$ 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.