Re: [Effectv-developers] Bug report

[Kentaro F. <fu...@me...>]

Hello Cyril,

> Today i tried to compile effectv on my slackware 11.0 and it failed :
> 
> gcc -DUSE_NASM -DUSE_MMX -DUSE_VLOOPBACK -DVLOOPBACK_VERSION=91 -DDEFA
> DEVICE=\""/dev/video0"\" -DI686 -march=pentiumpro -O3 -fomit-frame-poi
> oll-loops -Iv4lutils `sdl-config --cflags` -Wall -c -o utils.o utils.c
> utils.c:30: error: conflicting types for 'trunc'
> utils.c:30: error: conflicting types for 'trunc'
> make[1]: *** [utils.o] Error 1
> make[1]: Leaving directory `/home/sx/src/effectv-0.3.11'
> make: *** [all-recursive] Error 2

This compile-time bus was introduced by recent glibc and gcc, who had its own
"trunc()" function.

A better way to avoid this bug is renaming them to, say "itrunc()".
A patch follows.

Thanks,

Kentaro Fukuchi.

Index: utils.c
===================================================================
--- utils.c     (revision 492)
+++ utils.c     (working copy)
@@ -26,7 +26,7 @@
 /*
  * HSI color system utilities
  */
-static int trunc(double f)
+static int itrunc(double f)
 {
        int i;

@@ -44,9 +44,9 @@
        Gv=1+S*sin(H);
        Bv=1+S*sin(H+2*M_PI/3);
        T=255.999*I/2;
-       *r=trunc(Rv*T);
-       *g=trunc(Gv*T);
-       *b=trunc(Bv*T);
+       *r=itrunc(Rv*T);
+       *g=itrunc(Gv*T);
+       *b=itrunc(Bv*T);
 }

 /*