Philipp Stephani <p.stephani2@gmail.com> schrieb am Mo., 1. Jan. 2018 um
16:05 Uhr:

> Alan Third <alan@idiocy.org> schrieb am Mo., 1. Jan. 2018 um 15:59 Uhr:
>
>> On Mon, Jan 01, 2018 at 01:15:09PM +0100, Philipp wrote:
>> >
>> > There are a few small bugs when building on macOS and not passing the
>> > right configure options.
>> >
>> > 1. When running configure without options, the build fails with an error
>> >
>> > xml.c:26:10: fatal error: 'libxml/tree.h' file not found
>> > #include <libxml/tree.h>
>> >          ^~~~~~~~~~~~~~~
>> >
>> > Apparently configure detects libxml2 to be present, but doesn't set the
>> > correct include path.
>>
>> This works fine here. Is it possible this was introduced by macOS
>> 10.13?
>>
>> Do you see the file in /usr/include/libxml2/libxml/?
>>
>
> No, /usr/include doesn't exist at all on my system. The include directory
> is
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include.
>

`xcode-select --install` does add a /usr/include directory. If
`xcode-select --install` is necessary for building Emacs, should configure
error out if it hasn't been run?
However, all other parts of the build process seem to work fine without
`xcode-select --install`.