I have problems with my macport after update to OS X 10.9.
I try to follow this manual https://trac.macports.org/wiki/Migration to fix them.
But when I install Command Line Tools:
xcode-select --install
I get message
Can't install the software because it is not currently available from the Software Update server.
Meanwhile I successfully updated my other machine to OS X 10.9. and installed command-line tools with no problems, so they must be available.
What is the problem here?
You can download the command line tools for os x mavericks manually from here.
If you are trying this on a latest Mac OS X Mavericks, command line tools come with the Xcode 5.x
So make sure you have installed & updated Xcode to latest
after which make sure Xcode command line tools is pointed correctly using this command
xcode-select -p
Which might show some path like
/Applications/Xcode.app/Contents/Developer
Change the path to correct path using the switch command
xcode-select --switch /Library/Developer/CommandLineTools/
this should help you set it to correct path, after which you can use the same above command -p to check if it is set correctly
For OSX 10.11 or more you can download from here https://developer.apple.com/download/more/.
(The link in the accepted answer doesn't display command line tools for El Capitan (OSX 10.11))
I just got the same error after I upgraded to 10.14 Mojave and had to reinstall command line tools (I don't use the full XCode IDE and wanted command line tools a la carte).
My xcode-select -p path was right, per Basav's answer, so that wasn't the issue.
I also ran sudo softwareupdate --clear-catalog per Lambda W's answer and that reset to Apple Production, but did not make a difference.
What worked was User 92's answer to visit https://developer.apple.com/download/more/.
From there I was able to download a .dmg file that had a GUI installer wizard for command line tools :)
I installed that, then I restarted terminal and everything was back to normal.
This error can occur if you are using a software update server which doesn't host the required package.
You can check this by running
defaults read /Library/Preferences/com.apple.SoftwareUpdate
and seeing if you have an entry called CatalogURL or AppleCatalogURL
You can point back at the Apple software update server by either removing this entry or using the command
sudo softwareupdate --clear-catalog
And then run the command line tools install again.
The command
xcode-select --install
proposes 3 options: Get Xcode; Not Now; Install.
When I choose to get full Xcode the command finished successfully. It took a while, but this way I was able to complete all macports migration instructions.
I know this is an old post but I also ran into this problem today. I found out that when I executed sudo softwareupdate -l the Command Line Tools were listed as an update, so I installed them using sudo softwareupdate -i -a.
Once you get the command line tools loaded as described by Nikos M in his excellent answer above you will need to agree to the gcc license and if you are using ruby gems you may need to link llvm-gcc as gcc-4.2.
If you do not do these the gem install will report "You have to install development tools first." after you have already installed them.
The steps are:
sudo gcc
sudo ln -s /usr/bin/llvm-gcc /usr/bin/gcc-4.2
The gcc must be run once under sudo so Apple can update their license info, you don't need an input file, it will update the license before it checks its arguments. The link is needed so that ruby 1.9 can find the compiler when building certain gems, such as the debugger. This may be fixed in ruby 2.x, but I'll cross that bridge when I get there.
I had to run Xcode.app and agree to the License Agreement
Setup: Brand new MacBook with Mavericks, then brew install and other c/l type things 'just work'.
Command + Space
Search for Xcode
Open it and accept license
Then run again from terminal xcode-select --install
Had the same issue and was getting the same error. When i ran xcode-select -p, it gave output as /Library/Developer/CommandLineTools. So that means xcode was already installed in my system. Then i ran steps as given on this answer. After which any command which required xcode ran successfully.
来源：https://stackoverflow.com/questions/19907576/xcode-is-not-currently-available-from-the-software-update-server