>Does adding –v option (verbose) to this line tell you anything helpful?

>(like the directories it is searching?  - or, more likely, not searching ;-)  )

Here it is. I don’t see anything useful in the verbose output. Do you?

mahmood@vb:AES$ g++ -v -fPIC -L/home/mahmood/boost_1_54_0/stage/lib -lboost_filesystem   -m64 -o /home/mahmood/gpgpu-sim_distribution/ispass2009-benchmarks/bin/release/AES   obj/x86_64/release/aescuda.cpp.o obj/x86_64/release/aesCudaUtils.cpp.o  obj/x86_64/release/aesHost.cu.o        -L/usr/local/cuda/lib64 -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../lib -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../common/lib/linux -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../../shared//lib -lcudart    -L/usr/local/cuda/lib64 -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../lib -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../common/lib/linux -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../../shared//lib -lcudart -lcutil_x86_64  -lshrutil_x86_64

Using built-in specs.

COLLECT_GCC=g++

COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6/lto-wrapper

Target: x86_64-linux-gnu

Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.3-1ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.6 --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++/4.6 --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 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)

COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/4.6/:/usr/lib/gcc/x86_64-linux-gnu/4.6/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/4.6/:/usr/lib/gcc/x86_64-linux-gnu/

LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/4.6/:/usr/lib/gcc/x86_64-linux-gnu/4.6/../../.../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../:/lib/:/usr/lib/

COLLECT_GCC_OPTIONS='-v' '-fPIC' '-L/home/mahmood/boost_1_54_0/stage/lib' '-m64' '-o' '/home/mahmood/gpgpu-sim_distribution/ispass2009-benchmarks/bin/release/AES' '-L/usr/local/cuda/lib64' '-L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../lib' '-L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../common/lib/linux' '-L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../../shared//lib' '-L/usr/local/cuda/lib64' '-L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../lib' '-L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../common/lib/linux' '-L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../../shared//lib' '-shared-libgcc' '-mtune=generic' '-march=x86-64'

/usr/lib/gcc/x86_64-linux-gnu/4.6/collect2 --sysroot=/ --build-id --no-add-needed --as-needed --eh-frame-hdr -m elf_x86_64 --hash-style=gnu -dynamic-linker /lib64/ld-linux-x86-64..so.2 -z relro -o /home/mahmood/gpgpu-sim_distribution/ispass2009-benchmarks/bin/release/AES /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/crt1.o /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/4.6/crtbegin.o -L/home/mahmood/boost_1_54_0/stage/lib -L/usr/local/cuda/lib64 -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../lib -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../common/lib/linux -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../../shared//lib -L/usr/local/cuda/lib64 -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../lib -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../common/lib/linux -L/home/mahmood/NVIDIA_GPU_Computing_SDK/C/src//../../shared//lib -L/usr/lib/gcc/x86_64-linux-gnu/4.6 -L/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.6/../../.. -lboost_filesystem obj/x86_64/release/aescuda.cpp.o obj/x86_64/release/aesCudaUtils.cpp.o obj/x86_64/release/aesHost.cu.o -lcudart -lcudart -lcutil_x86_64 -lshrutil_x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-linux-gnu/4.6/crtend.o /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/crtn.o

obj/x86_64/release/aescuda.cpp.o: In function `_GLOBAL__sub_I_aescuda.cpp':

aescuda.cpp:(.text.startup+0x68b): undefined reference to `boost::system::get_system_category()'

….

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