The 'openssl ca' manual, found in http://www.openssl.org/docs/apps/ca.html, says:
-infiles
if present this should be the last option, all subsequent arguments
are assumed to the the names of files containing certificate
requests.
That should answer your question. I'm considering
Openssl-0.9.6g on WindowsXP/Windows2000 + MS Visual Studio 6.0 SP5
I created everything with
perl Configure VC-WIN32 no-threads (used ActiveState ActivePerl 5.6)
ms\do_ms
nmake -f ms\ntdll.mak
If I try:
..\bin\openssl ca -days 3650 -policy policy_anything -out
.\dealer\newcert.pem -infiles