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Issue #22110: Enable extra compilation warnings.

This commit is contained in:
Charles-François Natali 2014-08-01 21:57:49 +01:00
parent 30575c7363
commit 7f9cc9359b
2 changed files with 134 additions and 0 deletions
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88
configure vendored
View File

@ -6510,6 +6510,94 @@ $as_echo "$ac_cv_declaration_after_statement_warning" >&6; }
BASECFLAGS="$BASECFLAGS -Werror=declaration-after-statement"
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can turn on $CC mixed sign comparison warning" >&5
$as_echo_n "checking if we can turn on $CC mixed sign comparison warning... " >&6; }
ac_save_cc="$CC"
CC="$CC -Wsign-compare"
save_CFLAGS="$CFLAGS"
if ${ac_cv_enable_sign_compare_warning+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
ac_cv_enable_sign_compare_warning=yes
else
ac_cv_enable_sign_compare_warning=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
CFLAGS="$save_CFLAGS"
CC="$ac_save_cc"
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_sign_compare_warning" >&5
$as_echo "$ac_cv_enable_sign_compare_warning" >&6; }
if test $ac_cv_enable_sign_compare_warning = yes
then
BASECFLAGS="$BASECFLAGS -Wsign-compare"
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can turn on $CC unreachable code warning" >&5
$as_echo_n "checking if we can turn on $CC unreachable code warning... " >&6; }
ac_save_cc="$CC"
CC="$CC -Wunreachable-code"
save_CFLAGS="$CFLAGS"
if ${ac_cv_enable_unreachable_code_warning+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
ac_cv_enable_unreachable_code_warning=yes
else
ac_cv_enable_unreachable_code_warning=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
CFLAGS="$save_CFLAGS"
CC="$ac_save_cc"
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_unreachable_code_warning" >&5
$as_echo "$ac_cv_enable_unreachable_code_warning" >&6; }
# Don't enable unreachable code warning in debug mode, since it usually
# results in non-standard code paths.
if test $ac_cv_enable_unreachable_code_warning = yes && test "$Py_DEBUG" != "true"
then
BASECFLAGS="$BASECFLAGS -Wunreachable-code"
fi
# if using gcc on alpha, use -mieee to get (near) full IEEE 754
# support. Without this, treatment of subnormals doesn't follow
# the standard.

46
configure.ac
View File

@ -1234,6 +1234,52 @@ yes)
BASECFLAGS="$BASECFLAGS -Werror=declaration-after-statement"
fi
AC_MSG_CHECKING(if we can turn on $CC mixed sign comparison warning)
ac_save_cc="$CC"
CC="$CC -Wsign-compare"
save_CFLAGS="$CFLAGS"
AC_CACHE_VAL(ac_cv_enable_sign_compare_warning,
AC_COMPILE_IFELSE(
[
AC_LANG_PROGRAM([[]], [[]])
],[
ac_cv_enable_sign_compare_warning=yes
],[
ac_cv_enable_sign_compare_warning=no
]))
CFLAGS="$save_CFLAGS"
CC="$ac_save_cc"
AC_MSG_RESULT($ac_cv_enable_sign_compare_warning)
if test $ac_cv_enable_sign_compare_warning = yes
then
BASECFLAGS="$BASECFLAGS -Wsign-compare"
fi
AC_MSG_CHECKING(if we can turn on $CC unreachable code warning)
ac_save_cc="$CC"
CC="$CC -Wunreachable-code"
save_CFLAGS="$CFLAGS"
AC_CACHE_VAL(ac_cv_enable_unreachable_code_warning,
AC_COMPILE_IFELSE(
[
AC_LANG_PROGRAM([[]], [[]])
],[
ac_cv_enable_unreachable_code_warning=yes
],[
ac_cv_enable_unreachable_code_warning=no
]))
CFLAGS="$save_CFLAGS"
CC="$ac_save_cc"
AC_MSG_RESULT($ac_cv_enable_unreachable_code_warning)
# Don't enable unreachable code warning in debug mode, since it usually
# results in non-standard code paths.
if test $ac_cv_enable_unreachable_code_warning = yes && test "$Py_DEBUG" != "true"
then
BASECFLAGS="$BASECFLAGS -Wunreachable-code"
fi
# if using gcc on alpha, use -mieee to get (near) full IEEE 754
# support. Without this, treatment of subnormals doesn't follow
# the standard.