Fortran error | Eastsheng's Wiki

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1. FFTW调用出错

/tmp/cc7nhiwo.o: In function `MAIN__':
xxx.f90:(.text+0x200c): undefined reference to `dfftw_plan_dft_1d_'
xxx.f90:(.text+0x202c): undefined reference to `dfftw_execute_dft_'
xxx.f90:(.text+0x203b): undefined reference to `dfftw_destroy_plan_'
xxx.f90:(.text+0x21be): undefined reference to `dfftw_plan_dft_1d_'
xxx.f90:(.text+0x21db): undefined reference to `dfftw_execute_dft_'
xxx.f90:(.text+0x21ea): undefined reference to `dfftw_destroy_plan_'

解决方法：

1	gfortran xxx.f90 -L/usr/local/fftw/lib -lfftw3

如果没有在xxx.f90中include '/usr/local/fftw/include/fftw3.f'路径，仅仅include 'fftw3.f'

则可以：

1	gfortran xxx.f90 -I/usr/local/fftw/include -L/usr/local/fftw/lib -lfftw3

参考链接：[1] https://blog.csdn.net/TedOne_LZ/article/details/89151411

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