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-rwxr-xr-xconfigure819
1 files changed, 679 insertions, 140 deletions
diff --git a/configure b/configure
index 28c9f9361..7142ed479 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
#! /bin/sh
-# From configure.in 547ee9a.
+# From configure.in d0f16b7.
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.69.
#
@@ -3643,12 +3643,12 @@ fi
# Check whether --enable-lto was given.
if test "${enable_lto+set}" = set; then :
enableval=$enable_lto;
- enable_lto="$enableval"
- case $enableval in
- "no");;
- "yes");;
- *) as_fn_error $? "invalid argument --enable-lto=$disableval... stopping" "$LINENO" 5;;
- esac
+ enable_lto="$enableval"
+ case $enableval in
+ "no");;
+ "yes");;
+ *) as_fn_error $? "invalid argument --enable-lto=$disableval... stopping" "$LINENO" 5;;
+ esac
else
enable_lto="yes"
@@ -4924,28 +4924,6 @@ fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-unused-parameter" >&5
-$as_echo_n "checking whether $CC supports -Wno-unused-parameter... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-unused-parameter"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-int foo;
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
-
-
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-
#
# LTO Support test
#
@@ -4970,8 +4948,8 @@ else
/* end confdefs.h. */
int main(int argc, char **argv){
- return 0;
- }
+ return 0;
+ }
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
@@ -4994,320 +4972,881 @@ fi
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-maybe-uninitialized" >&5
-$as_echo_n "checking whether $CC supports -Wno-maybe-uninitialized... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-maybe-uninitialized"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-unused-parameter" >&5
+$as_echo_n "checking whether $CC supports -Wno-unused-parameter... " >&6; }
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wno-unused-parameter"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-maybe-uninitialized" >&5
-$as_echo_n "checking whether $CC can actually use -Wno-maybe-uninitialized... " >&6; }
- # Note: -Werror must be before -Wno-maybe-uninitialized, otherwise it does not do anything
- CFLAGS="$OLD_CFLAGS -Werror -Wno-maybe-uninitialized"
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ # Recent versions of gcc don't fail if -Wno-foo is not recognized
+ # (unless there are also other warnings), so we also check for -Wfoo
+ # which always fails if not supported
+ CFLAGS="$OLD_CFLAGS -Werror -Wunused-parameter"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
- CFLAGS="$OLD_CFLAGS -Wno-maybe-uninitialized"
+ CFLAGS="$OLD_CFLAGS -Wno-unused-parameter"
+ # Optionally, run a test
+ if test "xint foo(int bar) { return 0; }" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-unused-parameter" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-unused-parameter... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wunused-parameter"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int foo(int bar) { return 0; }
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+ CFLAGS="$OLD_CFLAGS"
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ CFLAGS="$OLD_CFLAGS -Werror -Wno-unused-parameter"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int foo(int bar) { return 0; }
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wno-unused-parameter"
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+else
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-clobbered" >&5
-$as_echo_n "checking whether $CC supports -Wno-clobbered... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-clobbered"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-maybe-uninitialized" >&5
+$as_echo_n "checking whether $CC supports -Wno-maybe-uninitialized... " >&6; }
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wno-maybe-uninitialized"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-clobbered" >&5
-$as_echo_n "checking whether $CC can actually use -Wno-clobbered... " >&6; }
- # Note: -Werror must be before -Wno-clobbered, otherwise it does not do anything
- CFLAGS="$OLD_CFLAGS -Werror -Wno-clobbered"
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ # Recent versions of gcc don't fail if -Wno-foo is not recognized
+ # (unless there are also other warnings), so we also check for -Wfoo
+ # which always fails if not supported
+ CFLAGS="$OLD_CFLAGS -Werror -Wmaybe-uninitialized"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
- CFLAGS="$OLD_CFLAGS -Wno-clobbered"
+ CFLAGS="$OLD_CFLAGS -Wno-maybe-uninitialized"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-maybe-uninitialized" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-maybe-uninitialized... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wmaybe-uninitialized"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+ CFLAGS="$OLD_CFLAGS"
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ CFLAGS="$OLD_CFLAGS -Werror -Wno-maybe-uninitialized"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wno-maybe-uninitialized"
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+else
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wempty-body" >&5
-$as_echo_n "checking whether $CC supports -Wempty-body... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wempty-body"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-clobbered" >&5
+$as_echo_n "checking whether $CC supports -Wno-clobbered... " >&6; }
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wno-clobbered"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ # Recent versions of gcc don't fail if -Wno-foo is not recognized
+ # (unless there are also other warnings), so we also check for -Wfoo
+ # which always fails if not supported
+ CFLAGS="$OLD_CFLAGS -Werror -Wclobbered"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wno-clobbered"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-clobbered" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-clobbered... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wclobbered"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ CFLAGS="$OLD_CFLAGS -Werror -Wno-clobbered"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wno-clobbered"
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wnewline-eof" >&5
-$as_echo_n "checking whether $CC supports -Wnewline-eof... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wnewline-eof"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wempty-body" >&5
+$as_echo_n "checking whether $CC supports -Wempty-body... " >&6; }
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wempty-body"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wempty-body"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wempty-body" >&5
+$as_echo_n "checking whether $CC can actually use -Wempty-body... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wempty-body"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wempty-body"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wshadow" >&5
-$as_echo_n "checking whether $CC supports -Wshadow... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wshadow"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wnewline-eof" >&5
+$as_echo_n "checking whether $CC supports -Wnewline-eof... " >&6; }
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wnewline-eof"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wnewline-eof"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wnewline-eof" >&5
