On 6/17/2010 11:07 AM, Alok Govil wrote:
Hi Alan,
> > Just like CMake is able to distinguish different versions of Visual
Studio,
> > would it distinguish MinGW-32 with MinGW-64 also (which means
either both
> > would be in path simultaneously, or neither would be, and cmake
picks the
> > right one based on the generator specifed)? Let me know if so, and
I'll be
> > happy to test this.
>
> I had never heard of those MinGW variants until you mentioned them,
and it
> appears CMake is not specifically aware of them either. I presume that's
> why you had to rename to gcc.exe (something CMake specifically
recognizes)
> to get them to work. But that is a brute-force way to get CMake to
> recognize a compiler with a different name. I would forget the renaming,
> and instead use CMAKE_<LANG>_COMPILER (e.g., CMAKE_C_COMPILER,
> CMAKE_CXX_COMPILER, etc.) to allow you to choose which compiler (the
32-bit
> variant or 64-bit variant) you want to use. See the CMake
documentation for
> how to use CMAKE_<LANG>_COMPILER.
Just FYI:
Reading the change-log for RC1 and RC2 (see below), I assuming that
CMake has gained ability to build on MinGW-W64 (see below). As I now
know, CMake 2.8 builds on MinGW-W64 already.
Changes in CMake 2.8.2-rc1 (since 2.8.1):
- Build on Tru64 (#10542)
- Build on mingw-w64
...
I'll look into your suggestion again. In general, the prefixes and
renaming issue with MinGW is a MinGW issue I would think. And this needs
to be done not just for g++.exe, but some 15-20 .exe files in the bin
folder. In fact to keep things compatible with different tools, they
already put one file under several names!
This has some information about the build on mingw64 and the choice of make:
http://public.kitware.com/Bug/view.php?id=10690
-Bill
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