From f3a61007a7094841e9137a393474f355e0bbeafe Mon Sep 17 00:00:00 2001
From: "Solomenchuk, Vlad" <vlad.solomenchuk@sap.com>
Date: Tue, 6 Sep 2016 12:26:59 -0700
Subject: [PATCH] build instruction for iOS

---
 build/CMakeLists.txt    |  9 ++++-
 docs/build_notes_ios.md | 85 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 93 insertions(+), 1 deletion(-)
 create mode 100644 docs/build_notes_ios.md

diff --git a/build/CMakeLists.txt b/build/CMakeLists.txt
index f9f21fd4..dda0a67c 100644
--- a/build/CMakeLists.txt
+++ b/build/CMakeLists.txt
@@ -187,7 +187,14 @@ endif()
 # TODO: once CMake 3.1+ becomes mainstream, see e.g. http://stackoverflow.com/a/29871891/673826
 # use imported Threads::Threads instead
 set(THREADS_PREFER_PTHREAD_FLAG ON)
-find_package ( Threads REQUIRED )
+if (IOS)
+  set(CMAKE_THREAD_LIBS_INIT "-lpthread")
+  set(CMAKE_HAVE_THREADS_LIBRARY 1)
+  set(CMAKE_USE_WIN32_THREADS_INIT 0)
+  set(CMAKE_USE_PTHREADS_INIT 1)
+else()
+  find_package ( Threads REQUIRED )
+endif()
 if(THREADS_HAVE_PTHREAD_ARG) # compile time flag
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
 endif()
diff --git a/docs/build_notes_ios.md b/docs/build_notes_ios.md
new file mode 100644
index 00000000..26688d21
--- /dev/null
+++ b/docs/build_notes_ios.md
@@ -0,0 +1,85 @@
+Building on iOS
+===================
+
+How to build i2pd for iOS 9 and iOS Simulator 386/x64
+
+Prerequisites
+--------------
+
+XCode7+, cmake 3.2+
+
+Dependencies
+--------------
+- precompiled openssl
+- precompiled boost with modules `filesystem`, `program_options`, `date_time` and `system`
+- ios-cmake toolchain from https://github.com/vovasty/ios-cmake.git
+
+Building
+------------------------
+Assume you have folder structure
+
+```
+lib
+	libboost_date_time.a
+	libboost_filesystem.a
+	libboost_program_options.a
+	libboost_system.a
+	libboost.a
+	libcrypto.a
+	libssl.a
+include
+	boost
+	openssl
+ios-cmake
+i2pd
+```
+
+
+```bash
+mkdir -p build/simulator/lib build/ios/lib include/i2pd
+
+pushd build/simulator && \
+cmake   -DIOS_PLATFORM=SIMULATOR \
+        -DPATCH=/usr/bin/patch \
+        -DCMAKE_BUILD_TYPE=Release \
+        -DCMAKE_TOOLCHAIN_FILE=../../ios-cmake/toolchain/iOS.cmake \
+        -DWITH_STATIC=yes \
+        -DWITH_BINARY=no \
+        -DBoost_INCLUDE_DIR=../../include \
+        -DOPENSSL_INCLUDE_DIR=../../include \
+        -DBoost_LIBRARY_DIR=../../lib \
+        -DOPENSSL_SSL_LIBRARY=../../lib/libssl.a \
+        -DOPENSSL_CRYPTO_LIBRARY=../../lib/libcrypto.a \
+        ../../i2pd/build && \
+make -j16 VERBOSE=1 && \
+popd
+
+pushd build/ios
+cmake   -DIOS_PLATFORM=OS \
+        -DPATCH=/usr/bin/patch \
+        -DCMAKE_BUILD_TYPE=Release \
+        -DCMAKE_TOOLCHAIN_FILE=../../ios-cmake/toolchain/iOS.cmake \
+        -DWITH_STATIC=yes \
+        -DWITH_BINARY=no \
+        -DBoost_INCLUDE_DIR=../../include \
+        -DOPENSSL_INCLUDE_DIR=../../include \
+        -DBoost_LIBRARY_DIR=../../lib \
+        -DOPENSSL_SSL_LIBRARY=../../lib/libssl.a \
+        -DOPENSSL_CRYPTO_LIBRARY=../../lib/libcrypto.a \
+        ../../i2pd/build && \
+make -j16 VERBOSE=1 && \
+popd
+
+libtool -static -o lib/libi2pdclient.a build/*/libi2pdclient.a
+libtool -static -o lib/libi2pd.a build/*/libi2pd.a
+
+cp i2pd/*.h include/i2pd
+```
+
+Include into project
+---------------------------
+1. add all libraries in `lib` folder to `Project linked frameworks`.
+2. add `libc++` and `libz` libraries from system libraries to `Project linked frameworks`.
+3. add path to i2p headers to your `Headers search paths`
+
+Alternatively you may use swift wrapper https://github.com/vovasty/SwiftyI2P.git
\ No newline at end of file