[infra] moved env variables into Dockerfiles

expat/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash -ex
+#!/bin/bash -eu
 . /env
 
 cd /src/expat/expat

infra/base-images/base-clang/Dockerfile

@@ -38,21 +38,26 @@ WORKDIR /work/llvm
 RUN cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DLIBCXX_ENABLE_SHARED=OFF  -DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON /src/llvm
 RUN ninja
 RUN ninja install
-RUN rm -rf /work/llvm
 
+# Copy libfuzzer sources
 RUN mkdir /src/libfuzzer
 RUN cp -r /src/llvm/lib/Fuzzer/* /src/libfuzzer/
+
+# Cleanup
+RUN rm -rf /work/llvm
 RUN rm -rf /src/llvm
-
-# RUN ln -s /work/llvm/bin/lld /work/llvm/bin/ld
-
 RUN apt-get remove --purge -y $LLVM_DEP_PACKAGES
 RUN apt-get autoremove -y
 
+# Setup the environment.
 ENV CC "clang"
 ENV CXX "clang++"
 ENV CCC "clang++"
 
 ENV CFLAGS "-g"
+ENV CXXFLAGS_EXTRA "-stdlib=libc++"
+ENV CXXFLAGS "$CFLAGS $CXXFLAGS_EXTRA"
+
+ENV LDFLAGS "-Wl,-Bstatic -lc++ -lc++abi -Wl,-Bdynamic"
 
 COPY env /

infra/base-images/base-clang/env

@@ -27,10 +27,8 @@ $CXX -g -std=c++11 -stdlib=libc++ $sanitizer_flags -c /src/libfuzzer/*.cpp -I/sr
 echo "Done."
 popd > /dev/null
 
-export CFLAGS="-g $sanitizer_flags $cov_flags"
-export LDFLAGS="-Wl,-Bstatic -lc++ -lc++abi -Wl,-Bdynamic"
 export LIBCXX_FLAGS="-stdlib=libc++"
-export CXXFLAGS="$CFLAGS $LIBCXX_FLAGS "
+export CXXFLAGS="$CFLAGS $LIBCXX_FLAGS"
 
 echo "CC=$CC"
 echo "CXX=$CXX"

infra/base-images/base-libfuzzer/Dockerfile

@@ -28,5 +28,8 @@ ENV cov_flags="-fsanitize-coverage=edge,indirect-calls,8bit-counters"
 
 ENV ASAN_OPTIONS="symbolize=1"
 
+ENV CFLAGS "$CFLAGS $sanitizer_flags $cov_flags"
+ENV CXXFLAGS "$CFLAGS $CXXFLAGS_EXTRA"
+
 RUN mkdir /out
 VOLUME /out