run.sh

#!/bin/sh
#
# Run clang static analyzer on magenta.
#
# Usage:
#   run.sh
#
# To build a single target, set the TARGET variable:
#   TARGET=build-magenta-pc-x86-64/dev/hw_rng/hw_rng.mod.o ./run.sh

set -e

# Location of toolchain
TC=~/doc/build

export PATH="$TC/bin:$PATH"
export PATH="$TC/libexec:$PATH"
export PATH="~/doc/llvm/tools/clang/tools/xtu-build:$PATH"

export OUT_FILE="xtu-out/$(date -Iseconds).log"

BINUTILS=~/doc/fuchsia/magenta/prebuilt/downloads/x86_64-elf-6.2.0-Linux-x86_64/bin
for tool in objcopy nm ld ld.gold strip readelf; do
  cp "$BINUTILS/x86_64-elf-$tool" "$TC/bin/$tool"
done

# strace_interceptor.py and other xtu-* tools need this
export CLANG_PATH="$TC/bin"

# ccc-analyzer needs this
export CCC_CC="$TC/bin/clang"

export XTU_SCRIPT_DIR=~/doc/llvm/tools/clang/tools/xtu-build-new

export CLANGIFIED_COMPILE_DATABASE=clang_compile_commands.json

# Sanity checks
for tool in clang ld ccc-analyzer; do
  LOC=`which "$tool"`
  if [ "$?" != "0" ]; then
    (>&2 echo "Unable to find path to $tool");
    exit 1
  fi
  (>&2 echo "Using $tool from $LOC")
done

mkdir -p xtu-out

echo  >$OUT_FILE

export TARGET="${TARGET:-magenta-px-x86-64}"
echo "Building target $TARGET"

# Initially, run the build process as usual, but wrapped up in bear to
# generate a compile_commands.json file.
bear make \
  USE_CLANG=true \
  TOOLCHAIN_PREFIX=$TC/bin/ \
  ARCH_x86_64_TOOLCHAIN_PREFIX=$TC/bin/ \
  LIBGCC=$TC/lib/clang/4.0.0/lib/linux/libclang_rt.builtins-x86_64.a \
  V=1 \
  -j 48 $TARGET 2>&1 | tee --append $OUT_FILE

# Bear is seeing compiler invocations as invocations to "cc" rather than
# "clang" for some reason. This is bad, since if we re-play those
# invocations we'll end up being redirected to GCC. Replace occurrences
# of "cc" with the path to clang in compile_commands.json
./clangify.py --clang-path "$TC/bin/clang" > $CLANGIFIED_COMPILE_DATABASE

(>&2 echo Running xtu-build with compilation database)
(echo Running xtu-build with compilation database >> $OUT_FILE)
"$XTU_SCRIPT_DIR/xtu-build.py" \
  --clang-path "$TC/bin" -v -b $CLANGIFIED_COMPILE_DATABASE \
  2>&1 | tee --append $OUT_FILE

(>&2 echo Running xtu-analyze.py)
(echo Running xtu-analyze.py >> $OUT_FILE)

rm -rf .xtu-out
CCC_CC="$TC/bin/clang" "$XTU_SCRIPT_DIR/xtu-analyze.py" \
  -b $CLANGIFIED_COMPILE_DATABASE --clang-path="$TC" \
  --ccc-analyzer-path ~/doc/build/libexec --output-format html \
  2>&1 | tee --append $OUT_FILE