build : suppress gcc15 compile warnings (#14261)

* Change _contains_any() substrs to std::string_view and fix the find comparison logic.

common/common.cpp

@@ -706,11 +706,17 @@ bool fs_validate_filename(const std::string & filename) {
         // disable C++17 deprecation warning for std::codecvt_utf8
 #    pragma clang diagnostic push
 #    pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(__GNUC__)
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif
+
         std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> converter;
 
 #if defined(__clang__)
 #    pragma clang diagnostic pop
+#elif defined(__GNUC__)
+#    pragma GCC diagnostic pop
 #endif
 
         filename_utf32 = converter.from_bytes(filename);

ggml/src/ggml-backend-reg.cpp

@@ -69,6 +69,9 @@
 #if defined(__clang__)
 #    pragma clang diagnostic push
 #    pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(__GNUC__)
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif
 
 namespace fs = std::filesystem;
@@ -91,6 +94,8 @@ static std::string path_str(const fs::path & path) {
 
 #if defined(__clang__)
 #    pragma clang diagnostic pop
+#elif defined(__GNUC__)
+#    pragma GCC diagnostic pop
 #endif
 
 #ifdef _WIN32

src/llama-vocab.cpp

@@ -2060,9 +2060,9 @@ void llama_vocab::impl::load(llama_model_loader & ml, const LLM_KV & kv) {
     //NOTE: Per token attributes are missing from the GGUF file.
     //TODO: Extract attributes from GGUF file.
     {
-        auto _contains_any = [] (const std::string & str, const std::vector<std::string> & substrs) -> bool {
+        auto _contains_any = [] (const std::string & str, const std::vector<std::string_view> & substrs) -> bool {
             for (const auto & substr : substrs) {
-                if (str.find(substr) < std::string::npos) {
+                if (str.find(substr) != std::string::npos) {
                     return true;
                 }
             }

src/unicode.cpp

@@ -204,12 +204,17 @@ static inline std::wstring unicode_wstring_from_utf8(const std::string & s) {
     // disable C++17 deprecation warning for std::codecvt_utf8
 #    pragma clang diagnostic push
 #    pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(__GNUC__)
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif
 
     std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
 
 #if defined(__clang__)
 #    pragma clang diagnostic pop
+#elif defined(__GNUC__)
+#    pragma GCC diagnostic pop
 #endif
 
     return conv.from_bytes(s);