Hi everyone, Following further testing and advice, it turns out that libxslt1-dev's pkgconfig file does not need to be updated, as /usr/include and /usr/include/<triplet> are part of the search path on Debian.
So, I'm attaching a new patch taking this into account. Changelog: Move xsltconfig.h to an arch-specific include directory. Thanks -- Hugh McMaster
0001-libxslt1-dev-Move-xsltconfig.h-to-usr-include-triple.patch
Description: 0001-libxslt1-dev-Move-xsltconfig.h-to-usr-include-triple.patch