Corel Linux 1.2 Compile Error

[vmunix486]

I don't know how this happened

eshttpd.c:1: parse error before character 0357
In file included from /usr/include/sys/socket.h:34,
                 from eshttpd.c:28:
/usr/include/bits/socket.h:210: parse error before `size_t'
/usr/include/bits/socket.h:213: parse error before `msg_controllen'
/usr/include/bits/socket.h:216: parse error before `}'
/usr/include/bits/socket.h:221: parse error before `size_t'
/usr/include/bits/socket.h:229: parse error before `}'
In file included from eshttpd.c:28:
/usr/include/sys/socket.h:132: parse error before `size_t'
/usr/include/sys/socket.h:134: parse error before `size_t'
/usr/include/sys/socket.h:139: parse error before `size_t'
/usr/include/sys/socket.h:143: parse error before `size_t'
/usr/include/sys/socket.h:151: parse error before `size_t'
In file included from eshttpd.c:31:
/usr/include/unistd.h:300: parse error before `size_t'
/usr/include/unistd.h:301: parse error before `size_t'
/usr/include/unistd.h:304: parse error before `size_t'
/usr/include/unistd.h:305: parse error before `size_t'
/usr/include/unistd.h:419: parse error before `size_t'
In file included from eshttpd.c:31:
/usr/include/unistd.h:664: parse error before `size_t'
In file included from eshttpd.c:32:
/usr/include/string.h:38: parse error before `size_t'
/usr/include/string.h:42: parse error before `size_t'
/usr/include/string.h:54: parse error before `size_t'
/usr/include/string.h:58: parse error before `size_t'
/usr/include/string.h:61: parse error before `size_t'
/usr/include/string.h:75: parse error before `size_t'
/usr/include/string.h:82: parse error before `size_t'
/usr/include/string.h:87: parse error before `size_t'
/usr/include/string.h:92: parse error before `strxfrm'
/usr/include/string.h:93: parse error before `size_t'
/usr/include/string.h:158: parse error before `strcspn'
/usr/include/string.h:161: parse error before `strspn'
/usr/include/string.h:207: parse error before `strlen'
/usr/include/string.h:227: parse error before `size_t'
In file included from eshttpd.c:33:
/usr/include/stdlib.h:80: parse error before `__ctype_get_mb_cur_max'
/usr/include/stdlib.h:474: parse error before `__size'
/usr/include/stdlib.h:476: parse error before `__nmemb'
/usr/include/stdlib.h:482: parse error before `size_t'
/usr/include/stdlib.h:613: parse error before `size_t'
/usr/include/stdlib.h:618: parse error before `size_t'
/usr/include/stdlib.h:695: parse error before `size_t'
/usr/include/stdlib.h:699: parse error before `size_t'
/usr/include/stdlib.h:706: parse error before `mbstowcs'
/usr/include/stdlib.h:707: parse error before `size_t'
/usr/include/stdlib.h:709: parse error before `wcstombs'
/usr/include/stdlib.h:710: parse error before `size_t'
In file included from /usr/include/stdio.h:57,
                 from eshttpd.c:34:
/usr/include/libio.h:263: parse error before `size_t'
/usr/include/libio.h:272: parse error before `size_t'
/usr/include/libio.h:368: parse error before `_IO_sgetn'
/usr/include/libio.h:368: parse error before `size_t'
In file included from eshttpd.c:34:
/usr/include/stdio.h:237: parse error before `size_t'
/usr/include/stdio.h:446: parse error before `fread'
/usr/include/stdio.h:446: parse error before `size_t'
/usr/include/stdio.h:449: parse error before `fwrite'
/usr/include/stdio.h:449: parse error before `size_t'
In file included from eshttpd.c:37:
/usr/include/arpa/inet.h:46: parse error before `size_t'
/usr/include/arpa/inet.h:59: parse error before `size_t'
/usr/include/arpa/inet.h:65: parse error before `size_t'
/usr/include/arpa/inet.h:80: parse error before `size_t'
make: *** [all] Error 1