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Fix undefined symbols in
libpf_lib.so
(#4312)
When I build `nav2_amcl` with `-Wl,--no-undefined` I noticed `libpf_lib.so` has undefined symbols. This PR correctly links `libpf_lib.so` to `libm` so all symbols can be found. You can verify this by executing the following command: ``` ldd -r ./build/nav2_amcl/src/pf/libpf_lib.so linux-vdso.so.1 (0x00007ffd1f8c0000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x000074e909a00000) /lib64/ld-linux-x86-64.so.2 (0x000074e909e60000) undefined symbol: ceil (./build/nav2_amcl/src/pf/libpf_lib.so) undefined symbol: atan2 (./build/nav2_amcl/src/pf/libpf_lib.so) undefined symbol: sin (./build/nav2_amcl/src/pf/libpf_lib.so) undefined symbol: hypot (./build/nav2_amcl/src/pf/libpf_lib.so) undefined symbol: cos (./build/nav2_amcl/src/pf/libpf_lib.so) undefined symbol: log (./build/nav2_amcl/src/pf/libpf_lib.so) undefined symbol: sqrt (./build/nav2_amcl/src/pf/libpf_lib.so) undefined symbol: floor (./build/nav2_amcl/src/pf/libpf_lib.so) ``` Signed-off-by: Ramon Wijnands <[email protected]>
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