From 22d6374ce7151ad030a3194edf2cb37a30318820 Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Wed, 9 Mar 2016 01:12:47 -0500
Subject: [PATCH] Added Android and embedded environment and test script

---
 setenv-android.sh  | 341 +++++++++++++++++++++++++++++++++++++++++++++
 setenv-embedded.sh | 130 +++++++++++++++++
 2 files changed, 471 insertions(+)
 create mode 100755 setenv-android.sh
 create mode 100755 setenv-embedded.sh

diff --git a/setenv-android.sh b/setenv-android.sh
new file mode 100755
index 00000000..234b0fd7
--- /dev/null
+++ b/setenv-android.sh
@@ -0,0 +1,341 @@
+#!/usr/bin/env bash
+
+# ====================================================================
+# Sets the cross compile environment for Android
+# Based upon OpenSSL's setenv-android.sh (by TH, JW, and SM).
+#
+# Crypto++ Library is copyrighted as a compilation and (as of version 5.6.2)
+# licensed under the Boost Software License 1.0, while the individual files
+# in the compilation are all public domain.
+#
+# See http://www.cryptopp.com/wiki/Android_(Command_Line) for more details
+# ====================================================================
+
+unset IS_CROSS_COMPILE
+
+unset IS_IOS
+unset IS_ANDROID
+unset IS_ARM_EMBEDDED
+
+unset AOSP_FLAGS
+unset AOSP_SYSROOT
+unset AOSP_STL_INC
+unset AOSP_STL_LIB
+unset AOSP_BITS_INC
+
+# Set AOSP_TOOLCHAIN_SUFFIX to your preference of tools and STL library.
+#   Note: 4.9 is required for the latest architectures, like ARM64/AARCH64.
+# AOSP_TOOLCHAIN_SUFFIX=4.8
+# AOSP_TOOLCHAIN_SUFFIX=4.9
+if [ -z "$AOSP_TOOLCHAIN_SUFFIX" ]; then
+	AOSP_TOOLCHAIN_SUFFIX=4.9
+fi
+
+# Set AOSP_API to the API you want to use. 'armeabi' and 'armeabi-v7a' need
+#   API 3 (or above), 'mips' and 'x86' need API 9 (or above), etc.
+# AOSP_API="android-3"     # Android 1.5 and above
+# AOSP_API="android-4"     # Android 1.6 and above
+# AOSP_API="android-5"     # Android 2.0 and above
+# AOSP_API="android-8"     # Android 2.2 and above
+# AOSP_API="android-9"     # Android 2.3 and above
+# AOSP_API="android-14"    # Android 4.0 and above
+# AOSP_API="android-18"    # Android 4.3 and above
+# AOSP_API="android-19"    # Android 4.4 and above
+# AOSP_API="android-21"    # Android 5.0 and above
+# AOSP_API="android-23"    # Android 6.0 and above
+if [ -z "$AOSP_API" ]; then
+	AOSP_API="android-21"
+fi
+
+#####################################################################
+
+# ANDROID_NDK_ROOT should always be set by the user (even when not running this script)
+#   http://groups.google.com/group/android-ndk/browse_thread/thread/a998e139aca71d77.
+# If the user did not specify the NDK location, try and pick it up. We expect something
+#   like ANDROID_NDK_ROOT=/opt/android-ndk-r10e or ANDROID_NDK_ROOT=/usr/local/android-ndk-r10e.
