From ec4a6cbce7010c57ba79784c3df46c567138fbfd Mon Sep 17 00:00:00 2001
From: Matt Diephouse <matt@diephouse.com>
Date: Sat, 8 Nov 2014 08:41:22 -0500
Subject: [PATCH] Copy scripts from objective-git

---
 script/LICENSE.md             |  18 ++++
 script/README.md              |  82 +++++++++++++++++++
 script/bootstrap              | 123 ++++++++++++++++++++++++++++
 script/cibuild                | 150 ++++++++++++++++++++++++++++++++++
 script/ios_build_functions.sh |  95 +++++++++++++++++++++
 script/schemes.awk            |  10 +++
 script/targets.awk            |  12 +++
 script/update_libgit2         |  34 ++++++++
 script/update_libgit2_ios     |  78 ++++++++++++++++++
 script/update_libssh2_ios     |  55 +++++++++++++
 script/update_libssl_ios      |  75 +++++++++++++++++
 script/xcode_functions.sh     |  30 +++++++
 script/xcodebuild.awk         |  35 ++++++++
 script/xctool.awk             |  25 ++++++
 14 files changed, 822 insertions(+)
 create mode 100644 script/LICENSE.md
 create mode 100644 script/README.md
 create mode 100755 script/bootstrap
 create mode 100755 script/cibuild
 create mode 100755 script/ios_build_functions.sh
 create mode 100644 script/schemes.awk
 create mode 100644 script/targets.awk
 create mode 100755 script/update_libgit2
 create mode 100755 script/update_libgit2_ios
 create mode 100755 script/update_libssh2_ios
 create mode 100755 script/update_libssl_ios
 create mode 100755 script/xcode_functions.sh
 create mode 100644 script/xcodebuild.awk
 create mode 100644 script/xctool.awk

diff --git a/script/LICENSE.md b/script/LICENSE.md
new file mode 100644
index 0000000..8d92384
--- /dev/null
+++ b/script/LICENSE.md
@@ -0,0 +1,18 @@
+**Copyright (c) 2013 Justin Spahr-Summers**
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/script/README.md b/script/README.md
new file mode 100644
index 0000000..f66206f
--- /dev/null
+++ b/script/README.md
@@ -0,0 +1,82 @@
+# objc-build-scripts
+
+This project is a collection of scripts created with two goals:
+
+ 1. To standardize how Objective-C projects are bootstrapped after cloning
+ 1. To easily build Objective-C projects on continuous integration servers
+
+## Scripts
+
+Right now, there are two important scripts: [`bootstrap`](#bootstrap) and
+[`cibuild`](#cibuild). Both are Bash scripts, to maximize compatibility and
+eliminate pesky system configuration issues (like setting up a working Ruby
+environment).
+
+The structure of the scripts on disk is meant to follow that of a typical Ruby
+project:
+
+```
+script/
+    bootstrap
+    cibuild
+```
+
+### bootstrap
+
+This script is responsible for bootstrapping (initializing) your project after
+it's been checked out. Here, you should install or clone any dependencies that
+are required for a working build and development environment.
+
+By default, the script will verify that [xctool][] is installed, then initialize
+and update submodules recursively. If any submodules contain `script/bootstrap`,
+that will be run as well.
+
+To check that other tools are installed, you can set the `REQUIRED_TOOLS`
+environment variable before running `script/bootstrap`, or edit it within the
+script directly. Note that no installation is performed automatically, though
+this can always be added within your specific project.
+
+### cibuild
+
+This script is responsible for building the project, as you would want it built
+for continuous integration. This is preferable to putting the logic on the CI
+server itself, since it ensures that any changes are versioned along with the
+source.
+
+By default, the script will run [`bootstrap`](#bootstrap), look for any Xcode
+workspace or project in the working directory, then build all targets/schemes
+(as found by `xcodebuild -list`) using [xctool][].
