rewrite powf stuff a bit.

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2718

configure.in

@@ -60,6 +60,8 @@ AC_MSG_CHECKING(if environ can be linked)
 AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern char ** environ;]],[[*environ;]])],
 [AC_MSG_RESULT(yes);AC_DEFINE(ENVIRON_LINKED,1,[environ can be linked])],AC_MSG_RESULT(no))
 
+AC_CHECK_LIB([m],[powf],,[AC_DEFINE([DB_HAVE_NO_POWF],[1],[libm doesn't include powf])])
+
 dnl Checks for libraries.
 
 #Check if the compiler support attributes

include/cross.h

@@ -16,11 +16,15 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: cross.h,v 1.16 2006-02-09 11:47:47 qbix79 Exp $ */
+/* $Id: cross.h,v 1.17 2006-11-07 11:43:12 qbix79 Exp $ */
 
 #ifndef DOSBOX_CROSS_H
 #define DOSBOX_CROSS_H
 
+#ifndef DOSBOX_DOSBOX_H
+#include "dosbox.h"
+#endif
+
 #include <stdio.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -56,4 +60,10 @@
 #define ftruncate(blah,blah2) chsize(blah,blah2)
 #endif
 
+//Solaris maybe others
+#if defined (DB_HAVE_NO_POWF)
+#include <math.h>
+static inline float powf (float x, float y) { return (float) pow (x,y); }
+#endif
+
 #endif

src/hardware/mixer.cpp

@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: mixer.cpp,v 1.42 2006-08-25 09:40:19 c2woody Exp $ */
+/* $Id: mixer.cpp,v 1.43 2006-11-07 11:43:13 qbix79 Exp $ */
 
 /* 
 	Remove the sdl code from here and have it handeld in the sdlmain.
@@ -55,10 +55,6 @@
 #define MIXER_REMAIN ((1<<MIXER_SHIFT)-1)
 #define MIXER_VOLSHIFT 13
 
-#if defined(__sun) || defined(__sun__)
-static inline float powf (float x, float y) { return pow (x,y); }
-#endif                                                                        
-
 static inline Bit16s MIXER_CLIP(Bits SAMP) {
 	if (SAMP < MAX_AUDIO) {
 		if (SAMP > MIN_AUDIO)