+
+if [ -z "$ANDROID_NDK_ROOT" ]; then
+	ANDROID_NDK_ROOT=$(find /opt -maxdepth 1 -type d -name android-ndk-r10* 2>/dev/null | tail -1)
+
+	if [ -z "$ANDROID_NDK_ROOT" ]; then
+		ANDROID_NDK_ROOT=$(find /usr/local -maxdepth 1 -type d -name android-ndk-r10* 2>/dev/null | tail -1)
+	fi
+	if [ -z "$ANDROID_NDK_ROOT" ]; then
+		ANDROID_NDK_ROOT=$(find $HOME -maxdepth 1 -type d -name android-ndk-r10* 2>/dev/null | tail -1)
+	fi
+fi
+
+# Error checking
+if [ ! -d "$ANDROID_NDK_ROOT/toolchains" ]; then
+	echo "ERROR: ANDROID_NDK_ROOT is not a valid path. Please set it."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+#####################################################################
+
+if [ "$#" -lt 1 ]; then
+	THE_ARCH=armv7
+else
+	THE_ARCH=$(tr [A-Z] [a-z] <<< "$1")
+fi
+
+# https://developer.android.com/ndk/guides/abis.html
+case "$THE_ARCH" in
+  arm|armv5|armv6|armv7|armeabi)
+	TOOLCHAIN_BASE="arm-linux-androideabi"
+	TOOLNAME_BASE="arm-linux-androideabi"
+	AOSP_ABI="armeabi"
+	AOSP_ARCH="arch-arm"
+	AOSP_FLAGS="-march=armv5te -mtune=xscale -mthumb -msoft-float -funwind-tables -fexceptions -frtti"
+	;;
+  armv7a|armeabi-v7a)
+	TOOLCHAIN_BASE="arm-linux-androideabi"
+	TOOLNAME_BASE="arm-linux-androideabi"
+	AOSP_ABI="armeabi-v7a"
+	AOSP_ARCH="arch-arm"
+	AOSP_FLAGS="-march=armv7-a -mthumb -mfpu=vfpv3-d16 -mfloat-abi=softfp -Wl,--fix-cortex-a8 -funwind-tables -fexceptions -frtti"
+	;;
+  hard|armv7a-hard|armeabi-v7a-hard)
+	TOOLCHAIN_BASE="arm-linux-androideabi"
+	TOOLNAME_BASE="arm-linux-androideabi"
+	AOSP_ABI="armeabi-v7a"
+	AOSP_ARCH="arch-arm"
+	AOSP_FLAGS="-mhard-float -D_NDK_MATH_NO_SOFTFP=1 -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=softfp -Wl,--fix-cortex-a8 -funwind-tables -fexceptions -frtti -Wl,--no-warn-mismatch -Wl,-lm_hard"
+	;;
+  neon|armv7a-neon)
+	TOOLCHAIN_BASE="arm-linux-androideabi"
+	TOOLNAME_BASE="arm-linux-androideabi"
+	AOSP_ABI="armeabi-v7a"
+	AOSP_ARCH="arch-arm"
+	AOSP_FLAGS="-march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=softfp -Wl,--fix-cortex-a8 -funwind-tables -fexceptions -frtti"
+	;;
+  armv8|armv8a|aarch64|arm64|arm64-v8a)
+	TOOLCHAIN_BASE="aarch64-linux-android"
+	TOOLNAME_BASE="aarch64-linux-android"
+	AOSP_ABI="arm64-v8a"
+	AOSP_ARCH="arch-arm64"
+	AOSP_FLAGS="-funwind-tables -fexceptions -frtti"
+	;;
+  mips|mipsel)
+	TOOLCHAIN_BASE="mipsel-linux-android"
+	TOOLNAME_BASE="mipsel-linux-android"
+	AOSP_ABI="mips"
+	AOSP_ARCH="arch-mips"
+	AOSP_FLAGS="-funwind-tables -fexceptions -frtti"
+	;;
+  mips64|mipsel64|mips64el)
+	TOOLCHAIN_BASE="mips64el-linux-android"
+	TOOLNAME_BASE="mips64el-linux-android"
+	AOSP_ABI="mips64"
+	AOSP_ARCH="arch-mips64"
+	AOSP_FLAGS="-funwind-tables -fexceptions -frtti"
+	;;
+  x86)
+	TOOLCHAIN_BASE="x86"
+	TOOLNAME_BASE="i686-linux-android"
+	AOSP_ABI="x86"
+	AOSP_ARCH="arch-x86"
+	AOSP_FLAGS="-march=i686 -mtune=intel -mssse3 -mfpmath=sse -funwind-tables -fexceptions -frtti"
+	;;
+  x86_64|x64)
+	TOOLCHAIN_BASE="x86_64"
+	TOOLNAME_BASE="x86_64-linux-android"
+	AOSP_ABI="x86_64"
+	AOSP_ARCH="arch-x86_64"
+	AOSP_FLAGS="-march=x86-64 -msse4.2 -mpopcnt -mtune=intel -funwind-tables -fexceptions -frtti"
+	;;
+  *)
+	echo "ERROR: Unknown architecture $1"
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+	;;
+esac
+
+#####################################################################
+
+# GNUmakefile-cross expects these to be set. They are also used in the tests below.
