improve libc time and MSVC simulator (#5775)

- [libc] 解决由于类unix操作系统发展历史原因fcntl.h定义的标志位在不同编译器中定义不同的问题
- [simulator] 部分宏定义转为全局宏定义以确保vs内置文件可以正确配置
- [simulator] 取消自欺欺人式的警告消除处理方式
- [libc][time] 优化time相关结构体在不同编译器下的包含

bsp/simulator/drivers/SConscript

 import sys
 import os
 from building import *
+Import('rtconfig')
 
 cwd = GetCurrentDir()
 src = Glob('*.c')
 LIBS = []
 LIBPATH = []
 CPPPATH = [cwd]
+CPPDEFINES = []
+
+if rtconfig.CROSS_TOOL == 'msvc':
+    CPPDEFINES += \
+    [
+        # avoid to conflict with the inherent STDC in VS
+        '_CRT_DECLARE_NONSTDC_NAMES=0',
+        # errno macro redefinition
+        '_CRT_ERRNO_DEFINED',
+        # time.h conflicts
+        '_CRT_NO_TIME_T',
+        # disable deprecation of unsafe functions, such as strncpy
+        '_CRT_SECURE_NO_WARNINGS',
+        # RT_VESRION conflicts in winuser.h
+        'NORESOURCE',
+    ]
 
 # remove no need file.
 if GetDepend('PKG_USING_GUIENGINE') == False:
@@ -30,7 +47,8 @@ if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_MODULE') == False:
 if sys.platform[0:5]=="linux": #check whether under linux
     SrcRemove(src, ['module_win32.c', 'dfs_win32.c'])
 
-group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH, LIBS=LIBS, LIBPATH=LIBPATH)
+group = DefineGroup('Drivers', src, depend = [''],
+            CPPPATH = CPPPATH, LIBS=LIBS, LIBPATH=LIBPATH, CPPDEFINES=CPPDEFINES)
 
 list = os.listdir(cwd)
 for item in list:

bsp/simulator/rtconfig_project.h

@@ -12,21 +12,9 @@
 
 #define RT_HEAP_SIZE   (1024*1024*8)
 
-#if defined(_MSC_VER)
-#define NORESOURCE  /* RT_VESRION in winuser.h */
-#define _CRT_ERRNO_DEFINED  /* errno macro redefinition */
-#define _INC_WTIME_INL /* dfs_elm.c time.h conflicts with wtime.inl */
-#define _INC_TIME_INL /* dfs_elm.c time.h conflicts with wtime.inl */
-#define _CRT_DECLARE_NONSTDC_NAMES 0 /* avoid to conflict with the inherent STDC in VS */
-
+#ifdef _MSC_VER
 /* disable some warning in MSC */
-#pragma warning(disable:4273)   /* to ignore: warning C4273: inconsistent dll linkage */
-#pragma warning(disable:4312)   /* to ignore: warning C4312: 'type cast' : conversion from 'rt_uint32_t' to 'rt_uint32_t *' */
-#pragma warning(disable:4311)   /* to ignore: warning C4311: 'type cast' : pointer truncation from 'short *__w64 ' to 'long' */
-#pragma warning(disable:4996)   /* to ignore: warning C4996: The POSIX name for this item is deprecated. */
-#pragma warning(disable:4267)   /* to ignore: warning C4267: conversion from 'size_t' to 'rt_size_t', possible loss of data */
-#pragma warning(disable:4244)   /* to ignore: warning C4244: '=' : conversion from '__w64 int' to 'rt_size_t', possible loss of data */
-
-#endif /* end of _MSC_VER */
+// #pragma warning(disable:4273)   /* to ignore: warning C4273: inconsistent dll linkage */
+#endif /* _MSC_VER */
 
-#endif
+#endif /* RTCONFIG_PROJECT_H__ */

components/libc/compilers/common/extension/SConscript

+import os
 from building import *
-
 Import('rtconfig')
 
 src   = []
@@ -9,6 +9,13 @@ group = []
 
 src += Glob('*.c')
 
-if rtconfig.PLATFORM != 'gcc' or rtconfig.ARCH == 'sim':
+if rtconfig.PLATFORM != 'gcc':
     group = DefineGroup('Compiler', src, depend = [''], CPPPATH = CPPPATH)
+
+list = os.listdir(cwd)
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        group = group + SConscript(os.path.join(d, 'SConscript'))
+
 Return('group')

components/libc/compilers/common/extension/fcntl/README.md

+Because of the history issue, flags in fcntl.h, such as O_CREAT, have difference types of value. Some OS use hex flags and others use octal flags.
+
+In terms of RT-Thread, Keil, IAR and MSVC use octal flags, which is located in the `tcntl/octal` folder; newlib uses hex flags; musl uses octal flags.
+

components/libc/compilers/common/extension/fcntl/SConscript

+# RT-Thread building script for bridge
+
+import os
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')

components/libc/compilers/common/extension/fcntl/octal/SConscript

+from building import *
+Import('rtconfig')
+
+src   = []
+cwd   = GetCurrentDir()
+CPPPATH = [cwd]
+group = []
+
+if rtconfig.PLATFORM == 'armcc' or\
+   rtconfig.PLATFORM == 'armclang' or\
+   rtconfig.PLATFORM == 'iar' or\
+   rtconfig.CROSS_TOOL == 'msvc':
+    group = DefineGroup('Compiler', src, depend = [''], CPPPATH = CPPPATH)
+Return('group')

components/libc/compilers/common/sys/time.h

@@ -18,7 +18,9 @@
 #include <time.h>
 #ifdef _WIN32
 #include <winsock.h> /* for struct timeval */
-#endif
+#include <corecrt.h> /* for __time64_t */
+typedef __time64_t time_t;
+#endif /* _WIN32 */
 
 #ifdef __cplusplus
 extern "C" {
@@ -50,17 +52,17 @@ struct timeval
     time_t      tv_sec;     /* seconds */
     suseconds_t tv_usec;    /* and microseconds */
 };
-#endif
+#endif /* !defined(_TIMEVAL_DEFINED) && !defined(_WIN32) */
 
-#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && \
-    !(defined(__ICCARM__) && (__VER__ >= 8010001)) && \
-    !defined(_WIN32)
+#if defined(__ARMCC_VERSION) || defined(_WIN32) || (defined(__ICCARM__) && (__VER__ >= 8010001))
 struct timespec
 {
     time_t  tv_sec;     /* seconds */
     long    tv_nsec;    /* and nanoseconds */
 };
+#endif /* defined(__ARMCC_VERSION) || defined(_WIN32) || (defined(__ICCARM__) && (__VER__ >= 8010001)) */
 
+#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/)
 /*
  * Structure defined by POSIX.1b to be like a itimerval, but with
  * timespecs. Used in the timer_*() system calls.
@@ -70,7 +72,7 @@ struct itimerspec
     struct timespec  it_interval;
     struct timespec  it_value;
 };
-#endif
+#endif /* !(defined(__GNUC__) && !defined(__ARMCC_VERSION)) */
 
 int stime(const time_t *t);
 time_t timegm(struct tm * const t);