redirect_map += -lm TPROGLDLIBS_xdp_redirect_map_multi += -lm +TPROGLDLIBS_xdp_router_ipv4 += -lm TPROGLDLIBS_tracex4 += -lrt TPROGLDLIBS_trace_output += -lrt TPROGLDLIBS_map_perf_test += -lrt -- 2.35.1
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