24 files changed, 492 insertions, 0 deletions
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf.h b/libcrypto/libcrypto/downstream/internal/bn_conf.h
new file mode 100644
index 0000000..4c676d6
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf.h
@@ -0,0 +1,14 @@
+/* file      : libcrypto/downstream/internal/bn_conf.h -*- C -*-
+ * copyright : Copyright (c) 2018-2019 Code Synthesis Ltd
+ * license   : OpenSSL and SSLeay Licenses; see accompanying LICENSE file
+ */
+
+#ifndef LIBCRYPTO_DOWNSTREAM_INTERNAL_BN_CONF_H
+#define LIBCRYPTO_DOWNSTREAM_INTERNAL_BN_CONF_H
+
+/*
+ * Include upstream's auto-generated platform-specific bn_conf.h.
+ */
+#include <internal/bn_conf/platform.h>
+
+#endif /* LIBCRYPTO_DOWNSTREAM_INTERNAL_BN_CONF_H */
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf.h.in.orig b/libcrypto/libcrypto/downstream/internal/bn_conf.h.in.orig
new file mode 120000
index 0000000..5bb452b
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf.h.in.orig
@@ -0,0 +1 @@
+../../crypto/include/internal/bn_conf.h.in
+\ No newline at end of file
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf/i686-linux.h b/libcrypto/libcrypto/downstream/internal/bn_conf/i686-linux.h
new file mode 100644
index 0000000..ae0c797
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf/i686-linux.h
@@ -0,0 +1,28 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/bn_conf.h.in */
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_BN_CONF_H
+# define HEADER_BN_CONF_H
+
+/*
+ * 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? */
+
+/* Only one for the following should be defined */
+#undef SIXTY_FOUR_BIT_LONG
+#undef SIXTY_FOUR_BIT
+#define THIRTY_TWO_BIT
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf/i686-win32-mingw32.h b/libcrypto/libcrypto/downstream/internal/bn_conf/i686-win32-mingw32.h
new file mode 100644
index 0000000..ae0c797
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf/i686-win32-mingw32.h
@@ -0,0 +1,28 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/bn_conf.h.in */
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_BN_CONF_H
+# define HEADER_BN_CONF_H
+
+/*
+ * 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? */
+
+/* Only one for the following should be defined */
+#undef SIXTY_FOUR_BIT_LONG
+#undef SIXTY_FOUR_BIT
+#define THIRTY_TWO_BIT
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf/i686-win32-msvc.h b/libcrypto/libcrypto/downstream/internal/bn_conf/i686-win32-msvc.h
new file mode 100644
index 0000000..f9dd28d
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf/i686-win32-msvc.h
@@ -0,0 +1,28 @@
+/* WARNING: do not edit! */
+/* Generated by makefile from ..\crypto\include\internal\bn_conf.h.in */
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_BN_CONF_H
+# define HEADER_BN_CONF_H
+
+/*
+ * 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? */
+
+/* Only one for the following should be defined */
+#undef SIXTY_FOUR_BIT_LONG
+#undef SIXTY_FOUR_BIT
+#define THIRTY_TWO_BIT
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf/platform.h b/libcrypto/libcrypto/downstream/internal/bn_conf/platform.h
new file mode 120000
index 0000000..d732646
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf/platform.h
@@ -0,0 +1 @@
+../platform.h
+\ No newline at end of file
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-freebsd.h b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-freebsd.h
new file mode 100644
index 0000000..bfc2761
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-freebsd.h
@@ -0,0 +1,28 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/bn_conf.h.in */
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_BN_CONF_H
+# define HEADER_BN_CONF_H
+
+/*
+ * 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? */
+
+/* Only one for the following should be defined */
+#define SIXTY_FOUR_BIT_LONG
+#undef SIXTY_FOUR_BIT
+#undef THIRTY_TWO_BIT
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-linux.h b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-linux.h
new file mode 100644
index 0000000..bfc2761
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-linux.h
@@ -0,0 +1,28 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/bn_conf.h.in */
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_BN_CONF_H
+# define HEADER_BN_CONF_H
+
+/*
+ * 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? */
+
+/* Only one for the following should be defined */
+#define SIXTY_FOUR_BIT_LONG
+#undef SIXTY_FOUR_BIT
+#undef THIRTY_TWO_BIT
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-macos.h b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-macos.h
new file mode 100644
index 0000000..bfc2761
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-macos.h
@@ -0,0 +1,28 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/bn_conf.h.in */
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_BN_CONF_H
+# define HEADER_BN_CONF_H
+
+/*
+ * 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? */
+
+/* Only one for the following should be defined */