+
+You can also specify the schemes to build by passing them into the script:
+
+```sh
+script/cibuild ReactiveCocoa-Mac ReactiveCocoa-iOS
+```
+
+As with the `bootstrap` script, there are several environment variables that can
+be used to customize behavior. They can be set on the command line before
+invoking the script, or the defaults changed within the script directly.
+
+## Getting Started
+
+To add the scripts to your project, read the contents of this repository into
+a `script` folder:
+
+```
+$ git remote add objc-build-scripts https://github.com/jspahrsummers/objc-build-scripts.git
+$ git fetch objc-build-scripts
+$ git read-tree --prefix=script/ -u objc-build-scripts/master
+```
+
+Then commit the changes, to incorporate the scripts into your own repository's
+history. You can also freely tweak the scripts for your specific project's
+needs.
+
+To merge in upstream changes later:
+
+```
+$ git fetch -p objc-build-scripts
+$ git merge --ff --squash -Xsubtree=script objc-build-scripts/master
+```
+
+[xctool]: https://github.com/facebook/xctool
diff --git a/script/bootstrap b/script/bootstrap
new file mode 100755
index 0000000..fa19a60
--- /dev/null
+++ b/script/bootstrap
@@ -0,0 +1,123 @@
+#!/bin/bash
+
+export SCRIPT_DIR=$(dirname "$0")
+
+##
+## Configuration Variables
+##
+
+config ()
+{
+    # A whitespace-separated list of executables that must be present and locatable.
+    : ${REQUIRED_TOOLS="xctool cmake"}
+
+    export REQUIRED_TOOLS
+}
+
+##
+## Bootstrap Process
+##
+
+main ()
+{
+    config
+
+    if [ -n "$REQUIRED_TOOLS" ]
+    then
+        echo "*** Checking dependencies..."
+        check_deps
+    fi
+
+    local submodules=$(git submodule status)
+    local result=$?
+
+    if [ "$result" -ne "0" ]
+    then
+        exit $result
+    fi
+
+    if [ -n "$submodules" ]
+    then
+        echo "*** Updating submodules..."
+        update_submodules
+    fi
+}
+
+check_deps ()
+{
+    for tool in $REQUIRED_TOOLS
+    do
+        which -s "$tool"
+        if [ "$?" -ne "0" ]
+        then
+            echo "*** Error: $tool not found. Please install it and bootstrap again."
+            exit 1
+        fi
+    done
+
+    # Ensure that we have libgit2's dependencies installed.
+    installed=`brew list`
+    libs="libssh2 libtool autoconf automake"
+
+    for lib in $libs
+    do
+        # Skip packages that are already installed.
+        echo "$installed" | grep -q "$lib" && code=$? || code=$?
+
+        if [ "$code" -eq "0" ]
+        then
+            continue
+        elif [ "$code" -ne "1" ]
+        then
+            exit $code
+        fi
+
+        echo "*** Installing $lib with Homebrew..."
+        brew install "$lib"
+    done
+
+    brew_prefix=`brew --prefix`
+    expected_prefix=/usr/local
+
+    if [ "$brew_prefix" != "$expected_prefix" ]
+    then
+        echo "*** Adding soft links into $expected_prefix..."
+
+        products=(lib/libssh2.a include/libssh2.h include/libssh2_sftp.h include/libssh2_publickey.h)
+
+        for product in "${products[@]}"
+        do
+            destination="$expected_prefix/$product"
+            if [ -e "$destination" ]
+            then
+                continue
+            fi
+
+            sudo mkdir -p "$(dirname "$destination")"
+            sudo ln -s "$brew_prefix/$product" "$destination"
+        done
+    fi
+}
+
+bootstrap_submodule ()
+{
+    local bootstrap="script/bootstrap"
+
+    if [ -e "$bootstrap" ]
+    then
+        echo "*** Bootstrapping $name..."
