emacs 配置 plantuml 需要安装 graphviz

brew install graphviz

bogon:~ lpc$ brew install graphviz
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/core).
==> New Formulae
apache-arrow                             kubectx
==> Updated Formulae
allure                     ecl                        osquery
angular-cli                giter8                     paket
armor                      gofabric8                  phoronix-test-suite
artifactory                gor                        pick
aurora-cli                 groovy                     plantuml
aws-sdk-cpp                influxdb@0.8               qt
awscli                     ipbt                       rkhunter
bash-completion@2          kubernetes-cli             rocksdb
bind                       libgcrypt                  saldl
c-ares                     libtensorflow              streamlink
capnp                      libupnp                    swiftformat
consul-template            llvm                       terraform
convox                     logrotate                  texmath
cromwell                   mongodb                    tippecanoe
crystal-lang               nano                       tor
dbus                       node                       vifm
diffoscope                 node-build                 wireguard-tools
direnv                     nodeenv

==> Installing dependencies for graphviz: libtool, libpng, freetype, fontconfig, jpeg, libtiff, webp, gd
==> Installing graphviz dependency: libtool
==> Downloading https://homebrew.bintray.com/bottles/libtool-2.4.6_1.sierra.bott
######################################################################## 100.0%
==> Pouring libtool-2.4.6_1.sierra.bottle.tar.gz
==> Using the sandbox
==> Caveats
In order to prevent conflicts with Apple's own libtool we have prepended a "g"
so, you have instead: glibtool and glibtoolize.
==> Summary
🍺  /usr/local/Cellar/libtool/2.4.6_1: 70 files, 3.7MB
==> Installing graphviz dependency: libpng
==> Downloading https://homebrew.bintray.com/bottles/libpng-1.6.29.sierra.bottle
######################################################################## 100.0%
==> Pouring libpng-1.6.29.sierra.bottle.tar.gz
🍺  /usr/local/Cellar/libpng/1.6.29: 26 files, 1.2MB
==> Installing graphviz dependency: freetype
==> Downloading https://homebrew.bintray.com/bottles/freetype-2.8.sierra.bottle.
######################################################################## 100.0%
==> Pouring freetype-2.8.sierra.bottle.tar.gz
🍺  /usr/local/Cellar/freetype/2.8: 63 files, 2.6MB
==> Installing graphviz dependency: fontconfig
==> Downloading https://homebrew.bintray.com/bottles/fontconfig-2.12.3.sierra.bo
######################################################################## 100.0%
==> Pouring fontconfig-2.12.3.sierra.bottle.1.tar.gz
==> Regenerating font cache, this may take a while
==> /usr/local/Cellar/fontconfig/2.12.3/bin/fc-cache -frv
🍺  /usr/local/Cellar/fontconfig/2.12.3: 487 files, 3.1MB
==> Installing graphviz dependency: jpeg
==> Downloading https://homebrew.bintray.com/bottles/jpeg-8d.sierra.bottle.2.tar
######################################################################## 100.0%
==> Pouring jpeg-8d.sierra.bottle.2.tar.gz
🍺  /usr/local/Cellar/jpeg/8d: 19 files, 708.3KB
==> Installing graphviz dependency: libtiff
==> Downloading https://homebrew.bintray.com/bottles/libtiff-4.0.8.sierra.bottle
######################################################################## 100.0%
==> Pouring libtiff-4.0.8.sierra.bottle.tar.gz
🍺  /usr/local/Cellar/libtiff/4.0.8: 245 files, 3.4MB
==> Installing graphviz dependency: webp
==> Downloading https://homebrew.bintray.com/bottles/webp-0.6.0.sierra.bottle.ta
######################################################################## 100.0%
==> Pouring webp-0.6.0.sierra.bottle.tar.gz
🍺  /usr/local/Cellar/webp/0.6.0: 36 files, 2.0MB
==> Installing graphviz dependency: gd
==> Downloading https://homebrew.bintray.com/bottles/gd-2.2.4_1.sierra.bottle.ta
######################################################################## 100.0%
==> Pouring gd-2.2.4_1.sierra.bottle.tar.gz
🍺  /usr/local/Cellar/gd/2.2.4_1: 34 files, 1MB
==> Installing graphviz
==> Downloading https://homebrew.bintray.com/bottles/graphviz-2.40.1.sierra.bott
######################################################################## 100.0%
==> Pouring graphviz-2.40.1.sierra.bottle.1.tar.gz
🍺  /usr/local/Cellar/graphviz/2.40.1: 536 files, 12.9MB
bogon:~ lpc$ 

网友发现一个问题

执行 brew install graphviz，出现错误

Error:You must brew link libpng before graphviz can be installed

跟着上面错误提示，做如下操作

macbook-stonedeMacBook-Pro:design stone$ brew link libpng
Linking /usr/local/Cellar/libpng/1.6.21...
Error: Could not symlink share/man/man5/png.5
/usr/local/share/man/man5 is not writable.

出现上述问是由于目录/usr/local/share/man/man5没有写权限,
只要为其添加写权限就ok了, 解决方法如下:
chmod -R +w /usr/local/share/man/man5
(这是个目录, 所以需要迭代为它里面的文件添加权限, 因此需要-R选项)
或者为了防止还需要其他权限又发生错误, 直接添加读/写/执行的权限:
chmod -R 777 /usr/local/share/man/man5

添加权限后, 再先后执行命令brew link libpng和brew install graphviz就会成功了.

相关链接

• 简书网友：在mac上安装graphviz时遇到的问题 http://www.jianshu.com/p/b603c4dc3ca9
• emacs官网:http://www.gnuemacs.org
• emacs plantuml 插件:https://github.com/skuro/plantuml-mode
• plantuml官网:http://plantuml.com
• graphviz官网:http://www.graphviz.org