m68k: conflicting types for 'read'

[Anders Montonen <Anders dot Montonen at iki dot fi>]

Hi,

When trying to compile newlib 2.1.0 for a m68k-unknown-elf target using GCC 4.9.1 (same behaviour with GCC 4.8.3), the build fails with an error about conflicting types for the read function. Newlib 2.0.0 compiles without errors.

/Users/anders/work/toolchain/gcc/4.9.1/m68k-elf/./gcc/xgcc -B/Users/anders/work/toolchain/gcc/4.9.1/m68k-elf/./gcc/ -nostdinc -B/Users/anders/work/toolchain/gcc/4.9.1/m68k-elf/m68k-elf/newlib/ -isystem /Users/anders/work/toolchain/gcc/4.9.1/m68k-elf/m68k-elf/newlib/targ-include -isystem /Users/anders/work/toolchain/gcc/4.9.1/gcc-4.9.1/newlib/libc/include -B/Users/anders/work/toolchain/gcc/4.9.1/m68k-elf/m68k-elf/libgloss/m68k -L/Users/anders/work/toolchain/gcc/4.9.1/m68k-elf/m68k-elf/libgloss/libnosys -L/Users/anders/work/toolchain/gcc/4.9.1/gcc-4.9.1/libgloss/m68k -B/Users/anders/local/m68k-elf/bin/ -B/Users/anders/local/m68k-elf/lib/ -isystem /Users/anders/local/m68k-elf/include -isystem /Users/anders/local/m68k-elf/sys-include    -g -O2 -g -O2  -mcpu=51qe -DHOSTED=1 -I. -I../../../../../gcc-4.9.1/libgloss/m68k/.. -c ../../../../../gcc-4.9.1/libgloss/m68k/io-read.c -o hosted-read.o
../../../../../gcc-4.9.1/libgloss/m68k/io-read.c:33:9: error: conflicting types for 'read'
 ssize_t read (int fd, void *buf, size_t count)
         ^
In file included from /Users/anders/work/toolchain/gcc/4.9.1/gcc-4.9.1/newlib/libc/include/sys/unistd.h:8:0,
                 from /Users/anders/work/toolchain/gcc/4.9.1/gcc-4.9.1/newlib/libc/include/unistd.h:4,
                 from ../../../../../gcc-4.9.1/libgloss/m68k/io-read.c:17:
/Users/anders/work/toolchain/gcc/4.9.1/gcc-4.9.1/newlib/libc/include/sys/unistd.h:144:25: note: previous declaration of 'read' was here
 _READ_WRITE_RETURN_TYPE _EXFUN(read, (int __fd, void *__buf, size_t __nbyte ));

Regards,
Anders Montonen