+        "$bootstrap" >/dev/null
+    else
+        update_submodules
+    fi
+}
+
+update_submodules ()
+{
+    git submodule sync --quiet && git submodule update --init && git submodule foreach --quiet bootstrap_submodule
+}
+
+export -f bootstrap_submodule
+export -f update_submodules
+
+main
diff --git a/script/cibuild b/script/cibuild
new file mode 100755
index 0000000..bbc1112
--- /dev/null
+++ b/script/cibuild
@@ -0,0 +1,150 @@
+#!/bin/bash
+
+export SCRIPT_DIR=$(dirname "$0")
+
+##
+## Configuration Variables
+##
+
+SCHEMES="$@"
+
+config ()
+{
+    # The workspace to build.
+    #
+    # If not set and no workspace is found, the -workspace flag will not be passed
+    # to `xctool`.
+    #
+    # Only one of `XCWORKSPACE` and `XCODEPROJ` needs to be set. The former will
+    # take precedence.
+    : ${XCWORKSPACE=$(find_pattern "*.xcworkspace")}
+
+    # The project to build.
+    #
+    # If not set and no project is found, the -project flag will not be passed
+    # to `xctool`.
+    #
+    # Only one of `XCWORKSPACE` and `XCODEPROJ` needs to be set. The former will
+    # take precedence.
+    : ${XCODEPROJ=$(find_pattern "*.xcodeproj")}
+
+    # A bootstrap script to run before building.
+    #
+    # If this file does not exist, it is not considered an error.
+    : ${BOOTSTRAP="$SCRIPT_DIR/bootstrap"}
+
+    # Extra options to pass to xctool.
+    : ${XCTOOL_OPTIONS="RUN_CLANG_STATIC_ANALYZER=NO"}
+
+    # A whitespace-separated list of default schemes to build.
+    #
+    # Individual names can be quoted to avoid word splitting.
+    : ${SCHEMES:=$(xcodebuild -list -project "$XCODEPROJ" 2>/dev/null | awk -f "$SCRIPT_DIR/schemes.awk")}
+
+    export XCWORKSPACE
+    export XCODEPROJ
+    export BOOTSTRAP
+    export XCTOOL_OPTIONS
+    export SCHEMES
+}
+
+##
+## Build Process
+##
+
+main ()
+{
+    config
+
+    if [ -f "$BOOTSTRAP" ]
+    then
+        echo "*** Bootstrapping..."
+        "$BOOTSTRAP" || exit $?
+    fi
+
+    echo "*** The following schemes will be built:"
+    echo "$SCHEMES" | xargs -n 1 echo "  "
+    echo
+
+    echo "$SCHEMES" | xargs -n 1 | (
+        local status=0
+
+        while read scheme
+        do
+            build_scheme "$scheme" || status=1
+        done
+
+        exit $status
+    )
+}
+
+find_pattern ()
+{
+    ls -d $1 2>/dev/null | head -n 1
+}
+
+run_xctool ()
+{
+    if [ -n "$XCWORKSPACE" ]
+    then
+        xctool -workspace "$XCWORKSPACE" $XCTOOL_OPTIONS "$@" 2>&1
+    elif [ -n "$XCODEPROJ" ]
+    then
+        xctool -project "$XCODEPROJ" $XCTOOL_OPTIONS "$@" 2>&1
+    else
+        echo "*** No workspace or project file found."
+        exit 1
+    fi
+}
+
+parse_build ()
+{
+    awk -f "$SCRIPT_DIR/xctool.awk" 2>&1 >/dev/null
+}
+
+build_scheme ()
+{
+    local scheme=$1
+
+    echo "*** Building and testing $scheme..."
+    echo
+
+    local sdkflag=
+    local action=test
+
+    # Determine whether we can run unit tests for this target.
+    run_xctool -scheme "$scheme" run-tests | parse_build
+
+    local awkstatus=$?
+
+    if [ "$awkstatus" -eq "1" ]
+    then
+        # SDK not found, try for iphonesimulator.
+        sdkflag="-sdk iphonesimulator"
+
+        # Determine whether the unit tests will run with iphonesimulator
+        run_xctool $sdkflag -scheme "$scheme" run-tests | parse_build
+
+        awkstatus=$?
