Build libiwasm using gcc-i386-elf

wasm-base.dockerfile

@@ -21,7 +21,7 @@ RUN apt-get update \
 ARG GCCVERSION=5.4.0
 ARG BINUTILSVERSION=2.26.1
 ARG CROSSPREFIX=/opt/crosscompiler
-ARG CROSSTARGET=i686-elf
+ARG CROSSTARGET=i386-elf
 
 # Build Binutils for cross-compilation
 WORKDIR /
@@ -162,12 +162,22 @@ RUN git clone https://gitea.vps.chriphost.de/christoph/wamr wamrlib \
 #  && make -j$(nproc)
 
 # Build WAMR libiwasm (vmcore interpreter runtime - to run wasm modules embedded in a native application)
+# TODO: Should probably put the cross-compilation definitions in a toolchain file
+COPY --from=compiler-builder /opt/crosscompiler /opt/crosscompiler
 WORKDIR /wamrlib
 RUN mkdir build_libiwasm && cd build_libiwasm \
  && cmake \
+    -DCMAKE_SYSTEM_NAME=Generic \
+    -DCMAKE_SYSTEM_PROCESSOR=i386 \
+    -DCMAKE_C_COMPILER=/opt/crosscompiler/bin/i386-elf-gcc \
+    -DCMAKE_CXX_COMPILER=/opt/crosscompiler/bin/i386-elf-g++ \
+    -DCMAKE_ASM_COMPILER=/opt/crosscompiler/bin/i386-elf-gcc \
+    -DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY \
+    -DCMAKE_BUILD_TYPE=Debug \
+    -DCMAKE_VERBOSE_MAKEFILE=ON \
     -DWAMR_BUILD_PLATFORM=baremetal \
     -DWAMR_BUILD_TARGET=X86_32 \
-    -DWAMR_BUILD_AOT=0 \
+    -DWAMR_BUILD_AOT=1 \
     -DWAMR_BUILD_WAMR_COMPILER=0 \
     -DWAMR_BUILD_INTERP=1 \
     -DWAMR_BUILD_FAST_INTERP=0 \
@@ -234,7 +244,12 @@ RUN ln -sf /opt/wamr/product-mini/platforms/linux/build_iwasm /opt/wamr-iwasm \
  && ln -sf /opt/wamr/build_libiwasm /opt/wamr-libiwasm \
  && ln -sf /opt/wamr/build_libiwasm_linux /opt/wamr-libiwasm-linux
 
-COPY ./examples /home/ubuntu/examples
-WORKDIR /home/ubuntu/examples
+RUN useradd fail \
+ && mkdir /home/fail && chown fail /home/fail \
+ && echo 'fail:fail' | chpasswd && chsh fail --shell /usr/bin/fish \
+ && adduser fail sudo
+
+COPY ./examples /home/fail/examples
+WORKDIR /home/fail/examples
 
 ENV PATH="$PATH:/opt/wasi-sdk/bin:/opt/wamr-iwasm:/opt/wamr-wamrc"