Hello There While trying to build gcc 4.4.6 I keep hitting few errors . My configure option sare Stage 1 : AR=ar ${SOURCES_GCC}/configure \ --prefix=${CLFS_CROSS_TOOLS} \ --target=${CLFS_TARGET} --disable-nls --enable-shared=libstdc++ --without-headers --with-newlib --disable-decimal-float --disable-libmudflap --disable-libgomp --disable-threads --enable-languages=c --enable-checking=release Stage 2 AR=ar ${SOURCES_GCC}/configure \ --prefix=${CLFS_CROSS_TOOLS} \ --target=${CLFS_TARGET} --with-sysroot=${CLFS} --disable-nls -enable-shared --enable-__cxa_atexit --enable-long-long --enable-threads=posix --enable-c99 --enable-languages=c,c++,objc,obj-c++,java --enable-checking=release CLFS_TARGET=x86_64-unknown-linux-gnu CLFS=/local/gagupta/gccfolder CLFS_SOURCES=/local/gagupta/gccfolder/crosscompile NAME_BINUTILS=binutils SOURCES_BINUTILS=$CLFS_SOURCES/binutils-2.20.51.0.2 CLFS_CROSS_TOOLS=$CLFS/cross-tools CLFS_TOOLS=$CLFS/tools NAME_GCC=gcc SOURCES_GCC=$CLFS_SOURCES/gcc-4.4.6-20120305 NAME_GLIBC=glibc SOURCES_GLIBC=$CLFS_SOURCES/glibc-2.12-2-gc4ccff1 SOURCES_LINUX=$CLFS_SOURCES/linux-2.6.32-279.9.1.el6 PATH=/local/gagupta/gccfolder:/local/gagupta/gccfolder/usr:/local/gagupta/gccfolder/tools:$CLFS_CROSS_TOOLS/bin:$PATH LC_ALL=POSIX 1. /local/gagupta/gccfolder/crosscompile/gcc-4.4.6-20120305/libgcc/../gcc/tsystem.h:87:19: error: stdio.h: No such file or directory .Please note that my path Variable has sysroot set that contains the header files . 2. some time errors related to checking for suffix of object files... configure: error: in `/local/gagupta/gccfolder/crosscompile/gcc-build/x86_64-unknown-linux-gnu/libgcc': configure: error: cannot compute suffix of object files: cannot compile See `config.log' for more details. make[2]: *** [configure-stage1-target-libgcc] Error 1 3. some time local/gagupta/gccfolder/crosscompile/gcc-4.4.6-20120305/libiberty/strsignal.c:554: error: conflicting types for 'psignal' /usr/include/signal.h:141: note: previous declaration of 'psignal' was here make[2]: *** [strsignal.o] Error 1 4. some time error related to libstd++v3 not found Thanks Gaurav