+
+        if [ "$awkstatus" -ne "0" ]
+        then
+            # Unit tests will not run on iphonesimulator.
+            sdkflag=""
+        fi
+    fi
+
+    if [ "$awkstatus" -ne "0" ]
+    then
+        # Unit tests aren't supported.
+        action=build
+    fi
+
+    run_xctool $sdkflag -scheme "$scheme" $action
+}
+
+export -f build_scheme
+export -f run_xctool
+export -f parse_build
+
+main
diff --git a/script/ios_build_functions.sh b/script/ios_build_functions.sh
new file mode 100755
index 0000000..36f5b14
--- /dev/null
+++ b/script/ios_build_functions.sh
@@ -0,0 +1,95 @@
+#!/bin/bash
+
+SCRIPT_DIR=$(dirname "$0")
+source "${SCRIPT_DIR}/xcode_functions.sh"
+
+function setup_build_environment ()
+{
+    # augment path to help it find cmake installed in /usr/local/bin,
+    # e.g. via brew. Xcode's Run Script phase doesn't seem to honor
+    # ~/.MacOSX/environment.plist
+    PATH="/usr/local/bin:/opt/boxen/homebrew/bin:$PATH"
+    
+    pushd "$SCRIPT_DIR/.." > /dev/null
+    ROOT_PATH="$PWD"
+    popd > /dev/null
+
+    CLANG="/usr/bin/xcrun clang"
+    CC="${CLANG}"
+    CPP="${CLANG} -E"
+
+    # We need to clear this so that cmake doesn't have a conniption
+    MACOSX_DEPLOYMENT_TARGET=""
+
+    XCODE_MAJOR_VERSION=$(xcode_major_version)
+    
+    CAN_BUILD_64BIT="0"
+
+    # If IPHONEOS_DEPLOYMENT_TARGET has not been specified
+    # setup reasonable defaults to allow running of a build script
+    # directly (ie not from an Xcode proj)
+    if [ -z "${IPHONEOS_DEPLOYMENT_TARGET}" ]
+    then
+        IPHONEOS_DEPLOYMENT_TARGET="6.0"
+    fi
+    
+    # Determine if we can be building 64-bit binaries
+    if [ "${XCODE_MAJOR_VERSION}" -ge "5" ] && [ $(echo ${IPHONEOS_DEPLOYMENT_TARGET} '>=' 6.0 | bc -l) == "1" ]
+    then
+        CAN_BUILD_64BIT="1"
+    fi
+
+    ARCHS="i386 armv7 armv7s"
+    if [ "${CAN_BUILD_64BIT}" -eq "1" ]
+    then
+        # For some stupid reason cmake needs simulator
+        # builds to be first
+        ARCHS="x86_64 ${ARCHS} arm64"
+    fi
+}
+
+function build_all_archs ()
+{
+    setup_build_environment
+    
+    local setup=$1
+    local build_arch=$2
+    local finish_build=$3
+
+    # run the prepare function
+    eval $setup
+
+    echo "Building for ${ARCHS}"
+
+    for ARCH in ${ARCHS}
+    do
+        if [ "${ARCH}" == "i386" ] || [ "${ARCH}" == "x86_64" ]
+        then
+            PLATFORM="iphonesimulator"
+        else
+            PLATFORM="iphoneos"
+        fi
+
+        SDKVERSION=$(ios_sdk_version)
+
+        if [ "${ARCH}" == "arm64" ]
+        then
+            HOST="aarch64-apple-darwin"
+        else
+            HOST="${ARCH}-apple-darwin"
+        fi
+
+        SDKNAME="${PLATFORM}${SDKVERSION}"
+        SDKROOT="$(ios_sdk_path ${SDKNAME})"
+        
+        echo "Building ${LIBRARY_NAME} for ${SDKNAME} ${ARCH}"
+        echo "Please stand by..."
