I think I was doing cmake wrong

Author: absurdfarce

CMakeLists.txt

@@ -5,10 +5,6 @@ set(CASS_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 set(CASS_SRC_DIR "${CASS_ROOT_DIR}/src")
 set(CASS_INCLUDE_DIR "${CASS_ROOT_DIR}/include")
 
-# Allow user to specify the location of applink.c.  Some Windows builds require this as an
-# interface into OpenSSL BIO ops.  See https://docs.openssl.org/1.1.1/man3/OPENSSL_Applink/#synopsis
-set(CASS_OPENSSL_APPLINK "")
-
 # Ensure functions/modules are available
 list(APPEND CMAKE_MODULE_PATH ${CASS_ROOT_DIR}/cmake)
 

src/CMakeLists.txt

@@ -13,6 +13,8 @@ endif()
 
 if(CASS_USE_OPENSSL)
   list(APPEND SOURCES ssl/ssl_openssl_impl.cpp ssl/ring_buffer_bio.cpp)
+  # Allow user to specify the location of applink.c.  Some Windows builds require this as an
+  # interface into OpenSSL BIO ops.  See https://docs.openssl.org/1.1.1/man3/OPENSSL_Applink/#synopsis
   if(WIN32 AND (NOT CASS_OPENSSL_APPLINK STREQUAL ""))
     list(APPEND SOURCES ${CASS_OPENSSL_APPLINK})
   endif()