Ошибка компиляции из-за несовместимого указателя типа

Question

Я пытаюсь скомпилировать эту программу на C, но она ломается с некоторыми ошибками компиляции несовместимого указателя и структуры. Ниже приведены ошибки компиляции. Я не могу понять, как это решить. Любая помощь будет оценена по достоинству.

build/user/junyan/fft3d_JYAN.c: In function 'fft2d_init': 
build/user/junyan/fft3d_JYAN.c:45: warning: assignment from incompatible pointer type 
build/user/junyan/fft3d_JYAN.c:46: warning: assignment from incompatible pointer type 
build/user/junyan/fft3d_JYAN.c: In function 'fft2d_JYAN': 
build/user/junyan/fft3d_JYAN.c:73: error: invalid use of undefined type 'struct kiss_fft_cpx' 
build/user/junyan/fft3d_JYAN.c:73: error: dereferencing pointer to incomplete type 
build/user/junyan/fft3d_JYAN.c:78: error: invalid use of undefined type 'struct kiss_fft_cpx' 
build/user/junyan/fft3d_JYAN.c:78: error: dereferencing pointer to incomplete type 
build/user/junyan/fft3d_JYAN.c:94: warning: passing argument 3 of 'kiss_fft_stride' from incompatible pointer type 
build/include/rsf.h:152: note: expected 'struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx *' 
build/user/junyan/fft3d_JYAN.c:95: error: invalid use of undefined type 'struct kiss_fft_cpx' 
build/user/junyan/fft3d_JYAN.c:95: error: dereferencing pointer to incomplete type 
build/user/junyan/fft3d_JYAN.c:103: warning: passing argument 3 of 'kiss_fft_stride' from incompatible pointer type 
build/include/rsf.h:152: note: expected 'struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx *' 
build/user/junyan/fft3d_JYAN.c:104: error: invalid use of undefined type 'struct kiss_fft_cpx' 
build/user/junyan/fft3d_JYAN.c:104: error: dereferencing pointer to incomplete type 
build/user/junyan/fft3d_JYAN.c: In function 'fft3d_init': 
build/user/junyan/fft3d_JYAN.c:123: warning: assignment from incompatible pointer type 
build/user/junyan/fft3d_JYAN.c:124: warning: assignment from incompatible pointer type 
build/user/junyan/fft3d_JYAN.c:125: warning: assignment from incompatible pointer type 
build/user/junyan/fft3d_JYAN.c: In function 'fft3d_JYAN': 
build/user/junyan/fft3d_JYAN.c:155: error: invalid use of undefined type 'struct kiss_fft_cpx' 
build/user/junyan/fft3d_JYAN.c:155: error: dereferencing pointer to incomplete type 
build/user/junyan/fft3d_JYAN.c:160: error: invalid use of undefined type 'struct kiss_fft_cpx' 
build/user/junyan/fft3d_JYAN.c:160: error: dereferencing pointer to incomplete type 
build/user/junyan/fft3d_JYAN.c:165: error: incompatible type for argument 1 of 'sf_crealf' 
build/include/rsf.h:1542: note: expected 'kiss_fft_cpx' but argument is of type 'struct kiss_fft_cpx *' 
build/user/junyan/fft3d_JYAN.c:166: error: invalid operands to binary/(have 'float *' and 'int') 
build/user/junyan/fft3d_JYAN.c:177: warning: passing argument 3 of 'kiss_fft_stride' from incompatible pointer type 
build/include/rsf.h:152: note: expected 'struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx *' 
build/user/junyan/fft3d_JYAN.c:178: error: invalid use of undefined type 'struct kiss_fft_cpx' 
build/user/junyan/fft3d_JYAN.c:178: error: dereferencing pointer to incomplete type 
build/user/junyan/fft3d_JYAN.c:184: error: incompatible type for argument 1 of 'sf_cneg' 
build/include/rsf.h:1578: note: expected 'kiss_fft_cpx' but argument is of type 'struct kiss_fft_cpx *' 
build/user/junyan/fft3d_JYAN.c:186: warning: passing argument 2 of 'kiss_fft_stride' from incompatible pointer type 
build/include/rsf.h:152: note: expected 'const struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx **' 
build/user/junyan/fft3d_JYAN.c:186: warning: passing argument 3 of 'kiss_fft_stride' from incompatible pointer type 
build/include/rsf.h:152: note: expected 'struct kiss_fft_cpx *' but argument is of type 'struct kiss_fft_cpx *' 
build/user/junyan/fft3d_JYAN.c:187: error: invalid use of undefined type 'struct kiss_fft_cpx' 
build/user/junyan/fft3d_JYAN.c:187: error: dereferencing pointer to incomplete type 
build/user/junyan/fft3d_JYAN.c:190: error: expected declaration or statement at end of input 
build/user/junyan/fft3d_JYAN.c:148: warning: unused variable 'iky' 
scons: *** [build/user/junyan/fft3d_JYAN.o] Error 1 
scons: building terminated because of errors. 
make: *** [all] Error 2 

Программа C

/* 3-D Fourier transform */ 
/* 
    Copyright (C) 2010 University of Texas at Austin 

    This program is free software; you can redistribute it and/or modify 
    it under the terms of the GNU General Public License as published by 
    the Free Software Foundation; either version 2 of the License, or 
    (at your option) any later version. 

