>>> Unpacking source...
>>> Unpacking blktrace-1.0.0.tar.bz2 to /var/tmp/portage/sys-block/btrace-1.0.0/work
 * Applying btfoo.patch ...
  [ ok ]
>>> Source unpacked.
>>> Configuring source in /var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace ...
make -j3 CC=x86_64-pc-linux-gnu-gcc 'CFLAGS=-march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace' 
x86_64-pc-linux-gnu-gcc -o blkparse.o -c -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 blkparse.c
x86_64-pc-linux-gnu-gcc -o blkparse_fmt.o -c -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 blkparse_fmt.c
x86_64-pc-linux-gnu-gcc -o rbtree.o -c -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 rbtree.c
x86_64-pc-linux-gnu-gcc -o act_mask.o -c -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 act_mask.c
x86_64-pc-linux-gnu-gcc -o blktrace.o -c -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 blktrace.c
x86_64-pc-linux-gnu-gcc -o verify_blkparse.o -c -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 verify_blkparse.c
x86_64-pc-linux-gnu-gcc -o blkrawverify.o -c -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 blkrawverify.c
x86_64-pc-linux-gnu-gcc -o blkiomon.o -c -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 blkiomon.c
make -C btt
make[1]: Entering directory `/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace/btt'
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o args.o args.c
make -C btreplay
make[1]: Entering directory `/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace/btreplay'
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -I../btt -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -UCOUNT_IOS -UDEBUG -DNDEBUG -c -o btrecord.o btrecord.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -I../btt -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -UCOUNT_IOS -UDEBUG -DNDEBUG -c -o btreplay.o btreplay.c
make -C btreplay
make[1]: Entering directory `/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace/btreplay'
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -I../btt -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -UCOUNT_IOS -UDEBUG -DNDEBUG -o btrecord btrecord.o
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -I../btt -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -UCOUNT_IOS -UDEBUG -DNDEBUG -o btreplay btreplay.o -laio -lrt
/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/../../../x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -I../btt -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -UCOUNT_IOS -UDEBUG -DNDEBUG -o btrecord btrecord.o
../lib64/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: ld returned 1 exit status
make[1]: *** [btreplay] Error 1
make[1]: Leaving directory `/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace/btreplay'
make: *** [btreplay/btreplay] Error 2
make: *** Waiting for unfinished jobs....
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o bt_timeline.o bt_timeline.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -I../btt -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -UCOUNT_IOS -UDEBUG -DNDEBUG -o btreplay btreplay.o -laio -lrt
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o devmap.o devmap.c
make[1]: Leaving directory `/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace/btreplay'
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o devs.o devs.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o dip_rb.o dip_rb.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o iostat.o iostat.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o latency.o latency.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o misc.o misc.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o output.o output.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o proc.o proc.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o seek.o seek.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o trace.o trace.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o trace_complete.o trace_complete.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o trace_im.o trace_im.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o trace_issue.o trace_issue.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o trace_queue.o trace_queue.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o trace_remap.o trace_remap.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o trace_requeue.o trace_requeue.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o mmap.o mmap.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o trace_plug.o trace_plug.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o bno_dump.o bno_dump.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o unplug_hist.o unplug_hist.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o q2d.o q2d.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o aqd.o aqd.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -c -o plat.o plat.c
x86_64-pc-linux-gnu-gcc -march=nocona -O2 -pipe -DLVM_REMAP_WORKAROUND -W -I/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace -I. -I.. -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -o btt args.o bt_timeline.o devmap.o devs.o dip_rb.o iostat.o latency.o misc.o output.o proc.o seek.o trace.o trace_complete.o trace_im.o trace_issue.o trace_queue.o trace_remap.o trace_requeue.o ../rbtree.o mmap.o trace_plug.o bno_dump.o unplug_hist.o q2d.o aqd.o plat.o  
make[1]: Leaving directory `/var/tmp/portage/sys-block/btrace-1.0.0/work/blktrace/btt'
 * 
 * ERROR: sys-block/btrace-1.0.0 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 2468:  Called die
 * The specific snippet of code:
 *       emake CC="$(tc-getCC)" CFLAGS="${CFLAGS}" || die "emake failed";
 *  The die message:
 *   emake 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/sys-block:btrace-1.0.0:20081219-003757.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-block/btrace-1.0.0/temp/environment'.
 * This ebuild is from an overlay: '/usr/local/portage/local/'
 *