From 3a65aad96243945260a584a998fe25a5cc5da44a Mon Sep 17 00:00:00 2001
From: NicJA <NicJA@fb15a70f-31f2-0310-bbcc-cdcc74a49acc>
Date: Tue, 29 Mar 2016 02:14:39 +0000
Subject: [PATCH] check for volatile-register-var as needed by m68k

git-svn-id: https://svn.aros.org/svn/aros/trunk/AROS@52338 fb15a70f-31f2-0310-bbcc-cdcc74a49acc
---
 features    | 29 +++++++++++++++++++++++++++++
 features.in | 10 ++++++++++
 2 files changed, 39 insertions(+)

diff --git a/features b/features
index 3bb122ddfa..c797e61828 100755
--- a/features
+++ b/features
@@ -584,6 +584,7 @@ PACKAGE_URL=
 ac_unique_file="mmakefile"
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
+aros_cflags_volatile_register_var
 aros_cflags_narrowing
 aros_cflags_conversion_null
 aros_cflags_missing_braces
@@ -2687,6 +2688,7 @@ $as_echo "$aros_targetcfg_dir" >&6; }
 #  -Wmissing-braces
 #  -Wconversion-null
 #  -Wnarrowing
+#  -Wvolatile-register-var
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} accepts -Wunused-but-set-variable" >&5
 $as_echo_n "checking whether ${CC} accepts -Wunused-but-set-variable... " >&6; }
@@ -3963,6 +3965,33 @@ if test "x-$aros_narrowing" = "x-yes" ; then
     aros_cflags_narrowing=-Wno-narrowing
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} accepts -Wvolatile-register-var" >&5
+$as_echo_n "checking whether ${CC} accepts -Wvolatile-register-var... " >&6; }
+CFLAGS=-Wvolatile-register-var
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  aros_volatile_register_var="yes"
+else
+  aros_volatile_register_var="no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $aros_volatile_register_var" >&5
+$as_echo "$aros_volatile_register_var" >&6; }
+if test "x-$aros_volatile_register_var" = "x-yes" ; then
+    aros_cflags_volatile_register_var=-Wno-volatile-register-var
+fi
+
+
 
 
 
diff --git a/features.in b/features.in
index f9123cfee6..f8462de50f 100644
--- a/features.in
+++ b/features.in
@@ -88,6 +88,7 @@ AC_MSG_RESULT($aros_targetcfg_dir)
 #  -Wmissing-braces
 #  -Wconversion-null
 #  -Wnarrowing
+#  -Wvolatile-register-var
 
 AC_MSG_CHECKING([whether ${CC} accepts -Wunused-but-set-variable])
 CFLAGS=-Wunused-but-set-variable
@@ -481,6 +482,14 @@ if test "x-$aros_narrowing" = "x-yes" ; then
     aros_cflags_narrowing=-Wno-narrowing
 fi
 
+AC_MSG_CHECKING([whether ${CC} accepts -Wvolatile-register-var])
+CFLAGS=-Wvolatile-register-var
+AC_TRY_COMPILE(,, aros_volatile_register_var="yes", aros_volatile_register_var="no")
+AC_MSG_RESULT($aros_volatile_register_var)
+if test "x-$aros_volatile_register_var" = "x-yes" ; then
+    aros_cflags_volatile_register_var=-Wno-volatile-register-var
+fi
+
 AC_SUBST(aros_cflags_unused_but_set_variable)
 AC_SUBST(aros_cflags_strict_aliasing)
 AC_SUBST(aros_cflags_array_bounds)
@@ -530,6 +539,7 @@ AC_SUBST(aros_cflags_unused_local_typedefs)
 AC_SUBST(aros_cflags_missing_braces)
 AC_SUBST(aros_cflags_conversion_null)
 AC_SUBST(aros_cflags_narrowing)
+AC_SUBST(aros_cflags_volatile_register_var)
 
 AC_CONFIG_FILES(
     ${aros_targetcfg_dir}/compiler.cfg:config/compiler.cfg.in
-- 
2.11.4.GIT