+export IS_ANDROID=1
+export AOSP_FLAGS
+
+# TODO: for the previous GNUmakefile-cross. These can go away eventually.
+export ANDROID_FLAGS=$AOSP_FLAGS
+
+export CPP="$TOOLNAME_BASE-cpp"
+export CC="$TOOLNAME_BASE-gcc"
+export CXX="$TOOLNAME_BASE-g++"
+export LD="$TOOLNAME_BASE-ld"
+export AS="$TOOLNAME_BASE-as"
+export AR="$TOOLNAME_BASE-ar"
+export RANLIB="$TOOLNAME_BASE-ranlib"
+export STRIP="$TOOLNAME_BASE-strip"
+
+#####################################################################
+
+# Based on ANDROID_NDK_ROOT, try and pick up the path for the tools. We expect something
+# like /opt/android-ndk-r10e/toolchains/arm-linux-androideabi-4.7/prebuilt/linux-x86_64/bin
+# Once we locate the tools, we add it to the PATH.
+AOSP_TOOLCHAIN_PATH=""
+for host in "linux-x86_64" "darwin-x86_64" "linux-x86" "darwin-x86"
+do
+	if [ -d "$ANDROID_NDK_ROOT/toolchains/$TOOLCHAIN_BASE-$AOSP_TOOLCHAIN_SUFFIX/prebuilt/$host/bin" ]; then
+		AOSP_TOOLCHAIN_PATH="$ANDROID_NDK_ROOT/toolchains/$TOOLCHAIN_BASE-$AOSP_TOOLCHAIN_SUFFIX/prebuilt/$host/bin"
+		break
+	fi
+done
+
+# Error checking
+if [ -z "$AOSP_TOOLCHAIN_PATH" ] || [ ! -d "$AOSP_TOOLCHAIN_PATH" ]; then
+	echo "ERROR: AOSP_TOOLCHAIN_PATH is not valid. Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Error checking
+if [ ! -e "$AOSP_TOOLCHAIN_PATH/$CPP" ]; then
+	echo "ERROR: Failed to find Android cpp. Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Error checking
+if [ ! -e "$AOSP_TOOLCHAIN_PATH/$CC" ]; then
+	echo "ERROR: Failed to find Android gcc. Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+if [ ! -e "$AOSP_TOOLCHAIN_PATH/$CXX" ]; then
+	echo "ERROR: Failed to find Android g++. Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Error checking
+if [ ! -e "$AOSP_TOOLCHAIN_PATH/$RANLIB" ]; then
+  echo "ERROR: Failed to find Android ranlib. Please edit this script."
+  # exit 1
+fi
+
+# Error checking
+if [ ! -e "$AOSP_TOOLCHAIN_PATH/$AR" ]; then
+	echo "ERROR: Failed to find Android ar. Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Error checking
+if [ ! -e "$AOSP_TOOLCHAIN_PATH/$AS" ]; then
+  echo "ERROR: Failed to find Android as. Please edit this script."
