--- configure.orig	2020-11-26 18:20:44 UTC
+++ configure
@@ -83764,6 +83764,13 @@ $as_echo_n "checking for include file <jni.h>... " >&6
         JAVA_CPPFLAGS="-I${JAVA_HOME}/include -I${JAVA_HOME}/include/darwin"
       fi
     ;;
+    freebsd*)
+      if test -n "$JAVA_CPPFLAGS"; then
+        JAVA_CPPFLAGS="-I${JAVA_CPPFLAGS} -I${JAVA_CPPFLAGS}/freebsd"
+      else
+        JAVA_CPPFLAGS="-I${JAVA_HOME}/include -I${JAVA_HOME}/include/freebsd"
+      fi
+    ;;
     *)
       if test -n "$JAVA_CPPFLAGS"; then
         JAVA_CPPFLAGS="-I${JAVA_CPPFLAGS} -I${JAVA_CPPFLAGS}/linux"