Only add -woff 3970 to C[XX]FLAGS when using SGI mipsPro 7.4.4 or later.

Previous mipsPro versions don't give this warning but do warn about "unknown
warning number 3970" if we use this -woff which is even more annoying than
original warning we tried to suppress.

This is a forward port of r45896 which somehow was only applied to 2.8 branch.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63584 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

configure

@@ -24691,10 +24691,142 @@ if test "x$SUNCC" = xyes; then
 fi
 
 if test "x$SGICC" = "xyes"; then
-    CFLAGS="-woff 3970 $CFLAGS"
+    { echo "$as_me:$LINENO: checking if cc version is 7.4.4 or greater" >&5
+echo $ECHO_N "checking if cc version is 7.4.4 or greater... $ECHO_C" >&6; }
+if test "${wx_cv_prog_sgicc744+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+            cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+                    #if _SGI_COMPILER_VERSION >= 744
+                    chock me: mipsPro is 7.4.4 or later
+                    #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  wx_cv_prog_sgicc744=no
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	wx_cv_prog_sgicc744=yes
+
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+fi
+{ echo "$as_me:$LINENO: result: $wx_cv_prog_sgicc744" >&5
+echo "${ECHO_T}$wx_cv_prog_sgicc744" >&6; }
+
+    if test "x$wx_cv_prog_sgicc744" = "xyes"; then
+        CFLAGS="-woff 3970 $CFLAGS"
+    fi
 fi
 if test "x$SGICXX" = "xyes"; then
-    CXXFLAGS="-woff 3970 $CXXFLAGS"
+    { echo "$as_me:$LINENO: checking if CC version is 7.4.4 or greater" >&5
+echo $ECHO_N "checking if CC version is 7.4.4 or greater... $ECHO_C" >&6; }
+if test "${wx_cv_prog_sgicxx744+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+            ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+            cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+                    #if _SGI_COMPILER_VERSION >= 744
+                    chock me: mipsPro is 7.4.4 or later
+                    #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  wx_cv_prog_sgicxx744=no
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	wx_cv_prog_sgicxx744=yes
+
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+            ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+fi
+{ echo "$as_me:$LINENO: result: $wx_cv_prog_sgicxx744" >&5
+echo "${ECHO_T}$wx_cv_prog_sgicxx744" >&6; }
+
+    if test "x$wx_cv_prog_sgicxx744" = "xyes"; then
+        CXXFLAGS="-woff 3970 $CXXFLAGS"
+    fi
 fi
 
 if test "x$HPCC" = "xyes"; then

configure.in

@@ -1827,18 +1827,57 @@ if test "x$SUNCC" = xyes; then
     CFLAGS="-erroff=E_NO_EXPLICIT_TYPE_GIVEN $CFLAGS"
 fi
 
-dnl SGI mipsPro compiler gives this warning for "conversion from pointer to
+dnl SGI mipsPro compiler version 7.4.4 and later (and maybe some earlier
-dnl same-sized integral type" even when there is an explicit cast and as there
+dnl versions too but it's known that 7.4.2 doesn't give this warning but does
-dnl is no way to turn it off and there are hundreds of these warnings in wx
+dnl instead warn about "unknown warning number 3970" which explains that we
-dnl sources, just turn it off for now
+dnl don't want to do this for it) gives this warning for "conversion from
+dnl pointer to same-sized integral type" even when there is an explicit cast
+dnl and as there is no way to turn it off and there are hundreds of these
+dnl warnings in wx sources, just turn it off for now
 dnl
 dnl a better long term solution would be to use #pragma set/reset woff in
 dnl wxPtrToUInt() and use it instead of casts elsewhere
 if test "x$SGICC" = "xyes"; then
-    CFLAGS="-woff 3970 $CFLAGS"
+    AC_CACHE_CHECK([if cc version is 7.4.4 or greater],
+        wx_cv_prog_sgicc744,
+        [
+            AC_TRY_COMPILE([],
+                [
+                    #if _SGI_COMPILER_VERSION >= 744
+                    chock me: mipsPro is 7.4.4 or later
+                    #endif
+                ],
+                wx_cv_prog_sgicc744=no,
+                wx_cv_prog_sgicc744=yes
+            )
+        ]
+    )
+
+    if test "x$wx_cv_prog_sgicc744" = "xyes"; then
+        CFLAGS="-woff 3970 $CFLAGS"
+    fi
 fi
 if test "x$SGICXX" = "xyes"; then
-    CXXFLAGS="-woff 3970 $CXXFLAGS"
+    AC_CACHE_CHECK([if CC version is 7.4.4 or greater],
+        wx_cv_prog_sgicxx744,
+        [
+            AC_LANG_PUSH(C++)
+            AC_TRY_COMPILE([],
+                [
+                    #if _SGI_COMPILER_VERSION >= 744
+                    chock me: mipsPro is 7.4.4 or later
+                    #endif
+                ],
+                wx_cv_prog_sgicxx744=no,
+                wx_cv_prog_sgicxx744=yes
+            )
+            AC_LANG_POP()
+        ]
+    )
+
+    if test "x$wx_cv_prog_sgicxx744" = "xyes"; then
+        CXXFLAGS="-woff 3970 $CXXFLAGS"
+    fi
 fi
 
 dnl HP-UX c89/aCC compiler warnings