$ gfortran rotationtest.f -o rotationtest -I/usr/include
    Warning: cblas_f77.h:9: Illegal preprocessor directive
    Warning: cblas_f77.h:10: Illegal preprocessor directive
    Warning: cblas_f77.h:12: Illegal preprocessor directive
    Warning: cblas_f77.h:13: Illegal preprocessor directive
    Warning: cblas_f77.h:15: Illegal preprocessor directive
    Warning: cblas_f77.h:21: Illegal preprocessor directive
    Warning: cblas_f77.h:23: Illegal preprocessor directive
    Warning: cblas_f77.h:25: Illegal preprocessor directive
    Warning: cblas_f77.h:27: Illegal preprocessor directive
    Warning: cblas_f77.h:29: Illegal preprocessor directive
    Warning: cblas_f77.h:31: Illegal preprocessor directive
    Warning: cblas_f77.h:33: Illegal preprocessor directive
    Warning: cblas_f77.h:36: Illegal preprocessor directive
    Warning: cblas_f77.h:39: Illegal preprocessor directive
    Warning: cblas_f77.h:41: Illegal preprocessor directive
    Warning: cblas_f77.h:45: Illegal preprocessor directive
    Warning: cblas_f77.h:46: Illegal preprocessor directive
    Warning: cblas_f77.h:195: Illegal preprocessor directive
    Warning: cblas_f77.h:199: Illegal preprocessor directive
    Warning: cblas_f77.h:200: Illegal preprocessor directive
    Warning: cblas_f77.h:349: Illegal preprocessor directive
    Warning: cblas_f77.h:353: Illegal preprocessor directive
    Warning: cblas_f77.h:354: Illegal preprocessor directive
    Warning: cblas_f77.h:503: Illegal preprocessor directive
    Warning: cblas_f77.h:754: Illegal preprocessor directive
    Warning: cblas_f77.h:755: Illegal preprocessor directive
    Warning: cblas_f77.h:761: Illegal preprocessor directive
    Warning: cblas_f77.h:762: Illegal preprocessor directive
    Warning: cblas_f77.h:764: Illegal preprocessor directive
    cblas_f77.h:1.1:
        Included at rotationtest.f:3:
    
    /*                                                                      
     1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:1.2:
        Included at rotationtest.f:3:
    
    /*                                                                      
      1
    Error: Invalid character in name at (1)
    cblas_f77.h:2.3:
        Included at rotationtest.f:3:
    
     * cblas_f77.h                                                          
       1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:2.3:
        Included at rotationtest.f:3:
    
     * cblas_f77.h                                                          
       1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:3.3:
        Included at rotationtest.f:3:
    
     * Written by Keita Teranishi                                           
       1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:3.3:
        Included at rotationtest.f:3:
    
     * Written by Keita Teranishi                                           
       1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:4.3:
        Included at rotationtest.f:3:
    
     *                                                                      
       1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:5.3:
        Included at rotationtest.f:3:
    
     * Updated by Jeff Horner                                               
       1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:5.3:
        Included at rotationtest.f:3:
    
     * Updated by Jeff Horner                                               
       1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:6.3:
        Included at rotationtest.f:3:
    
     * Merged cblas_f77.h and cblas_fortran_header.h                        
       1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:6.3:
        Included at rotationtest.f:3:
    
     * Merged cblas_f77.h and cblas_fortran_header.h                        
       1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:7.3:
        Included at rotationtest.f:3:
    
     */                                                                     
       1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:16.4:
        Included at rotationtest.f:3:
    
       #include <fortran.h>                                                 
        1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:16.4:
        Included at rotationtest.f:3:
    
       #include <fortran.h>                                                 
        1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:17.4:
        Included at rotationtest.f:3:
    
       #define F77_CHAR _fcd                                                
        1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:17.4:
        Included at rotationtest.f:3:
    
       #define F77_CHAR _fcd                                                
        1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:18.4:
        Included at rotationtest.f:3:
    
       #define C2F_CHAR(a) ( _cptofcd( (a), 1 ) )                           
        1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:18.4:
        Included at rotationtest.f:3:
    
       #define C2F_CHAR(a) ( _cptofcd( (a), 1 ) )                           
        1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:19.4:
        Included at rotationtest.f:3:
    
       #define C2F_STR(a, i) ( _cptofcd( (a), (i) ) )                       
        1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:19.4:
        Included at rotationtest.f:3:
    
       #define C2F_STR(a, i) ( _cptofcd( (a), (i) ) )                       
        1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:20.4:
        Included at rotationtest.f:3:
    
       #define F77_STRLEN(a) (_fcdlen)                                      
        1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:20.4:
        Included at rotationtest.f:3:
    
       #define F77_STRLEN(a) (_fcdlen)                                      
        1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:24.4:
        Included at rotationtest.f:3:
    
       #define F77_INT long                                                 
        1
    Error: Non-numeric character in statement label at (1)
    cblas_f77.h:24.4:
        Included at rotationtest.f:3:
    
       #define F77_INT long                                                 
        1
    Error: Unclassifiable statement at (1)
    cblas_f77.h:28.4:
        Included at rotationtest.f:3:
    
       #define FCHAR F77_CHAR                                               
        1
    Error: Non-numeric character in statement label at (1)
    Fatal Error: Error count reached limit of 25.