diff -up libvpx-1.7.0/build/make/configure.sh.leave-fs-on libvpx-1.7.0/build/make/configure.sh

--- libvpx-1.7.0/build/make/configure.sh.leave-fs-on	2018-01-26 15:02:18.767645332 -0500

+++ libvpx-1.7.0/build/make/configure.sh	2018-01-26 15:02:28.594420775 -0500

@@ -1440,7 +1440,7 @@ EOF

   # Work around longjmp interception on glibc >= 2.11, to improve binary

   # compatibility. See http://code.google.com/p/webm/issues/detail?id=166

-  enabled linux && check_add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0

+  # enabled linux && check_add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0

   # Check for strip utility variant

   ${STRIP} -V 2>/dev/null | grep GNU >/dev/null && enable_feature gnu_strip