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Resolved compiler warning when compiling rAthena with clang++

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Jittapan Pluemsumran 2017-06-21 22:26:49 +07:00
parent 56201aead5
commit bd33f01e53
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GPG Key ID: D6CEC5C3A285CFFA
2 changed files with 193 additions and 190 deletions
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367
configure vendored
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@ -5501,182 +5501,6 @@ 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
{ $as_echo "$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_cxx_try_compile "$LINENO"; then :
# Recent versions of gcc don't fail if -Wno-foo is not recognized
# (unless there are also other warnings), so we also check for -Wfoo
# which always fails if not supported
CFLAGS="$OLD_CFLAGS -Werror -Wmaybe-uninitialized"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
CFLAGS="$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.$ac_ext
/* end confdefs.h. */
_ACEOF
if ac_fn_cxx_try_compile "$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="$OLD_CFLAGS -Werror -Wno-maybe-uninitialized"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
_ACEOF
if ac_fn_cxx_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"
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
{ $as_echo "$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_cxx_try_compile "$LINENO"; then :
# Recent versions of gcc don't fail if -Wno-foo is not recognized
# (unless there are also other warnings), so we also check for -Wfoo
# which always fails if not supported
CFLAGS="$OLD_CFLAGS -Werror -Wclobbered"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_cxx_try_compile "$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.$ac_ext
/* end confdefs.h. */
_ACEOF
if ac_fn_cxx_try_compile "$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="$OLD_CFLAGS -Werror -Wno-clobbered"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
_ACEOF
if ac_fn_cxx_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"
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
@ -5751,12 +5575,6 @@ fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
#AC_CHECK_COMPILER_WFLAG(newline-eof)
#AC_CHECK_COMPILER_WFLAG(int-conversion)
#AC_CHECK_COMPILER_WFLAG(enum-conversion)
#AC_CHECK_COMPILER_WFLAG(shorten-64-to-32)
#AC_CHECK_COMPILER_WFLAG(constant-conversion)
#AC_CHECK_COMPILER_WFLAG(bool-conversion)
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-switch" >&5
$as_echo_n "checking whether $CC supports -Wno-switch... " >&6; }
@ -5933,6 +5751,191 @@ fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether compiler is clang" >&5
$as_echo_n "checking whether compiler is clang... " >&6; }
if test -n "`$CC --version | grep -i clang`" ; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes, skipping some flags.." >&5
$as_echo "yes, skipping some flags.." >&6; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
{ $as_echo "$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_cxx_try_compile "$LINENO"; then :
# Recent versions of gcc don't fail if -Wno-foo is not recognized
# (unless there are also other warnings), so we also check for -Wfoo
# which always fails if not supported
CFLAGS="$OLD_CFLAGS -Werror -Wmaybe-uninitialized"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
CFLAGS="$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.$ac_ext
/* end confdefs.h. */
_ACEOF
if ac_fn_cxx_try_compile "$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="$OLD_CFLAGS -Werror -Wno-maybe-uninitialized"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
_ACEOF
if ac_fn_cxx_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"
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
{ $as_echo "$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_cxx_try_compile "$LINENO"; then :
# Recent versions of gcc don't fail if -Wno-foo is not recognized
# (unless there are also other warnings), so we also check for -Wfoo
# which always fails if not supported
CFLAGS="$OLD_CFLAGS -Werror -Wclobbered"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int foo;
_ACEOF
if ac_fn_cxx_try_compile "$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.$ac_ext
/* end confdefs.h. */
_ACEOF
if ac_fn_cxx_try_compile "$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="$OLD_CFLAGS -Werror -Wno-clobbered"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
_ACEOF
if ac_fn_cxx_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"
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
fi
# Certain versions of gcc make -Wshadow completely useless by making it flood
# you with unnecessary warnings <https://lkml.org/lkml/2006/11/28/239>

16
configure.in
View File

@ -697,17 +697,17 @@ AC_DEFUN(AC_CHECK_COMPILER_WNOFLAG,
)
AC_CHECK_COMPILER_WNOFLAG(unused-parameter, [int foo(int bar) { return 0; }])
AC_CHECK_COMPILER_WNOFLAG(maybe-uninitialized)
AC_CHECK_COMPILER_WNOFLAG(clobbered)
AC_CHECK_COMPILER_WFLAG(empty-body)
#AC_CHECK_COMPILER_WFLAG(newline-eof)
#AC_CHECK_COMPILER_WFLAG(int-conversion)
#AC_CHECK_COMPILER_WFLAG(enum-conversion)
#AC_CHECK_COMPILER_WFLAG(shorten-64-to-32)
#AC_CHECK_COMPILER_WFLAG(constant-conversion)
#AC_CHECK_COMPILER_WFLAG(bool-conversion)
AC_CHECK_COMPILER_WNOFLAG(switch)
AC_CHECK_COMPILER_WNOFLAG(missing-field-initializers)
AC_MSG_CHECKING([whether compiler is clang])
if test -n "`$CC --version | grep -i clang`" ; then
AC_MSG_RESULT([yes, skipping some flags..])
else
AC_MSG_RESULT([no])
AC_CHECK_COMPILER_WNOFLAG(maybe-uninitialized)
AC_CHECK_COMPILER_WNOFLAG(clobbered)
fi
# Certain versions of gcc make -Wshadow completely useless by making it flood
# you with unnecessary warnings <https://lkml.org/lkml/2006/11/28/239>