diff options
| -rwxr-xr-x | configure | 88 | ||||
| -rw-r--r-- | configure.ac | 46 |
2 files changed, 134 insertions, 0 deletions
@@ -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="$BASECFLAGS -Wunreachable-code" + fi + # if using gcc on alpha, use -mieee to get (near) full IEEE 754 # support. Without this, treatment of subnormals doesn't follow # the standard. diff --git a/configure.ac b/configure.ac index 3e8c49c..f396984 100644 --- a/configure.ac +++ b/configure.ac @@ -1234,6 +1234,52 @@ yes) BASECFLAGS="$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. |