VMD-L Mailing List

From: Vermaas, Joshua (Joshua.Vermaas_at_nrel.gov)
Date: Mon Feb 19 2018 - 14:34:35 CST

Oops. I interpreted your email as switching from gcc to intel. Which isn’t what you did. :) You’ve run into the same error that Vlad did about a month ago: http://www.ks.uiuc.edu/Research/vmd/mailing_list/vmd-l/28152.html, which John fixed via changing the source code and replacing OSPRayRender.C (http://www.ks.uiuc.edu/Research/vmd/mailing_list/vmd-l/att-28152/OSPRayRenderer.C.gz).

Josh Vermaas

Director’s Postdoctoral Fellow
National Renewable Energy Laboratory
joshua.vermaas_at_nrel.gov<mailto:joshua.vermaas_at_nrel.gov>

On Feb 19, 2018, at 12:17 PM, sperez14_at_us.es<mailto:sperez14_at_us.es> wrote:

Hello Josh,

Thank you very much for your help. I did not replace g++ with either. I don't have access to icc or icpc which if I am not mistaken are not free. The test code compiles with both compilers, g++ and gcc. I have looked into the Makefile and I am pretty sure it is using g++ to try to compile it. I have attached it to the email. I there are more solutions than buying icc or icpc.

Sergio

El 19/02/2018 06:41, Vermaas, Joshua escribió:

Hi Sergio,

Did you replace g++ with icc or icpc? Consider the following test code:

#include <cstdio>
int main (int argc, char **argv) {
        int i;
        for (int i = 0; i <10 ; i++) {
                printf("%d\n", i);
        }
}

gcc will refuse to compile it, since "i" is redefined, and that doesn't comply with the old c standards. g++ will compile it just fine. icpc will compile it just fine too. icc, however, will also complain about i being redefined again, since again, it is using the c standards. The moral of the story is that your correct or incorrect installation of the OSPRayRenderer is a red herring. The real problem is likely your makefile adjustments to switch from the gnu to intel compiler toolchain, and accidentally compiling with a C compiler rather than a C++ compiler.

Josh Vermaas

Director's Postdoctoral Fellow
National Renewable Energy Laboratory
joshua.vermaas_at_nrel.gov<mailto:joshua.vermaas_at_nrel.gov><mailto:joshua.vermaas_at_nrel.gov<mailto:joshua.vermaas_at_nrel.gov>>

On Feb 18, 2018, at 1:10 PM, sperez14_at_us.es<mailto:sperez14_at_us.es><mailto:sperez14_at_us.es<mailto:sperez14_at_us.es>> wrote:

Dear vmd comunity,

When I try to compile vmd from the source I get this error:

Compiling OSPRayRenderer.C --> OSPRayRenderer.o ...
OSPRayRenderer.C: In member function 'void OSPRayRenderer::render_compile_and_validate()':
OSPRayRenderer.C:662:12: error: redeclaration of 'int i'
  for (int i = 0; i < directional_lights.num(); ++i) {
           ^
OSPRayRenderer.C:552:7: error: 'int i' previously declared here
  int i;
      ^
OSPRayRenderer.C: In member function 'void OSPRayRenderer::cylinder_array(Matrix4*, float, float*, int, float*, int)':
OSPRayRenderer.C:2027:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (i=0,ind4=0,ind6=0,ind7=0; i<cylnum; i++,ind4+=4,ind6+=6,ind7+=7) {
                                     ^
OSPRayRenderer.C:2035:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (i=0,ind4=0,ind6=0,ind7=0; i<cylnum; i++,ind4+=4,ind6+=6,ind7+=7) {
                                     ^
OSPRayRenderer.C: In member function 'void OSPRayRenderer::trimesh_c4u_n3f_v3f(Matrix4&, unsigned char*, float*, float*, int,
int)':
OSPRayRenderer.C:2474:11: warning: unused variable 'norm' [-Wunused-variable]
    float norm[9];
          ^
OSPRayRenderer.C:2472:15: warning: unused variable 'cn2f' [-Wunused-variable]
  const float cn2f = 1.0f / 127.5f;
              ^
OSPRayRenderer.C: In member function 'void OSPRayRenderer::trimesh_n3f_v3f(Matrix4&, float*, float*, float*, int, int)':
OSPRayRenderer.C:2630:14: warning: unused variable 'c' [-Wunused-variable]
  const rgba c = { uniform_color[0],
             ^
Makefile:578: recipe for target 'OSPRayRenderer.o' failed
make: *** [OSPRayRenderer.o] Error 1

I think I have installed OSPRay correctly (v1.1.1) I do not understand why it fails. My configure options are:

LINUXAMD64 OPENGL OPENGLPBUFFER FLTK TK ACTC IMD LIBSBALL XINERAMA XINPUT LIBOPTIX LIBOSPRAY LIBTACHYON VRPN NETCDF COLVARS TCL PYTHON PTHREADS NUMPY SILENT GCC

The same as linux.amd64.opengl but chaning GCC to ICC.

Thank you very much for your help,

Sergio

<Makefile>