MinGW: Search for packages in standard MSYSTEM environment prefixes
MSYS2 and similar MinGW/MSYS distributions define development
environments with a MSYSTEM
environment variable. Each such
environment has a documented installation prefix for its packages,
often provided by a MSYSTEM_PREFIX
environment variable.
Since !8788 (merged) we can look up this prefix.
Add $MSYSTEM_PREFIX/local
and $MSYSTEM_PREFIX
to our system search
prefixes when targeting MinGW under MSYSTEM
environments. This is
their equivalent to /usr/local
and /usr
, which we search by default
on UNIX systems.
Issue: #24216 (closed)