tcwg_kernel-build.sh: Fill build_linux and count_linux_objs

Change-Id: I9cddd58582afd36e9dd6c10273c2d175dd9c076a

1 files changed, 83 insertions, 0 deletions

diff --git a/tcwg_kernel-build.sh b/tcwg_kernel-build.sh
index abfac6b3..fe217607 100755
--- a/tcwg_kernel-build.sh
+++ b/tcwg_kernel-build.sh
@@ -380,12 +380,95 @@ build_llvm ()
     )
 }
 
+# Build Linux kernel
 build_linux ()
 {
+    (
+    set -euf -o pipefail
+
+    clone_repo linux
+
+    rm -rf $(pwd)/bin
+    mkdir $(pwd)/bin
+
+    case "$toolchain" in
+	llvm)
+	    bin="$(pwd)/llvm-install/bin"
+	    cc="$bin/clang"
+	    ;;
+	gnu)
+	    bin="$(pwd)/abe/builds/destdir/x86_64-unknown-linux-gnu/bin"
+	    cc="$bin/$(print_gnu_target $target)-gcc"
+	    ;;
+    esac
+
+    # Use binutils, etc from $bin
+    export PATH="$bin:$PATH"
+
+    # Use ccache only when bisecting linux.  Otherwise the compiler is
+    # new in every build and we would only clobber ccache volume.
+    local ccache=""
+    if [ x"$mode" = x"bisect" -a x"$current_project" = x"linux" ]; then
+	ccache="ccache"
+    fi
+    cat > $(pwd)/bin/$target-cc <<EOF
+#!/bin/sh
+exec $ccache $cc "\$@"
+EOF
+    chmod +x $(pwd)/bin/$target-cc
+
+    # Define make variables.
+    opts="CC=$(pwd)/bin/$target-cc"
+    if [ x"$target" != x"native" ]; then
+	opts="$opts ARCH=$(print_kernel_target $target)"
+	opts="$opts CROSS_COMPILE=$(print_gnu_target $target)-"
+	opts="$opts HOSTCC=gcc"
+    fi
+
+    cd ${git_dirs[linux]}
+
+    make $opts distclean
+
+    make $opts $linux_config
+
+    ccache -z
+    make $opts -j$(nproc --all) -s -k &
+    res=0 && wait $! || res=$?
+    ccache -s
+    return $res
+    )
 }
 
+# Count number successfully built .o files in linux (and build linux)
 count_linux_objs ()
 {
+    (
+    set -euf -o pipefail
+
+    # Run only if compiler was successfully built in the previous step.
+    if [ -f $run_step_prev_artifacts/build-ok ]; then
+	build_linux &
+	res=0; wait $! || res=$?
+
+	# Number of .o files created is the main success metric.
+	echo "linux_n_obj:" >> $top_artifacts/results
+	if [ $res != 0 ]; then
+	    local linux_n_obj
+	    linux_n_obj=$(find ${git_dirs[linux]} -name "*.o" | wc -l)
+	    echo "$linux_n_obj" >> $top_artifacts/results
+	else
+	    echo "all" >> $top_artifacts/results
+	fi
+
+	if $tidy; then
+	    git_clean linux
+	fi
+    fi
+
+    if $tidy; then
+	rm -rf abe/builds llvm-install
+    fi
+    )
 }
 
 no_regression_p ()