>>> Unpacking source...
>>> Unpacking libdecodeqr-0.9.3.tar.bz2 to /var/tmp/portage/media-libs/libdecodeqr-0.9.3/work
 [32;01m*[0m Applying libdecodeqr-0.9.3-makefile.patch ...
[A[162C  [34;01m[ [32;01mok[34;01m ][0m
>>> Source unpacked in /var/tmp/portage/media-libs/libdecodeqr-0.9.3/work
>>> Compiling source in /var/tmp/portage/media-libs/libdecodeqr-0.9.3/work/libdecodeqr-0.9.3/src ...
./configure --prefix=/usr --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib LDFLAGS= -O1
configure: loading site script /usr/share/config.site
configure: loading site script /usr/share/crossdev/include/site/linux
checking for i686-pc-linux-gnu-g++... i686-pc-linux-gnu-g++
checking for C++ compiler default output file name... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether i686-pc-linux-gnu-g++ accepts -g... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking for i686-pc-linux-gnu-ar... i686-pc-linux-gnu-ar
checking for i686-pc-linux-gnu-ld... i686-pc-linux-gnu-ld
checking for i686-pc-linux-gnu-ln... no
checking for ln... ln
checking for cvCreateImage in -lcv... no

If your system already has OpenCV, append place of the libcv.la
to your LDFLAGS environment variables. eg,

LDFLAGS="$LDFLAGS -L/usr/local/opencv/lib";export LDFLAGS

configure: error: libcv.la not found.

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/media-libs/libdecodeqr-0.9.3/work/libdecodeqr-0.9.3/src/config.log
 [31;01m*[0m 
 [31;01m*[0m ERROR: media-libs/libdecodeqr-0.9.3 failed.
 [31;01m*[0m Call stack:
 [31;01m*[0m               ebuild.sh, line   49:  Called src_compile
 [31;01m*[0m             environment, line 2694:  Called econf 'LDFLAGS= -O1'
 [31;01m*[0m               ebuild.sh, line  534:  Called die
 [31;01m*[0m The specific snippet of code:
 [31;01m*[0m   			die "econf failed"
 [31;01m*[0m  The die message:
 [31;01m*[0m   econf failed
 [31;01m*[0m 
 [31;01m*[0m If you need support, post the topmost build error, and the call stack if relevant.
 [31;01m*[0m A complete build log is located at '/var/log/portage/media-libs/libdecodeqr-0.9.3:20090809-210821.log'.
 [31;01m*[0m The ebuild environment file is located at '/var/tmp/portage/media-libs/libdecodeqr-0.9.3/temp/environment'.
 [31;01m*[0m