--- nono/configure	2026/04/29 17:05:07	1.1.1.10
+++ nono/configure	2026/04/29 17:05:11	1.1.1.11
@@ -4299,6 +4299,7 @@ if ac_fn_c_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cc_has-Wcast-qual=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_C="${WARNFLAGS_C} -Wcast-qual"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4327,6 +4328,7 @@ if ac_fn_c_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cc_has-Wextra-semi=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_C="${WARNFLAGS_C} -Wextra-semi"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4355,6 +4357,7 @@ if ac_fn_c_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cc_has-Wlogical-op=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_C="${WARNFLAGS_C} -Wlogical-op"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4383,6 +4386,7 @@ if ac_fn_c_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cc_has-Wmissing-prototypes=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_C="${WARNFLAGS_C} -Wmissing-prototypes"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4411,6 +4415,7 @@ if ac_fn_c_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cc_has-Wmissing-variable-declarations=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_C="${WARNFLAGS_C} -Wmissing-variable-declarations"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4419,6 +4424,67 @@ fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 	CFLAGS="${old_CFLAGS}"
 
+# -Wshadow-local があればそっちを使う(gcc>=7)、なければ -Wshadow (clang)
+
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether cc accepts -Wshadow-local" >&5
+printf %s "checking whether cc accepts -Wshadow-local... " >&6; }
+	old_CFLAGS="${CFLAGS}"
+	CFLAGS="${CFLAGS} -Werror -Wshadow-local"
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+		eval `echo cc_has-Wshadow-local=yes | sed -e 's/-/_/g'`
+		WARNFLAGS_C="${WARNFLAGS_C} -Wshadow-local"
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+	CFLAGS="${old_CFLAGS}"
+
+if test x"${cc_has_Wshadow_local}" != xyes; then
+
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether cc accepts -Wshadow" >&5
+printf %s "checking whether cc accepts -Wshadow... " >&6; }
+	old_CFLAGS="${CFLAGS}"
+	CFLAGS="${CFLAGS} -Werror -Wshadow"
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+		eval `echo cc_has-Wshadow=yes | sed -e 's/-/_/g'`
+		WARNFLAGS_C="${WARNFLAGS_C} -Wshadow"
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+	CFLAGS="${old_CFLAGS}"
+
+fi
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -4456,6 +4522,7 @@ if ac_fn_cxx_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Wcast-qual=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Wcast-qual"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4484,6 +4551,7 @@ if ac_fn_cxx_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Wextra-semi=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Wextra-semi"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4512,6 +4580,7 @@ if ac_fn_cxx_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Winconsistent-missing-override=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Winconsistent-missing-override"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4540,6 +4609,7 @@ if ac_fn_cxx_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Winconsistent-missing-destructor-override=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Winconsistent-missing-destructor-override"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4568,6 +4638,7 @@ if ac_fn_cxx_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Wlogical-op=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Wlogical-op"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4596,6 +4667,7 @@ if ac_fn_cxx_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Wmissing-prototypes=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Wmissing-prototypes"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4624,6 +4696,7 @@ if ac_fn_cxx_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Wmissing-variable-declarations=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Wmissing-variable-declarations"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -4632,6 +4705,67 @@ fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 	CXXFLAGS="${old_CXXFLAGS}"
 
+# -Wshadow-local があればそっちを使う(gcc>=7)、なければ -Wshadow (clang)
+
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether c++ accepts -Wshadow-local" >&5
+printf %s "checking whether c++ accepts -Wshadow-local... " >&6; }
+	old_CXXFLAGS="${CXXFLAGS}"
+	CXXFLAGS="${CXXFLAGS} -Werror -Wshadow-local"
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Wshadow-local=yes | sed -e 's/-/_/g'`
+		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Wshadow-local"
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+	CXXFLAGS="${old_CXXFLAGS}"
+
+if test x"${cxx_has_Wshadow_local}" != xyes; then
+
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether c++ accepts -Wshadow" >&5
+printf %s "checking whether c++ accepts -Wshadow... " >&6; }
+	old_CXXFLAGS="${CXXFLAGS}"
+	CXXFLAGS="${CXXFLAGS} -Werror -Wshadow"
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Wshadow=yes | sed -e 's/-/_/g'`
+		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Wshadow"
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+	CXXFLAGS="${old_CXXFLAGS}"
+
+fi
 
 	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether c++ accepts -Wvla-extension" >&5
 printf %s "checking whether c++ accepts -Wvla-extension... " >&6; }
@@ -4652,6 +4786,7 @@ if ac_fn_cxx_try_compile "$LINENO"
 then :
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
+		eval `echo cxx_has-Wvla-extension=yes | sed -e 's/-/_/g'`
 		WARNFLAGS_CXX="${WARNFLAGS_CXX} -Wvla-extension"
 else $as_nop
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5