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*    Como instalar livrarias cientificas GSL         *
*              no UBUNTU 18.04 LTS                   * 
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sudo apt-get install libgsl-dev   - development package

sudo apt-get install gsl-bin      - binary package

sudo apt-get install libgsl-dbg   - debug symbols package

sudo apt-get install libgsl23     - library package

sudo apt-get install libgslcblas0 - blas library package

sudo apt autoremove               - para remover pacotes desnecessarios

Um manual enorme se encontra em: 

https://www.gnu.org/software/gsl/doc/html/intro.html#obtaining-gsl


Para compilar os programas, basta:

gcc programa.c -o executavel -lgsl -lgslcblas -lm