diff -Nur bin.old/goland.sh bin/goland.sh
--- bin.old/goland.sh	2017-11-18 23:10:04.629261859 +0200
+++ bin/goland.sh	2017-11-18 23:10:26.842364779 +0200
@@ -133,6 +133,15 @@
 fi
 
 JAVA_BIN="$JDK/bin/java"
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+    JDK=`java-config --jre-home`
+    JAVA_BIN="${JDK}/bin/java"
+  fi
+fi
+
 if [ -z "$JDK" -o ! -x "$JAVA_BIN" ]; then
   message "No JDK found. Please validate either GOLAND_JDK, JDK_HOME or JAVA_HOME environment variable points to valid JDK installation."
   exit 1