How to link libconfig library for Raspberry Pi application

Question

Currently, I am modifying the C application for Raspberry Pi. I build the application with this command:

make

Now I want to use libconfig library. I have this below problems

pi@raspberrypi ~/yyyyy $ make
make --no-print-directory all-am
  CC       tools/xxxxx.o
  CCLD     tools/xxxxx
tools/xxxxx.c:2434: undefined reference to `config_read_file'
tools/xxxxx.c:2441: undefined reference to `config_lookup_string'
tools/xxxxx.c:2446: undefined reference to `config_destroy'
tools/xxxxx.c:2436: undefined reference to `config_destroy'

In the libconfig manual they said:

To link with the library, specify ‘-lconfig’ as an argument to the linker.

How can I link with make command?

Here is an example: http://stackoverflow.com/questions/6451342/library-path-in-makefiles — Oleksandr Kravchuk, Oct 16 '15 at 09:33
I am editting bluez app. http://www.bluez.org/download/ . Its make file is too large to post to stackoverflow — Nam Vu, Oct 16 '15 at 09:35

score 1 · Accepted Answer · edited Oct 22 '15 at 02:18

1

Without looking into bluez's build system, I can offer simple approach - using environment variables.

# export CPPFLAGS='-I/home/oleksandr/software/libconfig/include'
# export LDFLAGS='-L/home/oleksandr/software/libconfig/lib/'
# ./configure

This should generate you Makefile, which you can use to compile bluez and link it with libconfig.

edited Oct 22 '15 at 02:18

Nam Vu

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answered Oct 16 '15 at 09:55

Oleksandr Kravchuk

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I Install libconfig-dev by: sudo apt-get install libconfig-dev. Then I run: dpkg -L libconfig-dev. But I can not find /include and /lib/ folder – Nam Vu Oct 16 '15 at 10:25
Did you have any ideas? – Nam Vu Oct 19 '15 at 04:25
1

@ZuzooVn extract the package and look where the files would be installed; or simply search: find / -iname libconfig\* – Oleksandr Kravchuk Oct 19 '15 at 09:52

How to link libconfig library for Raspberry Pi application

1 Answers1