--- /var/db/paludis/gentoo/app-text/qpdf/qpdf-10.0.4.ebuild	2020-12-27 16:16:36.121800872 +0100
+++ qpdf-10.0.4.ebuild	2021-01-01 17:11:09.071788355 +0100
@@ -11,13 +11,15 @@
 # subslot = libqpdf soname version
 SLOT="0/28"
 KEYWORDS="~alpha amd64 arm arm64 ~hppa ~ia64 ~mips ppc ppc64 s390 sparc x86 ~amd64-linux ~x86-linux ~sparc-solaris"
-IUSE="doc examples libressl ssl test"
+IUSE="doc examples +gnutls libressl ssl test"
 RESTRICT="!test? ( test )"
 
 RDEPEND="
-	net-libs/gnutls:0=
 	sys-libs/zlib
 	virtual/jpeg:0=
+	gnutls? (
+		net-libs/gnutls:0=
+	)
 	ssl? (
 		!libressl? ( dev-libs/openssl:0= )
 		libressl? ( dev-libs/libressl:0= )
@@ -36,13 +38,19 @@
 src_configure() {
 	local myeconfargs=(
 		--disable-implicit-crypto
-		--enable-crypto-gnutls
 		--enable-crypto-native
-		--with-default-crypto=gnutls
 		--disable-static
+		$(use_enable gnutls crypto-gnutls)
 		$(use_enable ssl crypto-openssl)
 		$(use_enable test test-compare-images)
 	)
+	if use gnutls ; then
+		myeconfargs+=( --with-default-crypto=gnutls )
+	elif use ssl ; then
+		myeconfargs+=( --with-default-crypto=openssl )
+	else
+		myeconfargs+=( --with-default-crypto=native )
+	fi
 	CONFIG_SHELL="${BROOT}/bin/bash" econf "${myeconfargs[@]}"
 }