+$as_echo_n "checking whether $CC can actually use -Wnewline-eof... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wnewline-eof"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wnewline-eof"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wint-conversion" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wint-conversion" >&5
$as_echo_n "checking whether $CC supports -Wint-conversion... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wenum-conversion"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wint-conversion"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wint-conversion"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wint-conversion" >&5
+$as_echo_n "checking whether $CC can actually use -Wint-conversion... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wint-conversion"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wint-conversion"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wenum-conversion" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wenum-conversion" >&5
$as_echo_n "checking whether $CC supports -Wenum-conversion... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wenum-conversion"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wenum-conversion"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wenum-conversion"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wenum-conversion" >&5
+$as_echo_n "checking whether $CC can actually use -Wenum-conversion... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wenum-conversion"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wenum-conversion"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wshorten-64-to-32" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wshorten-64-to-32" >&5
$as_echo_n "checking whether $CC supports -Wshorten-64-to-32... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wshorten-64-to-32"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wshorten-64-to-32"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wshorten-64-to-32"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wshorten-64-to-32" >&5
+$as_echo_n "checking whether $CC can actually use -Wshorten-64-to-32... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wshorten-64-to-32"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wshorten-64-to-32"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wconstant-conversion" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wconstant-conversion" >&5
$as_echo_n "checking whether $CC supports -Wconstant-conversion... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wconstant-conversion"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wconstant-conversion"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wconstant-conversion"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wconstant-conversion" >&5
+$as_echo_n "checking whether $CC can actually use -Wconstant-conversion... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wconstant-conversion"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wconstant-conversion"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wbool-conversion" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wbool-conversion" >&5
$as_echo_n "checking whether $CC supports -Wbool-conversion... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wbool-conversion"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wbool-conversion"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wbool-conversion"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wbool-conversion" >&5
+$as_echo_n "checking whether $CC can actually use -Wbool-conversion... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wbool-conversion"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wbool-conversion"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-switch" >&5
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-switch" >&5
$as_echo_n "checking whether $CC supports -Wno-switch... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-switch"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wno-switch"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ # Recent versions of gcc don't fail if -Wno-foo is not recognized
+ # (unless there are also other warnings), so we also check for -Wfoo
+ # which always fails if not supported
+ CFLAGS="$OLD_CFLAGS -Werror -Wswitch"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wno-switch"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-switch" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-switch... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wswitch"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+else
+
+ CFLAGS="$OLD_CFLAGS -Werror -Wno-switch"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wno-switch"
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-missing-field-initializers" >&5
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-missing-field-initializers" >&5
$as_echo_n "checking whether $CC supports -Wno-missing-field-initializers... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-missing-field-initializers"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wno-missing-field-initializers"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+ # Recent versions of gcc don't fail if -Wno-foo is not recognized
+ # (unless there are also other warnings), so we also check for -Wfoo
+ # which always fails if not supported
+ CFLAGS="$OLD_CFLAGS -Werror -Wmissing-field-initializers"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wno-missing-field-initializers"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-missing-field-initializers" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-missing-field-initializers... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wmissing-field-initializers"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+else
+
+ CFLAGS="$OLD_CFLAGS -Werror -Wno-missing-field-initializers"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wno-missing-field-initializers"
+
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
- CFLAGS="$OLD_CFLAGS"
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+# Certain versions of gcc make -Wshadow completely useless by making it flood
+# you with unnecessary warnings <https://lkml.org/lkml/2006/11/28/239>
+# Let's check if we can really use it
+SAVED_OLD_CFLAGS="$CFLAGS"
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wshadow" >&5
+$as_echo_n "checking whether $CC supports -Wshadow... " >&6; }
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wshadow"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wshadow"
+ # Optionally, run a test
+ if test "x" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wshadow" >&5
+$as_echo_n "checking whether $CC can actually use -Wshadow... " >&6; }
+ CFLAGS="$OLD_CFLAGS -Werror -Wshadow"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$OLD_CFLAGS -Wshadow"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ fi
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$OLD_CFLAGS"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+if test "x$CFLAGS" != "x$SAVED_OLD_CFLAGS"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can efficiently use -Wshadow" >&5
+$as_echo_n "checking whether $CC can efficiently use -Wshadow... " >&6; }
+ NEW_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wshadow"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+ int foo(void) {
+ return 0;
+ }
+ int bar(void) {
+ int foo = 0;
+ return foo + 1;
+ }
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ CFLAGS="$NEW_CFLAGS"
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ CFLAGS="$SAVED_OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -fPIC" >&5
$as_echo_n "checking whether $CC supports -fPIC... " >&6; }
OLD_CFLAGS="$CFLAGS"