libpng“png_set_longjmp_fn”未找到 [英] libpng "png_set_longjmp_fn" not found

问题描述

我从ubuntu使用libpng，当我尝试编译一个c ++文件时，我得到

I'm using libpng from ubuntu and when I try to compile a c++ file I get

未定义的引用`png_set_longjmp_fn'

undefined reference to `png_set_longjmp_fn'

我使用libpng版本1.6.8

I'm using libpng version 1.6.8

如果你有兴趣阅读代码，请让我知道，但我不是

If you are interested in reading the code please let me know, but I do not this has to do with my bad code.

推荐答案

也许你已经构建了libpng-1.6.8，但链接到早期版本的libpng。 png_set_longjmp_fn（）API是在libpng-1.4.x中引入的。 Ubuntu 13:10目前提供libpng-1.2.49（参见/ usr / include / libpng12），它不提供png_set_longjmp_fn（）。

Perhaps you have built with libpng-1.6.8 but are linking to an earlier version of libpng. The "png_set_longjmp_fn()" API was introduced in libpng-1.4.x. Ubuntu 13:10 currently comes with libpng-1.2.49 (see /usr/include/libpng12), which does not supply png_set_longjmp_fn().

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