+# exit 1
+fi
+
+# Error checking
+if [ ! -e "$AOSP_TOOLCHAIN_PATH/$LD" ]; then
+	echo "ERROR: Failed to find Android ld. Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Only modify/export PATH if AOSP_TOOLCHAIN_PATH good
+if [ -d "$AOSP_TOOLCHAIN_PATH" ]; then
+
+	# And only modify PATH if AOSP_TOOLCHAIN_PATH is not present
+	LEN=${#AOSP_TOOLCHAIN_PATH}
+	SUBSTR=${PATH:0:$LEN}
+	if [ "$SUBSTR" != "$AOSP_TOOLCHAIN_PATH" ]; then
+		export PATH="$AOSP_TOOLCHAIN_PATH":"$PATH"
+	fi
+fi
+
+#####################################################################
+
+# Error checking
+if [ ! -d "$ANDROID_NDK_ROOT/platforms/$AOSP_API" ]; then
+	echo "ERROR: AOSP_API is not valid. Does the NDK support the API? Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+elif [ ! -d "$ANDROID_NDK_ROOT/platforms/$AOSP_API/$AOSP_ARCH" ]; then
+	echo "ERROR: AOSP_ARCH is not valid. Does the NDK support the architecture? Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Android SYSROOT. It will be used on the command line with --sysroot
+#   http://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html
+export AOSP_SYSROOT="$ANDROID_NDK_ROOT/platforms/$AOSP_API/$AOSP_ARCH"
+
+# TODO: export for the previous GNUmakefile-cross. These can go away eventually.
+export ANDROID_SYSROOT=$AOSP_SYSROOT
+
+#####################################################################
+
+# Android STL. We support GNU, LLVM and STLport out of the box.
+
+if [ "$#" -lt 2 ]; then
+	THE_STL=stlport-shared
+else
+	THE_STL=$(tr [A-Z] [a-z] <<< "$2")
+fi
+
+case "$THE_STL" in
+  stlport-static)
+	AOSP_STL_INC="$ANDROID_NDK_ROOT/sources/cxx-stl/stlport/stlport/"
+	AOSP_STL_LIB="$ANDROID_NDK_ROOT/sources/cxx-stl/stlport/libs/$AOSP_ABI/libstlport_static.a"
+	;;
+  stlport|stlport-shared)
+	AOSP_STL_INC="$ANDROID_NDK_ROOT/sources/cxx-stl/stlport/stlport/"
+	AOSP_STL_LIB="$ANDROID_NDK_ROOT/sources/cxx-stl/stlport/libs/$AOSP_ABI/libstlport_shared.so"
+	;;
+  gabi++-static|gnu-static)
+	AOSP_STL_INC="$ANDROID_NDK_ROOT/sources/cxx-stl/gnu-libstdc++/$AOSP_TOOLCHAIN_SUFFIX/include"
+	AOSP_BITS_INC="$ANDROID_NDK_ROOT/sources/cxx-stl/gnu-libstdc++/$AOSP_TOOLCHAIN_SUFFIX/libs/$AOSP_ABI/include"
+	AOSP_STL_LIB="$ANDROID_NDK_ROOT/sources/cxx-stl/gnu-libstdc++/$AOSP_TOOLCHAIN_SUFFIX/libs/$AOSP_ABI/libgnustl_static.a"
+	;;
+  gnu|gabi++|gnu-shared|gabi++-shared)
+	AOSP_STL_INC="$ANDROID_NDK_ROOT/sources/cxx-stl/gnu-libstdc++/$AOSP_TOOLCHAIN_SUFFIX/include"
+	AOSP_BITS_INC="$ANDROID_NDK_ROOT/sources/cxx-stl/gnu-libstdc++/$AOSP_TOOLCHAIN_SUFFIX/libs/$AOSP_ABI/include"
+	AOSP_STL_LIB="$ANDROID_NDK_ROOT/sources/cxx-stl/gnu-libstdc++/$AOSP_TOOLCHAIN_SUFFIX/libs/$AOSP_ABI/libgnustl_shared.so"
+	;;
+  llvm-static)
+	AOSP_STL_INC="$ANDROID_NDK_ROOT/sources/cxx-stl/llvm-libc++/libcxx/include"
+	AOSP_STL_LIB="$ANDROID_NDK_ROOT/sources/cxx-stl/llvm-libc++/libs/$AOSP_ABI/libc++_static.a"
+	;;
+  llvm|llvm-shared)
+	AOSP_STL_INC="$ANDROID_NDK_ROOT/sources/cxx-stl/llvm-libc++/libcxx/include"
+	AOSP_STL_LIB="$ANDROID_NDK_ROOT/sources/cxx-stl/llvm-libc++/libs/$AOSP_ABI/libc++_shared.so"
+	;;
+  *)
+	echo "ERROR: Unknown STL library $2"
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+esac
+
+# Error checking
+if [ ! -d "$AOSP_STL_INC" ] || [ ! -e "$AOSP_STL_INC/memory" ]; then
+	echo "ERROR: AOSP_STL_INC is not valid. Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Error checking
+if [ ! -e "$AOSP_STL_LIB" ]; then
+	echo "ERROR: AOSP_STL_LIB is not valid. Please edit this script."
