address@hidden gsl-matrix-view-test]$ gcc gsl-matrix-view-test.c -I /u7/matthias/opt/include -L /u7/matthias/opt/lib -lgsl -lgslcblas
address@hidden gsl-matrix-view-test]$ ldd a.out
	linux-vdso.so.1 =>  (0x00007fff8799b000)
	libgsl.so.0 => /u7/matthias/opt/lib/libgsl.so.0 (0x00007f00c2810000)
	libgslcblas.so.0 => /u7/matthias/opt/lib/libgslcblas.so.0 (0x00007f00c25d6000)
	libc.so.6 => /lib64/libc.so.6 (0x000000309d600000)
	libm.so.6 => /lib64/libm.so.6 (0x000000309da00000)
	/lib64/ld-linux-x86-64.so.2 (0x000000309d200000)
address@hidden gsl-matrix-view-test]$ ./a.out
GSL version: 1.16

A = 0x17c6010
A->data = 0x17c6070
A->nrows = 40
A->ncols = 40

B = 0x17c9280
B->data = 0x17c92e0
B->nrows = 40
B->ncols = 40

A_ul = 0x7fffdb7bad70
A_ul->data = 0x17cac80
A_ul->nrows = 20
A_ul->ncols = 20

B_lr = 0x7fffdb7bad70
B_lr->data = 0x17cac80
B_lr->nrows = 20
B_lr->ncols = 20