Merge pull request luigirizzo#334 from desbma/travis-ci

Add Travis CI integration

.travis.yml

@@ -0,0 +1,32 @@
+dist: trusty
+sudo: false
+language: c
+cache:
+  directories:
+    - $HOME/Linux
+    - $HOME/Drivers
+env:
+  - KERNEL_VERSION=3.2   ARCH=i386
+  - KERNEL_VERSION=3.4   ARCH=i386
+  - KERNEL_VERSION=3.10  ARCH=i386
+  - KERNEL_VERSION=3.16  ARCH=i386
+  - KERNEL_VERSION=4.1   ARCH=i386
+  - KERNEL_VERSION=4.4   ARCH=i386
+  - KERNEL_VERSION=4.9   ARCH=i386
+  - KERNEL_VERSION=linus ARCH=i386
+  - KERNEL_VERSION=3.2   ARCH=x86_64
+  - KERNEL_VERSION=3.4   ARCH=x86_64
+  - KERNEL_VERSION=3.10  ARCH=x86_64
+  - KERNEL_VERSION=3.16  ARCH=x86_64
+  - KERNEL_VERSION=4.1   ARCH=x86_64
+  - KERNEL_VERSION=4.4   ARCH=x86_64
+  - KERNEL_VERSION=4.9   ARCH=x86_64
+  - KERNEL_VERSION=linus ARCH=x86_64
+matrix:
+  allow_failures:
+    - env: KERNEL_VERSION=linus ARCH=i386
+    - env: KERNEL_VERSION=linus ARCH=x86_64
+install:
+  - "rm -Rf LINUX/ext-drivers && mkdir -p $HOME/Drivers && ln -sv $HOME/Drivers LINUX/ext-drivers"
+script:
+  - "./ci/build-linux $KERNEL_VERSION $ARCH"

ci/build-linux

@@ -0,0 +1,53 @@
+#!/bin/bash -eu
+
+set -o pipefail
+
+readonly KERNEL_VERSION=${1:?}
+readonly ARCH=${2:?}
+readonly GCC_MAJOR_VERSION=$(echo '#include <stdio.h>
+void main() { printf("%u\n", __GNUC__); }' | gcc -x c - -o /tmp/getgccversion  && /tmp/getgccversion)
+readonly PROC_COUNT=$(grep -c '^processor' /proc/cpuinfo)
+
+
+if [ ! -d ~/Linux/$KERNEL_VERSION ]
+then
+  # clone
+  if [ "$KERNEL_VERSION" = "linus" ]
+  then
+    git clone 'https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git' ~/Linux/$KERNEL_VERSION
+  else
+    git clone 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git' ~/Linux/$KERNEL_VERSION
+    pushd ~/Linux/$KERNEL_VERSION
+    git checkout linux-${KERNEL_VERSION}.y
+    popd
+  fi
+else
+  # update
+  pushd ~/Linux/$KERNEL_VERSION
+  git pull
+  popd
+fi
+
+# configure kernel
+pushd ~/Linux/$KERNEL_VERSION
+compiler_file=compiler-gcc${GCC_MAJOR_VERSION}.h
+if [ ! -f include/linux/${compiler_file} -a ! -h include/linux/${compiler_file} ]
+then
+  # fix compilation of old kernels with recent GCC
+  pushd include/linux
+  if [ -f compiler-gcc5.h -a $GCC_MAJOR_VERSION -gt 5 ]
+  then
+    ln -sv compiler-gcc5.h ${compiler_file}
+  else
+    ln -sv compiler-gcc4.h ${compiler_file}
+  fi
+  popd
+fi
+make mrproper
+make -j $PROC_COUNT ARCH=${ARCH} defconfig
+make -j $PROC_COUNT ARCH=${ARCH} modules_prepare
+popd
+
+# build
+./configure --kernel-dir=$HOME/Linux/$KERNEL_VERSION
+make -j $PROC_COUNT