格式

Question

在命令行运行时（WIN7 CMD）的gcc -print-搜索显示目录生产：

install: C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/ 
programs: =C:/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/5.1.0/;C:/mingw64/bin/../libexec/gcc/;C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/../../../../x86_64-w64-mingw32/bin/x86_64-w64-mingw32/5.1.0/;C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/../../../../x86_64-w64-mingw32/bin/ 
libraries: =C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/;C:/mingw64/bin/../lib/gcc/;C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/../../../../x86_64-w64-mingw32/lib/x86_64-w64-mingw32/5.1.0/;C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/../../../../x86_64-w64-mingw32/lib/../lib/;C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/../../../x86_64-w64-mingw32/5.1.0/;C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/../../../../lib/;C:/mingw510/x86_64-510-posix-seh-rt_v4-rev0/mingw64/mingw/lib/x86_64-w64-mingw32/5.1.0/;C:/mingw510/x86_64-510-posix-seh-rt_v4-rev0/mingw64/mingw/lib/../lib/;C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/../../../../x86_64-w64-mingw32/lib/;C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/../../../;C:/mingw510/x86_64-510-posix-seh-rt_v4-rev0/mingw64/mingw/lib/` 

我明白分号（如PATH），但如图所示，我不清楚/../。有人可以解释吗？

Answer 1

它与任何路径规范中的..含义相同，即父目录。例如，C:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.1.0/对应于C:/mingw64/lib/gcc/x86_64-w64-mingw32/5.1.0/。