+
+        # run the per arch build command
+        eval $build_arch
+    done
+
+    # finish the build (usually lipo)
+    eval $finish_build
+}
+
diff --git a/script/schemes.awk b/script/schemes.awk
new file mode 100644
index 0000000..4c94df9
--- /dev/null
+++ b/script/schemes.awk
@@ -0,0 +1,10 @@
+BEGIN {
+    FS = "\n";
+}
+
+/Schemes:/ {
+    while (getline && $0 != "") {
+        sub(/^ +/, "");
+        print "'" $0 "'";
+    }
+}
diff --git a/script/targets.awk b/script/targets.awk
new file mode 100644
index 0000000..117660d
--- /dev/null
+++ b/script/targets.awk
@@ -0,0 +1,12 @@
+BEGIN {
+    FS = "\n";
+}
+
+/Targets:/ {
+    while (getline && $0 != "") {
+        if ($0 ~ /Tests/) continue;
+
+        sub(/^ +/, "");
+        print "'" $0 "'";
+    }
+}
diff --git a/script/update_libgit2 b/script/update_libgit2
new file mode 100755
index 0000000..1b87423
--- /dev/null
+++ b/script/update_libgit2
@@ -0,0 +1,34 @@
+#!/bin/sh
+
+set -e
+
+# augment path to help it find cmake installed in /usr/local/bin,
+# e.g. via brew. Xcode's Run Script phase doesn't seem to honor
+# ~/.MacOSX/environment.plist
+PATH="/usr/local/bin:$PATH"
+
+if [ "External/libgit2.a" -nt "External/libgit2" ]
+then
+    echo "No update needed."
+    exit 0
+fi
+
+cd "External/libgit2"
+
+if [ -d "build" ]; then
+    rm -rf "build"
+fi
+
+mkdir build
+cd build
+
+cmake -DBUILD_SHARED_LIBS:BOOL=OFF -DBUILD_CLAR:BOOL=OFF -DTHREADSAFE:BOOL=ON ..
+cmake --build .
+
+product="libgit2.a"
+install_path="../../${product}"
+if [ "${product}" -nt "${install_path}" ]; then
+    cp -v "${product}" "${install_path}"
+fi
+
+echo "libgit2 has been updated."
diff --git a/script/update_libgit2_ios b/script/update_libgit2_ios
new file mode 100755
index 0000000..dfebd3b
--- /dev/null
+++ b/script/update_libgit2_ios
@@ -0,0 +1,78 @@
+#!/bin/bash
+
+set -e
+
+# source the common build functions
+SCRIPT_DIR=$(dirname "$0")
+source "${SCRIPT_DIR}/ios_build_functions.sh"
+
+function setup ()
+{
+    if [ "${ROOT_PATH}/External/libgit2-ios/libgit2-ios.a" -nt "${ROOT_PATH}/External/libgit2" ]
+    then
+        echo "No update needed."
