lasvegastheking | Bonsoir,
pour tester l'installation de GD chez nous, un prof nous a fourni un code de test.
J'ai installé toutes les bibliothèques mais j'obtiens cette erreur :
Code :
- g++ -lgd -lpng -lz -ljpeg -lfreetype -lm gd.cc
- /tmp/ccqjEmrL.o: dans la fonction « main »:
- gd.cc:(.text+0xc5): référence indéfinie vers « gdImageJpeg »
- collect2: ld a retourné 1 code d'état d'exécution
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Je ne comprends pas pourquoi gdImageJpeg n'est pas reconnue
Voici le code :
Code :
- /* Bring in gd library functions */
- extern "C" {
- #include <gd.h>
- }
- /* Bring in standard I/O so we can output the PNG to a file */
- #include <stdio.h>
- int main() {
- /* Declare the image */
- gdImagePtr im;
- /* Declare output files */
- FILE *pngout, *jpegout;
- /* Declare color indexes */
- int black;
- int white;
- /* Allocate the image: 64 pixels across by 64 pixels tall */
- im = gdImageCreate(64, 64);
- /* Allocate the color black (red, green and blue all minimum).
- Since this is the first color in a new image, it will
- be the background color. */
- black = gdImageColorAllocate(im, 0, 0, 0);
- /* Allocate the color white (red, green and blue all maximum). */
- white = gdImageColorAllocate(im, 255, 255, 255);
-
- /* Draw a line from the upper left to the lower right,
- using white color index. */
- gdImageLine(im, 0, 0, 63, 63, white);
- /* Open a file for writing. "wb" means "write binary", important
- under MSDOS, harmless under Unix. */
- pngout = fopen("test.png", "wb" );
- /* Do the same for a JPEG-format file. */
- jpegout = fopen("test.jpg", "wb" );
- /* Output the image to the disk file in PNG format. */
- gdImagePng(im, pngout);
- /* Output the same image in JPEG format, using the default
- JPEG quality setting. */
- gdImageJpeg(im, jpegout, -1);
- /* Close the files. */
- fclose(pngout);
- fclose(jpegout);
- /* Destroy the image in memory. */
- gdImageDestroy(im);
- }
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