cmake: compile definition to enforce botan stream

Author: Hannes Rantzsch

Release/CMakeLists.txt

@@ -62,6 +62,7 @@ endif()
 include(cmake/cpprest_find_boost.cmake)
 include(cmake/cpprest_find_zlib.cmake)
 include(cmake/cpprest_find_openssl.cmake)
+include(cmake/cpprest_find_botan.cmake)
 include(cmake/cpprest_find_websocketpp.cmake)
 include(cmake/cpprest_find_brotli.cmake)
 include(CheckIncludeFiles)

Release/cmake/cpprest_find_botan.cmake

@@ -0,0 +1,13 @@
+function(cpprest_find_botan)
+  if(TARGET cpprestsdk_botan_internal)
+    return()
+  endif()
+
+  # TODO: this does not make sure Botan is set and does not fail at configure time
+  set(CMAKE_REQUIRED_INCLUDES "${BOTAN_INCLUDE_DIR}")
+  set(CMAKE_REQUIRED_LIBRARIES "${BOTAN_LIBRARY}")
+
+  add_library(cpprestsdk_botan_internal INTERFACE)
+  target_link_libraries(cpprestsdk_botan_internal INTERFACE "$<BUILD_INTERFACE:${BOTAN_LIBRARY}>")
+  target_include_directories(cpprestsdk_botan_internal INTERFACE "$<BUILD_INTERFACE:${BOTAN_INCLUDE_DIR}>")
+endfunction()

Release/src/CMakeLists.txt

@@ -128,9 +128,10 @@ endif()
 if(CPPREST_HTTP_CLIENT_IMPL STREQUAL "asio")
   cpprest_find_boost()
   cpprest_find_openssl()
-  target_compile_definitions(cpprest PUBLIC -DCPPREST_FORCE_HTTP_CLIENT_ASIO)
+  cpprest_find_botan()
+  target_compile_definitions(cpprest PUBLIC -DCPPREST_BOTAN_SSL -DCPPREST_FORCE_HTTP_CLIENT_ASIO)
   target_sources(cpprest PRIVATE http/client/http_client_asio.cpp http/client/x509_cert_utilities.cpp)
-  target_link_libraries(cpprest PUBLIC cpprestsdk_boost_internal cpprestsdk_openssl_internal)
+  target_link_libraries(cpprest PUBLIC cpprestsdk_boost_internal cpprestsdk_openssl_internal cpprestsdk_botan_internal)
 elseif(CPPREST_HTTP_CLIENT_IMPL STREQUAL "winhttp")
   target_link_libraries(cpprest PRIVATE
     httpapi.lib
@@ -248,6 +249,7 @@ if(CPPREST_INSTALL)
   set(CPPREST_USES_ZLIB OFF)
   set(CPPREST_USES_BROTLI OFF)
   set(CPPREST_USES_OPENSSL OFF)
+  set(CPPREST_USES_BOTAN OFF)
 
   set(CPPREST_TARGETS cpprest)
   if(TARGET cpprestsdk_boost_internal)
@@ -266,6 +268,10 @@ if(CPPREST_INSTALL)
     list(APPEND CPPREST_TARGETS cpprestsdk_openssl_internal)
     set(CPPREST_USES_OPENSSL ON)
   endif()
+  if(TARGET cpprestsdk_botan_internal)
+    list(APPEND CPPREST_TARGETS cpprestsdk_botan_internal)
+    set(CPPREST_USES_BOTAN ON)
+  endif()
   if(TARGET cpprestsdk_websocketpp_internal)
     list(APPEND CPPREST_TARGETS cpprestsdk_websocketpp_internal)
   endif()