[CMake] cmake gfortran-libs linking x86_64

[luxInteg]

Greetings,



I am learning cmake   I have the following gfortran libraries on my computer:-

rt [ ~ ]$ 
rt [ ~ ]$ ls -l  /usr/lib/*gfortran*
-rw-r--r-- 1 root root 8489924 Jul 27 12:19 /usr/lib/libgfortran.a
-rwxr-xr-x 1 root root     952 Jul 27 12:19 /usr/lib/libgfortran.la
lrwxrwxrwx 1 root root      20 Jul 27 12:18 /usr/lib/libgfortran.so -> 
libgfortran.so.3.0.0
lrwxrwxrwx 1 root root      20 Jul 27 12:19 /usr/lib/libgfortran.so.3 -> 
libgfortran.so.3.0.0
-rwxr-xr-x 1 root root 4104076 Jul 27 12:20 /usr/lib/libgfortran.so.3.0.0
rt [ ~ ]$ 
rt [ ~ ]$ ls -l /usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.2/*gfortran*
-rw-r--r-- 1 root root 8902 Jul 27 12:18 /usr/lib/gcc/x86_64-unknown-linux-
gnu/4.4.2/libgfortranbegin.a
-rwxr-xr-x 1 root root  923 Jul 27 12:18 /usr/lib/gcc/x86_64-unknown-linux-
gnu/4.4.2/libgfortranbegin.la
rt [ ~ ]$ 

QUESTION1: are there envars  to set in a  cmake project  to  enable linking to 
these programs  and if so how so? 
QURSTION2: If QUESTION1 is {no} can one  say set  F_LDFLAGS="-L/usr/lib/ -
L/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.2/"  and would it make sense in a 
cmale project?
QUESTION3: libgfortranbegin is avaibale only as a static library,   can 
fortran shared libraries   still be linked to it?

advice would be appreciated.

sincerely
luxInteg