Shan Wang wrote:
> Hi all,
> I downloaded the SDE lite toolchain from MIPS Technologies. I can use
> the makefiles to build all the examples come with the package and test
> them with the simulator. But when I tried to use sde-gcc to cross
> compile the hello world example directly:
Note that those examples are for a bare-metal embedded system without OS,
they won't work on Linux/MIPS.
> sde-gcc -Wall -mips32 -mtune=4kc -EL hello.c -o hello
Also, sde-gcc is a compiler for embedded ELF targets, it won't produce
> I got errors like the following:
> /../sde/bin/ld: warning: cannot find entry symbol __start;
> defaulting to 0000000080020000
> /tmp/ccEaLxlW.o: In function `main':
> hello.c:(.text+0x20): undefined reference to `printf'
> hello.c:(.text+0x20): relocation truncated to fit: R_MIPS_26 against
> collect2: ld returned 1 exit status
This is the expected result, since your command line misses to include
the necessary libraries and the board support package.
> Does that mean the SDE lite package is not a complete cross toolchain,
> can I use it to compile my own application?
This depends on what your target platform is. If it is Linux/MIPS, you
may want to have a look at http://www.linux-mips.org/wiki/Toolchains.