CURL lib and include directories private for exiv2lib

(cherry picked from commit 5d64a0b11c5a45dd9d58c56e946301f3f98942a7)

samples/CMakeLists.txt

@@ -96,6 +96,20 @@ endif()
 add_executable(conntest conntest.cpp)
 list(APPEND APPLICATIONS conntest)
 
+if (EXIV2_ENABLE_WEBREADY)
+    if( EXIV2_ENABLE_CURL )
+        target_include_directories(conntest SYSTEM PRIVATE ${CURL_INCLUDE_DIR} )
+        target_link_libraries(conntest PRIVATE ${CURL_LIBRARIES})
+        if (USING_CONAN)
+            target_compile_definitions(conntest PRIVATE ${CONAN_COMPILE_DEFINITIONS_LIBCURL})
+            target_link_libraries(conntest PRIVATE ${CONAN_EXE_LINKER_FLAGS_LIBCURL})
+            if (NOT APPLE)
+                target_link_libraries(conntest PRIVATE CONAN_PKG::OpenSSL)
+            endif()
+        endif()
+    endif()
+endif()
+
 # ******************************************************************************
 # remotetest application
 add_executable(remotetest remotetest.cpp)

src/CMakeLists.txt

@@ -179,13 +179,13 @@ if (EXIV2_ENABLE_WEBREADY)
     endif()
 
     if( EXIV2_ENABLE_CURL )
-        target_include_directories(exiv2lib SYSTEM PUBLIC ${CURL_INCLUDE_DIR} )
-        target_link_libraries(exiv2lib PUBLIC ${CURL_LIBRARIES})
+        target_include_directories(exiv2lib SYSTEM PRIVATE ${CURL_INCLUDE_DIR} )
+        target_link_libraries(exiv2lib PRIVATE ${CURL_LIBRARIES})
         if (USING_CONAN)
-            target_compile_definitions(exiv2lib PUBLIC ${CONAN_COMPILE_DEFINITIONS_LIBCURL})
-            target_link_libraries(exiv2lib PUBLIC ${CONAN_EXE_LINKER_FLAGS_LIBCURL})
+            target_compile_definitions(exiv2lib PRIVATE ${CONAN_COMPILE_DEFINITIONS_LIBCURL})
+            target_link_libraries(exiv2lib PRIVATE ${CONAN_EXE_LINKER_FLAGS_LIBCURL})
             if (NOT APPLE)
-                target_link_libraries(exiv2lib PUBLIC CONAN_PKG::OpenSSL)
+                target_link_libraries(exiv2lib PRIVATE CONAN_PKG::OpenSSL)
             endif()
         endif()
     endif()