Hello I got the following build errors on my linux box building version 1.53.0 gcc.compile.c++ bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/cpplexer/re2clex/aq.o gcc.compile.c++ bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/cpplexer/re2clex/cpp_re.o gcc.archive bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/libboost_wave.a common.copy /home/yadav/dev/cpp/boost_1.53.0/lib/libboost_wave.a ...failed updating 56 targets... ...skipped 6 targets... ...updated 10989 targets... Linux version is: uname -a Linux karma 3.5.0-23-generic #35-Ubuntu SMP Thu Jan 24 13:15:40 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux GCC Version gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.7.2-2ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs --enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.7 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.7 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1) Thanks!