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→Mac OSX: add CCP4 dependency description
Attention: [[generate_XDS.INP]] requires the [https://developer.apple.com/download/more/ Xcode command line tools] to be installed (free of charge): open a Terminal window, and enter <code>sudo xcode-select --install</code> (for Big Sur, the download has a size of about half a GB; the downloader is much too pessimistic about the time it takes).
Attention: [[generate_XDS.INP]] requires the [https://developer.apple.com/download/more/ Xcode command line tools] to be installed (free of charge): open a Terminal window, and enter <code>sudo xcode-select --install</code> (for Big Sur, the download has a size of about half a GB; the downloader is much too pessimistic about the time it takes).
Although CCP4 is not required by XDS itself, some of the programs (XDSSTAT, and MTZ file creation in XDSCONV) use CCP4 tools or libraries. Therefore, CCP4 should be installed. Open a Terminal and check the existence of the file .zprofile , and its content:<pre>
kay@Kays-MacBook-Air-2018 ~ % ls -l .zprofile
-rw-r--r-- 1 kay staff 107 7 Mär 09:41 .zprofile
kay@Kays-MacBook-Air-2018 ~ % cat .zprofile
source /Users/kay/.profile
# Added by CCP4 package manager:
. '/Applications/ccp4-7.1/bin/ccp4.setup-sh'
</pre>If the file does not exist, create it with the contents indicated above; you have to adapt it to your user name and the CCP4 version.
Become familiar with the concept and ways to run commands as "root" - google "mac osx become root". All the installation tasks that are run in a Terminal window require root privileges, since some of the programs and their links are written to /usr/local/bin. (As an alternative that does not require root for installation, one may create a directory $HOME/bin and use that for the programs and links. That would also require modification of the $PATH, by a one-time <code>echo 'export PATH=$PATH:$HOME/bin' >> ~/.profile</code>)
Become familiar with the concept and ways to run commands as "root" - google "mac osx become root". All the installation tasks that are run in a Terminal window require root privileges, since some of the programs and their links are written to /usr/local/bin. (As an alternative that does not require root for installation, one may create a directory $HOME/bin and use that for the programs and links. That would also require modification of the $PATH, by a one-time <code>echo 'export PATH=$PATH:$HOME/bin' >> ~/.profile</code>)
