x86_64-unknown-linux-gnu-gcc   -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE  -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wc++-compat   -DHAVE_CONFIG_H  -o cc1-dummy c-lang.o stub-objc.o attribs.o c-errors.o c-lex.o c-pragma.o c-decl.o c-typeck.o c-convert.o c-aux-info.o c-common.o c-opts.o c-format.o c-semantics.o c-ppoutput.o c-cppbuiltin.o c-objc-common.o c-dump.o c-pch.o c-parser.o  c-gimplify.o tree-mudflap.o c-pretty-print.o c-omp.o \
  dummy-checksum.o main.o  libbackend.a ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a ../libcpp/libcpp.a   ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a   -lppl_c -lppl -lgmpxx -L/home/sujith/dev/openwrt/staging_dir/host/lib -L/home/sujith/dev/openwrt/staging_dir/host/lib -L/home/sujith/dev/openwrt/staging_dir/host/lib -lmpc -lmpfr -lgmp -rdynamic -ldl  -L../zlib -lz
/usr/bin/ld: /home/sujith/dev/openwrt/staging_dir/host/lib/libgmpxx.a(ismpznw.o): undefined reference to symbol 'std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Rep::_M_destroy(std::allocator<char> const&)@@GLIBCXX_3.4'
/usr/bin/ld: note: 'std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Rep::_M_destroy(std::allocator<char> const&)@@GLIBCXX_3.4' is defined in DSO /usr/lib/libstdc++.so.6 so try adding it to the linker command line
/usr/lib/libstdc++.so.6: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
make[5]: *** [cc1-dummy] Error 1
make[5]: Leaving directory `/home/sujith/dev/openwrt/build_dir/toolchain-mips_r2_gcc-4.5-linaro_uClibc-0.9.32/gcc-linaro-4.5-2011.08-minimal/gcc'
make[4]: *** [all-gcc] Error 2
make[4]: Leaving directory `/home/sujith/dev/openwrt/build_dir/toolchain-mips_r2_gcc-4.5-linaro_uClibc-0.9.32/gcc-linaro-4.5-2011.08-minimal'
make[3]: *** [/home/sujith/dev/openwrt/build_dir/toolchain-mips_r2_gcc-4.5-linaro_uClibc-0.9.32/gcc-linaro-4.5-2011.08-minimal/.built] Error 2
make[3]: Leaving directory `/home/sujith/dev/openwrt/toolchain/gcc/minimal'
make[2]: *** [toolchain/gcc/minimal/compile] Error 2
make[2]: Leaving directory `/home/sujith/dev/openwrt'
make[1]: *** [/home/sujith/dev/openwrt/staging_dir/toolchain-mips_r2_gcc-4.5-linaro_uClibc-0.9.32/stamp/.toolchain_install] Error 2
make[1]: Leaving directory `/home/sujith/dev/openwrt'
make: *** [world] Error 2