subsurface-configure.pri: add another libxml/libxslt detection stage

libxml and libxslt use custom -config scripts which brake
qmake and make on Win32. The output of executing a .sh or .cmd
script with the same name produces garbled output. The output
of executables with the same name is untested, but a bit excessive
as a solution.

To work around the issue add another detection stage, which checks
if the previous output from (e.g.) xml2-config is empty and try
to use pkg-config instead.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

0 files changed, 0 insertions, 0 deletions