Make ppm vhook depend on fork()

Originally committed as revision 9312 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 2 insertions, 0 deletions

diff --git a/configure b/configure
index 119320e76d..1b3b1147a0 100755
--- a/configure
+++ b/configure
@@ -1667,6 +1667,8 @@ elif check_func dlopen -ldl; then
     ldl=-ldl
 fi
 
+check_func fork
+
 test "$vhook" = "default" && vhook="$dlopen"
 
 enabled_any vhook liba52bin libfaadbin ffserver && add_extralibs $ldl