Patch APR in docker image thats is used to cross-compile to remove li… (

#891)

…bcrypt dependency.

Motivation:

We don't need to depend on libcrypt when cross-compiling. We already
don't depend on it when we don't cross-compile

Modifications:

Patch APR as part of the docker image creation and so remove libcrypt
dependency

Result:

Fixes #888

docker/Dockerfile.cross_compile_aarch64

@@ -36,11 +36,16 @@ RUN set -x && \
   mv gcc-arm-$GCC_VERSION-x86_64-aarch64-none-linux-gnu /
 ENV PATH="/gcc-arm-$GCC_VERSION-x86_64-aarch64-none-linux-gnu/bin:${PATH}"
 
+# Copy over patch we need to apply to apr to not link against libcrypt
+COPY patches/apr_crypt.patch $SOURCE_DIR
+
 # Cross compile Apache Apr for aarch64 - static
 RUN set -x && \
   wget --no-check-certificate https://downloads.apache.org//apr/apr-$APR_VERSION.tar.gz && \
   tar xvf apr-$APR_VERSION.tar.gz && \
   pushd apr-$APR_VERSION && \
+  patch -p0 < $SOURCE_DIR/apr_crypt.patch && \
+  ./buildconf && \
   CC=aarch64-none-linux-gnu-gcc CFLAGS='-O3 -fno-omit-frame-pointer -fPIC ' ./configure --disable-shared --prefix=/opt/apr-$APR_VERSION-static --host=aarch64-none-linux-gnu ac_cv_have_decl_sys_siglist=no ac_cv_file__dev_zero=yes ac_cv_func_setpgrp_void=yes apr_cv_tcp_nodelay_with_cork=yes ac_cv_sizeof_struct_iovec=8 && \
   make || true && \
   pushd tools && \