Compiling with pgCC and including complex.h

Accelerated Computing HPC Compilers Legacy PGI Compilers
1

Based on this post

we just upgraded our compilers to version 6.1-3 and rebuilt mpich accordingly. However, we still get the same error message, even for a simple test program which just includes complex.h. Does the 6.1-3 version support this part of C99? If so, can someone point the way out of my confusion?

Thanks

2

Hi ghoti,

C99 Complex numbers are supported in both pgcc and pgCC. With pgcc you would use the “complex.h” header file. However, pgCC uses the C++ header file “complex”. So changing “#include <complex.h>” to “#include ” will allow you to use compex numbers with pgCC.

Hope this helps,
Mat

3

Thanks,

I’ll give that a shot.

4

I am having the same issue with pgcc version 6.1-3, when add
#include “complex.h” I get the same error messages a in the post Severe Problem with PGF90

5

Hi KRB,

To use “complex.h” with the 6.1 pgcc compiler, you need to enable C99 support by adding the “-c9x” flag. Note that “-c9x” is used by default with the 6.2 compilers.

Hope this helps,
Mat

% cat cmp.c
#include <complex.h>

int main () {
   exit(0);
}
% pgcc -V6.1-3 cmp.c -c9x