    This program is distributed in the hope that it will be useful, 
    but WITHOUT ANY WARRANTY; without even the implied warranty of 
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
    GNU General Public License for more details. 

    You should have received a copy of the GNU General Public License 
    along with this program; if not, write to the Free Software 
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
*/ 
#include <rsf.h> 

static int nkx,nky,nkz; 
static kiss_fft_cfg cfgx,cfgxi,cfgy,cfgyi,cfgz,cfgzi; 
static kiss_fft_cpx *ctracex,*ctracey,*ctracez; 

int fft_nk(int n, int opt) 
/*< wavenumber for FT >*/ 
{ 
    int nk; 

    nk = opt? kiss_fft_next_fast_size(n): n; 
    return nk; 
} 

void fft2d_init(int nz, int nx, int opt) 
/*< 2D fft init >*/ 
{ 
    nkx = opt? kiss_fft_next_fast_size(nx): nx; 
    nkz = opt? kiss_fft_next_fast_size(nz): nz; 

    cfgx = kiss_fft_alloc(nkx,0,NULL,NULL); 
    cfgxi = kiss_fft_alloc(nkx,1,NULL,NULL); 
    cfgz = kiss_fft_alloc(nkz,0,NULL,NULL); 
    cfgzi = kiss_fft_alloc(nkz,1,NULL,NULL); 

    ctracex = (kiss_fft_cpx *) sf_complexalloc(nkx); 
    ctracez = (kiss_fft_cpx *) sf_complexalloc(nkz); 
} 

void fft2d_close() 
/*< 2D fft close >*/ 
{ 
    free(ctracex); 
    free(ctracez); 
    free(cfgx); 
    free(cfgxi); 
    free(cfgz); 
    free(cfgzi); 
} 

void fft2d_JYAN(bool inv,  /* forward or inverse */ 
     int nz, int nx, /* dimensions */ 
     kiss_fft_cpx **data, /* data [nkx][nkz] */ 
     float **datrl /* if inv==1 * datrl[nx][nz] */) 
/*< 2-D transform >*/ 
{ 
    int ix, iz, ikx, ikz; 

    if (inv) { 
     /* Inverse FFT*/ 
     for (ikz=0; ikz < nkz; ikz++){ 
     /* Inverse Fourier transform kx to x */ 
      kiss_fft_stride(cfgxi,(kiss_fft_cpx *)data[0]+ikz,(kiss_fft_cpx *)ctracex,nkz); 
      for (ikx=0; ikx < nkx; ikx++) data[ikx][ikz] = sf_crmul(ctracex[ikx],ikx%2?-1.0:1.0); 
     } 
     for (ikx=0; ikx < nkx; ikx++){ 
     /* Inverse Fourier transform kz to z */ 
      kiss_fft_stride(cfgzi,(kiss_fft_cpx *)data[ikx],(kiss_fft_cpx *)ctracez,1); 
      for (ikz=0; ikz < nkz; ikz++) data[ikx][ikz] = sf_crmul(ctracez[ikz],ikz%2?-1.0:1.0); 
     } 

     for (ix=0; ix < nx; ix++){ 
      for (iz=0; iz < nz; iz++){ 
       datrl[ix][iz] = sf_crealf(data[ix][iz]); 
       datrl[ix][iz] /= (nkx*nkz); 
      } 
     } 
    } else { 
    /* compute u(kx,kz) */ 
     for (ix=0; ix < nx; ix++){ 
      /* Fourier transform z to kz */ 
      for (iz=1; iz < nz; iz+=2){ 
       data[ix][iz] = sf_cneg(data[ix][iz]); 
      } 
      kiss_fft_stride(cfgz,data[ix],ctracez,1); 
      for (ikz=0; ikz<nkz; ikz++) data[ix][ikz] = ctracez[ikz]; 
     } 

     for (ikz=0; ikz < nkz; ikz++){ 
      /* Fourier transform x to kx */ 
      for (ikx=1; ikx<nkx; ikx+=2){ 
       data[ikx][ikz] = sf_cneg(data[ikx][ikz]); 
      } 
      kiss_fft_stride(cfgx,data[0]+ikz,ctracex,nkz); 
      for (ikx=0; ikx<nkx; ikx++) data[ikx][ikz] = ctracex[ikx]; 
      } 
    } 
} 

