1 files changed, 43 insertions, 0 deletions
diff --git a/src/m4/ax_vpp_find_jdk8.m4 b/src/m4/ax_vpp_find_jdk8.m4
new file mode 100644
index 00000000..382a6c80
--- /dev/null
+++ b/src/m4/ax_vpp_find_jdk8.m4
@@ -0,0 +1,43 @@
+
+
+AC_DEFUN([AX_VPP_FIND_JDK8],
+[
+while true
+do
+  if test "${JAVA_HOME+set}" = set ; then
+    AC_MSG_CHECKING([${JAVA_HOME} for Java 8 compiler])
+    JAVAC=${JAVA_HOME}/bin/javac
+    JAVAH=${JAVA_HOME}/bin/javah
+    JAR=${JAVA_HOME}/bin/jar
+    JAVA_VERSION=$(${JAVA_HOME}/bin/javac -source 8 -version 2>&1)
+    if test 0 -eq "$?"; then
+      JAVA_VERSION=$(echo "${JAVA_VERSION}" | cut -d\  -f2)
+      AC_MSG_RESULT([ok])
+    else
+      AC_MSG_RESULT([no])
+      AC_MSG_ERROR([Java in ${JAVA_HOME} (path specified in JAVA_HOME) cannot compile Java 8 code])
+    fi
+    break
+  fi
+
+  for dir in $(find /usr/lib/jvm/* -maxdepth 0 -type d); do
+    AC_MSG_CHECKING([${dir} for Java 8 compiler])
+    JAVA_VERSION=$(${dir}/bin/javac -source 8 -version 2>&1)
+    if test 0 -eq "$?"; then
+      JAVA_VERSION=$(echo "${JAVA_VERSION}" | cut -d\  -f2)
+      JAVA_HOME=${dir}
+      JAVAC=${dir}/bin/javac
+      JAVAH=${dir}/bin/javah
+      JAR=${dir}/bin/jar
+      AC_MSG_RESULT([found version $JAVA_VERSION])
+      break
+    else
+      JAVA_VERSION=""
+      AC_MSG_RESULT([no])
+    fi
+  done
+
+  test "${JAVA_HOME}set" = set && AC_MSG_ERROR([Could not find Java 8 compiler])
+  break
+done
+])