hello: I tried to build tic6x cross compiler in recent days, but always fail. this is my building step: cd build-binutils/ ../binutils-2.22/configure --prefix=/usr/local/tic6x/ --target=tic6x-elf make all make install cd .. cd build-gmp/ export PATH=$PATH:/usr/local/tic6x export PATH=$PATH:/usr/local/tic6x/bin ../gmp/configure --prefix=/usr/local/tic6x/gmp ../gmp/configure --prefix=/usr/local/tic6x/gmp make make install cd .. cd build-mpfr/ ../mpfr/configure --prefix=/usr/local/tic6x/mpfr --with-gmp=/usr/local/tic6x/gmp make make install cd .. cd build-mpc ../mpc/configure --prefix=/usr/local/tic6x/mpc --with-gmp=/usr/local/tic6x/gmp --with-mpfr=/usr/local/tic6x/mpfr --enable-static --disable-shared make make install cd .. cd build-gcc ../gcc-4.7.2/configure --target=tic6x-elf --prefix=/usr/localti/c6x --enable-languages="c,c++" --with-newlib --with-header=../newlib-1.20.0/newlib/libc/include --with-gmp=/usr/local/tic6x/gmp --with-mpfr=/usr/local/tic6x/mpfr --with- mpc=/usr/local/tic6x/mpc make all-gcc make install-gcc cd .. cd build-newlib/ export LD_LIBRARY_PATH=$LD_LIBRARY_PATH}:/usr/local/tic6x/gmp/lib:/usr/local/tic6x/mpfr/lib:/usr/local/tic6x/mpc/lib ln -s /usr/local/tic6x/bin/tic6x-elf-gcc /usr/local/tic6x/bin/tic6x-elf-cc ../newlib-1.20.0/configure --target=tic6x-elf --prefix=/usr/local/tic6x/ make all install cd .. cd build-gcc make all install after installation, I haved compile the .c file. Then the error occur. The message as shown in below: $ tic6x-elf-gcc helloworld.c /usr/local/c6x/lib/gcc/tic6x-elf/4.7.2/../../../../tic6x-elf/bin/ld: warning: cannot find entry symbol _start; defaulting to 0000000000008100 /usr/local/c6x/lib/gcc/tic6x-elf/4.7.2/../../../../tic6x-elf/lib/libc.a(lib_a-sbrkr.o): In function `_sbrk_r': /home/spirits/src/build-newlib/tic6x-elf/newlib/libc/reent/../../../../../newlib-1.20.0/newlib/libc/reent/sbrkr.c:58: undefined reference to `sbrk' /usr/local/c6x/lib/gcc/tic6x-elf/4.7.2/../../../../tic6x-elf/lib/libc.a(lib_a-writer.o): In function `_write_r': /home/spirits/src/build-newlib/tic6x-elf/newlib/libc/reent/../../../../../newlib-1.20.0/newlib/libc/reent/writer.c:58: undefined reference to `write' /usr/local/c6x/lib/gcc/tic6x-elf/4.7.2/../../../../tic6x-elf/lib/libc.a(lib_a-closer.o): In function `_close_r': /home/spirits/src/build-newlib/tic6x-elf/newlib/libc/reent/../../../../../newlib-1.20.0/newlib/libc/reent/closer.c:53: undefined reference to `close' /usr/local/c6x/lib/gcc/tic6x-elf/4.7.2/../../../../tic6x-elf/lib/libc.a(lib_a-fstatr.o): In function `_fstat_r': /home/spirits/src/build-newlib/tic6x-elf/newlib/libc/reent/../../../../../newlib-1.20.0/newlib/libc/reent/fstatr.c:62: undefined reference to `fstat' /usr/local/c6x/lib/gcc/tic6x-elf/4.7.2/../../../../tic6x-elf/lib/libc.a(lib_a-isattyr.o): In function `_isatty_r': /home/spirits/src/build-newlib/tic6x-elf/newlib/libc/reent/../../../../../newlib-1.20.0/newlib/libc/reent/isattyr.c:58: undefined reference to `isatty' /usr/local/c6x/lib/gcc/tic6x-elf/4.7.2/../../../../tic6x-elf/lib/libc.a(lib_a-lseekr.o): In function `_lseek_r': /home/spirits/src/build-newlib/tic6x-elf/newlib/libc/reent/../../../../../newlib-1.20.0/newlib/libc/reent/lseekr.c:58: undefined reference to `lseek' /usr/local/c6x/lib/gcc/tic6x-elf/4.7.2/../../../../tic6x-elf/lib/libc.a(lib_a-readr.o): In function `_read_r': /home/spirits/src/build-newlib/tic6x-elf/newlib/libc/reent/../../../../../newlib-1.20.0/newlib/libc/reent/readr.c:58: undefined reference to `read' collect2: error：ld return 1 Every thing is OK when I build arm cross compiler and compile the .c or .cpp files. Can you tell me what happen and how to solve it ? Thanks. Best Regards. W.J. Wang
