Сборка psi-0.11, не собирается qca-2.0.0-r2

Лог сборки следующий:

>>> Unpacking source...
>>> Unpacking qca-2.0.0.tar.bz2 to /var/tmp/portage/app-crypt/qca-2.0.0-r2/work
* Applying qca-2.0.0-debug-same-pkgconfig-file.patch ... [ ok ]
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/app-crypt/qca-2.0.0-r2/work/qca-2.0.0 ...
Configuring Qt Cryptographic Architecture (QCA) ...
Verifying Qt 4 build environment ... yacc.prf:27: Unknown replace function: escape_expand
yacc.prf:27: Unknown replace function: escape_expand
yacc.prf:27: Unknown replace function: escape_expand
yacc.prf:27: Unknown replace function: escape_expand
yacc.prf:38: Unknown replace function: escape_expand
lex.prf:19: Unknown replace function: escape_expand
lex.prf:19: Unknown replace function: escape_expand
lex.prf:19: Unknown replace function: escape_expand
./configure: line 1909: .qconftemp/conf: Нет такого файла или каталога
fail

Reason: Unexpected error launching 'conf'

*
* ERROR: app-crypt/qca-2.0.0-r2 failed.
* Call stack:
* ebuild.sh, line 49: Called src_compile
* environment, line 2487: Called die
* The specific snippet of code:
* ./configure --prefix=/usr --qtdir=/usr --includedir="/usr/include/qca2" --libdir="/usr/${_libdir}/qca2" --no-separate-debug-info --disable-tests ${myconf} || die "configure failed";
* The die message:
* configure failed
*
* If you need support, post the topmost build error, and the call stack if relevant.
* A complete build log is located at '/var/log/portage/app-crypt:qca-2.0.0-r2:20080321-075355.log'.
* The ebuild environment file is located at '/var/tmp/portage/app-crypt/qca-2.0.0-r2/temp/environment'.

Гугл ничего на эту тему не знает. Подскажите, куда смотреть.