From 9d3a51625fabe49184537863eb07e964028b6b03 Mon Sep 17 00:00:00 2001
From: Alex Lin <alexander.s.lin@nasa.gov>
Date: Thu, 12 May 2016 14:42:23 -0500
Subject: [PATCH] Allow --with-gtest argument with no directory

Added the option to not provide a directory name when using
--with-gtest

refs #237
---
 autoconf/configure.ac |  8 +++++---
 configure             | 15 +++++++++++++--
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 554bc1b5..9b27630a 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -96,11 +96,13 @@ AC_DEFUN([AX_GTEST_HOME],[
     AC_ARG_WITH([gtest],
                 AS_HELP_STRING([--with-gtest@<:@=DIR@:>@], [GTEST root directory]),
                 [GTEST_HOME="$withval"
-                 AC_CHECK_FILE([$GTEST_HOME/include/gtest],
+                 AS_IF([test "$GTEST_HOME" = "yes"],
+                  AC_CHECK_HEADER(gtest/gtest.h,[GTEST_HOME="/usr"],AC_MSG_ERROR([could not find gtest/gtest.h])),
+                  AC_CHECK_FILE([$GTEST_HOME/include/gtest],
                                [],
-                               AC_MSG_ERROR([could not find $GTEST_HOME/sample/bcuser.h])
+                               AC_MSG_ERROR([could not find $GTEST_HOME/include/gtest])
                               )
-                ],
+                )],
                 [GTEST_HOME=""]
                )
     AC_SUBST([GTEST_HOME])
diff --git a/configure b/configure
index 868b3085..ceb503a6 100755
--- a/configure
+++ b/configure
@@ -6062,7 +6062,17 @@ fi
 # Check whether --with-gtest was given.
 if test "${with_gtest+set}" = set; then :
   withval=$with_gtest; GTEST_HOME="$withval"
-                 as_ac_File=`$as_echo "ac_cv_file_$GTEST_HOME/include/gtest" | $as_tr_sh`
+                 if test "$GTEST_HOME" = "yes"; then :
+  ac_fn_cxx_check_header_mongrel "$LINENO" "gtest/gtest.h" "ac_cv_header_gtest_gtest_h" "$ac_includes_default"
+if test "x$ac_cv_header_gtest_gtest_h" = xyes; then :
+  GTEST_HOME="/usr"
+else
+  as_fn_error $? "could not find gtest/gtest.h" "$LINENO" 5
+fi
+
+
+else
+  as_ac_File=`$as_echo "ac_cv_file_$GTEST_HOME/include/gtest" | $as_tr_sh`
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $GTEST_HOME/include/gtest" >&5
 $as_echo_n "checking for $GTEST_HOME/include/gtest... " >&6; }
 if eval \${$as_ac_File+:} false; then :
@@ -6082,11 +6092,12 @@ $as_echo "$ac_res" >&6; }
 if eval test \"x\$"$as_ac_File"\" = x"yes"; then :
 
 else
-  as_fn_error $? "could not find $GTEST_HOME/sample/bcuser.h" "$LINENO" 5
+  as_fn_error $? "could not find $GTEST_HOME/include/gtest" "$LINENO" 5
 
 fi
 
 
+fi
 else
   GTEST_HOME=""