HYPRE blas build error with VS 2015

Question

I installed VS 2015 Professional. I installed the latest HYPRE, from the Lawrence Livermore website . I then configured it using CMake and proceeded to build, and I started getting BLAS ( dnrm2.c ) build errors:

2>         dnrm2.c
2>     1>
C:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt\math.h(454): error C2059: syntax error: '('

The line of code triggering the error in dnrm2.c is:

#include "math.h"

which points to the file:

c:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt\math.h

I looked up this error and found some suggestions such as this to change the include to:

#include <cmath>

and to edit the HYPRE project settings in: Configuration > C/C++ > Advanced > Compile As to Compile As C++ (/TP)

which I did, but I still see same error, since apparently the same header path to math.h is included from cmath as well:

#else /* _STD_USING */
 #include <math.h>
#endif /* _STD_USING */

I've even tried re-installing VS 2015 without any luck (same errors). Appreciate any ideas on what's going on here, and how to resolve this. I guess I could try a minimalist example in VS 2015 that includes the math.h and report back, if that helps.

EDIT My minimalist example:

#include "math.h"

int main() {
  double d1 = sqrt(4.0);
  float d2 = abs(4.0);
  return 0;
} 

appears to be building OK. I tried to set the project the same way to Compile as C (or C++, didn't matter). This doesn't really help me though.

Answer 1

OK, the problem here is with HYPRE source it looks like. They have this in a file f2c.h included before including the math.h :

//#undef abs
//#define abs(x) ((x) >= 0 ? (x) : -(x))
//#endif

When I commented it out (since this is already defined in the standard), then it gets past that build error. Of course I run into other build errors. I'm trying to tackle those separately.

EDIT: It's not as simple as that because they (HYPRE) actually rely on their own definition of abs . So I had undo the above and change the order of some includes so that the undef actually made sense. Either way, this is a HYPRE source code problem.

Answer 2

If you succeed in compiling the HYPRE on VS2015, Could you send your VS2015 program to me! My major is Geophysics modeling and inversion. MY email is schoolhui@hotmail.com Thank you very much!

Answer 3

I've just commented

_Check_return_ int       __cdecl abs(_In_ int _X);

in

c:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt\math.h

and then HYPRE was successfully compiled!

Then, I've uncommented "abs".