+        exit 0
+    fi
+
+    LIBRARY_NAME="libgit2"
+    LIB_PATH="${ROOT_PATH}/External/libgit2-ios"
+    rm -rf "${LIB_PATH}"
+
+    pushd "${ROOT_PATH}/External/libgit2" > /dev/null
+}
+
+function build_libgit2 ()
+{
+    rm -rf "build"
+    mkdir "build"
+
+    pushd "build" > /dev/null
+
+    # LOL Cmake
+    if [ "${ARCH}" != "i386" ] && [ "${ARCH}" != "x86_64" ]
+    then
+        SYS_ROOT="-DCMAKE_OSX_SYSROOT=${SDKROOT}"
+    fi
+
+    # install the each built arch somewhere sane
+    INSTALL_PREFIX="${LIB_PATH}/${SDKNAME}-${ARCH}.sdk"
+
+    mkdir -p "${INSTALL_PREFIX}"
+
+    LOG="${INSTALL_PREFIX}/build-libgit2.log"
+    echo "$LOG"
+
+    cmake -DCMAKE_C_COMPILER=clang \
+        -DCMAKE_C_COMPILER_WORKS:BOOL=ON \
+        -DBUILD_SHARED_LIBS:BOOL=OFF \
+        -DOPENSSL_INCLUDE_DIR:PATH=../../External/ios-openssl/include/ \
+        -DCMAKE_LIBRARY_PATH:PATH=../../External/libssh2-ios/lib/ \
+        -DCMAKE_INCLUDE_PATH:PATH=../../External/libssh2-ios/include/libssh2/ \
+        -DOPENSSL_SSL_LIBRARY:FILEPATH=../../External/ios-openssl/lib/libssl.a \
+        -DCMAKE_LIBRARY_PATH:PATH="${SDKROOT}/usr/lib/" \
+        -DOPENSSL_CRYPTO_LIBRARY:FILEPATH=../../External/ios-openssl/lib/libcrypto.a \
+        -DCMAKE_INSTALL_PREFIX:PATH="${INSTALL_PREFIX}/" \
+        -DBUILD_CLAR:BOOL=OFF \
+        -DTHREADSAFE:BOOL=ON \
+        "${SYS_ROOT}" \
+        -DCMAKE_OSX_ARCHITECTURES:STRING="${ARCH}" \
+        .. >> "${LOG}" 2>&1
+    cmake --build . --target install >> "${LOG}" 2>&1
+
+    # push the built library into the list
+    BUILT_LIB_PATHS+=("${INSTALL_PREFIX}/lib/libgit2.a")
+    popd > /dev/null
+}
+
+function fat_binary ()
+{
+    echo "Building fat binary..."
+
+    lipo -create "${BUILT_LIB_PATHS[@]}" -output "${ROOT_PATH}/External/libgit2-ios/libgit2-ios.a"
+
+    echo "Building done."
+
+    popd > /dev/null
+}
+
+build_all_archs setup build_libgit2 fat_binary
diff --git a/script/update_libssh2_ios b/script/update_libssh2_ios
new file mode 100755
index 0000000..18d8a9f
--- /dev/null
+++ b/script/update_libssh2_ios
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+set -e
+
+# source the common build functions
+SCRIPT_DIR=$(dirname "$0")
+source "${SCRIPT_DIR}/ios_build_functions.sh"
+
+function setup ()
+{
+    if [ -f "${ROOT_PATH}/External/libssh2-ios/lib/libssh2-ios.a" ]
+    then
+        echo "No update needed."
+        exit 0
+    fi
+    LIBRARY_NAME="libssh2"
+}
+
+function build_ssh2 () 
+{
+    mkdir -p "${ROOT_PATH}/External/libssh2-ios/lib" "${ROOT_PATH}/External/libssh2-ios/lib" "${ROOT_PATH}/External/libssh2-ios/src"
+
+    rm -rf "${ROOT_PATH}/External/libssh2-ios/src/libssh2"
+    cp -R "${ROOT_PATH}/External/libssh2" "${ROOT_PATH}/External/libssh2-ios/src/"
+    pushd "${ROOT_PATH}/External/libssh2-ios/src/libssh2" > /dev/null
+
+    export CFLAGS="-arch ${ARCH} -pipe -no-cpp-precomp -isysroot ${SDKROOT} -miphoneos-version-min=${IPHONEOS_DEPLOYMENT_TARGET}"
+    export CPPFLAGS="-arch ${ARCH} -pipe -no-cpp-precomp -isysroot ${SDKROOT} -miphoneos-version-min=${IPHONEOS_DEPLOYMENT_TARGET}"
+
+    mkdir -p "${ROOT_PATH}/External/libssh2-ios/bin/${SDKNAME}-${ARCH}.sdk"
+    LOG="${ROOT_PATH}/External/libssh2-ios/bin/${SDKNAME}-${ARCH}.sdk/build-libssh2.log"
+
+    echo "${LOG}"
+
+    ./buildconf >> "${LOG}" 2>&1
+    ./configure --host=${HOST} --prefix="${ROOT_PATH}/External/libssh2-ios/bin/${SDKNAME}-${ARCH}.sdk" --with-openssl --with-libssl-prefix="${ROOT_PATH}/External/ios-openssl" --disable-shared --enable-static >> "${LOG}" 2>&1
+    make >> "${LOG}" 2>&1
+    make install >> "${LOG}" 2>&1
+    popd > /dev/null
+
+    BUILT_LIBS+=("${ROOT_PATH}/External/libssh2-ios/bin/${SDKNAME}-${ARCH}.sdk/lib/libssh2.a")
+}
+
+function fat_binary ()
+{
+    echo "Building fat binary..."
