Re: [Help-gsl] Cannot compile example.c

[Jochen Küpper]

César Asensio <address@hidden> writes:

> The command used for compilation is simply
>
>     gcc example.c
>
> and the error message is
>
> /cygdrive/c/temp/ccvkPjgO.o:example.c:(.text+0x3a): undefined reference to
> `_gsl_sf_bessel_J0'
> collect2: ld returned 1 exit status
>
> Someone can help me?

How about reading the manual?

,----[ (info "(gsl-ref)Linking programs with the library") ]
| The library is installed as a single file, `libgsl.a'.  A shared
| version of the library `libgsl.so' is also installed on systems that
| support shared libraries.  The default location of these files is
| `/usr/local/lib'.  If this directory is not on the standard search path
| of your linker you will also need to provide its location as a command
| line flag.
| 
|    To link against the library you need to specify both the main
| library and a supporting CBLAS library, which provides standard basic
| linear algebra subroutines.  A suitable CBLAS implementation is
| provided in the library `libgslcblas.a' if your system does not provide
| one.  The following example shows how to link an application with the
| library,
| 
|      $ gcc -L/usr/local/lib example.o -lgsl -lgslcblas -lm
| 
| The default library path for `gcc' searches `/usr/local/lib'
| automatically so the `-L' option can be omitted when GSL is installed
| in its default location.
`----

Greetings,
Jochen
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