diff -upr ffmpeg-old/Makefile ffmpeg/Makefile
--- ffmpeg-old/Makefile	2006-03-31 17:47:29.000000000 +0200
+++ ffmpeg/Makefile	2006-04-29 02:25:32.046875000 +0200
@@ -38,6 +38,11 @@ endif
 
 ifeq ($(BUILD_SHARED),yes)
 DEP_LIBS=libavcodec/$(SLIBPREF)avcodec$(SLIBSUF) libavformat/$(SLIBPREF)avformat$(SLIBSUF)
+# Cygwin gcc/ld compiles shared libraries, but fails while autoimporting the static variables
+# hence let's force avformat library to be always static
+    ifeq ($(TARGET_OS),CYGWIN)
+        DEP_LIBS=libavcodec/$(SLIBPREF)avcodec$(SLIBSUF) libavformat/$(LIBPREF)avformat$(LIBSUF)
+    endif
 else
 DEP_LIBS=libavcodec/$(LIBPREF)avcodec$(LIBSUF) libavformat/$(LIBPREF)avformat$(LIBSUF)
 endif
diff -upr ffmpeg-old/libavformat/Makefile ffmpeg/libavformat/Makefile
--- ffmpeg-old/libavformat/Makefile	2006-04-17 19:52:53.000000000 +0200
+++ ffmpeg/libavformat/Makefile	2006-04-29 02:25:32.062500000 +0200
@@ -97,4 +97,15 @@ LIBVERSION=$(LAVFVERSION)
 LIBMAJOR=$(LAVFMAJOR)
 endif
 
+#FIXME: This needs to be in configure/config.mak
+# Cygwin gcc/ld compiles shared libraries, but fails while autoimporting the static variables
+# hence let's force avformat library to be always static
+ifeq ($(TARGET_OS),CYGWIN)
+    BUILD_SHARED=no
+    BUILD_STATIC=yes
+    LIB=$(LIBPREF)$(NAME)$(LIBSUF)
+    SLIBNAME=
+    $(warning Library avformat will be static and not shared)
+endif
+
 include $(SRC_PATH)/common.mak