On Tue, Mar 08, 2016 at 04:47:53PM +0000, James Hogan wrote:
> The ld-version.sh script fails on some versions of awk with the
> following error, resulting in build failures for MIPS:
>
> awk: scripts/ld-version.sh: line 4: regular expression compile failed (missing '(')
>
> This is due to the regular expression ".*)", meant to strip off the
> beginning of the ld version string up to the close bracket, however
> brackets have a meaning in regular expressions, so lets escape it so
> that awk doesn't expect a corresponding open bracket.
>
> Fixes: ccbef1674a15 ("Kbuild, lto: add ld-version and ld-ifversion ...")
> Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
> Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
> Cc: Michal Marek <mmarek@xxxxxxxx>
> Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
> Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
> Cc: linux-mips@xxxxxxxxxxxxxx
> Cc: linux-kbuild@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.4.x-
Tested-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> ---
> I've only tested this with GNU Awk 4.0.2, which seems a bit more
> lenient than whatever version of awk Geert's build machine is using.
>
> I'd appreciated if somebody experiencing the error could give this patch
> a spin to check it fixes it.
> ---
> scripts/ld-version.sh | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/ld-version.sh b/scripts/ld-version.sh
> index d154f0877fd8..7bfe9fa1c8dc 100755
> --- a/scripts/ld-version.sh
> +++ b/scripts/ld-version.sh
> @@ -1,7 +1,7 @@
> #!/usr/bin/awk -f
> # extract linker version number from stdin and turn into single number
> {
> - gsub(".*)", "");
> + gsub(".*\\)", "");
> gsub(".*version ", "");
> gsub("-.*", "");
> split($1,a, ".");
> --
> 2.4.10
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