Bug#451648: mesa: configures for the build, not the host - broken cross builds.
Neil Williams wrote:
> Package: mesa
> Version: 7.0.2-2
> Severity: normal
> User: codehelp@debian.org
> Usertags: crossbuilt
>
> *** Please type your report below this line ***
>
> mesa appears to configure the package according to the DEB_BUILD_GNU_TYPE
> which leads to bizarre behaviour when trying to cross build.
> e.g. trying to cross build for arm in each case:
> amd64 uses -m64 which is not recognised by arm-linux-gnu-gcc
> i386 attempts to build x86 code
> powerpc - appears to proceed.
>
> When cross building for arm, the package should configure as it would
> on an arm box, independent of which architecture is being used to build
> for arm.
>
> Some of the detection code may need to be changed upstream but during a
> normal Debian build, --build == --host so this should not be difficult.
>
> To cross build, mesa needs to look at the --host argument and maybe
> fallback to --build only if --host is not given or is the same as
> --build.
>
The Mesa build system is horrible, I don't think anybody in the team
will seriously want to look at this problem unfortunately. There is a bit
of work being done upstream to cleanup things, but it will take time...
Brice
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