Just noticed this comment by kenbarnettpt on http://drupal.org/node/151584:

I'm running Drupal v6.13 on PHP v5.2.9 and MySQL v5.0.84 (Apache v2.2.1.11 on Unix) with the CAPTCHA module v6.x-2.0-rc3. I built PHP from source with "--with-gd" and have the libpng and libjpeg libraries installed. When I run the Drupal Status report, under the GD LIBRARY item it shows a green check mark and indicates "bundled (2.0.34 compatible)". However, when I go to Administer/User Management/CAPTCHA/Image CAPTCHA, I receive the message "The Image CAPTCHA module can not generate images because your PHP setup does not support it (no GD Library)." Any ideas? Thanks!

Ken

Comments

soxofaan’s picture

soxofaan commented
Status: Active » Postponed (maintainer needs more info)

The check for the GD library is in image_captcha.module around line 111:

function _image_captcha_check_setup() {
  // Check GD library and is TTF support.
  if (!function_exists('imagejpeg')) {
    return IMAGE_CAPTCHA_ERROR_NO_GDLIB;
  }
...

Can you check if this function "imagejpeg" exists on your setup?
And does "imagepng" exists?

kenbarnettpt’s picture

kenbarnettpt commented

My bad. I had compiled PHP without explicit JPEG or FreeType support (I did have PNG support and native GD TTF support.) Once I recompiled PHP with --with-jpeg-dir=... --with-freetype-dir=..., all was golden. Might be worth updating the documentation to show these requirements? Thanks for the assist!

Ken

soxofaan’s picture

soxofaan commented
Status: Postponed (maintainer needs more info) » Fixed

I updated the error message to make it more clear that both GD and JPEG support are required:
http://drupal.org/cvs?commit=264224

Status: Fixed » Closed (fixed)

Automatically closed -- issue fixed for 2 weeks with no activity.