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Unsure of how to handle this linker error.. (not really ROS related)

asked 2014-10-02 15:16:51 -0500

DevonW gravatar image

From https://github.com/PR2/linux_networki... as the CMakeLists used to compile this program. Was wondering if anyone has experience with these sorts of errors. I understand the undefined reference is a missing link between a library.. my major concern would be: how to convert this https://github.com/PR2/linux_networki... to the Hydro one presented prior. Any suggestions/advice would be appreciated.

/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 0 has invalid symbol index 10 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 1 has invalid symbol index 11 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 2 has invalid symbol index 2 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 3 has invalid symbol index 2 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 4 has invalid symbol index 10 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 5 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 6 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 7 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 8 has invalid symbol index 2 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 9 has invalid symbol index 2 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 10 has invalid symbol index 11 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 11 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 12 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 13 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 14 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 15 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 16 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 17 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 18 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 19 has invalid symbol index 12 /usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 20 has invalid symbol index 19 /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/crt1.o: In function _start': (.text+0x20): undefined reference tomain' CMakeFiles/wpa_supplicant_node.dir/src/nodes/wpa_supplicant_node.cpp.o: In function RosApi::init2()': wpa_supplicant_node.cpp:(.text._ZN6RosApi5init2Ev[RosApi::init2()]+0x119): undefined ... (more)

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answered 2014-10-02 15:41:56 -0500

ahendrix gravatar image

You need to call pkg_check_modules(WPA_SUPPLICANT REQUIRED libwpa_supplicant) in order to set up the cmake variables for the wpa_supplicant include directories and libraries.

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Hm, I did that and it didn't work out. checking for module 'libwpa_supplicant' -- package 'libwpa_supplicant' not found.

DevonW gravatar image DevonW  ( 2014-10-02 16:24:10 -0500 )edit

The old package was buiding wpa_supplicant from source. You'll need to replicate that in cmake: https://github.com/PR2/linux_networki...

ahendrix gravatar image ahendrix  ( 2014-10-02 16:47:28 -0500 )edit

Or just ditch the whole package. It isn't used anywhere on the PR2.

ahendrix gravatar image ahendrix  ( 2014-10-02 16:47:59 -0500 )edit

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Asked: 2014-10-02 15:16:51 -0500

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Last updated: Oct 02 '14