gcc49 install issuse

/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/./prev-gcc/xg++ -B/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/./prev-gcc/ -B/usr/x86_64-pc-linux-gnu/bin/ -nostdinc++ -B/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs -B/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs  -I/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu  -I/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/prev-x86_64-pc-linux-gnu/libstdc++-v3/include  -I/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-4.9.4/libstdc++-v3/libsupc++ -L/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs -L/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs   -g -O2 -DIN_GCC    -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H -static-libstdc++ -static-libgcc  -o cc1obj \
      objc/objc-lang.o objc/objc-act.o hash-table.o objc/objc-runtime-shared-support.o objc/objc-gnu-runtime-abi-01.o objc/objc-next-runtime-abi-01.o objc/objc-next-runtime-abi-02.o objc/objc-encoding.o objc/objc-map.o attribs.o c/c-errors.o c/c-decl.o c/c-typeck.o c/c-convert.o c/c-aux-info.o c/c-objc-common.o c/c-parser.o c/c-array-notation.o c-family/c-common.o c-family/c-cppbuiltin.o c-family/c-dump.o c-family/c-format.o c-family/c-gimplify.o c-family/c-lex.o c-family/c-omp.o c-family/c-opts.o c-family/c-pch.o c-family/c-ppoutput.o c-family/c-pragma.o c-family/c-pretty-print.o c-family/c-semantics.o c-family/c-ada-spec.o c-family/c-cilkplus.o c-family/array-notation-common.o c-family/cilk.o c-family/c-ubsan.o i386-c.o glibc-c.o cc1obj-checksum.o \
      libbackend.a main.o  libcommon-target.a libcommon.a ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a libcommon.a ../libcpp/libcpp.a   ../libbacktrace/.libs/libbacktrace.a ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a  -L/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/./cloog/.libs  -lcloog-isl -L/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/./isl/.libs  -lisl -lmpc -lmpfr -lgmp -rdynamic -ldl  -lz
collect2: error: ld returned 1 exit status
make[3]: *** [/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-4.9.4/gcc/objc/Make-lang.in:66: cc1obj] Error 1
make[3]: Leaving directory '/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build/gcc'
make[2]: *** [Makefile:4306: all-stage3-gcc] Error 2
make[2]: Leaving directory '/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build'
make[1]: *** [Makefile:21907: stage3-bubble] Error 2
make[1]: Leaving directory '/tmp/yaourt-tmp-blambin/aur-gcc49/src/gcc-build'
make: *** [Makefile:894: all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...
==> ERROR: Makepkg was unable to build gcc49.
==> Restart building gcc49 ? [y/N]
==> ------------------------------
==>