使用port安装程序的时候，提示：
Warning: The macOS 12 SDK does not appear to be installed. Ports may not build correctly. Warning: You can install it as part of the Xcode Command Line Tools package by running `xcode-select --install'. ---> Fetching archive for libiconv ---> libiconv-1.17_0.darwin_21.x86_64.tbz2 doesn't seem to exist in /opt/local/var/macports/incoming/verified ---> Attempting to fetch libiconv-1.17_0.darwin_21.x86_64.tbz2 from https://packages.macports.org/libiconv % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- 0:01:01 --:--:-- 0 ---> Attempting to fetch libiconv-1.17_0.darwin_21.x86_64.tbz2 from https://nue.de.packages.macports.org/libiconv % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 1523k 100 1523k 0 0 482k 0 0:00:03 0:00:03 --:--:-- 482k ---> Attempting to fetch libiconv-1.17_0.darwin_21.x86_64.tbz2.rmd160 from https://nue.de.packages.macports.org/libiconv % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 512 100 512 0 0 2273 0 --:--:-- --:--:-- --:--:-- 2275 ---> Installing libiconv @1.17_0 ---> Cleaning libiconv ---> Removing work directory for libiconv ---> Deactivating libiconv @1.16_1 ---> Cleaning libiconv ---> Removing work directory for libiconv ---> Activating libiconv @1.17_0 x ./ x ./+PORTFILE x ./+CONTENTS x ./+DESC x ./+STATE x ./opt/ x ./+COMMENT x ./opt/local/ x ./opt/local/bin/ x ./opt/local/include/ x ./opt/local/lib/ x ./opt/local/share/ x ./opt/local/share/man/ x ./opt/local/share/doc/ x ./opt/local/share/doc/libiconv/ x ./opt/local/share/doc/libiconv/iconv_close.3.html x ./opt/local/share/doc/libiconv/iconv.3.html x ./opt/local/share/doc/libiconv/iconvctl.3.html x ./opt/local/share/doc/libiconv/iconv_open_into.3.html x ./opt/local/share/doc/libiconv/iconv_open.3.html x ./opt/local/share/doc/libiconv/iconv.1.html x ./opt/local/share/man/man3/ x ./opt/local/share/man/man1/ x ./opt/local/share/man/man1/iconv.1.gz x ./opt/local/share/man/man3/iconv_open.3.gz x ./opt/local/share/man/man3/iconv.3.gz x ./opt/local/share/man/man3/iconvctl.3.gz x ./opt/local/share/man/man3/iconv_close.3.gz x ./opt/local/share/man/man3/iconv_open_into.3.gz x ./opt/local/lib/libcharset.a x ./opt/local/lib/libcharset.1.dylib x ./opt/local/lib/libiconv.2.dylib x ./opt/local/lib/libiconv.dylib x ./opt/local/lib/libcharset.dylib x ./opt/local/lib/libiconv.a x ./opt/local/include/libcharset.h x ./opt/local/include/localcharset.h x ./opt/local/include/iconv.h x ./opt/local/bin/iconv ---> Cleaning libiconv ---> Removing work directory for libiconv Warning: The macOS 12 SDK does not appear to be installed. Ports may not build correctly. Warning: You can install it as part of the Xcode Command Line Tools package by running `xcode-select --install'. ---> Fetching archive for ncurses ---> ncurses-6.3_0.darwin_21.x86_64.tbz2 doesn't seem to exist in /opt/local/var/macports/incoming/verified ---> Attempting to fetch ncurses-6.3_0.darwin_21.x86_64.tbz2 from https://packages.macports.org/ncurses % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- 0:00:15 --:--:-- 0^C
解决：
先下载对应的command line工具，打开：More – Downloads – Apple Developer
找到对应的工具，如Command_Line_Tools_for_Xcode_14，然后下载安装即可。
[~]$ sudo port -v install e2fsprogs Password: ---> Fetching archive for ncurses ---> ncurses-6.3_0.darwin_21.x86_64.tbz2 doesn't seem to exist in /opt/local/var/macports/incoming/verified ---> Attempting to fetch ncurses-6.3_0.darwin_21.x86_64.tbz2 from https://packages.macports.org/ncurses % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 1346k 100 1346k 0 0 2399k 0 --:--:-- --:--:-- --:--:-- 2404k ---> Attempting to fetch ncurses-6.3_0.darwin_21.x86_64.tbz2.rmd160 from https://packages.macports.org/ncurses % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 512 100 512 0 0 6895 0 --:--:-- --:--:-- --:--:-- 6918 ---> Installing ncurses @6.3_0 ---> Cleaning ncurses ---> Removing work directory for ncurses ---> Deactivating ncurses @6.2_0 ---> Cleaning ncurses ---> Removing work directory for ncurses ---> Activating ncurses @6.3_0 x ./ x ./+PORTFILE x ./+CONTENTS x ./+DESC x ./+STATE x ./opt/ x ./+COMMENT x ./opt/local/ x ./opt/local/bin/ x ./opt/local/include/
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