I'm trying to use scilab, and begining to play demonstarations from Scilab Console (?->Scilab Demonstrations). Some demonstrations failed with trying to use F77. For example, Simulation->Wheel simulation->Simulation with ode (needs a Fortran Compiler) failed with the following output. 

Startup execution:
  loading initial environment
 ilib_compile: An error occurred during the compilation:
 
!libtool: ignoring unknown tag F77                                        !
!                                                                         !
!libtool: unrecognized option `-I/usr/local/share/scilab//../../include/sc!
!     ilab/'                                                              !
!                                                                         !
!Try `libtool --help' for more information.                               !

ilib_compile: The command was:
make  CFLAGS="-I/usr/local/share/scilab//../../include/scilab/ " CXXFLAGS="-I/usr/local/share/scilab//../../include/scilab/ " FFLAGS="-I/usr/local/share/scilab//../../include/scilab/ "
link(wheel_path + 'libwheel' + getdynlibext(), ['wheel','wheelg'],'f');
                                                            !--error 236 
link: The shared archive was not loaded: Cannot open "/mnt2/tmp/SCI_TMP_62272_hPI0QG/libwheel.so"
at line      18 of exec file called by :    

at line      17 of function wheel_build_and_load called by :  
at line      16 of function demo_wheel2 called by :  
demo_wheel2();
at line      74 of exec file called by :    
o_gui_update();exec(script_path,-1);clear script_path;;if exists("%oldgcbo"
while executing a callback


Another example is n-pendulum; it some times crashed scilab itself with Segmentation fault.

Fix: 

Sorry, but no idea.
How-To-Repeat: Simply make install and run some demonstrations on scilab.