ImageMagick PNG委托安装问题

Ubuntu 14.04：

我已下载并安装了最新的imagemagick源，并使用以下选项进行配置：

root@usve59445:~/im/ImageMagick-6.9.3-7# ./configure --enable-shared --with-png=yes

但是，安装后，我的内置委托列表中有零个项目：

root@usve59445:~/im/ImageMagick-6.9.3-7# identify -version
Version: ImageMagick 6.9.3-7 Q16 x86_64 2016-03-14
Copyright: Copyright (C) 1999-2016 ImageMagick Studio LLC License:  
Features: Cipher DPC OpenMP
Delegates (built-in):

我收到的问题是在执行convert命令时“未找到格式PNG的委托” 。

我从以下位置安装了libpng委托：http : //www.imagemagick.org/download/delegates/

将libpng1621.tar.gz提取到其自己的文件夹中，然后：ran configure，make，make install（无错误消息）

现在，当我尝试重新编译imagemagick时，它仍然显示“正在检查PNG ...否”，并且--with-png值具有“ no”（即使我使用--with-png = yes对其进行了配置）。

不确定我在做什么错吗？

尝试使用以下方法重新编译IM：

root @ usve59445：〜/ im / ImageMagick-6.9.3-7＃./configure --enable-shared = yes --with-png = yes LDFLAGS ='-L / usr / local / lib'LIBS = -lpng16

（我认为我使用的是正确的LDFLAGS，但不确定）

root@usve59445:~/im/libpng-1.6.21# libpng16-config --L_opts
-L/usr/local/lib 

root@usve59445:~/im/libpng-1.6.21# libpng16-config --libs
-lpng16


root@usve59445:~/im/libpng-1.6.21# locate libpng
/lib/x86_64-linux-gnu/libpng12.so.0
/lib/x86_64-linux-gnu/libpng12.so.0.46.0
/usr/bin/libpng-config
/usr/bin/libpng12-config
/usr/include/libpng
/usr/include/libpng12
/usr/include/libpng12/png.h
/usr/include/libpng12/pngconf.h
/usr/lib/x86_64-linux-gnu/libpng.a
/usr/lib/x86_64-linux-gnu/libpng.so
/usr/lib/x86_64-linux-gnu/libpng.so.3
/usr/lib/x86_64-linux-gnu/libpng12.a
/usr/lib/x86_64-linux-gnu/libpng12.so
/usr/lib/x86_64-linux-gnu/libpng12.so.0
/usr/lib/x86_64-linux-gnu/pkgconfig/libpng.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/libpng12.pc
/usr/local/bin/libpng-config
/usr/local/bin/libpng16-config
/usr/local/include/libpng16
/usr/local/include/libpng16/png.h
/usr/local/include/libpng16/pngconf.h
/usr/local/include/libpng16/pnglibconf.h
/usr/local/lib/libpng.a
/usr/local/lib/libpng.la
/usr/local/lib/libpng.so
/usr/local/lib/libpng16.a
/usr/local/lib/libpng16.la
/usr/local/lib/libpng16.so
/usr/local/lib/libpng16.so.16
/usr/local/lib/libpng16.so.16.21.0
/usr/local/lib/pkgconfig/libpng.pc
/usr/local/lib/pkgconfig/libpng16.pc
/usr/local/share/man/man3/libpng.3
/usr/local/share/man/man3/libpngpf.3
/usr/share/doc/libpng12-0
/usr/share/doc/libpng12-dev
/usr/share/doc/libpng3
/usr/share/doc/libpng12-0/ANNOUNCE
/usr/share/doc/libpng12-0/KNOWNBUG
/usr/share/doc/libpng12-0/README.Debian
/usr/share/doc/libpng12-0/README.gz
/usr/share/doc/libpng12-0/TODO
/usr/share/doc/libpng12-0/changelog.Debian.gz
/usr/share/doc/libpng12-0/copyright
/usr/share/doc/libpng12-0/libpng-1.2.46.txt.gz
/usr/share/doc/libpng12-dev/changelog.Debian.gz
/usr/share/doc/libpng12-dev/copyright
/usr/share/doc/libpng12-dev/examples
/usr/share/doc/libpng12-dev/examples/example.c.gz
/usr/share/doc/libpng12-dev/examples/pngtest.c.gz
/usr/share/doc/libpng12-dev/examples/pngtest.png
/usr/share/doc-base/libpng12
/usr/share/man/man1/libpng-config.1.gz
/usr/share/man/man1/libpng12-config.1.gz
/usr/share/man/man3/libpng.3.gz
/var/cache/apt/archives/libpng12-0_1.2.46-3ubuntu4.2_amd64.deb
/var/cache/apt/archives/libpng12-dev_1.2.46-3ubuntu4.2_amd64.deb
/var/cache/apt/archives/libpng3_1.2.46-3ubuntu4.2_amd64.deb
/var/lib/dpkg/info/libpng12-0:amd64.list
/var/lib/dpkg/info/libpng12-0:amd64.md5sums
/var/lib/dpkg/info/libpng12-0:amd64.postinst
/var/lib/dpkg/info/libpng12-0:amd64.postrm
/var/lib/dpkg/info/libpng12-0:amd64.shlibs
/var/lib/dpkg/info/libpng12-dev.list
/var/lib/dpkg/info/libpng12-dev.md5sums
/var/lib/dpkg/info/libpng3:amd64.list

您为自己做的事情有点太难了，这里有一份快速而肮脏的指南，对我而言，在Trusty Tahr上运行得很好：

首先选择一些已知的依赖项：

sudo apt-get install build-essential checkinstall \
             libx11-dev libxext-dev zlib1g-dev libpng12-dev \
             libjpeg-dev libfreetype6-dev libxml2-dev

这并不能完全解决所有问题，因此请单击此处的“源代码”以激活源存储库：

Dash >> Software & Updates >> Source Code

然后运行以下命令：

sudo apt-get build-dep imagemagick

创建一个构建文件夹并更改为：

mkdir $HOME/imagemagick_build && cd $HOME/imagemagick_build

最后，只需将下面的整个代码框复制并粘贴到“终端”窗口中，即可进行下载，提取，编译和安装：

wget https://www.imagemagick.org/download/ImageMagick-7.0.8-28.tar.bz2 && \
tar xvf ImageMagick-7.0.8-28.tar.bz2 && cd ImageMagick-7.0.8-28 && ./configure && make && \
sudo checkinstall -D --install=yes --fstrans=no --pakdir "$HOME/imagemagick_build" \
     --pkgname imagemagick --backup=no --deldoc=yes --deldesc=yes --delspec=yes --default \
     --pkgversion "7.0.8-28" && \
make distclean && sudo ldconfig

最后测试一下，特别寻找您自己安装中缺少的png：

andrew@corinth:~$ identify -version
Version: ImageMagick 7.0.5-10 Q16 x86_64 2017-06-05 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2017 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC OpenMP 
Delegates (built-in): bzlib djvu fftw fontconfig freetype jbig jng jpeg lcms lqr lzma openexr pangocairo png tiff wmf x xml zlib
andrew@corinth:~$ 

还有一个您缺少的png选项:)。