[sbeckwith@localhost pci_mem_acc]$ /usr/bin/gcc -lpci -v -L/lib64 -o pcix ./pci_mem_acc.c Using built-in specs. COLLECT_GCC=/usr/bin/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.9.2/lto-wrapper Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.9.2-20141101/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.9.2-20141101/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 4.9.2 20141101 (Red Hat 4.9.2-1) (GCC) COLLECT_GCC_OPTIONS='-v' '-L/lib64' '-o' 'pcix' '-mtune=generic' '-march=x86-64' /usr/libexec/gcc/x86_64-redhat-linux/4.9.2/cc1 -quiet -v ./pci_mem_acc.c -quiet -dumpbase pci_mem_acc.c -mtune=generic -march=x86-64 -auxbase pci_mem_acc -version -o /tmp/ccS01ijk.s GNU C (GCC) version 4.9.2 20141101 (Red Hat 4.9.2-1) (x86_64-redhat-linux) compiled by GNU C version 4.9.2 20141101 (Red Hat 4.9.2-1), GMP version 6.0.0, MPFR version 3.1.2, MPC version 1.0.2 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory "/usr/lib/gcc/x86_64-redhat-linux/4.9.2/include-fixed" ignoring nonexistent directory "/usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../x86_64-redhat-linux/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-redhat-linux/4.9.2/include /usr/local/include /usr/include End of search list. GNU C (GCC) version 4.9.2 20141101 (Red Hat 4.9.2-1) (x86_64-redhat-linux) compiled by GNU C version 4.9.2 20141101 (Red Hat 4.9.2-1), GMP version 6.0.0, MPFR version 3.1.2, MPC version 1.0.2 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 03cfec3867418ce243292e9ba51d447c COLLECT_GCC_OPTIONS='-v' '-L/lib64' '-o' 'pcix' '-mtune=generic' '-march=x86-64' as -v --64 -o /tmp/ccYee0ip.o /tmp/ccS01ijk.s GNU assembler version 2.24 (x86_64-redhat-linux) using BFD version version 2.24 COMPILER_PATH=/usr/libexec/gcc/x86_64-redhat-linux/4.9.2/:/usr/libexec/gcc/x86_64-redhat-linux/4.9.2/:/usr/libexec/gcc/x86_64-redhat-linux/:/usr/lib/gcc/x86_64-redhat-linux/4.9.2/:/usr/lib/gcc/x86_64-redhat-linux/ LIBRARY_PATH=/usr/lib/gcc/x86_64-redhat-linux/4.9.2/:/usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-v' '-L/lib64' '-o' 'pcix' '-mtune=generic' '-march=x86-64' /usr/libexec/gcc/x86_64-redhat-linux/4.9.2/collect2 -plugin /usr/libexec/gcc/x86_64-redhat-linux/4.9.2/liblto_plugin.so -plugin-opt=/usr/libexec/gcc/x86_64-redhat-linux/4.9.2/lto-wrapper -plugin-opt=-fresolution=/tmp/cc7qxFju.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --build-id --no-add-needed --eh-frame-hdr --hash-style=gnu -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o pcix /usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/crt1.o /usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/crti.o /usr/lib/gcc/x86_64-redhat-linux/4.9.2/crtbegin.o -L/lib64 -L/usr/lib/gcc/x86_64-redhat-linux/4.9.2 -L/usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../.. -lpci /tmp/ccYee0ip.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/gcc/x86_64-redhat-linux/4.9.2/crtend.o /usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/crtn.o /bin/ld: cannot find -lpci collect2: error: ld returned 1 exit status