Fix no-stdio build

Much related/similar work also done by
Ivan Nestlerode <ivan.nestlerode@sonos.com>

   +Replace FILE BIO's with dummy ops that fail.
   +Include <stdio.h> for sscanf() even with no-stdio (since the declaration
    is there). We rely on sscanf() to parse the OPENSSL_ia32cap environment
    variable, since it can be larger than a 'long'. And we don't rely on the
    availability of strtoull().
   +Remove OPENSSL_stderr(); not used.
   +Make OPENSSL_showfatal() do nothing (currently without stdio there's
    nothing we can do).
   +Remove file-based functionality from ssl/. The function
    prototypes were already gone, but not the functions themselves.
   +Remove unviable conf functionality via SYS_UEFI
   +Add fallback definition of BUFSIZ.
   +Remove functions taking FILE * from header files.
   +Add missing DECLARE_PEM_write_fp_const
   +Disable X509_LOOKUP_hash_dir(). X509_LOOKUP_file() was already compiled out,
    so remove its prototype.
   +Use OPENSSL_showfatal() in CRYPTO_destroy_dynlockid().
   +Eliminate SRP_VBASE_init() and supporting functions. Users will need to
    build the verifier manually instead.
   +Eliminate compiler warning for unused do_pk8pkey_fp().
   +Disable TEST_ENG_OPENSSL_PKEY.
   +Disable GOST engine as is uses [f]printf all over the place.
   +Eliminate compiler warning for unused send_fp_chars().

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/e_os.h b/e_os.h
index b3a3338eeb..8c4223bc53 100644
--- a/e_os.h
+++ b/e_os.h
@@ -76,6 +76,12 @@ extern "C" {
 #  undef REF_PRINT
 #  define REF_PRINT(a,b)  fprintf(stderr,"%08X:%4d:%s\n",(int)b,b->references,a)
 # endif
+# if defined(OPENSSL_NO_STDIO) && defined(REF_CHECK)
+#  error "Cannot have REF_CHECK with no-stdio"
+# endif
+# if defined(OPENSSL_NO_STDIO) && defined(REF_PRINT)
+#  error "Cannot have REF_PRINT with no-stdio"
+# endif
 
 # ifndef DEVRANDOM
 /*