--- a/configure Sat Mar 16 18:43:11 2019 +0100 +++ b/configure Sat Mar 16 18:51:02 2019 +0100 @@ -24,7 +24,7 @@ PRNGLIBS= CFLAGS="-fPIC -std=c99" -CFLAGS="$CFLAGS -Wall -pedantic" +CFLAGS="$CFLAGS -Wall -pedantic -Wextra -Wshadow -Wformat=2" LDFLAGS="-shared" IDN_LIBRARY="idn"