我知道这个问题已经有几个答案了（比如这个：ImageMagick convert SVG to PNG not working with RSVG enabled），但实际上我找不到真正解决我的问题的方法。我的问题是：我有一个特定的SVG文件（而且我将生成更多），在SVG > PNG转换过程中，ImageMagick内部的转换器处理时并不能完美地进行转换。因此，我需要改用 librsvg，因为它可以做到这一点。我使用了以下两行代码进行测试，并获得了不同的结果：
convert test.svg test.png // ( img: http://tinyurl.com/px2lw3v )
rsvg-convert test.svg -o test.png // ( img: http://tinyurl.com/lreu6sk )
我安装了HomeBrew。按照这里的说明，我使用以下代码安装了ImageMagick：brew install imagemagick --use-rsvg。我发现它没有安装librsvg，所以我需要像这样先卸载再重新安装：brew reinstall imagemagick --with-libsrvg librsvg --use-rsvg：这将imagemagick和librsvg一起安装到我的Mac上。但是它们没有连接起来：convert -list format | grep SVG的结果如下：
MSVG SVG rw+ ImageMagick's own SVG internal renderer
SVG SVG rw+ Scalable Vector Graphics (XML 2.9.0)
SVGZ SVG rw+ Compressed Scalable Vector Graphics (XML 2.9.0)
在这种情况下：convert -list delegate | grep svg 的结果是：
svg => "rsvg-convert" -o "%o" "%i"
我已经多次安装、卸载和重新安装它们，但仍然没有改变，脚本
convert test.svg test.png在没有librsvg的情况下完成。我在/usr/local/Cellar/imagemagick/6.8.9-1/lib/ImageMagick/config-Q16/configure.xml中添加了标签行，但没有进展。我不知道该怎么做，也不知道如何连接ImageMagick并强制使用不同的库来执行convert test.svg test.png。谢谢您的帮助。
更多信息：
$ which convert
/usr/local/bin/convert
$ convert -version
Version: ImageMagick 6.8.9-1 Q16 x86_64 2014-05-12 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC
Features: DPC Modules
Delegates: bzlib freetype jng jpeg ltdl lzma png xml zlib
$ otool -L $(which convert)
/usr/local/bin/convert:
/usr/local/Cellar/imagemagick/6.8.9-1/lib/libMagickCore-6.Q16.2.dylib (compatibility version 3.0.0, current version 3.0.0)
/usr/local/Cellar/imagemagick/6.8.9-1/lib/libMagickWand-6.Q16.2.dylib (compatibility version 3.0.0, current version 3.0.0)
/usr/local/lib/libfreetype.6.dylib (compatibility version 18.0.0, current version 18.2.0)
/usr/lib/liblzma.5.dylib (compatibility version 6.0.0, current version 6.3.0)
/usr/lib/libbz2.1.0.dylib (compatibility version 1.0.0, current version 1.0.5)
/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.5)
/usr/local/lib/libltdl.7.dylib (compatibility version 11.0.0, current version 11.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1197.1.1)
$ which rsvg-convert
/usr/local/bin/rsvg-convert
$ otool -L $(which rsvg-convert)
/usr/local/bin/rsvg-convert:
/usr/local/Cellar/librsvg/2.36.3/lib/librsvg-2.2.dylib (compatibility version 39.0.0, current version 39.3.0)
/usr/local/lib/libgdk_pixbuf-2.0.0.dylib (compatibility version 3001.0.0, current version 3001.8.0)
/usr/local/lib/libgio-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
/usr/local/lib/libpangocairo-1.0.0.dylib (compatibility version 3601.0.0, current version 3601.5.0)
/usr/local/lib/libpango-1.0.0.dylib (compatibility version 3601.0.0, current version 3601.5.0)
/usr/local/lib/libgobject-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
/usr/local/lib/libcairo.2.dylib (compatibility version 11203.0.0, current version 11203.16.0)
/usr/local/lib/libpng16.16.dylib (compatibility version 29.0.0, current version 29.0.0)
/usr/local/lib/libcroco-0.6.3.dylib (compatibility version 4.0.0, current version 4.1.0)
/usr/lib/libxml2.2.dylib (compatibility version 10.0.0, current version 10.9.0)
/usr/local/lib/libgthread-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
/usr/local/lib/libglib-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
/usr/local/opt/gettext/lib/libintl.8.dylib (compatibility version 10.0.0, current version 10.2.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1197.1.1)
- ImageMagick 6.6.9-1
- Mac OS X 10.9.4