1 files changed, 36 insertions, 0 deletions
diff --git a/projects/cpython3/build.sh b/projects/cpython3/build.sh
new file mode 100644
index 00000000..8d22f02a
--- /dev/null
+++ b/projects/cpython3/build.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Ignore memory leaks from python scripts invoked in the build
+export ASAN_OPTIONS="detect_leaks=0"
+
+# Remove -pthread from CFLAGS, this trips up ./configure
+# which thinks pthreads are available without any CLI flags
+CFLAGS=${CFLAGS//"-pthread"/}
+
+FLAGS=""
+case $SANITIZER in
+  address)
+    FLAGS="--with-address-sanitizer"
+    ;;
+  memory)
+    FLAGS="--with-memory-sanitizer"
+    ;;
+  undefined)
+    FLAGS="--with-undefined-behavior-sanitizer"
+    ;;
+esac
+./configure $FLAGS --prefix $OUT
+
+make -j$(nproc) install
+
+FUZZ_DIR=Modules/_xxtestfuzz
+for fuzz_test in $(cat $FUZZ_DIR/fuzz_tests.txt)
+do
+  # Build (but don't link) the fuzzing stub with a C compiler
+  $CC $CFLAGS $($OUT/bin/python3-config --cflags) $FUZZ_DIR/fuzzer.c \
+    -D _Py_FUZZ_ONE -D _Py_FUZZ_$fuzz_test -c -Wno-unused-function \
+    -o $WORK/$fuzz_test.o
+  # Link with C++ compiler to appease libfuzzer
+  $CXX $CXXFLAGS $WORK/$fuzz_test.o -o $OUT/$fuzz_test \
+    $LIB_FUZZING_ENGINE $($OUT/bin/python3-config --ldflags --embed)
+done