Add guards to check if curl is available

openVulkanoCpp/Host/WebResourceLoader.cpp

@@ -11,7 +11,10 @@
 
 #include <fstream>
 #include <sstream>
+#if __has_include("curl/curl.h")
 #include <curl/curl.h>
+#define HAS_CURL
+#endif
 
 namespace OpenVulkano
 {
@@ -35,10 +38,17 @@ namespace OpenVulkano
 	{
 		m_cacheDirectory = AppFolders::GetAppCacheDir() / "resources";
 		std::filesystem::create_directories(m_cacheDirectory);
+#ifdef HAS_CURL
 		curl_global_init(CURL_GLOBAL_DEFAULT);
+#endif
 	}
 
-	WebResourceLoader::~WebResourceLoader() { curl_global_cleanup(); }
+	WebResourceLoader::~WebResourceLoader()
+	{
+#ifdef HAS_CURL
+		curl_global_cleanup();
+#endif
+	}
 
 	std::filesystem::path WebResourceLoader::GetCacheFilePath(const std::string& url)
 	{
@@ -51,7 +61,7 @@ namespace OpenVulkano
 	Array<char> WebResourceLoader::DownloadResource(const std::string& url)
 	{
 		std::vector<char> buffer;
-
+#ifdef HAS_CURL
 		CURL* curl = curl_easy_init();
 		if (curl)
 		{
@@ -76,6 +86,7 @@ namespace OpenVulkano
 		std::filesystem::path cacheFilePath = GetCacheFilePath(url);
 		std::ofstream file(cacheFilePath, std::ios::binary);
 		file.write(buffer.data(), buffer.size());
+#endif
 		return Array<char>(buffer);
 	}
 
@@ -89,4 +100,4 @@ namespace OpenVulkano
 		}
 		return Array<char>();
 	}
-}
+}