Failing to link lxml: LIBRARY_PATH ignored?

[powellnorma]

Building lxml requires libxslt. I have compiled it separately with the same toolchain. After setting CPATH, the compile step works, but even though I have set LIBRARY_PATH correctly (via --env), I get ld: error: unable to find library -lxslt.

An strace shows that ld does not look at the path specified in LIBRARY_PATH. Is this something crossenv can fix, or do some packages "ignore"/reset LIBRARY_PATH? Thank you!