TYPO3 Core

typo3 4.0.2 keeps looking for gm, which doesn't exist on the server, so instead of a nice php page, I get an error about a missing gm binary before the http header is sent.

The culprit seems to be:
./typo3/sysext/install/mod/class.tx_install.php
line 1792:
if (ini_get('open_basedir') || (@file_exists($v)&&@is_file($v.$filename.$isExt))) {

it then goes on to open the non-existant binary:
$version = $this->_checkImageMagick_getVersion($filename,$v);

Might be useful (from localconf.php):

$TYPO3_CONF_VARS['GFX']['gdlib'] = '0';
$TYPO3_CONF_VARS["GFX"]["gdlib_png"] = '0';Tool.
$TYPO3_CONF_VARS["GFX"]["gdlib_2"] = '0';
$TYPO3_CONF_VARS["GFX"]["im"] = '1';
(issue imported from #M4475)