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I'm trying to compile a C-code for research (sac seismic analysis), and the compilation require libxml2 libraries which obviously are missing on my iMac (Sonoma 14.7.1). No libxml in /usr/lib or usr/local/lib.
How can I implement them or are those librairies hidden somewhere?
Thanks for you help
Christel
iMac 27″, macOS 14.7
It depends on whether you are using Apple's Developer tools (Xcode or Command Line Tools for Xcode), or some other compilation suite (e.g. GNU C) or IDE. If any dependencies were installed with a package manager (homebrew, MacPorts, etc.) and your code depends upon them, you need to refer to those libraries and include instructions.
The current Xcode and command line tools for Xcode install libxml2 in their respective lib and include locations.
Thanks, I'm using command line on a terminal window (X11 or Terminal), so I guess I have to install them through a package manager even though I have Xcode installed ? or can I find the library inside a Xcode associated repertory ?
I haven't done anything with X11 XTerm in ages, so cannot comment on compilation suite behavior in that environment. It would seem to me that you should find the xml2 bits in these locations that clang should just find on macOS 15.1.1 using the Command Line Tools for Xcode 16.1. I don't have a Sonoma installation at this time, but would expect the libXML stuff to be in the most recent locations for the last SDKs installed there.
Include
/Library/Developer/CommandLineTools/SDKs/MacOSX15.1.sdk/usr/include/libxml2/libxml
Library
/Library/Developer/CommandLineTools/SDKs/MacOSX15.1.sdk/usr/lib/libxml2.2.tbd
No need to install libxml2 from a package manager.
Apple moved ~everything into the Xcode app bundle and related a while back, and away from having one set of includes in a traditional spot. This to allow several different SDKs to be installed in parallel, and to also allow easier updates. They added some knobs to make that work better, though.
IIRC…
Set the SDK path you are using, akin to this:
https://andreasfertig.blog/2021/02/clang-and-gcc-on-macos-catalina-finding-the-include-paths/
Related, useful in your login script:
export SDKROOT="`xcrun --show-sdk-path`"
I changed something to get command-line builds working a while back too, but am not entirely certain what, and will be back to the Mac to check that later today.
Got them! thanks !
I'll try to compile with the according links.
Have a nice day
You are welcome.
compilation c code failed because libxml2 library is missing on my iMac sonoma