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+export AOSP_STL_INC
+export AOSP_STL_LIB
+
+# TODO: for the previous GNUmakefile-cross. These can go away eventually.
+export ANDROID_STL_INC=$AOSP_STL_INC
+export ANDROID_STL_LIB=$AOSP_STL_LIB
+
+if [ ! -z "$AOSP_BITS_INC" ]; then
+	export AOSP_BITS_INC
+fi
+
+#####################################################################
+
+VERBOSE=1
+if [ ! -z "$VERBOSE" ] && [ "$VERBOSE" != "0" ]; then
+  echo "ANDROID_NDK_ROOT: $ANDROID_NDK_ROOT"
+  echo "AOSP_TOOLCHAIN_PATH: $AOSP_TOOLCHAIN_PATH"
+  echo "AOSP_ABI: $AOSP_ABI"  
+  echo "AOSP_API: $AOSP_API"
+  echo "AOSP_SYSROOT: $AOSP_SYSROOT"
+  echo "AOSP_FLAGS: $AOSP_FLAGS"
+  echo "AOSP_STL_INC: $AOSP_STL_INC"
+  echo "AOSP_STL_LIB: $AOSP_STL_LIB"
+  if [ ! -z "$AOSP_BITS_INC" ]; then
+    echo "AOSP_BITS_INC: $AOSP_BITS_INC"
+  fi
+fi
diff --git a/setenv-embedded.sh b/setenv-embedded.sh
new file mode 100755
index 00000000..50cdab14
--- /dev/null
+++ b/setenv-embedded.sh
@@ -0,0 +1,130 @@
+#!/usr/bin/env bash
+
+# ====================================================================
+# Sets the cross compile environment for ARM Embedded
+#
+# Written by Jeffrey Walton, noloader gmail account
+#
+# Crypto++ Library is copyrighted as a compilation and (as of version 5.6.2)
+# licensed under the Boost Software License 1.0, while the individual files
+# in the compilation are all public domain.
+#
+# This script only supports Ubuntu at the moment. It does not support Fedora.
+# See http://www.cryptopp.com/wiki/ARM_Embedded_(Command_Line) for details.