void fft3d_init(int nz, int nx, int ny, int opt) 
/*< 3D fft init >*/ 
{ 
    nkx = opt? kiss_fft_next_fast_size(nx): nx; 
    nky = opt? kiss_fft_next_fast_size(ny): ny; 
    nkz = opt? kiss_fft_next_fast_size(nz): nz; 

    cfgx = kiss_fft_alloc(nkx,0,NULL,NULL); 
    cfgxi = kiss_fft_alloc(nkx,1,NULL,NULL); 
    cfgy = kiss_fft_alloc(nky,0,NULL,NULL); 
    cfgyi = kiss_fft_alloc(nky,1,NULL,NULL); 
    cfgz = kiss_fft_alloc(nkz,0,NULL,NULL); 
    cfgzi = kiss_fft_alloc(nkz,1,NULL,NULL); 

    ctracex = (kiss_fft_cpx *) sf_complexalloc(nkx); 
    ctracey = (kiss_fft_cpx *) sf_complexalloc(nky); 
    ctracez = (kiss_fft_cpx *) sf_complexalloc(nkz); 
} 

void fft3d_close() 
/*< 3D fft close >*/ 
{ 
    free(ctracex); 
    free(ctracey); 
    free(ctracez); 
    free(cfgx); 
    free(cfgxi); 
    free(cfgy); 
    free(cfgyi); 
    free(cfgz); 
    free(cfgzi); 
} 

void fft3d_JYAN(bool inv,  /* forward or inverse */ 
     int nz, int nx, int ny, /* dimensions */ 
     kiss_fft_cpx ***data, /* data [nky][nkx][nkz] */ 
     float ***datrl /* if inv==1 * datrl[ny][nx][nz] */) 
/*< 3-D transform >*/ 
{ 
    int ix, iy, iz, ikx, iky, ikz; 

    if (inv) { 
     /* Inverse FFT*/ 
     for (ikz=0; ikz < nkz; ikz++){ 
     /* Inverse Fourier transform kx to x */ 
      kiss_fft_stride(cfgxi,(kiss_fft_cpx *)data[0]+ikz,(kiss_fft_cpx *)ctracex,nkz); 
      for (ikx=0; ikx < nkx; ikx++) data[ikx][ikz] = sf_crmul(ctracex[ikx],ikx%2?-1.0:1.0); 
     } 
     for (ikx=0; ikx < nkx; ikx++){ 
     /* Inverse Fourier transform kz to z */ 
      kiss_fft_stride(cfgzi,(kiss_fft_cpx *)data[ikx],(kiss_fft_cpx *)ctracez,1); 
      for (ikz=0; ikz < nkz; ikz++) data[ikx][ikz] = sf_crmul(ctracez[ikz],ikz%2?-1.0:1.0); 
     } 

     for (ix=0; ix < nx; ix++){ 
      for (iz=0; iz < nz; iz++){ 
       datrl[ix][iz] = sf_crealf(data[ix][iz]); 
       datrl[ix][iz] /= (nkx*nkz); 
      } 
     } 
    } else { 
    /* compute u(kx,kz) */ 
     for (iy=0; iy < ny; iy++) { 
     for (ix=0; ix < nx; ix++) { 
      /* Fourier transform z to kz */ 
      for (iz=1; iz < nz; iz+=2){ 
       data[iy][ix][iz] = sf_cneg(data[iy][ix][iz]); 
      } 
      kiss_fft_stride(cfgz,data[iy][ix],ctracez,1); 
      for (ikz=0; ikz<nkz; ikz++) data[iy][ix][ikz] = ctracez[ikz]; 
     } 

     for (ikz=0; ikz < nkz; ikz++){ 
      /* Fourier transform x to kx */ 
      for (ikx=1; ikx<nkx; ikx+=2){ 
       data[ikx][ikz] = sf_cneg(data[ikx][ikz]); 
      } 
      kiss_fft_stride(cfgx,data[0]+ikz,ctracex,nkz); 
      for (ikx=0; ikx<nkx; ikx++) data[ikx][ikz] = ctracex[ikx]; 
      } 
    } 
} 

Answer 1

Очевидно, что файл rsf.h вызывает эти заявления должны быть обработаны:

struct kiss_fft_cpx; 
typedef struct kiss_fft_cpx kiss_fft_cpx; 

но не объявляет членов struct kiss_fft_cpx. Возможно, заголовок неисправен, но если он поставляется с проверенным сторонним кодом, то, скорее всего, ожидается, что вы представите свое собственное объявление членов struct. Такое заявление было бы специфично для конкретного приложения (еще нет никаких оснований делать это так), но это может быть что-то вроде этого:

struct kiss_fft_cpx { 
    double real; 
    double imag; 
}; 

Если это то, что нужно, то документация должна описывать требование для этого, а также ожидания для формы struct. Такое объявление лучше всего следует сразу после включения заголовка (ов). Если вам это нужно в более чем одном файле, вы должны поместить его в свой собственный закрытый заголовок.