+#define SIXTY_FOUR_BIT_LONG
+#undef SIXTY_FOUR_BIT
+#undef THIRTY_TWO_BIT
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-win32-mingw32.h b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-win32-mingw32.h
new file mode 100644
index 0000000..fd43626
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-win32-mingw32.h
@@ -0,0 +1,28 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/bn_conf.h.in */
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_BN_CONF_H
+# define HEADER_BN_CONF_H
+
+/*
+ * 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? */
+
+/* Only one for the following should be defined */
+#undef SIXTY_FOUR_BIT_LONG
+#define SIXTY_FOUR_BIT
+#undef THIRTY_TWO_BIT
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-win32-msvc.h b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-win32-msvc.h
new file mode 100644
index 0000000..8a96ba0
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/bn_conf/x86_64-win32-msvc.h
@@ -0,0 +1,28 @@
+/* WARNING: do not edit! */
+/* Generated by makefile from ..\crypto\include\internal\bn_conf.h.in */
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_BN_CONF_H
+# define HEADER_BN_CONF_H
+
+/*
+ * 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? */
+
+/* Only one for the following should be defined */
+#undef SIXTY_FOUR_BIT_LONG
+#define SIXTY_FOUR_BIT
+#undef THIRTY_TWO_BIT
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/buildinf.h b/libcrypto/libcrypto/downstream/internal/buildinf.h
new file mode 100644
index 0000000..626305b
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/buildinf.h
@@ -0,0 +1,15 @@
+/* file      : libcrypto/downstream/internal/buildinf.h -*- C -*-
+ * copyright : Copyright (c) 2018-2019 Code Synthesis Ltd
+ * license   : OpenSSL and SSLeay Licenses; see accompanying LICENSE file
+ */
+
+/*
+ * Replace upstream's auto-generated buildinf.h with our own auto-generated
+ * version of it. Note that upstream source files include it as follows:
+ *
+ * #include "buildinf.h"
+ *
+ * We proxy the inclusion for the headers auto-generating machinery to work
+ * properly.
+ */
+#include <libcrypto/buildinf-body.h>
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf.h b/libcrypto/libcrypto/downstream/internal/dso_conf.h
new file mode 100644
index 0000000..1fe74a9
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf.h
@@ -0,0 +1,14 @@
+/* file      : libcrypto/downstream/internal/dso_conf.h -*- C -*-
+ * copyright : Copyright (c) 2018-2019 Code Synthesis Ltd
+ * license   : OpenSSL and SSLeay Licenses; see accompanying LICENSE file
+ */
+
+#ifndef LIBCRYPTO_DOWNSTREAM_INTERNAL_DSO_CONF_H
+#define LIBCRYPTO_DOWNSTREAM_INTERNAL_DSO_CONF_H
+
+/*
+ * Include upstream's auto-generated platform-specific dso_conf.h.
+ */
+#include <internal/dso_conf/platform.h>
+
+#endif /* LIBCRYPTO_DOWNSTREAM_INTERNAL_DSO_CONF_H */
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf.h.in.orig b/libcrypto/libcrypto/downstream/internal/dso_conf.h.in.orig
new file mode 120000
index 0000000..22614df
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf.h.in.orig
@@ -0,0 +1 @@
+../../crypto/include/internal/dso_conf.h.in
+\ No newline at end of file
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf/i686-linux.h b/libcrypto/libcrypto/downstream/internal/dso_conf/i686-linux.h
new file mode 100644
index 0000000..3ace1a9
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf/i686-linux.h
@@ -0,0 +1,19 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/dso_conf.h.in */
+/*
+ * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_DSO_CONF_H
+# define HEADER_DSO_CONF_H
+
+# define DSO_DLFCN
+# define HAVE_DLFCN_H
+# define DSO_EXTENSION ".so"
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf/i686-win32-mingw32.h b/libcrypto/libcrypto/downstream/internal/dso_conf/i686-win32-mingw32.h
new file mode 100644
index 0000000..f3d9f9a
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf/i686-win32-mingw32.h
@@ -0,0 +1,18 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/dso_conf.h.in */
+/*
+ * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_DSO_CONF_H
+# define HEADER_DSO_CONF_H
+
+# define DSO_WIN32
+# define DSO_EXTENSION ".dll"
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf/i686-win32-msvc.h b/libcrypto/libcrypto/downstream/internal/dso_conf/i686-win32-msvc.h
new file mode 100644
index 0000000..7289d1c
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf/i686-win32-msvc.h
@@ -0,0 +1,18 @@
+/* WARNING: do not edit! */
+/* Generated by makefile from ..\crypto\include\internal\dso_conf.h.in */
+/*
+ * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_DSO_CONF_H
+# define HEADER_DSO_CONF_H
+
+# define DSO_WIN32
+# define DSO_EXTENSION ".dll"
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf/platform.h b/libcrypto/libcrypto/downstream/internal/dso_conf/platform.h
new file mode 120000
index 0000000..d732646
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf/platform.h
@@ -0,0 +1 @@
+../platform.h
+\ No newline at end of file
