[cfe-dev] Clang on Windows targeting gcc requirements

[Edward Diener]

On 6/25/2015 2:13 PM, Yaron Keren wrote:
> See http://reviews.llvm.org/D5268
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__reviews.llvm.org_D5268&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=CnzuN65ENJ1H9py9XLiRvC_UQz6u3oG6GUNn7_wosSM&m=YgSrUuiAhPt76cF_h_LXb8Mg84W8p9nMvUiL3koHKP4&s=aW_6t6KDGfo5hO6NiTn5Hy9afNhzwfkX-BZHT9PtXmk&e=>

I can see that the patch has been applied officially to the latest clang 
source. It's in the latest code when I update llvm/clang. Thanks very much !

But how do I use it ?

Am I supposed to be able to build clang using a mingw-64 distro in my PATH ?

When I compile with clang how do I tell it to use the mingw-64 headers 
and RTL ? Does it matter whether the mingw-64 distro is 32 bit or 64 bit ?

Do I need to have the mingw-64 distro at c:\mingw ?

I am willing to test this for clang and report back results here, since 
I can easily switch between mingw-64 distros ( 4.8.4, 4.9.2, 5.1 ) and I 
test a number of Boost libraries including my own with clang, but I need 
a little information on how to do it.

>
>
>
> 2015-06-25 10:46 GMT+03:00 Edward Diener
> <eldlistmailingz at tropicsoft.com
> <mailto:eldlistmailingz at tropicsoft.com>>:
>
>     For either the latest clang built from souce on Windows or a binary
>     distribution of clang on Windows it appears that clang expects the
>     supporting gcc include files and lib files to be in the hardcoded
>     directory:
>
>     c:\mingw
>
>     and follow the mingw directory structure.
>
>     1) Can this please be changed in the future so that some environment
>     variable ( maybe CLANG_GCC ) can be set to the gcc installation
>     rather than use a hardcoded path ?
>
>     2) Can clang be updated to support the mingw-64 directory structure
>     and not just the mingw directory structure ? The mingw-64 distros
>     seem now to be the preferred gcc distributions on Windows and
>     support the latest versions of gcc.
>
>     Do I need to make these suggestions on the clang bug tracker for the
>     suggestions to be seriously considered ?u