re PR bootstrap/50857 (The compiler is built with exceptions and RTTI enabled)

libcpp/
	PR bootstrap/50857
	* configure.ac: Check for -fno-exceptions -fno-rtti.
	* configure: Regenerate.
	* Makefile.in (NOEXCEPTION_FLAGS): New flag.
	(ALL_CXXFLAGS): Use it.

gcc/
	PR bootstrap/50857
	* configure.ac: Check for -fno-exceptions -fno-rtti.
	* configure: Regenerate.
	* Makefile.in (NOEXCEPTION_FLAGS): New flag.
	(ALL_CXXFLAGS): Use it.

From-SVN: r180833

4 files changed, 60 insertions, 4 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 539551a..086fcaa 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2011-11-03  Michael Matz  <matz@suse.de>
+
+	PR bootstrap/50857
+	* configure.ac: Check for -fno-exceptions -fno-rtti.
+	* configure: Regenerate.
+	* Makefile.in (NOEXCEPTION_FLAGS): New flag.
+	(ALL_CXXFLAGS): Use it.
+
 2011-11-03  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md: Use {} for multi-line preparation statements.
@@ -45,7 +53,7 @@
 	known_current_type and multiple_types_encountered.
 	(extr_type_from_vtbl_ptr_store): New function.
 	(check_stmt_for_type_change): Use it, set multiple_types_encountered if
-        the result is different from the previous one.
+	the result is different from the previous one.
 	(detect_type_change): Renamed to detect_type_change_1. New parameter
 	comp_type.  Set up new fields in tci, build known type jump
 	functions if the new type can be identified.
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 229e8c1..0ca81ad 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -164,6 +164,8 @@ C_STRICT_WARN = @c_strict_warn@
 # "extern" tags in header files.
 NOCOMMON_FLAG = @nocommon_flag@
 
+NOEXCEPTION_FLAGS = @noexception_flags@
+
 # This is set by --disable-maintainer-mode (default) to "#"
 # FIXME: 'MAINT' will always be set to an empty string, no matter if
 # --disable-maintainer-mode is used or not.  This is because the
@@ -974,7 +976,7 @@ ALL_CFLAGS = $(T_CFLAGS) $(CFLAGS-$@) \
 
 # The C++ version.
 ALL_CXXFLAGS = $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS) $(INTERNAL_CFLAGS) \
-  $(COVERAGE_FLAGS) $(WARN_CXXFLAGS) @DEFS@
+  $(COVERAGE_FLAGS) $(NOEXCEPTION_FLAGS) $(WARN_CXXFLAGS) @DEFS@
 
 # Likewise.  Put INCLUDES at the beginning: this way, if some autoconf macro
 # puts -I options in CPPFLAGS, our include files in the srcdir will always
diff --git a/gcc/configure b/gcc/configure
index 35dbdd8..99334ce 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -771,6 +771,7 @@ valgrind_path_defines
 valgrind_path
 TREEBROWSER
 nocommon_flag
+noexception_flags
 warn_cxxflags
 warn_cflags
 c_strict_warn
@@ -6613,6 +6614,47 @@ fi
 
 
 
+# Disable exceptions and RTTI if building with g++
+noexception_flags=
+save_CFLAGS="$CFLAGS"
+for option in -fno-exceptions -fno-rtti; do
+  as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports $option" >&5
+$as_echo_n "checking whether $CC supports $option... " >&6; }
+if { as_var=$as_acx_Woption; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+else
+  CFLAGS="$option"
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$as_acx_Woption=yes"
+else
+  eval "$as_acx_Woption=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+eval ac_res=\$$as_acx_Woption
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  if test `eval 'as_val=${'$as_acx_Woption'};$as_echo "$as_val"'` = yes; then :
+  noexception_flags="$noexception_flags${noexception_flags:+ }$option"
+fi
+  done
+CFLAGS="$save_CFLAGS"
+
+
 # Enable expensive internal checks
 is_release=
 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
@@ -18045,7 +18087,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 18047 "configure"
+#line 18090 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -18151,7 +18193,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 18153 "configure"
+#line 18196 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 9196996..c765425 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -358,6 +358,10 @@ fi
 AC_SUBST(warn_cflags)
 AC_SUBST(warn_cxxflags)
 
+# Disable exceptions and RTTI if building with g++
+ACX_PROG_CC_WARNING_OPTS(
+	m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
+	
 # Enable expensive internal checks
 is_release=
 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then