hi, I'm trying to cross compile gcc-4.1.0 for mipsel platform.Following is the sequence of commands which i'm using.My host system is i686. ../gcc-4.1.0/configure --target=mipsel --without-headres --prefix=/home/shahzad/install/ --with-newlib --enable-languages=c make But following error is generated /home/shahzad/mips_gcc/./gcc/xgcc -B/home/shahzad/mips_gcc/./gcc/ -B/home/shahzad/install//mipsel/bin/ -B/home/shahzad/install//mipsel/lib/ -isystem /home/shahzad/install//mipsel/include -isystem /home/shahzad/install//mipsel/sys-include -DHAVE_CONFIG_H -I. -I../../../gcc-4.1.0/libssp -I. -Wall -O2 -g -O2 -MT ssp.lo -MD -MP -MF .deps/ssp.Tpo -c ../../../gcc-4.1.0/libssp/ssp.c -o ssp.o ../../../gcc-4.1.0/libssp/ssp.c:46:20: error: fcntl.h: No such file or directory ../../../gcc-4.1.0/libssp/ssp.c: In function '__guard_setup': ../../../gcc-4.1.0/libssp/ssp.c:70: warning: implicit declaration of function 'open' ../../../gcc-4.1.0/libssp/ssp.c:70: error: 'O_RDONLY' undeclared (first use in this function) ../../../gcc-4.1.0/libssp/ssp.c:70: error: (Each undeclared identifier is reported only once ../../../gcc-4.1.0/libssp/ssp.c:70: error: for each function it appears in.) ../../../gcc-4.1.0/libssp/ssp.c:73: error: 'ssize_t' undeclared (first use in this function) ../../../gcc-4.1.0/libssp/ssp.c:73: error: expected ';' before 'size' ......................................... ........................................ I'm using fedora 5 as development platform and version of gcc installed on system is 4.1.0 thanks, shahzad