>>> Unpacking source...
>>> Unpacking mbuffer-20070911.tgz to /var/tmp/portage/sys-block/mbuffer-20070911/work
 * Applying mbuffer-20070317-configure.patch ...
  [ ok ]
 * Applying mbuffer-20070317-mandir.patch ...
  [ ok ]
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/sys-block/mbuffer-20070911/work/mbuffer-20070911 ...
 * econf: updating mbuffer-20070911/config.sub with /usr/share/gnuconfig/config.sub
 * econf: updating mbuffer-20070911/config.guess with /usr/share/gnuconfig/config.guess
./configure --prefix=/usr --host=i686-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --enable-md5 --disable-debug --build=i686-pc-linux-gnu
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
checking target system type... i686-pc-linux-gnu
checking for i686-pc-linux-gnu-cc... no
checking for i686-pc-linux-gnu-gcc... i686-pc-linux-gnu-gcc
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-gcc accepts -g... yes
checking for i686-pc-linux-gnu-gcc option to accept ANSI C... none needed
checking for a BSD-compatible install... /usr/bin/install -c
checking for rm... /bin/rm
checking for pthread_attr_init in -lpthread... yes
checking for library containing sem_init... none required
checking for mt... /usr/sbin/mt
checking return type of signal handlers... void
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... 64
checking for _LARGE_FILES value needed for large files... no
checking for library containing socket... none required
checking for library containing gethostbyname... none required
checking for library containing hstrerror... none required
checking for library containing sendfile... none required
checking for library containing MD5_Init... -lcrypto
configure: creating ./config.status
config.status: creating Makefile
config.status: creating mbuffer.1
config.status: creating config.h
make -j14
i686-pc-linux-gnu-gcc -O2 -pipe -DHAVE_CONFIG_H   -c -o mbuffer.o mbuffer.c
mbuffer.c:33:3: warning: #warning Your sendfile implementation does not seem to support sending from buffers - disabling sendfile support.
i686-pc-linux-gnu-gcc -O2 -pipe -DHAVE_CONFIG_H -Wl,-O1 -lcrypto -lpthread  mbuffer.o -o mbuffer
mbuffer.o: In function `summary':
mbuffer.c:(.text+0xcb9): undefined reference to `MD5_Final'
mbuffer.o: In function `inputThread':
mbuffer.c:(.text+0x15be): undefined reference to `sem_post'
mbuffer.c:(.text+0x15d9): undefined reference to `sem_getvalue'
mbuffer.c:(.text+0x169b): undefined reference to `sem_getvalue'
mbuffer.c:(.text+0x16d4): undefined reference to `sem_wait'
mbuffer.c:(.text+0x17bc): undefined reference to `sem_post'
mbuffer.c:(.text+0x18cb): undefined reference to `MD5_Update'
mbuffer.c:(.text+0x1920): undefined reference to `sem_post'
mbuffer.c:(.text+0x19b8): undefined reference to `MD5_Update'
mbuffer.c:(.text+0x19ed): undefined reference to `pthread_cancel'
mbuffer.o: In function `outputThread':
mbuffer.c:(.text+0x1c73): undefined reference to `sem_getvalue'
mbuffer.c:(.text+0x1cd5): undefined reference to `sem_wait'
mbuffer.c:(.text+0x1db5): undefined reference to `sem_post'
mbuffer.c:(.text+0x1e23): undefined reference to `sem_getvalue'
mbuffer.c:(.text+0x1f30): undefined reference to `sem_post'
mbuffer.c:(.text+0x20d6): undefined reference to `sem_getvalue'
mbuffer.c:(.text+0x21af): undefined reference to `pthread_cancel'
mbuffer.o: In function `main':
mbuffer.c:(.text+0x2a59): undefined reference to `sem_init'
mbuffer.c:(.text+0x2a7c): undefined reference to `sem_init'
mbuffer.c:(.text+0x2bb1): undefined reference to `pthread_sigmask'
mbuffer.c:(.text+0x2bd2): undefined reference to `pthread_create'
mbuffer.c:(.text+0x2bfb): undefined reference to `pthread_create'
mbuffer.c:(.text+0x2c19): undefined reference to `pthread_sigmask'
mbuffer.c:(.text+0x2e28): undefined reference to `sem_getvalue'
mbuffer.c:(.text+0x37d6): undefined reference to `pthread_join'
mbuffer.c:(.text+0x37f1): undefined reference to `pthread_join'
mbuffer.c:(.text+0x3959): undefined reference to `pthread_join'
mbuffer.c:(.text+0x396a): undefined reference to `pthread_join'
mbuffer.c:(.text+0x3d63): undefined reference to `pthread_cancel'
mbuffer.c:(.text+0x3d70): undefined reference to `pthread_cancel'
mbuffer.c:(.text+0x4885): undefined reference to `MD5_Init'
collect2: ld returned 1 exit status
make: *** [mbuffer] Error 1
 * 
 * ERROR: sys-block/mbuffer-20070911 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 2626:  Called die
 * The specific snippet of code:
 *       emake || die "compile problem"
 *  The die message:
 *   compile problem
 * 
 * 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/sys-block/mbuffer-20070911:20081123-110406.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-block/mbuffer-20070911/temp/environment'.
 *