Add Travis CI jobs for Arm and AArch64 (#638)

* Add Travis CI jobs for Arm and AArch64

- Use fixed Linaro toolchains
- Move travis script to a shell file

Signed-off-by: Kevin Petit <kevin.petit@arm.com>

* Fix Arm build and string comparisons added under #637

* Remove verbose flag on tar command

travis.sh

@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+
+set -e
+
+export TOP=$(pwd)
+
+TOOLCHAIN_URL_arm="https://releases.linaro.org/components/toolchain/binaries/7.5-2019.12/arm-linux-gnueabihf/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf.tar.xz"
+TOOLCHAIN_URL_aarch64="https://releases.linaro.org/components/toolchain/binaries/7.5-2019.12/aarch64-linux-gnu/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar.xz"
+
+TOOLCHAIN_PREFIX_arm=arm-linux-gnueabihf
+TOOLCHAIN_PREFIX_aarch64=aarch64-linux-gnu
+
+TOOLCHAIN_FILE=${TOP}/toolchain.cmake
+touch ${TOOLCHAIN_FILE}
+
+# Prepare toolchain if needed
+if [[ ${JOB_ARCHITECTURE} != "" ]]; then
+    TOOLCHAIN_URL_VAR=TOOLCHAIN_URL_${JOB_ARCHITECTURE}
+    TOOLCHAIN_URL=${!TOOLCHAIN_URL_VAR}
+    wget ${TOOLCHAIN_URL}
+    TOOLCHAIN_ARCHIVE=${TOOLCHAIN_URL##*/}
+    tar xf ${TOOLCHAIN_ARCHIVE}
+    TOOLCHAIN_DIR=${TOP}/${TOOLCHAIN_ARCHIVE%.tar.xz}
+    export PATH=${TOOLCHAIN_DIR}/bin:${PATH}
+
+    TOOLCHAIN_PREFIX_VAR=TOOLCHAIN_PREFIX_${JOB_ARCHITECTURE}
+    TOOLCHAIN_PREFIX=${!TOOLCHAIN_PREFIX_VAR}
+
+    echo "SET(CMAKE_SYSTEM_NAME Linux)" >> ${TOOLCHAIN_FILE}
+    echo "SET(CMAKE_SYSTEM_PROCESSOR ${JOB_ARCHITECTURE})" >> ${TOOLCHAIN_FILE}
+    echo "SET(CMAKE_C_COMPILER   ${TOOLCHAIN_PREFIX}-gcc)" >> ${TOOLCHAIN_FILE}
+    echo "SET(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}-g++)" >> ${TOOLCHAIN_FILE}
+    echo "SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)" >> ${TOOLCHAIN_FILE}
+    echo "SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)" >> ${TOOLCHAIN_FILE}
+    echo "SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)" >> ${TOOLCHAIN_FILE}
+fi
+
+# Prepare headers
+git clone https://github.com/KhronosGroup/OpenCL-Headers.git
+cd OpenCL-Headers
+ln -s CL OpenCL # For OSX builds
+cd ..
+
+# Get and build loader
+git clone https://github.com/KhronosGroup/OpenCL-ICD-Loader.git
+cd ${TOP}/OpenCL-ICD-Loader
+mkdir build
+cd build
+cmake -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE} -DOPENCL_ICD_LOADER_HEADERS_DIR=${TOP}/OpenCL-Headers/ ..
+make
+
+# Get libclcxx
+cd ${TOP}
+git clone https://github.com/KhronosGroup/libclcxx.git
+
+# Build CTS
+ls -l
+mkdir build
+cd build
+cmake -DCL_INCLUDE_DIR=${TOP}/OpenCL-Headers \
+      -DCL_LIB_DIR=${TOP}/OpenCL-ICD-Loader/build \
+      -DCL_LIBCLCXX_DIR=${TOP}/libclcxx \
+      -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE} \
+      -DCMAKE_RUNTIME_OUTPUT_DIRECTORY=./bin \
+      -DOPENCL_LIBRARIES="-lOpenCL -lpthread" \
+      ..
+make -j2
+