How do you compile OpenSSL for x64?

Question

After following the instructions in INSTALL.W64 I have two problems:

• The code is still written to the \"out32\" folder. I need to be able to link to both 32-bi

Answer 1

If you're building in cygwin, you can use the following script, assume MSDEVPATH has already been set to your Visual Studio dir

 echo "Building x64 OpenSSL"
 # save the path of the x86 msdev
 MSDEVPATH_x86=$MSDEVPATH
 # and set a new var with x64 one
 MSDEVPATH_x64=`cygpath -u $MSDEVPATH/bin/x86_amd64`

 # now set vars with the several lib path for x64 in windows mode
 LIBPATH_AMD64=`cygpath -w $MSDEVPATH_x86/lib/amd64`
 LIBPATH_PLATFORM_x64=`cygpath -w $MSDEVPATH_x86/PlatformSDK/lib/x64`
 # and set the LIB env var that link looks at
 export LIB="$LIBPATH_AMD64;$LIBPATH_PLATFORM_x64"

 # the new path for nmake to look for cl, x64 at the start to override any other msdev that was set previously
 export PATH=$MSDEVPATH_x64:$PATH

 ./Configure VC-WIN64A zlib-dynamic --prefix=$OUT --with-zlib-include=zlib-$ZLIB_VERSION/include --with-zlib-lib=zlib-$ZLIB_VERSION/x64_lib

 # do the deed
 ms/do_win64a.bat
 $MSDEVPATH_x86/bin/nmake -f ms/ntdll.mak  ${1:-install}