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I checked out the latest libc-ports from cvs. I met building problem when using it to build arm-linux toolchain. I used crosstool. The error appeared at building glibc startfiles which are required by shared libgcc. In detail, it appeared at compiling glibc-2.4/sysdeps/unix/sysv/linux/init-first.c. The error is redefinition error.
In file included from ../ports/sysdeps/unix/sysv/linux/arm/bits/fcntl.h:26, from ../io/fcntl.h:34, from ../include/fcntl.h:2, from ../sysdeps/unix/sysv/linux/init-first.c:22: ../sysdeps/unix/sysv/linux/bits/uio.h:20:3: error: #error "Never include <bits/u io.h> directly; use <sys/uio.h> instead." In file included from ../misc/sys/uio.h:29, from ../include/sys/uio.h:2, from ../socket/sys/socket.h:27, from ../include/sys/socket.h:2, from ../inet/netinet/in.h:24, from ../include/netinet/in.h:3, from ../resolv/resolv.h:57, from ../include/resolv.h:12, from ../nptl/descr.h:39, from ../ports/sysdeps/arm/nptl/tls.h:63, from ../include/tls.h:6, from ../include/link.h:45, from ../include/dlfcn.h:3, from ../sysdeps/generic/ldsodefs.h:32, from ../ports/sysdeps/arm/ldsodefs.h:39, from ../sysdeps/unix/sysv/linux/ldsodefs.h:25, from ../sysdeps/unix/sysv/linux/init-first.c:30: ../sysdeps/unix/sysv/linux/bits/uio.h:43: error: redefinition of 'struct iovec'
This is because fcntl.h added below code snippet. If I removed these three lines, I can get the final toolchain successfully.
in ports/sysdeps/unix/sysv/linux/arm/bits/fcntl.h: #ifdef __USE_GNU # include <bits/uio.h> #endif
I'm not clear why this code snippet is needed? If I must use it, do I miss anything else?
-- best regards, -Bridge
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