can't cd to ${WRKSRC}

[César Catrián Carreño <ccatrian%eml.cc@localhost>]

I am writing a package for the nightly build of ffmpeg. The problem is that
in a post-extract stage, can't cd to ${WRKDIR}. This is the error message:

$ make configure
=> Required installed package digest>=20010302: digest-20060826 found
===> Checking for vulnerabilities in ffmpeg-snapshot-20061211
=> Checksum SHA1 OK for ffmpeg-export-snapshot.tar.bz2
=> Checksum RMD160 OK for ffmpeg-export-snapshot.tar.bz2
===> Installing dependencies for ffmpeg-snapshot-20061211
=> Required installed package gmake>=3.78: gmake-3.81 found
===> Overriding tools for ffmpeg-snapshot-20061211
===> Extracting for ffmpeg-snapshot-20061211
cd 
/home/src/pkgsrc/wip/ffmpeg-snapshot.import/work.core/ffmpeg-export-2006-12-11
make: exec(cd) failed (No such file or directory)
*** Error code 1


This is the Makefile; is not finished.


$ cat Makefile
# $NetBSD$
#

DISTNAME=       ffmpeg-export-snapshot
PKGNAME=        ffmpeg-snapshot-${VERSION}
CATEGORIES=     multimedia
MASTER_SITES=   http://ffmpeg.mplayerhq.hu/
EXTRACT_SUFX=   .tar.bz2

.include "../../mk/bsd.prefs.mk"
VERSION!=       ${DATE} +%Y%m%d
DATEDIR!=       ${DATE} +%Y-%m-%d

MAINTAINER=     ccatrian%eml.cc@localhost
HOMEPAGE=       http://ffmpeg.mplayerhq.hu/
COMMENT=        Nightly snapshot of the ffmpeg tool

WRKSRC=         ${WRKDIR}/ffmpeg-export-${DATEDIR}
HAS_CONFIGURE=  yes

CONFIGURE_ARGS+=        --enable-memalign-hack
CONFIGURE_ARGS+=        --cpu=i686

USE_LANGUAGES=  c c++
USE_TOOLS+=     gmake

post-extract:
        cd ${WRKSRC}

.include "../../mk/bsd.pkg.mk"


Please help.

--
César Catrián Carreño

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