http://bugs.gentoo.org/351496
http://patch-tracker.debian.org/patch/series/view/libvpx/0.9.5-1/01_enable-shared.patch

--- configure
+++ configure
@@ -415,12 +415,6 @@
 }
 
 process_detect() {
-    if enabled shared; then
-        # Can only build shared libs on a subset of platforms. Doing this check
-        # here rather than at option parse time because the target auto-detect
-        # magic happens after the command line has been parsed.
-        enabled linux || die "--enable-shared only supported on ELF for now"
-    fi
     if [ -z "$CC" ]; then
         echo "Bypassing toolchain for environment detection."
         enable external_build