+
+    lipo -create "${BUILT_LIBS[@]}" -output "${ROOT_PATH}/External/libssh2-ios/lib/libssh2-ios.a"
+    mkdir -p "${ROOT_PATH}/External/libssh2-ios/include/libssh2"
+    cp -R "${ROOT_PATH}/External/libssh2-ios/bin/iphonesimulator${SDKVERSION}-i386.sdk/include/libssh2.h" "${ROOT_PATH}/External/libssh2-ios/include/libssh2/"
+
+    echo "Building done."
+}
+
+build_all_archs setup build_ssh2 fat_binary
diff --git a/script/update_libssl_ios b/script/update_libssl_ios
new file mode 100755
index 0000000..3d3a209
--- /dev/null
+++ b/script/update_libssl_ios
@@ -0,0 +1,75 @@
+#!/bin/bash
+
+# source the common build functions
+SCRIPT_DIR=$(dirname "$0")
+source "${SCRIPT_DIR}/ios_build_functions.sh"
+
+function setup ()
+{
+    if [ -f "${ROOT_PATH}/External/ios-openssl/lib/libssl.a" ] && [ -f "${ROOT_PATH}/External/ios-openssl/lib/libcrypto.a" ] && [ -d "${ROOT_PATH}/External/ios-openssl/include" ]
+    then
+        echo "No update needed."
+        exit 0
+    fi
+
+    LIBRARY_NAME="OpenSSL"
+
+    rm -rf "${ROOT_PATH}/External/ios-openssl/include" "External/ios-openssl/lib"
+}
+
+function cleanup () 
+{
+    rm -rf "/tmp/openssl"
+    rm -rf "/tmp/openssl-*.log"
+}
+
+function build_ssl () 
+{
+    rm -rf "/tmp/openssl"
+    cp -r "${ROOT_PATH}/External/openssl" "/tmp/"
+    pushd "/tmp/openssl" > /dev/null
+
+    LOG="/tmp/openssl-${ARCH}.log"
+
+    if [ "${ARCH}" == "arm64" ] || [ "${ARCH}" == "x86_64" ]
+    then
+        HOST="BSD-generic64"
+        CONFIG="no-gost no-asm enable-ec_nistp_64_gcc_128"
+    else
+        HOST="BSD-generic32"
+        CONFIG="no-gost no-asm"
+        perl -i -pe 's|static volatile sig_atomic_t intr_signal|static volatile int intr_signal|' crypto/ui/ui_openssl.c
+    fi
+    echo "$LOG"
+
+    ./Configure ${HOST} ${CONFIG} --openssldir="/tmp/openssl-${ARCH}" >> "${LOG}" 2>&1
+    perl -i -pe "s|^CC= gcc|CC= ${CLANG} -miphoneos-version-min=${IPHONEOS_DEPLOYMENT_TARGET} -arch ${ARCH} |g" Makefile >> "${LOG}" 2>&1
+    perl -i -pe "s|^CFLAG= (.*)|CFLAG= -isysroot ${SDKROOT} \$1|g" Makefile >> "${LOG}" 2>&1
+    make >> "${LOG}" 2>&1
+
+    make install_sw >> "${LOG}" 2>&1
+    popd > /dev/null
+    rm -rf "/tmp/openssl"
+
+    BUILT_CRYPTO_PATHS+=("/tmp/openssl-${ARCH}/lib/libcrypto.a")
+    BUILT_SSL_PATHS+=("/tmp/openssl-${ARCH}/lib/libssl.a")
+}
+
+function fat_binary ()
+{
+    echo "Building fat binary..."
