externals: Move LibreSSL linking to httplib.

Neither core nor web_services use OpenSSL nor LibreSSL.
However they need to link them as it's a requirement of httplib.
So let's declare this within httplib instead of core and web_services.

externals/CMakeLists.txt

@@ -87,6 +87,9 @@ if (ENABLE_WEB_SERVICE)
     add_subdirectory(libressl EXCLUDE_FROM_ALL)
     target_include_directories(ssl INTERFACE ./libressl/include)
     target_compile_definitions(ssl PRIVATE -DHAVE_INET_NTOP)
+    get_directory_property(OPENSSL_LIBRARIES
+        DIRECTORY libressl
+        DEFINITION OPENSSL_LIBS)
 
     # lurlparser
     add_subdirectory(lurlparser EXCLUDE_FROM_ALL)
@@ -94,6 +97,8 @@ if (ENABLE_WEB_SERVICE)
     # httplib
     add_library(httplib INTERFACE)
     target_include_directories(httplib INTERFACE ./httplib)
+    target_compile_definitions(httplib INTERFACE -DCPPHTTPLIB_OPENSSL_SUPPORT)
+    target_link_libraries(httplib INTERFACE ${OPENSSL_LIBRARIES})
 
     # JSON
     add_library(json-headers INTERFACE)

src/core/CMakeLists.txt

@@ -591,11 +591,8 @@ target_link_libraries(core PUBLIC common PRIVATE audio_core video_core)
 target_link_libraries(core PUBLIC Boost::boost PRIVATE fmt json-headers mbedtls opus unicorn)
 
 if (YUZU_ENABLE_BOXCAT)
-    get_directory_property(OPENSSL_LIBS
-        DIRECTORY ${PROJECT_SOURCE_DIR}/externals/libressl
-        DEFINITION OPENSSL_LIBS)
-    target_compile_definitions(core PRIVATE -DCPPHTTPLIB_OPENSSL_SUPPORT -DYUZU_ENABLE_BOXCAT)
-    target_link_libraries(core PRIVATE httplib json-headers ${OPENSSL_LIBS} zip)
+    target_compile_definitions(core PRIVATE -DYUZU_ENABLE_BOXCAT)
+    target_link_libraries(core PRIVATE httplib json-headers zip)
 endif()
 
 if (ENABLE_WEB_SERVICE)

src/web_service/CMakeLists.txt

@@ -8,9 +8,4 @@ add_library(web_service STATIC
 )
 
 create_target_directory_groups(web_service)
-
-get_directory_property(OPENSSL_LIBS
-        DIRECTORY ${PROJECT_SOURCE_DIR}/externals/libressl
-        DEFINITION OPENSSL_LIBS)
-target_compile_definitions(web_service PRIVATE -DCPPHTTPLIB_OPENSSL_SUPPORT)
-target_link_libraries(web_service PRIVATE common json-headers ${OPENSSL_LIBS} httplib lurlparser)
+target_link_libraries(web_service PRIVATE common json-headers httplib lurlparser)