--- /usr/portage/app-text/pdftk/pdftk-2.02.ebuild	2017-12-16 02:20:47.000000000 +0100
+++ pdftk-2.02.ebuild	2017-12-20 23:20:27.139925178 +0100
@@ -13,24 +13,31 @@
 SLOT="0"
 KEYWORDS="amd64 ~arm ppc x86 ~amd64-linux"
 
-RDEPEND="sys-devel/gcc:5.4.0[gcj]"
-DEPEND="${RDEPEND}
-	sys-devel/gcc-config
-"
+DEPEND="sys-devel/gcc:6.4.0[gcj]"
+RDEPEND="${DEPEND}"
 
 S="${WORKDIR}/${P}-dist/${PN}"
 
 src_prepare() {
 	epatch "${FILESDIR}"/${P}-flags.patch
+
+	export PATH="$(gcc-config -B 6.4.0):${PATH}"
+	host=$(gcj -dumpmachine)
+	gcj_ver=$(gcj -dumpversion)
+	gcc_ver=$(gcc -dumpversion)
+	sed -i.orig \
+	    -e "/CPP\|CXX/s@\$(VERSUFF)@-${gcc_ver}@" \
+	    -e "/GCJ\|GCJH/s@\$(VERSUFF)@-${gcj_ver}@" \
+	    -e "/LIBGCJ=/s@.*@export LIBGCJ=/usr/share/gcc-data/${host}/${gcc_ver}/java/libgcj-${gcj_ver}.jar@" \
+	    -e '/GJAR=/s/$(VERSUFF)//' \
+	    Makefile.Debian
 }
 
 src_compile() {
 	# Settings by java-config break compilation by gcj.
 	unset CLASSPATH
 	unset JAVA_HOME
-
-	# We need gcc-5 because of Java
-	export PATH="$(gcc-config -B 5.4.0):${PATH}"
+	export GCJFLAGS="${GCJFLAGS} -Wno-deprecated"
 
 	# Parallel make fails; confirmed, still not fixed in version 2.02.
 	emake -j1 -f "${S}"/Makefile.Debian || die "Compilation failed."