Alone7z does not build

[VictorEijkhout]

make[1]: Entering directory '/work/00434/eijkhout/p7zip/p7zip-git/CPP/7zip/Bundles/Alone7z'
mkdir -p _o/bin
mkdir -p _o/lib/7z_addon_codec
make -C ../../../../C/fast-lzma2
make[2]: Entering directory '/work/00434/eijkhout/p7zip/p7zip-git/C/fast-lzma2'
gcc -shared -pthread -Wl,-soname,libfast-lzma2.so.1 -o libfast-lzma2.so.1.0 range_enc.o fl2_pool.o radix_struct.o xxhash.o fl2_compress.o fl2_common.o lzma2_enc.o lzma2_dec.o radix_bitpack.o fl2_threading.o util.o dict_buffer.o fl2_decompress.o radix_mf.o lzma_dec_x86_64.o
make[2]: Leaving directory '/work/00434/eijkhout/p7zip/p7zip-git/C/fast-lzma2'
cp -drf ../../../../C/fast-lzma2/libfast-lzma2.a _o
cp: cannot stat '../../../../C/fast-lzma2/libfast-lzma2.a': No such file or directory
make[1]: *** [../../7zip_gcc.mak:1438: _o/libfast-lzma2.a] Error 1
make[1]: Leaving directory '/work/00434/eijkhout/p7zip/p7zip-git/CPP/7zip/Bundles/Alone7z'