Build for older targets

CMakeLists.txt

@@ -29,7 +29,11 @@ file(
 source_group("" FILES ${SRC})
 
 add_library(qoi SHARED ${SRC})
-set_target_properties(qoi PROPERTIES CXX_STANDARD 17)
+if(MaxSDK_VERSION VERSION_GREATER 2019)
+  set_target_properties(qoi PROPERTIES CXX_STANDARD 17)
+else()
+  set_target_properties(qoi PROPERTIES CXX_STANDARD 14)
+endif()
 set_target_properties(qoi PROPERTIES SUFFIX ".bmi")
 target_link_libraries(qoi ${MaxSDK_LIBRARIES})
 include_directories(${MaxSDK_INCLUDE_DIR} qoi)

platform.h

@@ -66,24 +66,15 @@ using std::min;
 // C++
 #ifdef __cplusplus
 
-// Require C++17
-#if defined(_MSC_VER) && (!defined(_HAS_CXX17) || !_HAS_CXX17)
-static_assert(false, "C++17 is required");
-#endif
-
 // Define null, with color highlight
 #ifndef null
 constexpr decltype(nullptr) null = nullptr;
 #define null null
 #endif
 
 // Include STL string and allow string literals.
-// Always use sv suffix when declaring string literals.
-// Ideally, assign them as `constexpr std::string_view`.
 #include <string>
-#include <string_view>
 using namespace std::string_literals;
-using namespace std::string_view_literals;
 
 // Functional
 #include <functional>

qoiio.cpp

@@ -249,7 +249,7 @@ BMMRES BitmapIO_QOI::GetImageInfo(BitmapInfo *pbi)
 	});
 
 	// Read header
-	static_assert(QOI_HEADER_SIZE == 14);
+	static_assert(QOI_HEADER_SIZE == 14, "Header size mismatch");
 	unsigned char header[QOI_HEADER_SIZE];
 	if (fread(header, 1, QOI_HEADER_SIZE, fi) != QOI_HEADER_SIZE)
 		return BMMRES_INVALIDFORMAT;