In order to suppress the warning
src/Makefile.am:117: warning: '%'-style pattern rules are a GNU make extension
[intel-vaapi-driver],
[https://github.com/01org/intel-vaapi-driver])
AC_CONFIG_SRCDIR([Makefile.am])
[intel-vaapi-driver],
[https://github.com/01org/intel-vaapi-driver])
AC_CONFIG_SRCDIR([Makefile.am])
-AM_INIT_AUTOMAKE([1.9 tar-ustar])
+AM_INIT_AUTOMAKE([1.9 tar-ustar -Wno-portability])
AC_CONFIG_HEADERS([src/config.h])
AC_CONFIG_HEADERS([src/config.h])