From: David Woodhouse <David.Woodhouse@intel.com>
Date: Sat, 20 Feb 2016 14:40:48 +0000 (+0000)
Subject: RT4339: Fix handling of <internal/bn_conf.h>
X-Git-Tag: OpenSSL_1_1_0-pre4~536
X-Git-Url: https://git.openssl.org/?p=openssl.git;a=commitdiff_plain;h=78c830785ca0f422502db9b201127ef1d9fe3966

RT4339: Fix handling of <internal/bn_conf.h>

The entire contents of <internal/bn_conf.h> are unwanted in the UEFI
build because we have to do it differently there. To support building
for both 32-bit and 64-bit platforms without re-running the OpenSSL
Configure script, the EDK2 environment defines THIRTY_TWO_BIT or
SIXTY_FOUR_BIT for itself according to the target platform.

The current setup is broken, though. It checks for OPENSSL_SYS_UEFI but
before it's actually defined, since opensslconf.h hasn't yet been
included.

Let's fix that by including opensslconf.h. And also let's move the
bn_conf.h doesn't even need to *exist* in the UEFI build environment.

This is also GH PR736.

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

diff --git a/crypto/bn/bn_lcl.h b/crypto/bn/bn_lcl.h
index 0f3205c0ca..4af8bfb9a3 100644
--- a/crypto/bn/bn_lcl.h
+++ b/crypto/bn/bn_lcl.h
@@ -111,7 +111,17 @@
 #ifndef HEADER_BN_LCL_H
 # define HEADER_BN_LCL_H
 
-# include "internal/bn_conf.h"
+/*
+ * The EDK2 build doesn't use bn_conf.h; it sets THIRTY_TWO_BIT or
+ * SIXTY_FOUR_BIT in its own environment since it doesn't re-run our
+ * Configure script and needs to support both 32-bit and 64-bit.
+ */
+# include <openssl/opensslconf.h>
+
+# if !defined(OPENSSL_SYS_UEFI)
+#  include "internal/bn_conf.h"
+# endif
+
 # include "internal/bn_int.h"
 
 #ifdef  __cplusplus
diff --git a/crypto/include/internal/bn_conf.h.in b/crypto/include/internal/bn_conf.h.in
index 5ebd55d522..e25a435726 100644
--- a/crypto/include/internal/bn_conf.h.in
+++ b/crypto/include/internal/bn_conf.h.in
@@ -56,7 +56,11 @@
 #ifndef HEADER_BN_CONF_H
 # define HEADER_BN_CONF_H
 
-# if !defined(OPENSSL_SYS_UEFI)
+/*
+ * The contents of this file are not used in the UEFI build, as
+ * both 32-bit and 64-bit builds are supported from a single run
+ * of the Configure script.
+ */
 
 /* Should we define BN_DIV2W here? */
 
@@ -64,6 +68,5 @@
 {- $config{b64l} ? "#define" : "#undef" -} SIXTY_FOUR_BIT_LONG
 {- $config{b64}  ? "#define" : "#undef" -} SIXTY_FOUR_BIT
 {- $config{b32}  ? "#define" : "#undef" -} THIRTY_TWO_BIT
-# endif
 
 #endif