Add build instruction

docs/en/development/build.md

@@ -10,7 +10,7 @@ sudo apt-get install git pbuilder debhelper lsb-release fakeroot sudo debian-arc
 ## Checkout ClickHouse Sources
 
 ```bash
-git clone --recursive --branch stable https://github.com/yandex/ClickHouse.git
+git clone --recursive --branch master https://github.com/ClickHouse/ClickHouse.git
 cd ClickHouse
 ```
 
@@ -55,7 +55,7 @@ sudo apt-get install gcc-9 g++-9
 
 ### Install from Sources
 
-Look at [utils/ci/build-gcc-from-sources.sh](https://github.com/yandex/ClickHouse/blob/master/utils/ci/build-gcc-from-sources.sh)
+Look at [utils/ci/build-gcc-from-sources.sh](https://github.com/ClickHouse/ClickHouse/blob/master/utils/ci/build-gcc-from-sources.sh)
 
 ## Use GCC 9 for Builds
 
@@ -73,14 +73,12 @@ sudo apt-get install libicu-dev libreadline-dev gperf
 ## Checkout ClickHouse Sources
 
 ```bash
-git clone --recursive git@github.com:yandex/ClickHouse.git
-# or: git clone --recursive https://github.com/yandex/ClickHouse.git
+git clone --recursive git@github.com:ClickHouse/ClickHouse.git
+# or: git clone --recursive https://github.com/ClickHouse/ClickHouse.git
 
 cd ClickHouse
 ```
 
-For the latest stable version, switch to the `stable` branch.
-
 ## Build ClickHouse
 
 ```bash

docs/en/development/build_cross.md

+# How to Build ClickHouse on Linux for Mac OS X
+
+The cross-build for Mac OS X is based on the Build instructions, follow them first.
+
+# Install Clang-8
+
+Follow the instructions from https://apt.llvm.org/ for your Ubuntu or Debian setup.
+For example the commands for Bionic are like:
+
+```bash
+sudo echo "deb [trusted=yes] http://apt.llvm.org/bionic/ llvm-toolchain-bionic-8 main" >> /etc/apt/sources.list
+sudo apt-get install clang-8
+```
+
+# Install Cross-Compilation Toolset
+
+```bash
+mkdir cctools
+
+git clone https://github.com/tpoechtrager/apple-libtapi.git
+cd apple-libtapi
+INSTALLPREFIX=../cctools ./build.sh
+./install.sh
+cd ..
+
+git clone https://github.com/tpoechtrager/cctools-port.git
+cd cctools-port/cctools
+./configure --prefix=../cctools --with-libtapi=../cctools --target=x86_64-apple-darwin
+make install
+cd ..
+
+cd cctools
+wget https://github.com/phracker/MacOSX-SDKs/releases/download/10.14-beta4/MacOSX10.14.sdk.tar.xz
+tar xJf MacOSX10.14.sdk.tar.xz
+```
+
+Let's remember the path where we created `cctools` directory as ${CCTOOLS_PARENT}
+
+# Build ClickHouse
+
+```bash
+cd ClickHouse
+mkdir build-osx
+CC=clang-8 CXX=clang++-8 cmake . -Bbuild-osx -DCMAKE_SYSTEM_NAME=Darwin \
+    -DCMAKE_AR:FILEPATH=${CCTOOLS_PARENT}/cctools/bin/x86_64-apple-darwin-ar \
+    -DCMAKE_RANLIB:FILEPATH=${CCTOOLS_PARENT}/cctools/bin/x86_64-apple-darwin-ranlib \
+    -DLINKER_NAME=${CCTOOLS_PARENT}/cctools/bin/x86_64-apple-darwin-ld \
+    -DSDK_PATH=${CCTOOLS_PARENT}/cctools/MacOSX10.14.sdk \
+    -DUSE_SNAPPY=OFF -DENABLE_SSL=OFF -DENABLE_PROTOBUF=OFF -DENABLE_PARQUET=OFF -DENABLE_READLINE=OFF -DENABLE_ICU=OFF -DENABLE_FASTOPS=OFF
+ninja -C build-osx
+```
+
+The resulting binary will have Mach-O executable format and can't be run on Linux.