Here is the problems I meet and the solutions I see from other pepople. Just a note!

• first, download gsl-2.1.tar.gz from gslnet.
• unpackage it: $ tar -xzvf gsl-2.1.tar.gz.
• get into the file $ cd gsl-2.1
• compile it $ ./configure --prefix=/usr/local/gsl
• install it $sudo make && make check && make install
• edit the the path in .barsrccd ~ and vi .barsrc
• added in

#___ gsl ___

export PATH=/usr/local/gsl/bin:${PATH}

export C_INCLUDE_PATH=/usr/local/gsl/include:${C_INCLUDE_PATH}

export LD_LIBRARY_PATH=/usr/local/gsl/lib:${LD_LIBRARY_PATH}

• complete

solution to cannot find -lxxx

I have installed the gsl library on my CentOS 7 computer and complete it. However, when I use gcc to compile a program, in which it calls gsl to do some calculation, I have suffered

/usr/bin/ld: cannot find -lgsl

/usr/bin/ld: cannot find -lgslcblas

I checked my lib in /usr/lib, and find there is no libgsl* exit. For -lxxx represent 'lib+xxx+.so'.

Then I checked my computer: $ find / -name libgsl.so

I find the file in /usr/local/gsl/lib/libgsl.so, where I installed the gsl.

Then I linked it to /usr/lib

$ sudo ln -s /usr/loca/gsl/lib/libgsl.so /usr/lib/

The same to solve some same problems, maybe, I think.

The end!