[MacPorts] BigSurProblems modified

[MacPorts Wiki]

Page "BigSurProblems" was changed by c9s
Diff URL: <https://trac.macports.org/wiki/BigSurProblems?action=diff&version=7>
Revision 7
Changes:
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Index: BigSurProblems
=========================================================================
--- BigSurProblems (version: 6)
+++ BigSurProblems (version: 7)
@@ -18,6 +18,10 @@
 
 Symptoms that your system requires manual installation: console message about missing SDK (`Warning: The macOS 11.x 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'.`) or a message about C compiler being unable to create executables in build logs. 
 
+If `xcode-select --install` shows that the command-line tools are already installed, but `ls /Library/Developer/CommandLineTools/SDKs/` did not list the desired version, you need to download the installer from Apple developer center manually
+
+[https://developer.apple.com/download/all/?q=command%20line%20tools developer.apple.com]
+
 == Rosetta 2 and build_arch ==
 
 MacPorts defaults to building for the architecture that it is running as. If you have a universal MacPorts installation on an Apple Silicon Mac, and you run it from a terminal emulator that is not a native arm64 binary, MacPorts will end up being run as x86_64, and will build ports accordingly, which is often unexpected. This can be corrected by explicitly setting `build_arch arm64` in macports.conf, or by using a native terminal emulator.
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