--- syslog-ng-3.19.1/configure.orig	2019-02-15 12:23:58.939906817 -0500
+++ syslog-ng-3.19.1/configure	2019-02-15 12:39:30.435098013 -0500
@@ -19017,11 +19017,13 @@ $as_echo "$as_me: Too old java version r
 
     if test "$VERSION_OK" = "1";
     then
+      if -z "$JNI_HOME"; then
       if test -e "$JAVA_HOME_CHECKER"; then
         JNI_HOME=`$JAVA_HOME_CHECKER`
       else
         JNI_HOME=`echo $JAVAC_BIN | sed "s/\(.*\)[/]bin[/]java.*/\1\//"`
       fi
+      fi
 
       JNI_LIBDIR=`find $JNI_HOME \( -name "libjvm.so" -or -name "libjvm.dylib" \) \
         | sed "s-/libjvm\.so-/-" \
@@ -19124,11 +19126,13 @@ $as_echo "$as_me: Too old java version r
 
     if test "$VERSION_OK" = "1";
     then
+      if -z "$JNI_HOME"; then
       if test -e "$JAVA_HOME_CHECKER"; then
         JNI_HOME=`$JAVA_HOME_CHECKER`
       else
         JNI_HOME=`echo $JAVAC_BIN | sed "s/\(.*\)[/]bin[/]java.*/\1\//"`
       fi
+      fi
 
       JNI_LIBDIR=`find $JNI_HOME \( -name "libjvm.so" -or -name "libjvm.dylib" \) \
         | sed "s-/libjvm\.so-/-" \