From ec65e12ee61ca49f563613e2a6a5f75d60f9bf84 Mon Sep 17 00:00:00 2001
From: arvidn <arvid@cs.umu.se>
Date: Wed, 12 Jul 2017 00:34:48 -0700
Subject: [PATCH] add boost-build feature to link against libcrypto and libssl
 on windows #1931

---
 Jamfile           | 29 +++++++++++++++++++++--------
 appveyor.yml      | 12 ++++++------
 docs/building.rst |  8 ++++++++
 3 files changed, 35 insertions(+), 14 deletions(-)

diff --git a/Jamfile b/Jamfile
index 99fcb5e65..496d51329 100644
--- a/Jamfile
+++ b/Jamfile
@@ -67,27 +67,38 @@ rule linking ( properties * )
 	local result ;
 
 	# openssl libraries, if enabled
+	# exclude gcc from a regular windows build to make mingw
+	# link against the regular unix library name
 	if <crypto>openssl in $(properties)
 	{
-		# exclude gcc from a regular windows build to make mingw
-		# link against the regular unix library name
-		if <target-os>windows in $(properties)
-		   && ! <toolset>gcc in $(properties)
+		if <openssl-version>pre1.1 in $(properties)
+			&& <target-os>windows in $(properties)
+			&& ! <toolset>gcc in $(properties)
 		{
 			result += <library>ssleay32
 				<library>libeay32
-				<library>advapi32
-				<library>user32
-				<library>shell32
-				<library>gdi32
 			;
 		}
 		else
 		{
+			# on windows the library names were changed to be in line with other
+			# system starting with OpenSSL 1.1
 			result += <library>crypto <library>ssl ;
 		}
 	}
 
+	# windows needs some more libraries when using openSSL
+	if <crypto>openssl in $(properties)
+		&& <target-os>windows in $(properties)
+		&& ! <toolset>gcc in $(properties)
+	{
+		result += <library>advapi32
+			<library>user32
+			<library>shell32
+			<library>gdi32
+		;
+	}
+
 	if <simulator>on in $(properties)
 	{
 		result += <library>/libsimulator//simulator ;
@@ -471,6 +482,8 @@ feature crypto : built-in openssl gcrypt : composite propagated ;
 feature.compose <crypto>openssl : <define>TORRENT_USE_OPENSSL ;
 feature.compose <crypto>gcrypt : <define>TORRENT_USE_GCRYPT ;
 
+feature openssl-version : 1.1 pre1.1 : composite propagated ;
+
 feature resolve-countries : on off : composite propagated link-incompatible ;
 feature.compose <resolve-countries>off : <define>TORRENT_DISABLE_RESOLVE_COUNTRIES ;
 
diff --git a/appveyor.yml b/appveyor.yml
index 30b100eb3..808ce94ab 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -117,12 +117,12 @@ build_script:
 - if not defined x64 (
   cd %ROOT_DIRECTORY%\examples
   & if %compiler% == msvc-14.0 (
-    b2.exe --hash -j2 address-model=32 %compiler% variant=%variant%  debug-iterators=on picker-debugging=on invariant-checks=full linkflags=%linkflags% include=%include% link=shared bt-get bt-get2
+    b2.exe --hash -j2 openssl-version=pre1.1 address-model=32 %compiler% variant=%variant% debug-iterators=on picker-debugging=on invariant-checks=full linkflags=%linkflags% include=%include% link=shared bt-get bt-get2
   ) else (
-    b2.exe --hash -j2 address-model=32 %compiler% variant=%variant% debug-iterators=on picker-debugging=on invariant-checks=full linkflags=%linkflags% include=%include% link=shared
+    b2.exe --hash -j2 openssl-version=pre1.1 address-model=32 %compiler% variant=%variant% debug-iterators=on picker-debugging=on invariant-checks=full linkflags=%linkflags% include=%include% link=shared
   )
   & cd %ROOT_DIRECTORY%\bindings\python
-  & b2.exe --hash -j2 %compiler% stage_module install-dependencies=on variant=%variant% libtorrent-link=shared linkflags=%linkflags% include=%include%
+  & b2.exe --hash -j2 openssl-version=pre1.1 %compiler% stage_module install-dependencies=on variant=%variant% libtorrent-link=shared linkflags=%linkflags% include=%include%
   & python test.py
   & if defined python_package ( python setup.py --bjam bdist_msi )
   )
@@ -130,13 +130,13 @@ build_script:
 test_script:
 - cd %ROOT_DIRECTORY%\test
 - if defined x64 (
-  appveyor-retry b2.exe --hash -j2 address-model=64 win-tests %compiler% variant=%variant% link=shared linkflags=%linkflags% include=%include%
+  appveyor-retry b2.exe --hash -j2 openssl-version=pre1.1 address-model=64 win-tests %compiler% variant=%variant% link=shared linkflags=%linkflags% include=%include%
   ) else (
-  appveyor-retry b2.exe --hash -j2 address-model=32 win-tests %compiler% variant=%variant% link=shared linkflags=%linkflags% include=%include%
+  appveyor-retry b2.exe --hash -j2 openssl-version=pre1.1 address-model=32 win-tests %compiler% variant=%variant% link=shared linkflags=%linkflags% include=%include%
   )
 - if defined sim (
   cd %ROOT_DIRECTORY%\simulation
-  & b2.exe --hash -j2 link=shared crypto=built-in %compiler%
+  & b2.exe --hash -j2 openssl-version=pre1.1 link=shared crypto=built-in %compiler%
   )
 
 artifacts:
diff --git a/docs/building.rst b/docs/building.rst
index 59963d9a6..dc6706495 100644
--- a/docs/building.rst
+++ b/docs/building.rst
@@ -283,6 +283,14 @@ Build features:
 |                          | * ``gcrypt`` - links against libgcrypt to use for  |
 |                          |   SHA-1 hashing.                                   |
 +--------------------------+----------------------------------------------------+
+| ``openssl-version``      | This can be used on windows to link against the    |
+|                          | special OpenSSL library names used on windows      |
+|                          | prior to OpenSSL 1.1.                              |
+|                          | * ``1.1`` - link against the normal openssl        |
+|                          |   library name. (default)                          |
+|                          | * ``pre1.1`` - link against the old windows names  |
+|                          |   (i.e. ``ssleay32`` and ``libeay32``.             |
++--------------------------+----------------------------------------------------+
 | ``allocator``            | * ``pool`` - default, uses pool allocators for     |
 |                          |   send buffers.                                    |
 |                          | * ``system`` - uses ``malloc()`` and ``free()``    |