On 18 September 2017 at 16:57, Helmut Grohne <hel...@subdivi.de> wrote: > Source: qtbase-opensource-src > Version: 5.9.1+dfsg-9 > Severity: wishlist > User: helm...@debian.org > Usertags: rebootstrap > > qtbase-opensource-src fails to cross build from source, because it uses > the build architecture compiler and stuff. > > I looked a bit and it seems one should pass something else for -platform > for cross compilation. It seems to search directories below mkspecs/ and > for arm64 and armel there are particular directories available. We only > need to come up with the right platform_arg (see patch attached). > > After doing so, the build fails to run its own qmake. That's kinda > expected. It seems that the remedy is passing -external-hostbindir and > it expects to find a qmake binary in that directory. With a > self-dependency, we can use the build architecture qmake and the build > goes a lot further until it bumps into #794103:
The only way I could accept that if we could build-depend on a specific version (the same version we are trying to compile). Helmut told me that's not possible, and I know from experience that having a window opened to build qt with an oder qmake it's calling for big troubles. Another possible way to do it is by bootstrapping qmake if build != host.