+
+    mkdir -p "${ROOT_PATH}/External/ios-openssl/include"
+    cp -r /tmp/openssl-i386/include/openssl "${ROOT_PATH}/External/ios-openssl/include/"
+
+    mkdir -p "${ROOT_PATH}/External/ios-openssl/lib"
+
+    lipo -create "${BUILT_CRYPTO_PATHS[@]}" -output "${ROOT_PATH}/External/ios-openssl/lib/libcrypto.a"
+    lipo -create "${BUILT_SSL_PATHS[@]}" -output "${ROOT_PATH}/External/ios-openssl/lib/libssl.a"
+
+    echo "Building done."
+}
+
+cleanup
+build_all_archs setup build_ssl fat_binary
+cleanup
diff --git a/script/xcode_functions.sh b/script/xcode_functions.sh
new file mode 100755
index 0000000..e87697c
--- /dev/null
+++ b/script/xcode_functions.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# Returns the version # of xcodebuild
+# eg. (4.6.3, 5.0, 5.0.1)
+function xcode_version ()
+{
+    /usr/bin/xcodebuild -version 2> /dev/null | head -n 1 | awk '{ print $2 }'
+}
+
+# Returns the major version of xcodebuild
+# eg. (4, 5, 6)
+function xcode_major_version ()
+{
+    xcode_version | awk -F '.' '{ print $1 }'
+}
+
+# Returns the latest iOS SDK version available
+# via xcodebuild
+function ios_sdk_version ()
+{
+    # This relies on the fact that the latest iPhone SDK
+    # is the last thing listed before the Xcode version.
+    /usr/bin/xcodebuild -version -sdk 2> /dev/null | grep SDKVersion | tail -n 1 |  awk '{ print $2 }' 
+}
+
+# Returns the path to the specified iOS SDK name
+function ios_sdk_path ()
+{
+    /usr/bin/xcodebuild -version -sdk 2> /dev/null | grep -i $1 | grep 'Path:' | awk '{ print $2 }'
+}
diff --git a/script/xcodebuild.awk b/script/xcodebuild.awk
new file mode 100644
index 0000000..c746b09
--- /dev/null
+++ b/script/xcodebuild.awk
@@ -0,0 +1,35 @@
+# Exit statuses:
+#
+# 0 - No errors found.
+# 1 - Build or test failure. Errors will be logged automatically.
+# 2 - Untestable target. Retry with the "build" action.
+
+BEGIN {
+    status = 0;
+}
+
+{
+    print;
+    fflush(stdout);
+}
+
+/is not valid for Testing/ {
+    exit 2;
+}
+
+/[0-9]+: (error|warning):/ {
+    errors = errors $0 "\n";
+}
+
+/(TEST|BUILD) FAILED/ {
+    status = 1;
+}
+
+END {
+    if (length(errors) > 0) {
+        print "\n*** All errors:\n" errors;
+    }
+
+    fflush(stdout);
+    exit status;
+}
diff --git a/script/xctool.awk b/script/xctool.awk
new file mode 100644
index 0000000..f613258
--- /dev/null
+++ b/script/xctool.awk
@@ -0,0 +1,25 @@
+# Exit statuses:
+#
+# 0 - No errors found.
+# 1 - Wrong SDK. Retry with SDK `iphonesimulator`.
+# 2 - Missing target.
+
+BEGIN {
+    status = 0;
+}
+
+{
+    print;
+}
+
+/Testing with the '(.+)' SDK is not yet supported/ {
+    status = 1;
+}
+
+/does not contain a target named/ {
+    status = 2;
+}
+
+END {
+    exit status;
+}