初版适配和修改

GCC_COMPAT/include/math.h

@@ -0,0 +1,9 @@
+#ifndef GCC_COMPAT_MATH_H
+#define GCC_COMPAT_MATH_H
+
+double sqrt(double value);
+double pow(double base, double exponent);
+double atan(double value);
+double tan(double value);
+
+#endif

GCC_COMPAT/include/stdio.h

@@ -0,0 +1,15 @@
+#ifndef GCC_COMPAT_STDIO_H
+#define GCC_COMPAT_STDIO_H
+
+#include <stdarg.h>
+#include <stddef.h>
+
+typedef struct __gcc_compat_file FILE;
+
+int printf(const char *format, ...);
+int sprintf(char *buffer, const char *format, ...);
+int snprintf(char *buffer, size_t size, const char *format, ...);
+int vsnprintf(char *buffer, size_t size, const char *format, va_list args);
+int fputc(int ch, FILE *stream);
+
+#endif

GCC_COMPAT/include/stdlib.h

@@ -0,0 +1,8 @@
+#ifndef GCC_COMPAT_STDLIB_H
+#define GCC_COMPAT_STDLIB_H
+
+#include <stddef.h>
+
+int abs(int value);
+
+#endif

GCC_COMPAT/include/string.h

@@ -0,0 +1,12 @@
+#ifndef GCC_COMPAT_STRING_H
+#define GCC_COMPAT_STRING_H
+
+#include <stddef.h>
+
+void *memcpy(void *destination, const void *source, size_t count);
+void *memset(void *destination, int value, size_t count);
+int memcmp(const void *left, const void *right, size_t count);
+size_t strlen(const char *string);
+char *strcpy(char *destination, const char *source);
+
+#endif