[rtems commit] Fix warnings for using C/ObjC specific GCC flags with C++

[Joel Sherrill]

Module:    rtems
Branch:    master
Commit:    14e5a0824be096def3da717f68eee85e64a7d0de
Changeset: http://git.rtems.org/rtems/commit/?id=14e5a0824be096def3da717f68eee85e64a7d0de

Author:    Joel Sherrill <joel at rtems.org>
Date:      Wed Oct 11 21:32:32 2017 -0500

Fix warnings for using C/ObjC specific GCC flags with C++

Closes #3181.

---

 c/src/aclocal/prog-cxx.m4      | 6 ++++++
 testsuites/aclocal/prog-cxx.m4 | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/c/src/aclocal/prog-cxx.m4 b/c/src/aclocal/prog-cxx.m4
index 66c986c..e0ae7b4 100644
--- a/c/src/aclocal/prog-cxx.m4
+++ b/c/src/aclocal/prog-cxx.m4
@@ -15,6 +15,12 @@ else
   CXXFLAGS=${CXXFLAGS-${CFLAGS}}
 fi
 
+CXXFLAGS=`echo ${CXXFLAGS} | sed \
+  -e s/-Wmissing-prototypes// \
+  -e s/-Wimplicit-function-declaration// \
+  -e s/-Wstrict-prototypes// \
+  -e s/-Wnested-externs//`
+
 RTEMS_CHECK_TOOL(CXX,g++)
 if test "$RTEMS_HAS_CPLUSPLUS" = "yes";
 then
diff --git a/testsuites/aclocal/prog-cxx.m4 b/testsuites/aclocal/prog-cxx.m4
index 91f2b7f..aac9c37 100644
--- a/testsuites/aclocal/prog-cxx.m4
+++ b/testsuites/aclocal/prog-cxx.m4
@@ -15,6 +15,12 @@ else
   CXXFLAGS=${CXXFLAGS-${CFLAGS}}
 fi
 
+CXXFLAGS=`echo ${CXXFLAGS} | sed \
+  -e s/-Wmissing-prototypes// \
+  -e s/-Wimplicit-function-declaration// \
+  -e s/-Wstrict-prototypes// \
+  -e s/-Wnested-externs//`
+
 RTEMS_CHECK_TOOL(CXX,g++)
 if test "$RTEMS_HAS_CPLUSPLUS" = "yes";
 then