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Re: [Qemu-devel] [PATCH] configure: fix -enable-debug with newer toolcha
From: |
Eduardo Habkost |
Subject: |
Re: [Qemu-devel] [PATCH] configure: fix -enable-debug with newer toolchains |
Date: |
Tue, 12 Jun 2012 16:46:35 -0300 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Wed, Jun 06, 2012 at 12:03:18PM +0300, Avi Kivity wrote:
> Fedora 17's toolchain wants optimization enabled for _FORTIFY_SOURCE;
> so disable _FORTIFY_SOURCE when debugging.
>
> Signed-off-by: Avi Kivity <address@hidden>
I was bitten by this problem too. The patch fixes it for me.
Tested-by: Eduardo Habkost <address@hidden>
Reviewed-by: Eduardo Habkost <address@hidden>
The patch changes behavior a bit, by moving -D_FORTIFY_SOURCE to CFLAGS
instead of QEMU_CFLAGS, but it sounds like a good idea to keep the -O
option and -D_FORTIFY_SOURCE close together (anybody overriding/removing
-O on CFLAGS on the make command-line would need to take care of
-D_FORTIFY_SOURCE as well).
> ---
> configure | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/configure b/configure
> index 1f338f8..88d9c5b 100755
> --- a/configure
> +++ b/configure
> @@ -255,7 +255,6 @@ QEMU_CFLAGS="-fno-strict-aliasing $QEMU_CFLAGS"
> QEMU_CFLAGS="-Wall -Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
> QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
> QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
> $QEMU_CFLAGS"
> -QEMU_CFLAGS="-D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
> QEMU_INCLUDES="-I. -I\$(SRC_PATH) -I\$(SRC_PATH)/fpu"
> if test "$debug_info" = "yes"; then
> CFLAGS="-g $CFLAGS"
> @@ -2851,7 +2850,7 @@ fi
> # After here, no more $cc or $ld runs
>
> if test "$debug" = "no" ; then
> - CFLAGS="-O2 $CFLAGS"
> + CFLAGS="-O2 -D_FORTIFY_SOURCE=2 $CFLAGS"
> fi
>
> # Consult white-list to determine whether to enable werror
> --
> 1.7.10.1
>
--
Eduardo