Can't compile Mod_Security on Apache 2..!

[hostede]

System, RHES 4, Apache/2.0.46.
httpd-devel is installed in the server.

This happens trying with both versions of mod security, 1.94 and 2.
When I run "/usr/sbin/apxs -cia mod_security2.c" to compile Mod Security 2 for apache.. there are lot of errors like this:

/usr/include/httpd/http_core.h:160: stray '\316' in program
/usr/include/httpd/http_core.h:160: syntax error at '#' token
/usr/include/httpd/http_core.h:160: stray '\240' in program
/usr/include/httpd/http_core.h:160: stray '\321' in program
/usr/include/httpd/http_core.h:160: stray '\370' in program
/usr/include/httpd/http_core.h:160: stray '\27' in program
/usr/include/httpd/http_core.h:160: stray '\301' in program
/usr/include/httpd/http_core.h:160: stray '\213' in program
/usr/include/httpd/http_core.h:160: stray '\337' in program
/usr/include/httpd/http_core.h:160: stray '\275' in program
/usr/include/httpd/http_core.h:160: stray '\241' in program
/usr/include/httpd/http_core.h:160: stray '\201' in program
/usr/include/httpd/http_core.h:160: stray '\361' in program
/usr/include/httpd/http_core.h:160: stray '\214' in program
/usr/include/httpd/http_core.h:160: stray '\267' in program
/usr/include/httpd/http_core.h:160: stray '\30' in program
/usr/include/httpd/http_core.h:160: stray '\' in program
/usr/include/httpd/http_core.h:160: stray '\217' in program
/usr/include/httpd/http_core.h:160: stray '\225' in program
/usr/include/httpd/http_core.h:160: stray '\26' in program
/usr/include/httpd/http_core.h:160: stray '\365' in program
/usr/include/httpd/http_core.h:160: stray '\253' in program
/usr/include/httpd/http_core.h:161:214: warning: character constant too long
/usr/include/httpd/http_core.h:160: stray '\23' in program
/usr/include/httpd/http_core.h:160: stray '\353' in program
/usr/include/httpd/http_core.h:160: stray '\311' in program
/usr/include/httpd/http_core.h:160: stray '\244' in program
/usr/include/httpd/http_core.h:160: stray '\302' in program
/usr/include/httpd/http_core.h:160: stray '\336' in program
/usr/include/httpd/http_core.h:160: stray '\21' in program
/usr/include/httpd/http_core.h:160: stray '\307' in program
/usr/include/httpd/http_core.h:160: stray '\201' in program
/usr/include/httpd/http_core.h:160: stray '\365' in program
/usr/include/httpd/http_core.h:160: stray '\315' in program
/usr/include/httpd/http_core.h:160: stray '\254' in program
/usr/include/httpd/http_core.h:160: stray '\307' in program
/usr/include/httpd/http_core.h:160: stray '\222' in program
/usr/include/httpd/http_core.h:160: stray '\204' in program
/usr/include/httpd/http_core.h:160: stray '\360' in program
/usr/include/httpd/http_core.h:160: stray '\5' in program
/usr/include/httpd/http_core.h:162:2: warning: multi-line string literals are deprecated
/usr/include/httpd/http_core.h:162:2: warning: null character(s) preserved in literal
/usr/include/httpd/http_core.h:162: confused by earlier errors, bailing out
apxs:Error: Command failed with rc=65536