Package: meson Version: 1.10.1-1 Tags: patch upstream Forwarded: https://github.com/mesonbuild/meson/pull/15484 User: [email protected] Usertags: ftcbfs Control: affects -1 + src:libproxy X-Debbugs-Cc: [email protected]
libproxy fails to cross build from source, because meson runs a bare vapigen. This tool has an architecture-dependent search path and for the bare tool searches the build architecture whereas we need it to search the host architecture. Simon McVittie added triplet-prefixed wrappers for vapigen to the vala packaging. Using these wrappers would solve the problem. To that end, Simon filed #1116552. I think that would technically solve the problem, but due to Jussi not being happy with env2mfile yet, we're not using it. Looking at this from another angle, the need to override tools in crossfiles is unfortunate. To me, this always is a second option, because it requires assistance from every build tool. The better option would be to just use the right tool by default. We're in the fortunate situation where all the stars align right: * There is a vapigen.pc. * Since forever vapigen.pc knows the path to the vapigen tool (often with a version suffix). * Simon enhanced vapigen.pc on Debian to name the cross wrapper. * Except for the cross wrapper, this applies to vala upstream, so this applies to most other Linux distributions. I am arguing that the even better solution would be changing the way vapigen is looked up. The priority is as follows: 1. crossfile (e.g. via Simon's #1116552) 2. VAPIGEN environment variable 3. Suggested addition in this bug: vapigen.pc 4. vapigen in $PATH This not only helps with cross building on Debian, but also helps developers trying to coinstall several vala versions in having builds pick up a matching vapigen during native builds. Due to retaining the fallback strategy, it should not negatively impact any builds. This change makes libproxy cross buildable. I am not attaching the patch, because it already is upstream and prefer having its details discussed there. This mainly is a tracking bug for crossqa.debian.net to avoid duplication of work. Helmut
