configure: Use -Winit-self if possible.
This protects against variable initialization like "int x = x". gcc apparently treats this as an intentional way to suppress uninitialized or unused variable warnings, but in my case it has caused at least one confusing bug. Signed-off-by: Zebediah Figura <z.figura12@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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@ -9981,6 +9981,37 @@ fi
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$as_echo "$ac_cv_crosscflags__Wignored_qualifiers" >&6; }
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$as_echo "$ac_cv_crosscflags__Wignored_qualifiers" >&6; }
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if test "x$ac_cv_crosscflags__Wignored_qualifiers" = xyes; then :
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if test "x$ac_cv_crosscflags__Wignored_qualifiers" = xyes; then :
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EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Wignored-qualifiers"
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EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Wignored-qualifiers"
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the cross-compiler supports -Winit-self" >&5
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$as_echo_n "checking whether the cross-compiler supports -Winit-self... " >&6; }
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if ${ac_cv_crosscflags__Winit_self+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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ac_wine_try_cflags_saved=$CFLAGS
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ac_wine_try_cflags_saved_cc=$CC
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ac_wine_try_cflags_saved_exeext=$ac_exeext
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CFLAGS="$CFLAGS $EXTRACROSSCFLAGS -nostartfiles -nodefaultlibs -Winit-self"
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CC="$CROSSCC"
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ac_exeext=".exe"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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int __cdecl mainCRTStartup(void) { return 0; }
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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ac_cv_crosscflags__Winit_self=yes
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else
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ac_cv_crosscflags__Winit_self=no
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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CFLAGS=$ac_wine_try_cflags_saved
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CC=$ac_wine_try_cflags_saved_cc
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ac_exeext=$ac_wine_try_cflags_saved_exeext
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_crosscflags__Winit_self" >&5
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$as_echo "$ac_cv_crosscflags__Winit_self" >&6; }
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if test "x$ac_cv_crosscflags__Winit_self" = xyes; then :
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EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Winit-self"
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fi
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the cross-compiler supports -Wpacked-not-aligned" >&5
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the cross-compiler supports -Wpacked-not-aligned" >&5
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$as_echo_n "checking whether the cross-compiler supports -Wpacked-not-aligned... " >&6; }
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$as_echo_n "checking whether the cross-compiler supports -Wpacked-not-aligned... " >&6; }
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@ -17193,6 +17224,31 @@ fi
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$as_echo "$ac_cv_cflags__Wignored_qualifiers" >&6; }
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$as_echo "$ac_cv_cflags__Wignored_qualifiers" >&6; }
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if test "x$ac_cv_cflags__Wignored_qualifiers" = xyes; then :
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if test "x$ac_cv_cflags__Wignored_qualifiers" = xyes; then :
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EXTRACFLAGS="$EXTRACFLAGS -Wignored-qualifiers"
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EXTRACFLAGS="$EXTRACFLAGS -Wignored-qualifiers"
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Winit-self" >&5
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$as_echo_n "checking whether the compiler supports -Winit-self... " >&6; }
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if ${ac_cv_cflags__Winit_self+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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ac_wine_try_cflags_saved=$CFLAGS
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CFLAGS="$CFLAGS -Winit-self"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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int main(int argc, char **argv) { return 0; }
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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ac_cv_cflags__Winit_self=yes
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else
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ac_cv_cflags__Winit_self=no
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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CFLAGS=$ac_wine_try_cflags_saved
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cflags__Winit_self" >&5
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$as_echo "$ac_cv_cflags__Winit_self" >&6; }
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if test "x$ac_cv_cflags__Winit_self" = xyes; then :
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EXTRACFLAGS="$EXTRACFLAGS -Winit-self"
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fi
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wpacked-not-aligned" >&5
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wpacked-not-aligned" >&5
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$as_echo_n "checking whether the compiler supports -Wpacked-not-aligned... " >&6; }
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$as_echo_n "checking whether the compiler supports -Wpacked-not-aligned... " >&6; }
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@ -1044,6 +1044,7 @@ then
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WINE_TRY_CROSSCFLAGS([-Wdeclaration-after-statement])
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WINE_TRY_CROSSCFLAGS([-Wdeclaration-after-statement])
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WINE_TRY_CROSSCFLAGS([-Wempty-body])
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WINE_TRY_CROSSCFLAGS([-Wempty-body])
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WINE_TRY_CROSSCFLAGS([-Wignored-qualifiers])
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WINE_TRY_CROSSCFLAGS([-Wignored-qualifiers])
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WINE_TRY_CROSSCFLAGS([-Winit-self])
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WINE_TRY_CROSSCFLAGS([-Wpacked-not-aligned],[EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Wno-packed-not-aligned"])
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WINE_TRY_CROSSCFLAGS([-Wpacked-not-aligned],[EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Wno-packed-not-aligned"])
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WINE_TRY_CROSSCFLAGS([-Wpragma-pack],[EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Wno-pragma-pack"])
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WINE_TRY_CROSSCFLAGS([-Wpragma-pack],[EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Wno-pragma-pack"])
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WINE_TRY_CROSSCFLAGS([-Wshift-overflow=2])
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WINE_TRY_CROSSCFLAGS([-Wshift-overflow=2])
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@ -2024,6 +2025,7 @@ then
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WINE_TRY_CFLAGS([-Wdeclaration-after-statement])
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WINE_TRY_CFLAGS([-Wdeclaration-after-statement])
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WINE_TRY_CFLAGS([-Wempty-body])
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WINE_TRY_CFLAGS([-Wempty-body])
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WINE_TRY_CFLAGS([-Wignored-qualifiers])
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WINE_TRY_CFLAGS([-Wignored-qualifiers])
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WINE_TRY_CFLAGS([-Winit-self])
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WINE_TRY_CFLAGS([-Wpacked-not-aligned],[EXTRACFLAGS="$EXTRACFLAGS -Wno-packed-not-aligned"])
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WINE_TRY_CFLAGS([-Wpacked-not-aligned],[EXTRACFLAGS="$EXTRACFLAGS -Wno-packed-not-aligned"])
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WINE_TRY_CFLAGS([-Wpragma-pack],[EXTRACFLAGS="$EXTRACFLAGS -Wno-pragma-pack"])
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WINE_TRY_CFLAGS([-Wpragma-pack],[EXTRACFLAGS="$EXTRACFLAGS -Wno-pragma-pack"])
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WINE_TRY_CFLAGS([-Wshift-overflow=2])
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WINE_TRY_CFLAGS([-Wshift-overflow=2])
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