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-freebsd.h b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-freebsd.h
new file mode 100644
index 0000000..3ace1a9
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-freebsd.h
@@ -0,0 +1,19 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/dso_conf.h.in */
+/*
+ * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_DSO_CONF_H
+# define HEADER_DSO_CONF_H
+
+# define DSO_DLFCN
+# define HAVE_DLFCN_H
+# define DSO_EXTENSION ".so"
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-linux.h b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-linux.h
new file mode 100644
index 0000000..3ace1a9
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-linux.h
@@ -0,0 +1,19 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/dso_conf.h.in */
+/*
+ * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_DSO_CONF_H
+# define HEADER_DSO_CONF_H
+
+# define DSO_DLFCN
+# define HAVE_DLFCN_H
+# define DSO_EXTENSION ".so"
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-macos.h b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-macos.h
new file mode 100644
index 0000000..468d3d7
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-macos.h
@@ -0,0 +1,19 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/dso_conf.h.in */
+/*
+ * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_DSO_CONF_H
+# define HEADER_DSO_CONF_H
+
+# define DSO_DLFCN
+# define HAVE_DLFCN_H
+# define DSO_EXTENSION ".dylib"
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-win32-mingw32.h b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-win32-mingw32.h
new file mode 100644
index 0000000..f3d9f9a
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-win32-mingw32.h
@@ -0,0 +1,18 @@
+/* WARNING: do not edit! */
+/* Generated by Makefile from ../crypto/include/internal/dso_conf.h.in */
+/*
+ * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_DSO_CONF_H
+# define HEADER_DSO_CONF_H
+
+# define DSO_WIN32
+# define DSO_EXTENSION ".dll"
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-win32-msvc.h b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-win32-msvc.h
new file mode 100644
index 0000000..7289d1c
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/dso_conf/x86_64-win32-msvc.h
@@ -0,0 +1,18 @@
+/* WARNING: do not edit! */
+/* Generated by makefile from ..\crypto\include\internal\dso_conf.h.in */
+/*
+ * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_DSO_CONF_H
+# define HEADER_DSO_CONF_H
+
+# define DSO_WIN32
+# define DSO_EXTENSION ".dll"
+
+#endif
diff --git a/libcrypto/libcrypto/downstream/internal/platform.h b/libcrypto/libcrypto/downstream/internal/platform.h
new file mode 100644
index 0000000..251c223
--- /dev/null
+++ b/libcrypto/libcrypto/downstream/internal/platform.h
@@ -0,0 +1,73 @@
+/* file      : libcrypto/downstream/internal/platform.h -*- C -*-
+ * copyright : Copyright (c) 2018-2019 Code Synthesis Ltd
+ * license   : OpenSSL and SSLeay Licenses; see accompanying LICENSE file
+ */
+
+/*
+ * This header is used for inclusion of upstream's auto-generated
+ * platform-specific header.
+ *
+ * If there is the auto-generated header foo.h, then the workflow is normally
+ * as follows:
+ *
+ * - Create foo/.
+ *
+ * - Symlink platform.h into foo/.
+ *
+ * - Copy upstream's auto-generated for different platforms foo.h into foo/,
+ *   using the `<architecture>-<os>[-<compiler>].h` naming convention (see
+ *   below for exact names).
+ *
+ * - Create foo.h including foo/platform.h.
+ *
+ * See bn_conf.h for the real example.
+ */
+
+#ifndef _WIN32
+#  if defined(__x86_64__)                                 /* POSIX x86_64 */
+#    if defined(__linux__)
+#      include "x86_64-linux.h"
+#    elif defined(__FreeBSD__)
+#      include "x86_64-freebsd.h"
+#    elif defined(__APPLE__)
+#      include "x86_64-macos.h"
+#    else
+#      error x86_64 architecture is not supported for this OS
+#    endif
+#  elif defined(__i386__)                                 /* POSIX i386 */
+#    if defined(__linux__)
+#      include "i686-linux.h"
+/*
+ * i686 architecture is not currently supported for FreeBSD and Mac OS.
+ */
+/*
+#    elif defined(__FreeBSD__)
+#      include "i686-freebsd.h"
+#    elif defined(__APPLE__)
+#      include "i686-macos.h"
+*/
+#    else
+#      error i686 architecture is not supported for this OS
+#    endif
+#  else
+#    error unknown architecture
+#  endif
+#else
+#  if defined(_WIN64)                                     /* Windows x86_64 */
+#    if defined(_MSC_VER)
+#      include "x86_64-win32-msvc.h"
+#    elif defined(__MINGW32__)
+#      include "x86_64-win32-mingw32.h"
+#    else
+#      error x86_64 architecture is not supported for this compiler
+#    endif
+#  else                                                   /* Windows i386 */
+#    if defined(_MSC_VER)
+#      include "i686-win32-msvc.h"
+#    elif defined(__MINGW32__)
+#      include "i686-win32-mingw32.h"
+#    else
+#      error i686 architecture is not supported for this compiler
+#    endif
+#  endif
+#endif