原文： http://www.alpface.com/article/2018/4/15/51.html

github: https://github.com/admxjx/webP-Demo

可能会遇到libwebp v0.6.0 超时问题:

[!] Error installing libwebp
[!] /usr/bin/git clone https://chromium.googlesource.com/webm/libwebp /var/folders/p6/t42f8nmd7332018zm9m2s3d80000gn/T/d20180415-42656-1hjxh43 --template= --single-branch --depth 1 --branch v0.6.0

Cloning into '/var/folders/p6/t42f8nmd7332018zm9m2s3d80000gn/T/d20180415-42656-1hjxh43'...
fatal: unable to access 'https://chromium.googlesource.com/webm/libwebp/': Failed to connect to chromium.googlesource.com port 443: Operation timed out

解决方法: 尝试过翻墙，修改host，均无效 最终，修改pod repo中libwebp的git source 地址，再执行pod install 解决， 但是我们需要有一个有效的libwebp的git仓库，在github上找到了一个https://github.com/webmproject/libwebp.git，可以看到mirrored from https://chromium.googlesource.com/webm/libwebp，而且正好有我需要的版本0.6.0, 那么我就替换为这个。

下面是步骤:

1. 查看mac中cocoapods 本地库路径:

执行： pod repo

找到master的Path

image.png

在本地库中, 并找到对应的libwebp版本的文件

find [path] -iname libwebp

image.png

进入libwebp目录，可以看到你的仓库中有哪些对应的版本

swaedeMacBook-Pro:libwebp swae$ cd /Users/swae/.cocoapods/repos/master/Specs/1/9/2/libwebp
swaedeMacBook-Pro:libwebp swae$ ls -l
total 0
drwxr-xr-x  3 swae  staff  96 12  3 21:50 0.4.1
drwxr-xr-x  3 swae  staff  96 12  3 21:50 0.4.2
drwxr-xr-x  3 swae  staff  96 12  3 21:50 0.4.3
drwxr-xr-x  3 swae  staff  96 12  3 21:50 0.4.4
drwxr-xr-x  3 swae  staff  96 12  3 21:50 0.5.0
drwxr-xr-x  3 swae  staff  96 12  3 21:50 0.5.1
drwxr-xr-x  3 swae  staff  96 12  3 21:50 0.5.2
drwxr-xr-x  3 swae  staff  96 12  3 21:50 0.6.0
```

由于SDWebImage 依赖的 libwebp版本为0.6.0，所以我们进入0.6.0中，并做修改

```
swaedeMacBook-Pro:libwebp swae$ cd 0.6.0/
swaedeMacBook-Pro:0.6.0 swae$ ls -l
total 8
-rw-r--r--@ 1 swae  staff  1587  4 15 09:53 libwebp.podspec.json
```

在0.6.0目录下的libwebp.podspec.json文件中修改git source

```
swaedeMacBook-Pro:0.6.0 swae$ sudo vim libwebp.podspec.json
```

找到

```
"source": {
"git": "https://chromium.googlesource.com/webm/libwebp",
"tag": "v0.6.0"
},
```

将其中的`"git"` 对应的url替换为`https://github.com/webmproject/libwebp.git`,并保存 最后再执行`pod install`, 完成

```
swaedeMacBook-Pro:alpface swae$ pod install
/Users/swae/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/cocoapods-1.4.0/lib/cocoapods/executable.rb:89: warning: Insecure world writable dir /opt in PATH, mode 040777
Analyzing dependencies
Downloading dependencies
Installing SDWebImage (4.3.3)
Installing libwebp (0.6.0)
Generating Pods project
Integrating client project
Sending stats
Pod installation complete! There are 8 dependencies from the Podfile and 9 total pods installed.
```