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#!/usr/bin/env bash
set -e
BEST_CLANG_CANDIDATE=""
die() {
>&2 echo "die: $*"
exit 1
}
pick_clang() {
local BEST_VERSION=0
for CLANG_CANDIDATE in clang clang-13 clang-14 /usr/local/bin/clang-13 /usr/local/bin/clang-14; do
if ! command -v $CLANG_CANDIDATE >/dev/null 2>&1; then
continue
fi
if $CLANG_CANDIDATE --version 2>&1 | grep "Apple clang" >/dev/null; then
continue
fi
if ! $CLANG_CANDIDATE -dumpversion >/dev/null 2>&1; then
continue
fi
local VERSION=""
VERSION="$($CLANG_CANDIDATE -dumpversion)"
local MAJOR_VERSION="${VERSION%%.*}"
if [ "$MAJOR_VERSION" -gt "$BEST_VERSION" ]; then
BEST_VERSION=$MAJOR_VERSION
BEST_CLANG_CANDIDATE="$CLANG_CANDIDATE"
fi
done
if [ "$BEST_VERSION" -lt 13 ]; then
die "Please make sure that Clang version 13 or higher is installed."
fi
}
# Save flags for oss-fuzz to avoid fuzzing Tools/
# https://google.github.io/oss-fuzz/getting-started/new-project-guide/#temporarily-disabling-code-instrumentation-during-builds
CFLAGS_SAVE="$CFLAGS"
CXXFLAGS_SAVE="$CXXFLAGS"
unset CFLAGS
unset CXXFLAGS
export AFL_NOOPT=1
# FIXME: Replace these CMake invocations with a CMake superbuild?
echo "Building Lagom Tools..."
cmake -GNinja -B Build/tools \
-DBUILD_LAGOM=OFF \
-DCMAKE_INSTALL_PREFIX=Build/tool-install \
-Dpackage=LagomTools
ninja -C Build/tools install
# Restore flags for oss-fuzz
export CFLAGS="${CFLAGS_SAVE}"
export CXXFLAGS="${CXXFLAGS_SAVE}"
unset AFL_NOOPT
echo "Building Lagom Fuzzers..."
if [ "$#" -gt "0" ] && [ "--oss-fuzz" = "$1" ] ; then
echo "Building for oss-fuzz configuration..."
cmake -GNinja -B Build/fuzzers \
-DBUILD_LAGOM=ON \
-DBUILD_SHARED_LIBS=OFF \
-DENABLE_FUZZERS_OSSFUZZ=ON \
-DCMAKE_C_COMPILER="$CC" \
-DCMAKE_CXX_COMPILER="$CXX" \
-DCMAKE_CXX_FLAGS="$CXXFLAGS -DOSS_FUZZ=ON" \
-DLINKER_FLAGS="$LIB_FUZZING_ENGINE" \
-DCMAKE_PREFIX_PATH=Build/tool-install
ninja -C Build/fuzzers
cp Build/fuzzers/Fuzzers/Fuzz* "$OUT"/
else
echo "Building for local fuzz configuration..."
pick_clang
cmake -GNinja -B Build/lagom-fuzzers \
-DBUILD_LAGOM=ON \
-DENABLE_FUZZERS_LIBFUZZER=ON \
-DENABLE_ADDRESS_SANITIZER=ON \
-DENABLE_UNDEFINED_SANITIZER=ON \
-DCMAKE_PREFIX_PATH=Build/tool-install \
-DCMAKE_C_COMPILER=$BEST_CLANG_CANDIDATE \
-DCMAKE_CXX_COMPILER="${BEST_CLANG_CANDIDATE/clang/clang++}"
ninja -C Build/lagom-fuzzers
fi
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