GD库不支持gdImageCreateTrueColor() ?

[rorot]

linux 2.4.20 gcc 3.2 gd 2.0.15
-----------------------
#include "gd.h"
#include <cstdio>

int main()
{
gdImagePtr imTrue = gdImageCreateTrueColor(50, 50);

std::FILE *out = fopen( "line01.png", "wb" );
fclose(out);

return 0;
}
---------------------
[rorot@ccsd cgi]$ g++ line.cpp -lgd
/tmp/ccuNaLpW.o(.text+0x30): In function `main':
: undefined reference to `gdImageCreateTrueColor'
collect2: ld returned 1 exit status

why?

[xuzuning]

是ImageCreateTrueColor() 吧？

[ezdevelop]

看一下gd.h里面有没有定义这个函数吧，最近GD好象经常变的。

[ezdevelop]

gdImagePtr gdImageCreateTrueColor (int sx, int sy)
{
int i;
gdImagePtr im;
im = (gdImage *) gdMalloc(sizeof(gdImage));
memset(im, 0, sizeof(gdImage));
im->tpixels = (int **) safe_emalloc(sizeof(int *), sy, 0);
im->AA_opacity = (unsigned char **) safe_emalloc(sizeof(unsigned char *), sy, 0);
im->polyInts = 0;
im->polyAllocated = 0;
im->brush = 0;
im->tile = 0;
im->style = 0;
for (i = 0; i < sy; i++) {
im->tpixels[i] = (int *) gdCalloc(sx, sizeof(int));
im->AA_opacity[i] = (unsigned char *) gdCalloc(sx, sizeof(unsigned char));
}
im->sx = sx;
im->sy = sy;
im->transparent = (-1);
im->interlace = 0;
im->trueColor = 1;
/* 2.0.2: alpha blending is now on by default, and saving of alpha is
* off by default. This allows font antialiasing to work as expected
* on the first try in JPEGs -- quite important -- and also allows
* for smaller PNGs when saving of alpha channel is not really
* desired, which it usually isn't!
*/
im->saveAlphaFlag = 0;
im->alphaBlendingFlag = 1;
im->thick = 1;
im->AA = 0;
im->AA_polygon = 0;
im->cx1 = 0;
im->cy1 = 0;
im->cx2 = im->sx - 1;
im->cy2 = im->sy - 1;
return im;
}

[rorot]

gd.h里面定义了gdImageCreateTrueColor()函数了...

[diekiss]

用 gd2.dll，支持此函数

[rorot]

linux环境下得，那儿有.dll啊？