re PR plugins/52872 (--enable-plugin; incorrect test for "exported symbols" and…

re PR plugins/52872 (--enable-plugin; incorrect test for "exported symbols" and "-rdynamic" in gcc/configure.ac)

        PR plugin/52862
        * configure.ac: Adding for exported symbols check
        and for rdynamic-check executable-extension.
        * configure: Regenerated.

Co-Authored-By: Kai Tietz <ktietz@redhat.com>

From-SVN: r204650

gcc/ChangeLog

+2013-11-10  Karlson2k  <k2k@narod.ru>
+            Kai Tietz  <ktietz@redhat.com>
+
+	PR plugin/52862
+	* configure.ac: Adding for exported symbols check
+	and for rdynamic-check executable-extension.
+	* configure: Regenerated.
+
 2013-11-10  Uros Bizjak  <ubizjak@gmail.com>
 
 	* mode-switching.c (optimize_mode_switching): Mark block as

gcc/configure

@@ -27570,8 +27570,8 @@ if test x"$enable_plugin" = x"yes"; then
 $as_echo_n "checking for exported symbols... " >&6; }
   if test "x$export_sym_check" != x; then
     echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
-    ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
-    if $export_sym_check conftest | grep foobar > /dev/null; then
+    ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
+    if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
       : # No need to use a flag
       { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
@@ -27580,8 +27580,8 @@ $as_echo "yes" >&6; }
 $as_echo "yes" >&6; }
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -rdynamic" >&5
 $as_echo_n "checking for -rdynamic... " >&6; }
-      ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
-      if $export_sym_check conftest | grep foobar > /dev/null; then
+      ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
+      if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
         plugin_rdynamic=yes
         pluginlibs="-rdynamic"
       else

gcc/configure.ac

@@ -5334,15 +5334,15 @@ if test x"$enable_plugin" = x"yes"; then
   AC_MSG_CHECKING([for exported symbols])
   if test "x$export_sym_check" != x; then
     echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
-    ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
-    if $export_sym_check conftest | grep foobar > /dev/null; then
+    ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
+    if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
       : # No need to use a flag
       AC_MSG_RESULT([yes])
     else
       AC_MSG_RESULT([yes])
       AC_MSG_CHECKING([for -rdynamic])
-      ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
-      if $export_sym_check conftest | grep foobar > /dev/null; then
+      ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
+      if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
         plugin_rdynamic=yes
         pluginlibs="-rdynamic"
       else