forked from Kistler-Group/sdbus-cpp
This patch is required if EXPAT library is installed in non-standard location.
Without 'target_include_directories' cmake will find EXPAT library:
...
-- Found EXPAT: .../lib/libexpat.a (found version "2.2.10")
...
But 'xml.cpp' compilation will fail with error:
...
tools/xml2cpp-codegen/xml.cpp:7:10: fatal error: expat.h: No such file or directory
7 | #include <expat.h>
...