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On Wed, 14 Jun 2006, chingfu wrote: " I compiled a program but got these error at link as below :" What command did you use to link? "/opt/crosstools/mips/lib/gcc/mips-elf/4.1.0/../../../../mips-elf/lib/soft-float/libc.a(exit.o): In function `exit': /cross/src/gcc/newlib/libc/stdlib/exit.c:65: undefined reference to `_exit' /cross/src/gcc/newlib/libc/stdlib/exit.c:65: relocation truncated to fit: R_MIPS_26 against `_exit' /opt/crosstools/mips/lib/gcc/mips-elf/4.1.0/../../../../mips-elf/lib/soft-float/libc.a(makebuf.o): In function `__smakebuf': /cross/src/gcc/newlib/libc/stdio/makebuf.c:96: undefined reference to `isatty' /cross/src/gcc/newlib/libc/stdio/makebuf.c:96: relocation truncated to fit: R_MIPS_26 against `isatty' /opt/crosstools/mips/lib/gcc/mips-elf/4.1.0/../../../../mips-elf/lib/soft-float/libc.a(sbrkr.o): In function `_sbrk_r': /cross/src/gcc/newlib/libc/reent/sbrkr.c:60: undefined reference to `sbrk' /cross/src/gcc/newlib/libc/reent/sbrkr.c:60: relocation truncated to fit: R_MIPS_26 against `sbrk' /cross/src/gcc/newlib/libc/reent/sbrkr.c:60: relocation truncated to fit: R_MIPS_GPREL16 against `errno' /cross/src/gcc/newlib/libc/reent/sbrkr.c:60: relocation truncated to fit: R_MIPS_GPREL16 against `errno' /opt/crosstools/mips/lib/gcc/mips-elf/4.1.0/../../../../mips-elf/lib/soft-float/libc.a(writer.o): In function `_write_r': /cross/src/gcc/newlib/libc/reent/writer.c:58: relocation truncated to fit: R_MIPS_GPREL16 against `errno' /cross/src/gcc/newlib/libc/reent/writer.c:58: relocation truncated to fit: R_MIPS_GPREL16 against `errno' /opt/crosstools/mips/lib/gcc/mips-elf/4.1.0/../../../../mips-elf/lib/soft-float/libc.a(closer.o): In function `_close_r': /cross/src/gcc/newlib/libc/reent/closer.c:53: relocation truncated to fit: R_MIPS_GPREL16 against `errno' /cross/src/gcc/newlib/libc/reent/closer.c:53: relocation truncated to fit: R_MIPS_GPREL16 against `errno' /opt/crosstools/mips/lib/gcc/mips-elf/4.1.0/../../../../mips-elf/lib/soft-float/libc.a(fstatr.o): In function `_fstat_r': /cross/src/gcc/newlib/libc/reent/fstatr.c:62: undefined reference to `fstat' /cross/src/gcc/newlib/libc/reent/fstatr.c:62: relocation truncated to fit: R_MIPS_26 against `fstat' /cross/src/gcc/newlib/libc/reent/fstatr.c:62: additional relocation overflows omitted from the output /opt/crosstools/mips/lib/gcc/mips-elf/4.1.0/../../../../mips-elf/lib/soft-float/libc.a(lseekr.o): In function `_lseek_r': /cross/src/gcc/newlib/libc/reent/lseekr.c:58: undefined reference to `lseek' collect2: ld returned 1 exit status make: *** [ras.exe] Error 1 I not implement these functions because I not use them in my code." You are not supposed to write this functions yourself because they are common functions which should already have been supplied by a library. You might not have called them explicitly, but something somewhere may call them, e.g. if your program can be terminated gracefully it may rely on exit. Perhaps you did not successfully compile all of these library functions or perhaps you have simply neglected to link a necessary library. However, I notice that your libc.a contains lseekr.o but not lseek() so it seems to me that you have skipped something. " Do I implement these functions ?" You should not have to. -- For unsubscribe information see http://sourceware.org/lists.html#faq
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