failed to install on macos

[gregkonushev-okta]

I have installed libxml2 from brew,
but pip install bblfsh fails with this error:

In file included from bblfsh/libuast/uast.cc:4:
bblfsh/libuast/uast_private.h:4:10: fatal error: 'libxml/tree.h' file not found
#include <libxml/tree.h>
         ^~~~~~~~~~~~~~~
1 error generated.
error: command 'g++' failed with exit status 1

[creachadair]

I believe libxml2 is keg-only, because Homebrew doesn't want to introduce link-time conflicts with existing system libraries. You may need to tell pip where the Homebrew include and lib paths are, though, perhaps something like:

env CFLAGS="-I$(brew --prefix)/opt/libxml2/include/libxml2" pip install bblfsh

Edit: fix missing flag.

[juanjux]

Yes, as explained in the Dependencies section of the readme, this client depends on having libxml2 headers installed.

Next version will remove that requirement.

[creachadair]

Yes, as explained in the Dependencies section of the readme, this client depends on having libxml2 headers installed.

I think the problem was that they are installed, but Homebrew doesn't automatically link them to the default include path.

[gregkonushev-okta]

For Mojave MacOS I was able to solve this problem by installing command line tools from /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg

[bzz]

Thank you for reporting workaround @gregkonushev-okta 🎉

Will close this, if there no objections as a workaround is found AND a it's not worth documenting it elsewhere as @juanjux mentioned - a new version from #128 will not have this dependency at all.

[alichtman]

I just ran into this same issue, and the command that fixed the problem for me was:

env CFLAGS="-I$(brew --prefix)/opt/libxml2/include/libxml2" pip3 install bblfsh

From @creachadair

It would be helpful if this were added to the README. I do not think #128 fixed this issue.

[creachadair]

I just ran into this same issue, and the command that fixed the problem for me was:

env CFLAGS="-I$(brew --prefix)/opt/libxml2/include/libxml2" pip3 install bblfsh

From @creachadair

It would be helpful if this were added to the README. I do not think #128 fixed this issue.

I believe #128 removes the dependency, but that the current release doesn't include it yet. We are planning to cut a release including these changes soon, and at that point this workaround should no longer be required. Sorry for the confusion about timing.

[bzz]

And v3.0.0 release is out now on pypi.