Clarify the meaning of no-stdio in INSTALL

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4259)

diff --git a/INSTALL b/INSTALL
index 3deb7ff9fcc85622ae42e27c02c6081505c04ba3..1d130118d5f62e2da9efc6d7af0dacffe3e6cc1d 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -412,8 +412,9 @@
                    has an impact when not built "shared".
 
   no-stdio
-                   Don't use any C "stdio" features. Only libcrypto and libssl
-                   can be built in this way. Using this option will suppress
+                   Don't use anything from the C header file "stdio.h" that
+                   makes use of the "FILE" type. Only libcrypto and libssl can
+                   be built in this way. Using this option will suppress
                    building the command line applications. Additionally since
                    the OpenSSL tests also use the command line applications the
                    tests will also be skipped.