我想在 fortran 中测试和使用 PESTc，所以我写了一些非常简单且为 null 的东西，例如 (petscexe.F)：
PROGRAM petscexe
INCLUDE 'petscsys.h'
END PROGRAM petscexe
看看能不能正确导入头文件。
我用 gfortran 编译文件： gfortran petscexe.F -I /opt/local/lib/petsc/include/finclude
头文件位于我计算机中的此文件夹 (/opt/local/lib/petsc/include/finclude) 中。所以一切都应该没问题，但是...
错误是
Warning: petscsys.h:5: Illegal preprocessor directive
Warning: petscsys.h:6: Illegal preprocessor directive
Warning: petscsys.h:7: Illegal preprocessor directive
Warning: petscsys.h:9: Illegal preprocessor directive
Warning: petscsys.h:10: Illegal preprocessor directive
Warning: petscsys.h:11: Illegal preprocessor directive
Warning: petscsys.h:20: Illegal preprocessor directive
Warning: petscsys.h:22: Illegal preprocessor directive
Warning: petscsys.h:24: Illegal preprocessor directive
Warning: petscsys.h:87: Illegal preprocessor directive
Warning: petscsys.h:88: Illegal preprocessor directive
Warning: petscsys.h:89: Illegal preprocessor directive
Warning: petscsys.h:90: Illegal preprocessor directive
Warning: petscsys.h:91: Illegal preprocessor directive
Warning: petscsys.h:92: Illegal preprocessor directive
Warning: petscsys.h:93: Illegal preprocessor directive
Warning: petscsys.h:94: Illegal preprocessor directive
Warning: petscsys.h:119: Illegal preprocessor directive
Warning: petscsys.h:121: Illegal preprocessor directive
Warning: petscsys.h:123: Illegal preprocessor directive
Warning: petscsys.h:139: Illegal preprocessor directive
Warning: petscsys.h:143: Illegal preprocessor directive
Warning: petscsys.h:147: Illegal preprocessor directive
Warning: petscsys.h:153: Illegal preprocessor directive
Warning: petscsys.h:154: Illegal preprocessor directive
Warning: petscsys.h:156: Illegal preprocessor directive
Warning: petscsys.h:158: Illegal preprocessor directive
Warning: petscsys.h:159: Illegal preprocessor directive
Warning: petscsys.h:160: Illegal preprocessor directive
Warning: petscsys.h:162: Illegal preprocessor directive
Warning: petscsys.h:164: Illegal preprocessor directive
Warning: petscsys.h:165: Illegal preprocessor directive
Warning: petscsys.h:168: Illegal preprocessor directive
Warning: petscsys.h:170: Illegal preprocessor directive
Warning: petscsys.h:172: Illegal preprocessor directive
Warning: petscsys.h:234: Illegal preprocessor directive
Warning: petscsys.h:235: Illegal preprocessor directive
Warning: petscsys.h:236: Illegal preprocessor directive
Warning: petscsys.h:252: Illegal preprocessor directive
Warning: petscsys.h:254: Illegal preprocessor directive
Warning: petscsys.h:256: Illegal preprocessor directive
petscsys.h:18.6:
Included at petscexe.F:2:
PetscBool PETSC_TRUE
1
Error: Unclassifiable statement at (1)
petscsys.h:19.6:
Included at petscexe.F:2:
PetscBool PETSC_FALSE
1
Error: Unclassifiable statement at (1)
petscsys.h:23.29:
Included at petscexe.F:2:
parameter (PETSC_TRUE = .true.,PETSC_FALSE = .false.)
1
Error: Can't convert LOGICAL(4) to REAL(4) at (1)
petscsys.h:25.6:
Included at petscexe.F:2:
PetscInt PETSC_DECIDE,PETSC_DETERMINE
1
Error: Unclassifiable statement at (1)
petscsys.h:28.6:
Included at petscexe.F:2:
PetscInt PETSC_DEFAULT_INTEGER
1
Error: Unclassifiable statement at (1)
petscsys.h:31.6:
Included at petscexe.F:2:
PetscFortranDouble PETSC_DEFAULT_DOUBLE_PRECISION
1
Error: Unclassifiable statement at (1)
petscsys.h:34.6:
Included at petscexe.F:2:
PetscEnum PETSC_FP_TRAP_OFF
1
Error: Unclassifiable statement at (1)
petscsys.h:35.6:
Included at petscexe.F:2:
PetscEnum PETSC_FP_TRAP_ON
1
Error: Unclassifiable statement at (1)
petscsys.h:43.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_DRAW_WORLD
1
Error: Unclassifiable statement at (1)
petscsys.h:44.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_DRAW_SELF
1
Error: Unclassifiable statement at (1)
petscsys.h:45.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_SOCKET_WORLD
1
Error: Unclassifiable statement at (1)
petscsys.h:46.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_SOCKET_SELF
1
Error: Unclassifiable statement at (1)
petscsys.h:47.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_STDOUT_WORLD
1
Error: Unclassifiable statement at (1)
petscsys.h:48.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_STDOUT_SELF
1
Error: Unclassifiable statement at (1)
petscsys.h:49.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_STDERR_WORLD
1
Error: Unclassifiable statement at (1)
petscsys.h:50.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_STDERR_SELF
1
Error: Unclassifiable statement at (1)
petscsys.h:51.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_BINARY_WORLD
1
Error: Unclassifiable statement at (1)
petscsys.h:52.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_BINARY_SELF
1
Error: Unclassifiable statement at (1)
petscsys.h:53.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_MATLAB_WORLD
1
Error: Unclassifiable statement at (1)
petscsys.h:54.6:
Included at petscexe.F:2:
PetscFortranAddr PETSC_VIEWER_MATLAB_SELF
1
Error: Unclassifiable statement at (1)
petscsys.h:75.6:
Included at petscexe.F:2:
PetscEnum PETSC_INT
1
Error: Unclassifiable statement at (1)
petscsys.h:76.6:
Included at petscexe.F:2:
PetscEnum PETSC_DOUBLE
1
Error: Unclassifiable statement at (1)
petscsys.h:77.6:
Included at petscexe.F:2:
PetscEnum PETSC_COMPLEX
1
Error: Unclassifiable statement at (1)
petscsys.h:78.6:
Included at petscexe.F:2:
PetscEnum PETSC_LONG
1
Error: Unclassifiable statement at (1)
petscsys.h:79.6:
Included at petscexe.F:2:
PetscEnum PETSC_SHORT
1
Error: Unclassifiable statement at (1)
Fatal Error: Error count reached limit of 25.
这是什么错误？非常感谢！