[cfe-dev] MinGW include directories [RFC]

[NAKAMURA Takumi]

Yaron,

At first, we may implement the driver instead of twiddling InitHeaderSearch.
By the way, did you consider cross tools on other hosts, like cygwin and linux?

...Takumi

2014-03-23 19:36 GMT+09:00 Yaron Keren <yaron.keren at gmail.com>:
> Hi,
>
> The current setup of MinGW include directories in InitHeaderSearch.cpp has
> several problems:
>
> * New versions are added manually to the code.
> * All existing versions of MinGW directories are added regardless of what is
> actually installed (and pruned later), wasted work.
> * Two MinGW.org C includes are missing.
> * If multiple MinGW versions are installed clang will add directories for
> all of them leading to unpredictable results.
>
> I'd like to suggest that clang will add include directories only for the
> gcc.exe which is on the system PATH based on the list below for both
> distributions.
> This way:
> * clang will not add include diectories for every possible version, only for
> this one.
> * clang  will correctly hanlde multiple based on the dveloper choice which
> gcc.exe is on the path
> * We won't have to manually update new versions in InitHeaderSearch.cpp.
>
> What do you think?
>
> Yaron
>
> mingw.org
> ---------
> gcc location
> BASEPATH\bin\gcc.exe
>
> C32 includes
> BASEPATH\lib\gcc\mingw32\X.Y.Z\include
> BASEPATH\lib\gcc\mingw32\X.Y.Z\include-fixed
> BASEPATH\include
>
> C++32 includes
> BASEPATH\lib\gcc\mingw32\X.Y.Z\include\c++
> BASEPATH\lib\gcc\mingw32\X.Y.Z\include\c++\mingw32
> BASEPATH\lib\gcc\mingw32\X.Y.Z\include\c++\backward
>
> mingw-w64
> ---------
> gcc includes
> BASEPATH\bin\gcc.exe
>
> C32 includes
> BASEPATH\lib\gcc\i686-w64-mingw32\X.Y.Z\include
> BASEPATH\lib\gcc\i686-w64-mingw32\X.Y.Z\include-fixed
> BASEPATH\i686-w64-mingw32\include
>
> C64 includes
> BASEPATH\lib\gcc\x86_64-w64-mingw32\X.Y.Z\include
> BASEPATH\lib\gcc\x86_64-w64-mingw32\X.Y.Z\include-fixed
> BASEPATH\x86_64-w64-mingw32\include
>
> C++32 includes
> BASEPATH\i686-w64-mingw32\include\c++
>
> C++64 includes
> BASEPATH\x86_64-w64-mingw32\include\c++
>
>
>