mngutil.c:36: erreur: conflicting types for ‘png_save_uint_16’
/usr/include/png.h:2640: erreur: previous declaration of ‘png_save_uint_16’ was here
make[2]: *** [xvidcap-mngutil.o] Erreur 1
make[2]: *** Attente des tâches non terminées....
make[2]: quittant le répertoire « /var/tmp/portage/xvidcap-1.1.3-r4/work/xvidcap-1.1.3/src »
make[1]: *** [all-recursive] Erreur 1
make[1]: quittant le répertoire « /var/tmp/portage/xvidcap-1.1.3-r4/work/xvidcap-1.1.3 »
make: *** [all] Erreur 2

!!! ERROR: x11-misc/xvidcap-1.1.3-r4 failed.
Call stack:
  ebuild.sh, line 1545:   Called dyn_compile
  ebuild.sh, line 940:   Called src_compile
  xvidcap-1.1.3-r4.ebuild, line 63:   Called die

!!! Compilation failed
!!! If you need support, post the topmost build error, and the call stack if relevant.