Re: [Boost-users] linking

From: Hin-Tak Leung (hin-tak.leung_at_[hidden])
Date: 2006-06-22 14:10:53

The syntax is wrong. You should do
g++ -Wall -o test test.o  -L /usr/local/lib -lboost_program_options

-L for the location,
-l for the library file's name (dropping the lib at the beginning
and the .so at the end), and preferably without space between -l and
the library's name.

assuming "/usr/local/lib/libboost_program_options.so" is
a link to the library file.

Tamas Hegedus wrote:
> Hi,
> 
> I am newbie to c/cpp and I have linking and/or loading shared library 
> problem.
> 
> I can not link with dynamic libraries.
> 
> Thanks for your help in advance,
> Tamas
> 
> *** 1 ***
> [violin]$ ldconfig -p | grep libboost_program_options
>          libboost_program_options.so.1 (libc6) => 	
>                    /usr/lib/libboost_program_options.so.1
> 
> *** 2 ***
> As I do not have the file /usr/lib/libboost_program_options.so.1 I 
> created a link:
> libboost_program_options.so.1 -> 
> libboost_program_options-gcc-1_33_1.so.1.33.1
> 
> *** 3 ***
> Compiling my src file
> [violin]$ g++ -Wall -I /usr/local/include/boost-1_33_1 -c test.cpp
> 
> *** 4A ***
> [violin]$ g++ -Wall -o test test.o 
> /usr/local/lib/libboost_program_options-gcc-1_33_1.so.1.33.1
> 
> [violin]$ ./test
> ./test: error while loading shared libraries: 
> libboost_program_options-gcc-1_33_1.so.1.33.1: cannot open shared object 
> file: No such file or directory
> 
> *** 4B ***
> [violin]$ g++ -Wall -o test test.o 
> /usr/local/lib/libboost_program_options.so.1
> 
> [violin]$ ./test
> 
> ./test: error while loading shared libraries: 
> libboost_program_options-gcc-1_33_1.so.1.33.1: cannot open shared object 
> file: No such file or directory
> 
> *** 4C ***
> [violin]$ g++ -Wall -o test test.o 
> /usr/local/lib/libboost_program_options-gcc-1_33_1.a
> 
> [violin]$ ./test
> Compression level was not set.
> 
>