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centos6.6 32位系统在安装Image_Canvas时总是装不上，具体问题如下
# pear install Image_Canvas-0.3.5
WARNING: "pear/Image_Color" is deprecated in favor of "pear/Image_Color2"
pear/Image_Canvas requires PHP extension "gd"
pear/Image_Color requires PHP extension "gd"
No valid packages found
install failed


当前环境，PHP 5.5.22已经支持gd，但就是会报错，期待论坛里有解决过此类问题的技术牛人能解答一下该如何解决，谢谢。

D Supportenabled

GD Versionbundled (2.1.0 compatible)

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