Cross compiling tarsnap for mingw32msvc

Cross compiling tarsnap for mingw32msvc

export PATH=$PATH:/usr/local/cross-tools/bin
cd tarsnap-autoconf-1.0.29
./configure --host=i386-mingw32msvc 

Failed because it wouldn't find zlib.

wget http://zlib.net/zlib-1.2.5.tar.gz
tar xvfz zlib-1.2.5.tar.gz
cd zlib-1.2.5
env CROSS_PREFIX=i386-mingw32msvc- ./configure --static

So now trying tarsnap again:

cd ..
env LDFLAGS="-Lzlib-1.2.5" CPPFLAGS="-Izlib-1.2.5" ./configure --host=i386-mingw32msvc

Now it fails on OpenSSL, and I'm giving up.

checking for zlib.h... yes
checking for inflate in -lz... yes
checking openssl/rsa.h usability... no
checking openssl/rsa.h presence... no
checking for openssl/rsa.h... no
configure: error: *** OpenSSL header files missing ***

If this included OpenSSL, then perhaps I could cross-compile it.