cmake: Check for sys/param.h header file

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>

ConfigureChecks.cmake

@@ -54,6 +54,7 @@ check_include_file(unistd.h HAVE_UNISTD_H)
 check_include_file(util.h HAVE_UTIL_H)
 check_include_file(libutil.h HAVE_LIBUTIL_H)
 check_include_file(sys/time.h HAVE_SYS_TIME_H)
+check_include_file(sys/param.h HAVE_SYS_PARAM_H)
 check_include_file(arpa/inet.h HAVE_ARPA_INET_H)
 
 if (WIN32)

src/external/bcrypt_pbkdf.c

@@ -23,7 +23,9 @@
 #include "libssh/wrapper.h"
 #include <stdlib.h>
 #include <sys/types.h>
+#ifdef HAVE_SYS_PARAM_H
 #include <sys/param.h>
+#endif
 
 #include "libssh/blf.h"
 #include "libssh/pki_priv.h"