bug when compiling findutls-4.1

[root]

for subdir in lib find xargs locate doc testsuite; do \
  echo making all in $subdir ; \
  (cd $subdir; make all); \
done
making all in lib
make[1]: Entering directory `/home/user/nico/new_server/findutils-4.1/lib'
gcc -c -DHAVE_CONFIG_H -I.. -I.  -g -O nextelem.c
nextelem.c:35: parse error before "__extension__"
nextelem.c:35: `__len' undeclared here (not in a function)
nextelem.c:35: initializer element is not constant
nextelem.c:35: parse error before "if"
nextelem.c:35: conflicting types for `__retval'
nextelem.c:35: previous declaration of `__retval'
nextelem.c:35: warning: data definition has no type or storage class
nextelem.c:35: parse error before '}' token
make[1]: *** [nextelem.o] Error 1
make[1]: Leaving directory `/home/user/nico/new_server/findutils-4.1/lib'
making all in find
make[1]: Entering directory `/home/user/nico/new_server/findutils-4.1/find'
gcc -c -DHAVE_CONFIG_H -I.. -I../lib  -g -O fstype.c
fstype.c:33: parse error before "__extension__"
fstype.c:33: `__len' undeclared here (not in a function)
fstype.c:33: initializer element is not constant
fstype.c:33: parse error before "if"
fstype.c:33: conflicting types for `__retval'
fstype.c:33: previous declaration of `__retval'
fstype.c:33: warning: data definition has no type or storage class
fstype.c:33: parse error before '}' token
make[1]: *** [fstype.o] Error 1
make[1]: Leaving directory `/home/user/nico/new_server/findutils-4.1/find'
making all in xargs
make[1]: Entering directory `/home/user/nico/new_server/findutils-4.1/xargs'
gcc -c -DHAVE_CONFIG_H -I.. -I../lib  -g -O xargs.c
xargs.c:64: parse error before "__extension__"
xargs.c:64: `__len' undeclared here (not in a function)
xargs.c:64: initializer element is not constant
xargs.c:64: parse error before "if"
xargs.c:64: conflicting types for `__retval'
xargs.c:64: previous declaration of `__retval'
xargs.c:64: warning: data definition has no type or storage class
xargs.c:64: parse error before '}' token
xargs.c: In function `main':
xargs.c:255: warning: return type of `main' is not `int'
make[1]: *** [xargs.o] Error 1
make[1]: Leaving directory `/home/user/nico/new_server/findutils-4.1/xargs'
making all in locate
make[1]: Entering directory `/home/user/nico/new_server/findutils-4.1/locate'
gcc -c -DHAVE_CONFIG_H -I.. -I../lib -DLOCATE_DB=\"/usr/local/var/locatedb\"  
-g -O ../find/version.c
make[1]: *** No rule to make target `../lib/libfind.a', needed by `locate'.  
Stop.
make[1]: Leaving directory `/home/user/nico/new_server/findutils-4.1/locate'
making all in doc
make[1]: Entering directory `/home/user/nico/new_server/findutils-4.1/doc'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/user/nico/new_server/findutils-4.1/doc'
making all in testsuite
make[1]: Entering directory `/home/user/nico/new_server/findutils-4.1/testsuite'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/user/nico/new_server/findutils-4.1/testsuite'