prefix=/usr/local
exec_prefix=/usr/local
libdir=/usr/local/lib
includedir=/usr/local/include
GSL_CBLAS_LIB=-lgslcblas

Name: GSL
Description: GNU Scientific Library
Version: 2.7
Libs: -L/usr/local/lib -lgsl ${GSL_CBLAS_LIB} -lm -lm 
Cflags: -I/usr/local/include