我使用的是WSL（Windows Subsystem for Linux），版本是Ubuntu 20.04 LTS。
BUILD_TOOL = \
build_tool.o
CC = clang-3.8
LIBS = ../out/x64/libmbedcrypto.a
all: build_tool
build_tool: $(BUILD_TOOL)
$(CC) $(BUILD_TOOL) $(LIBS) -o build_tool
显示错误：
clang-3.8: command not found
我尝试通过 apt-get 安装它，但没有安装候选。
$ sudo apt-get install clang-3.8`
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package clang-3.8 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: …