From e6a4ba53f06b1d84ca34976372d1f254562105d7 Mon Sep 17 00:00:00 2001
From: Ming-Hung Tsai <mingnus@gmail.com>
Date: Thu, 3 Jan 2019 17:59:42 +0800
Subject: [PATCH] [build] add options for gprof

---
 configure.ac | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index d2ac9ad..54bae31 100644
--- a/configure.ac
+++ b/configure.ac
@@ -112,7 +112,18 @@ AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [enable debugging]),
 AC_MSG_RESULT($DEBUG)
 
 if test x$DEBUG = xyes; then
-        CXXDEBUG_FLAG=-g
+        CXXDEBUG_FLAG+=" -g"
+fi
+
+################################################################################
+dnl -- Enable gprof
+AC_MSG_CHECKING(whether to enable gprof)
+AC_ARG_ENABLE(gprof, AC_HELP_STRING([--enable-gprof], [enable gprof]),
+              GPROF=$enableval, GPROF=no)
+AC_MSG_RESULT($GPROF)
+
+if test x$GPROF = xyes; then
+        CXXDEBUG_FLAG+=" -pg"
 fi
 
 ################################################################################