cvs from just before
Branch PHP_4_0_7:

make reports (on debian testing, debian unstable and suse 7.0):
[...]


gcc -DHAVE_CONFIG_H -I. -I. -I../main -DLINUX=22 -DUSE_HSREGEX -DUSE_EXPAT -I../TSRM -g -Wall -c zend_language_scanner.c    -fPIC -DPIC -o zend_language_scanner.lo
In file included from zend_compile.h:188,
                 from ./zend_language_scanner.l:55:
zend_globals.h:219: redefinition of `yy_state_type'
zend_language_scanner.c:305: `yy_state_type' previously declared here
zend_language_scanner.c:5645: warning: `yy_fatal_error' defined but not used
zend_language_scanner.c:2714: warning: `yy_last_accepting_state' defined but not used
zend_language_scanner.c:2715: warning: `yy_last_accepting_cpos' defined but not used
zend_language_scanner.c:2721: warning: `yy_more_flag' defined but not used
zend_language_scanner.c:2722: warning: `yy_more_len' defined but not used
zend_language_scanner.c:5630: warning: `yy_top_state' defined but not used
make[1]: *** [zend_language_scanner.lo] Error 1
make[1]: Leaving directory `/opt/cvs/php4/ZendEngine1'
make: *** [all-recursive] Error 1