problem with 2.5.2

[Octave]

Hello,
I cannot compile 2.5.2 on redhat 6.2 (no problem with 7.1/7.2)

have you any idea.

thanks in advance.
Octave

[root at XX rsync-2.5.2]# make
gcc -I. -I. -g -O2 -DHAVE_CONFIG_H -Wall -W -c rsync.c -o rsync.o
In file included from rsync.c:23:
rsync.h:339: warning: no semicolon at end of struct or union
rsync.h:339: parse error before `inode'
rsync.h:341: parse error before `dev'
rsync.h:341: warning: type defaults to `int' in declaration of `dev'
rsync.h:341: warning: data definition has no type or storage class
rsync.h:344: parse error before `rdev'
rsync.h:344: warning: type defaults to `int' in declaration of `rdev'
rsync.h:344: warning: data definition has no type or storage class
rsync.h:347: `basename' redeclared as different kind of symbol
/usr/include/string.h:317: previous declaration of `basename'
rsync.h:350: `link' redeclared as different kind of symbol
/usr/include/unistd.h:678: previous declaration of `link'
rsync.h:352: parse error before `}'
rsync.h: In function `flist_up':
rsync.h:420: dereferencing pointer to incomplete type
rsync.c: In function `set_perms':
rsync.c:165: dereferencing pointer to incomplete type
rsync.c:168: dereferencing pointer to incomplete type
rsync.c:178: dereferencing pointer to incomplete type
rsync.c:179: dereferencing pointer to incomplete type
rsync.c:179: dereferencing pointer to incomplete type
rsync.c:184: dereferencing pointer to incomplete type
rsync.c:188: dereferencing pointer to incomplete type
rsync.c:189: dereferencing pointer to incomplete type
rsync.c:206: dereferencing pointer to incomplete type
rsync.c:208: dereferencing pointer to incomplete type
rsync.c:152: warning: `change_uid' might be used uninitialized in this function
rsync.c:152: warning: `change_gid' might be used uninitialized in this function
rsync.c: In function `finish_transfer':
rsync.c:245: dereferencing pointer to incomplete type
make: *** [rsync.o] Error 1