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configure: update libbpf check for modern api

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The system libbpf check would unconditionally fail with a modern libbpf
because the example program used outdated and removed library functions.
Update the test program so that system libbpf check can pass again.

Signed-off-by: Ronan Pigott <ronan@rjp.ie>
This commit is contained in:
Ronan Pigott
2023-03-21 19:54:39 -07:00
committed by Toke Høiland-Jørgensen
parent eeb154d7a1
commit 91f2e1528a
1 changed files with 2 additions and 3 deletions
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5
configure vendored
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@ -106,18 +106,17 @@ check_libbpf()
int main(int argc, char **argv) {
void *ptr;
DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts, .pin_root_path = "/path");
DECLARE_LIBBPF_OPTS(bpf_xdp_set_link_opts, lopts, .old_fd = -1);
(void) bpf_object__open_file("file", &opts);
(void) bpf_program__name(ptr);
(void) bpf_map__set_initial_value(ptr, ptr, 0);
(void) bpf_set_link_xdp_fd_opts(0, 0, 0, &lopts);
(void) bpf_xdp_attach(0, 0, 0, NULL);
(void) bpf_tc_attach(ptr, ptr);
(void) bpf_object__next_program(ptr, ptr);
return 0;
}
EOF
libbpf_err=$($CC -o $TMPDIR/libbpftest $TMPDIR/libbpftest.c $LIBBPF_CFLAGS -lbpf 2>&1)
libbpf_err=$($CC -o $TMPDIR/libbpftest $LIBBPF_CFLAGS $LIBBPF_LDLIBS $TMPDIR/libbpftest.c 2>&1)
if [ "$?" -eq "0" ]; then
echo "SYSTEM_LIBBPF:=y" >>$CONFIG
echo 'CFLAGS += ' $LIBBPF_CFLAGS >> $CONFIG