+# ====================================================================
+
+# Unset old options
+
+unset IS_CROSS_COMPILE
+
+unset IS_IOS
+unset IS_ANDROID
+unset IS_ARM_EMBEDDED
+
+if [ -z "$ARM_EMBEDDED_TOOLCHAIN" ]; then
+	ARM_EMBEDDED_TOOLCHAIN="/usr/bin"
+fi
+
+if [ ! -d "$ARM_EMBEDDED_TOOLCHAIN" ]; then
+	echo "ARM_EMBEDDED_TOOLCHAIN is not valid"
+	[ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Fedora
+# TOOL_PREFIX="arm-linux-gnu"
+
+# Ubuntu
+TOOL_PREFIX="arm-linux-gnueabi"
+
+export CPP="$ARM_EMBEDDED_TOOLCHAIN/$TOOL_PREFIX-cpp"
+export CC="$ARM_EMBEDDED_TOOLCHAIN/$TOOL_PREFIX-gcc"
+export CXX="$ARM_EMBEDDED_TOOLCHAIN/$TOOL_PREFIX-g++"
+export LD="$ARM_EMBEDDED_TOOLCHAIN/$TOOL_PREFIX-ld"
+export AR="$ARM_EMBEDDED_TOOLCHAIN/$TOOL_PREFIX-ar"
+export AS="$ARM_EMBEDDED_TOOLCHAIN/$TOOL_PREFIX-as"
+export RANLIB="$ARM_EMBEDDED_TOOLCHAIN/$TOOL_PREFIX-gcc-ranlib-4.7"
+
+# Test a few of the tools
+if [ ! -e "$CPP" ]; then
+  echo "ERROR: CPP is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+if [ ! -e "$CC" ]; then
+  echo "ERROR: CC is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+if [ ! -e "$CXX" ]; then
+  echo "ERROR: CXX is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+if [ ! -e "$AR" ]; then
+  echo "ERROR: AR is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+if [ ! -e "$AS" ]; then
+  echo "ERROR: AS is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+if [ ! -e "$RANLIB" ]; then
+  echo "ERROR: RANLIB is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+if [ ! -e "$LD" ]; then
+  echo "ERROR: LD is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# The Crypto++ Makefile uses these to disable host settings like
+#   IS_LINUX or IS_DARWIN, and incorporate settings for ARM_EMBEDDED
+export IS_ARM_EMBEDDED=1
+
+# GNUmakefile-cross uses these to to set CXXFLAGS for ARM_EMBEDDED
+if [ -z "$ARM_EMBEDDED_SYSROOT" ]; then
+  export ARM_EMBEDDED_SYSROOT="/usr/arm-linux-gnueabi"
+fi
+
+if [ ! -d "$ARM_EMBEDDED_SYSROOT" ]; then
+  echo "ERROR: ARM_EMBEDDED_SYSROOT is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Fix C++ header paths for Ubuntu
+ARM_EMBEDDED_TOOLCHAIN_VERSION="4.7.3"
+ARM_EMBEDDED_CXX_HEADERS="$ARM_EMBEDDED_SYSROOT/include/c++/$ARM_EMBEDDED_TOOLCHAIN_VERSION"
+
+if [ ! -d "$ARM_EMBEDDED_CXX_HEADERS" ]; then
+  echo "ERROR: ARM_EMBEDDED_CXX_HEADERS is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+if [ ! -d "$ARM_EMBEDDED_CXX_HEADERS/arm-linux-gnueabi" ]; then
+  echo "ERROR: ARM_EMBEDDED_CXX_HEADERS is not valid"
+  [ "$0" = "$BASH_SOURCE" ] && exit 1 || return 1
+fi
+
+# Finally, the flags...
+# export ARM_EMBEDDED_FLAGS="-march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 -Wl,--fix-cortex-a8 -I$ARM_EMBEDDED_CXX_HEADERS -I$ARM_EMBEDDED_CXX_HEADERS/arm-linux-gnueabi"
+
+if [ -z "$ARM_EMBEDDED_FLAGS" ]; then
+  export ARM_EMBEDDED_FLAGS="-mcpu=cortex-m3 -I$ARM_EMBEDDED_CXX_HEADERS -I$ARM_EMBEDDED_CXX_HEADERS/arm-linux-gnueabi"
+fi
+
+# And print stuff to wow the user...
+VERBOSE=1
+if [ ! -z "$VERBOSE" ] && [ "$VERBOSE" -ne 0 ]; then
+  echo "CPP: $CPP"
+  echo "CXX: $CXX"
+  echo "AR: $AR"
+  echo "LD: $LD"
+  echo "RANLIB: $RANLIB"
+  echo "ARM_EMBEDDED_TOOLCHAIN: $ARM_EMBEDDED_TOOLCHAIN"
+  echo "ARM_EMBEDDED_CXX_HEADERS: $ARM_EMBEDDED_CXX_HEADERS"
+  echo "ARM_EMBEDDED_FLAGS: $ARM_EMBEDDED_FLAGS"
+  echo "ARM_EMBEDDED_SYSROOT: $ARM_EMBEDDED_SYSROOT"
+fi