* ./configure.ac.in: Added --with-libmpeg2-tree

configure.ac.in

@@ -1818,6 +1818,32 @@ AC_ARG_ENABLE(libmpeg2,
   [  --enable-libmpeg2       libmpeg2 decoder support (default enabled)])
 if test "x${enable_libmpeg2}" != "xno"
 then
+  AC_ARG_WITH(libmpeg2-tree,
+  [    --with-libmpeg2-tree=PATH libmpeg2 tree for static linking])
+  if test "x${with_libmpeg2_tree}" != "x"
+  then
+    AC_MSG_CHECKING(for libmpeg2.a in ${with_libmpeg2_tree})
+    real_libmpeg2_tree="`cd ${with_libmpeg2_tree} 2>/dev/null && pwd`"
+    if test "x${real_libmpeg2_tree}" = x
+    then
+      dnl  The given directory can't be found
+      AC_MSG_RESULT(no)
+      AC_MSG_ERROR([cannot cd to ${with_libmpeg2_tree}])
+    fi
+    if test -f "${real_libmpeg2_tree}/libmpeg2/.libs/libmpeg2.a"
+    then
+      dnl  Use a custom libmpeg2
+      AC_MSG_RESULT(${real_libmpeg2_tree}/libmpeg2/.libs/libmpeg2.a)
+      PLUGINS="${PLUGINS} libmpeg2"
+      LDFLAGS_libmpeg2="${LDFLAGS_libmpeg2} -L${real_libmpeg2_tree}/libmpeg2/.libs -lmpeg2"
+      CFLAGS_libmpeg2="${CFLAGS_libmpeg2} -I${real_libmpeg2_tree}/include"
+      eval "`cd ${real_libmpeg2_tree}/include && ln -sf . mpeg2dec 2>/dev/null`"
+    else
+      dnl  The given libmpeg2 wasn't built
+      AC_MSG_RESULT(no)
+      AC_MSG_ERROR([cannot find ${real_libmpeg2_tree}/libmpeg2/.libs/libmpeg2.a, make sure you compiled libmpeg2 in ${with_libmpeg2_tree}])
+    fi
+  else
     AC_CHECK_HEADERS(mpeg2dec/mpeg2.h, [
       AC_MSG_CHECKING(for libmpeg2 version >= 0.3.2)
       AC_EGREP_CPP(yes,
@@ -1835,6 +1861,7 @@ then
 
       [AC_MSG_ERROR([Could not find libmpeg2 on your system: you may get it from http://libmpeg2.sf.net/ (you need the cvs version). Alternatively you can use --disable-libmpeg2 to disable the libmpeg2 plugin.])]
     )
+  fi
 fi
 
 dnl