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Third-party libraries: adding GSL to CODE::blocks

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humesit:
ok i just downloaded the pre-compiled libraries 1.8 version  from sourceforge! thanks for that.
i added the \include directory to the searchdirectory of my compiler under "compiler and debugger"
but no he can´t find the functions that are declared in these .h files there.

this is a simply example for the use of gsl, copied from the documentation.

--- Code: ---    #include <stdio.h>
     #include <gsl/gsl_sf_bessel.h>

     int
     main (void)
     {
       double x = 5.0;
       double y = gsl_sf_bessel_J0(x);

        printf ("J0(%g) = %.18e\n", x, y);
       return 0;
     }

--- End code ---

--- Code: ---buid message:
obj\Debug\main.o||In function `main':|
C:\test\besseltest2\main.cpp|8|undefined reference to `_gsl_sf_bessel_J0'|
||=== Build finished: 1 errors, 0 warnings ===|

build log:
mingw32-g++.exe -Wall -fexceptions  -g    -IC:\Programme\GnuWin32\include  -c C:\test\besseltest2\main.cpp -o obj\Debug\main.o
mingw32-g++.exe -LC:\Programme\GnuWin32\include  -o bin\Debug\besseltest2.exe obj\Debug\main.o   
obj\Debug\main.o: In function `main':
C:/test/besseltest2/main.cpp:8: undefined reference to `_gsl_sf_bessel_J0'
collect2: ld returned 1 exit status


--- End code ---


thanks for all the help. i´m a german student, currently studying in china near shanghai.
there is no help from the students/profs here and it certainly wasn`t my idea to use C++. :?

digital19:
I had the same problem.

For me, I had to add 'libgsl.a' to the link libraries in "Linker Settings".

nenin:

--- Quote from: digital19 on November 04, 2008, 06:44:10 am ---I had the same problem.

For me, I had to add 'libgsl.a' to the link libraries in "Linker Settings".

--- End quote ---
For sure, you always must to add libgsl.a (and sometimes, libgslcblas.a) to "Link libraries:"

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