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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6)
Gecko/20040612 Firefox/0.8

Description of problem:
When using dpms.h in a C++ program. The code is compiled and linked
correctly, but when the program is ran the DPMS symbols have been
mangled by C++ and the DPMS* functions can't be located and the
program crashes. Suggest putting and #ifdef __cplusplus extern "C" in
the dpms.h header to correct this problem.

Example from xpm.h, which works correctly with C++

#ifdef __cplusplus
extern "C" {
#endif


Version-Release number of selected component (if applicable):
xorg-x11-devel-6.7.0-2

How reproducible:
Always

Steps to Reproduce:
1. create a c++ program that uses DPMSQueryExtension
2. compile and link program
3. execute program
    

Actual Results:   relocation error: 
undefined symbol: _Z18DPMSQueryExtensionP9_XDisplayPiS1_


Expected Results:  Program should execute correctly.

Additional info:

When compiling against C code the program works correctly.

In my program I did this and it solved the problem

#ifdef DPMSExtension
#include <X11/Xlib.h>
#ifndef DPMS_SERVER

#include <X11/X.h>
#include <X11/Xmd.h>

extern "C" Bool DPMSQueryExtension(Display *, int *, int *);
extern "C" Bool DPMSCapable(Display *);
extern "C" Status DPMSInfo(Display *, CARD16 *, BOOL *);
extern "C" Status DPMSEnable(Display *);
#endif
#endif