I recently started working with gd and I used the precompiled binaries of the 0.34 version. I noticed that I can get the SX sizes of images with GD, but somehow the SY (gdImageSY) function is always 0. The imagePtr→sx is always a value while sy is always empty. Can anyone tell me what I am doing wrong?

Jan

and then when libpng 1.6 will be released in a future, it will break again.

it would be best to switch to using pkg-config to check for libpng presence now, to fix the issues now and for the future.

consider this,

Install libpng-1.2.43, have libpng12-config (this is installed for backward’s compability for certain non-libgd related issues) install libpng-1.4.2, have libpng14-config, and libpng-config –libs that will return -lpng14

then ./configure, and it will find libpng12-config and prefer it over the newer libpng14-config and libpng-config.

you end up with libgd linked against old libpng, or not linked to libpng at all.

i’d guess using libpng.pc (the generic pkg-config file name) would be the best here.

Maggie gd version: Installed Packages: gd-devel.x86_64 2.0.33-9.4.el5_4.2 installed Available Packages: gd-devel.i386 2.0.33-9.4.el5_4.2 updates

valgrind memory check result: [root@tilesgen-dev gd_maps_mlin]# valgrind -q -v –tool=memcheck –leak-check=full –show-below-main=yes –num-callers=40 ./fimage fuseimage1.def city_ir.txt -ir noaaport_satir/201005101210 ==12871== Memcheck, a memory error detector. ==12871== Copyright (C) 2002-2006, and GNU GPL‘d, by Julian Seward et al. ==12871== Using LibVEX rev 1658, a library for dynamic binary translation. ==12871== Copyright (C) 2004-2006, and GNU GPL‘d, by OpenWorks LLP. ==12871== Using valgrind-3.2.1, a dynamic binary instrumentation framework. ==12871== Copyright (C) 2000-2006, and GNU GPL‘d, by Julian Seward et al. ==12871== For more details, rerun with: -v

12871

12871

12871

I’ve seen this in both 2.0.35 and also 2.0.36RC1. Not that it should matter, but the same thing is happening in my C program.

I’m installing webalizer in my home directory. It requires libgd and libgd requires libpng, none of which are installed.

I successfully installed libpng using “./configure –prefix=$HOME”, and I’m installing libgd using “./configure –prefix=$HOME –with-png=$HOME”. The configure script reports it found libpng, but the compile fails:

gcc -DHAVE_CONFIG_H -I. -I. -I. -g -O2 -MT gd_png.lo -MD -MP -MF .deps/gd_png.Tpo -c gd_png.c -fPIC -DPIC -o .libs/gd_png.o gd_png.c:16:53: error: png.h: No such file or directory (followed by tons of errors)

I found another libpng compile error in the bug database, but that problem wasn’t even finding libpng.

Thanks!

#include <stdio.h>
#include <stdlib.h>
#include "gd.h"

int main (int argc, char** argv)
{
	char* font = "/usr/share/fonts/truetype/msttcorefonts/arial.ttf";

	gdImagePtr img = gdImageCreate(500, 50);
	int white = gdImageColorAllocate(img, 255, 255 ,255);
	int black = gdImageColorAllocate(img, 0, 0, 0);
	int brect[8];

	gdImageStringFT(img, brect, black, font, 8, 0, 10, 20, "al ol el farmor 
hamtar skolan");

	FILE* out = fopen("test.png", "w");
	gdImagePng(img, out);
	fclose(out);
	return 0;
}

Produces the following png:

Can u please have a look at this ?

Thanks