bootstrap fails on Linux

[Emil Skoeldberg <esg%sdf.lonestar.org@localhost>]

I am trying to bootstrap pkgsrc (current) on a Linux computer (Slackware
13.). The bootstrap fails in pkg_install with the following errors:

=============

gcc -L/tmp/workdir/wrk/pkgtools/pkg_install/work/zlib 
-L/tmp/workdir/wrk/pkgtools/pkg_install/work/libarchive/.libs 
-L/tmp/workdir/wrk/pkgtools/pkg_install/work/libfetch 
-L/tmp/workdir/wrk/pkgtools/pkg_install/work/libnbcompat -L/usr/lib 
-Wl,-R/usr/lib -Wl,-R/usr/pkg/lib -L../lib -o pkg_add main.o perform.o 
-linstall -lfetch -larchive -lbz2 -lz -lcrypto -lnbcompat
/tmp/workdir/wrk/pkgtools/pkg_install/work/libarchive/.libs/libarchive.a(archive_read_support_compression_xz.o):
 In function `xz_lzma_bidder_init':
archive_read_support_compression_xz.c:(.text+0x56c): undefined reference to 
`lzma_stream_decoder'
archive_read_support_compression_xz.c:(.text+0x587): undefined reference to 
`lzma_alone_decoder'
/tmp/workdir/wrk/pkgtools/pkg_install/work/libarchive/.libs/libarchive.a(archive_read_support_compression_xz.o):
 In function `xz_filter_read':
archive_read_support_compression_xz.c:(.text+0x6d4): undefined reference to 
`lzma_code'
/tmp/workdir/wrk/pkgtools/pkg_install/work/libarchive/.libs/libarchive.a(archive_read_support_compression_xz.o):
 In function `xz_filter_close':
archive_read_support_compression_xz.c:(.text+0x8b0): undefined reference to 
`lzma_end'
collect2: ld returned 1 exit status
*** Error code 1

Stop.
bmake: stopped in 
/tmp/workdir/wrk/pkgtools/pkg_install/work/pkg_install-20100319/add
*** Error code 1

Stop.
bmake: stopped in 
/tmp/workdir/wrk/pkgtools/pkg_install/work/pkg_install-20100319
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/pkgtools/pkg_install
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/pkgtools/pkg_install
===> exited with status 1
aborted.

==========

Does anyone have a suggestion for a fix?

Emil

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