因一个 Go 项目依赖了 go-sqlite3 包，导致在 Windows10 Ubuntu 子系统下编译 Go 项目时报错。
编译错误信息如下：
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| # github.com/mattn/go-sqlite3
cgo: C compiler "gcc-5" not found: exec: "gcc-5": executable file not found in $PATH
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在 Ubuntu 下尝试使用 brew 安装 gcc-5 但没有对应的版本，也许是 gcc@5 ：
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brew install gcc-5
Running `brew update --preinstall`...
Warning: No available formula with the name "gcc-5". Did you mean gcc@5, gcc, gcc@9, gcc@8, gcc@7 or gcc@6?
==> Searching for similarly named formulae...
These similarly named formulae were found:
gcc@5 gcc ✔
gcc@9 gcc@8
gcc@7 gcc@6
To install one of them, run (for example):
brew install gcc@5
==> Searching for a previously deleted formula (in the last month)...
Error: No previously deleted formula found.
==> Searching taps on GitHub...
Error: No formulae found in taps.
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灵光闪现，我直接给已经存在的 gcc 创建了软连接：
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| sudo ln -s /usr/bin/gcc /usr/local/bin/gcc-5
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go build 再编译 Go 项目，成功！
谁能告诉我为什么呢？暂且不考虑这神奇的 CGG 问题。