[CMake] Interference between MSVC and g95

[Brad King]

Arjen Markus wrote:
> Brad King wrote:
>> Arjen Markus wrote:
>>   
>>> It means that a combination of MSVC and g95 in one project is
>>> impossible.
>>
>> I think the problem is that the platform files for GNU and MSVC tools
>> are both getting loaded but they have been written assuming they are
>> always separate (which is the case in C-and C++-only projects).  Please
>> send me a tarball containing the entire build tree of your toy project
>> that reproduces the problem.
>>   
> I will do that as soon as possible.

Nevermind, I managed to get a similar cl/gfortran environment setup.

I've been able to reproduce the problem with this code:

   cmake_minimum_required(VERSION 2.6)
   project(FOO C Fortran)
   add_executable(hello hello.c)
   add_executable(helloF hello.f)

The Fortran executable tries to link with MSVC flags.  The bug is that 
the MSVC tool set uses some variables that are not language-specific to 
configure linking flags.  Then these flags end up getting used to link 
Fortran too.  You can work around the problem with this code:

   string(REGEX REPLACE "<LINK_FLAGS>" "" CMAKE_Fortran_LINK_EXECUTABLE
          "${CMAKE_Fortran_LINK_EXECUTABLE}")

which tells CMake to not use the linker flags.  Meanwhile, please submit 
a bug report here:

   http://www.cmake.org/Bug

and send me the bug number.

Thanks,
-Brad