feat: add various detector.

- add endian and compiler detector, and modify os detector.
- now we use CMake to add detector-used macro, instead of using some C++ features to detect them.
- change Windows environment detection according to the change of os detector.

src/yycc/macro/compiler_detector.hpp

@@ -0,0 +1,5 @@
+#pragma once
+
+#if (defined(YYCC_CC_MSVC) + defined(YYCC_CC_GCC) + defined(YYCC_CC_CLANG)) != 1
+#error "Current compiler is not supported!"
+#endif

src/yycc/macro/endian_detector.hpp

@@ -0,0 +1,7 @@
+#pragma once
+
+// Check endian
+#if (defined(YYCC_ENDIAN_LITTLE) + defined(YYCC_ENDIAN_BIG)) != 1
+#error "Current system endian (byte order) is not supported!"
+#endif
+

src/yycc/macro/os_detector.hpp

@@ -1,11 +1,6 @@
 #pragma once
 
-// Define operating system macros
-#define YYCC_OS_WINDOWS 2
-#define YYCC_OS_LINUX 3
-// Check current operating system.
-#if defined(_WIN32)
-#define YYCC_OS YYCC_OS_WINDOWS
-#else
-#define YYCC_OS YYCC_OS_LINUX
+// Check OS macro
+#if (defined(YYCC_OS_WINDOWS) + defined(YYCC_OS_LINUX)) != 1
+#error "Current operating system is not supported!"
 #endif