methane · Oct 16, 2026 · Oct 16, 2026
diff --git a/Include/internal/pycore_fileutils.h b/Include/internal/pycore_fileutils.h
@@ -281,7 +281,7 @@ extern void _Py_skiproot(const wchar_t *path, Py_ssize_t size, Py_ssize_t *drvsi
 //      _Py_BEGIN_SUPPRESS_IPH
 //      ...
 //      _Py_END_SUPPRESS_IPH
-#if defined _MSC_VER && _MSC_VER >= 1900
+#if defined _MSC_VER
 
 #  include <stdlib.h>   // _set_thread_local_invalid_parameter_handler()
 
@@ -294,7 +294,7 @@ extern void _Py_skiproot(const wchar_t *path, Py_ssize_t size, Py_ssize_t *drvsi
 #else
 #  define _Py_BEGIN_SUPPRESS_IPH
 #  define _Py_END_SUPPRESS_IPH
-#endif /* _MSC_VER >= 1900 */
+#endif /* _MSC_VER */
 
 // Export for 'select' shared extension (Argument Clinic code)
 PyAPI_FUNC(int) _PyLong_FileDescriptor_Converter(PyObject *, void *);

diff --git a/Include/pymacconfig.h b/Include/pymacconfig.h
@@ -21,7 +21,6 @@
 #undef DOUBLE_IS_BIG_ENDIAN_IEEE754
 #undef DOUBLE_IS_LITTLE_ENDIAN_IEEE754
 #undef HAVE_GCC_ASM_FOR_X87
-#undef HAVE_GCC_ASM_FOR_X64
 
 #undef VA_LIST_IS_ARRAY
 #if defined(__LP64__) && defined(__x86_64__)
@@ -79,7 +78,6 @@
 #if defined(__i386__) || defined(__x86_64__)
 #  define HAVE_GCC_ASM_FOR_X87
 #  define ALIGNOF_MAX_ALIGN_T 16
-#  define HAVE_GCC_ASM_FOR_X64 1
 #  define SIZEOF_LONG_DOUBLE 16
 #else
 #  define ALIGNOF_MAX_ALIGN_T 8

diff --git a/Include/pyport.h b/Include/pyport.h
@@ -637,10 +637,6 @@ extern "C" {
 #  endif
 #endif
 
-#if defined(__sgi) && !defined(_SGI_MP_SOURCE)
-#  define _SGI_MP_SOURCE
-#endif
-
 // Explicit fallthrough in switch case to avoid warnings
 // with compiler flag -Wimplicit-fallthrough.
 //

diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
@@ -107,7 +107,7 @@ static const char PyCursesVersion[] = "2.2";
 #define CURSES_MODULE
 #include "py_curses.h"
 
-#if defined(HAVE_TERM_H) || defined(__sgi)
+#ifdef HAVE_TERM_H
 /* For termname, longname, putp, tigetflag, tigetnum, tigetstr, tparm
    which are not declared in SysV curses and for setupterm. */
 #include <term.h>
@@ -120,7 +120,7 @@ static const char PyCursesVersion[] = "2.2";
 #include <langinfo.h>
 #endif
 
-#if !defined(NCURSES_VERSION) && (defined(sgi) || defined(__sun) || defined(SCO5))
+#if !defined(NCURSES_VERSION) && (defined(__sun) || defined(SCO5))
 #define STRICT_SYSV_CURSES       /* Don't use ncurses extensions */
 typedef chtype attr_t;           /* No attr_t type is available */
 #endif

diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
@@ -310,13 +310,6 @@
 #endif
 
 
-#if !defined(_MSC_VER) && defined(__sgi) && _COMPILER_VERSION>=700
-/* declare ctermid_r if compiling with MIPSPro 7.x in ANSI C mode
-   (default) */
-extern char *ctermid_r(char *);
-#endif
-
-
 #if defined(__VXWORKS__)
 #  include <vxCpuLib.h>
 #  include <rtpLib.h>

diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
@@ -54,11 +54,6 @@
 #include <sys/poll.h>
 #endif
 
-#ifdef __sgi
-/* This is missing from unistd.h */
-extern void bzero(void *, int);
-#endif
-
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif

diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
@@ -190,7 +190,7 @@ shutdown(how) -- shut down traffic in one or both directions\n\
 #ifdef HAVE_GETHOSTBYNAME_R
 # if defined(_AIX) && !defined(_LINUX_SOURCE_COMPAT)
 #  define HAVE_GETHOSTBYNAME_R_3_ARG
-# elif defined(__sun) || defined(__sgi)
+# elif defined(__sun)
 #  define HAVE_GETHOSTBYNAME_R_5_ARG
 # elif defined(__linux__)
 /* Rely on the configure script */
@@ -216,29 +216,6 @@ shutdown(how) -- shut down traffic in one or both directions\n\
 #  include <netbt/sco.h>
 #endif
 
-#if defined(__sgi) && _COMPILER_VERSION>700 && !_SGIAPI
-/* make sure that the reentrant (gethostbyaddr_r etc)
-   functions are declared correctly if compiling with
-   MIPSPro 7.x in ANSI C mode (default) */
-
-/* XXX Using _SGIAPI is the wrong thing,
-   but I don't know what the right thing is. */
-#undef _SGIAPI /* to avoid warning */
-#define _SGIAPI 1
-
-#undef _XOPEN_SOURCE
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <netinet/in.h>
-#ifdef _SS_ALIGNSIZE
-#define HAVE_GETADDRINFO 1
-#define HAVE_GETNAMEINFO 1
-#endif
-
-#define HAVE_INET_PTON
-#include <netdb.h>
-#endif // __sgi
-
 /* Solaris fails to define this variable at all. */
 #if (defined(__sun) && defined(__SVR4)) && !defined(INET_ADDRSTRLEN)
 #define INET_ADDRSTRLEN 16
@@ -418,13 +395,8 @@ remove_unusable_flags(PyObject *m)
 #endif
 
 /* include Python's addrinfo.h unless it causes trouble */
-#if defined(__sgi) && _COMPILER_VERSION>700 && defined(_SS_ALIGNSIZE)
-  /* Do not include addinfo.h on some newer IRIX versions.
-   * _SS_ALIGNSIZE is defined in sys/socket.h by 6.5.21,
-   * for example, but not by 6.5.10.
-   */
-#elif defined(_MSC_VER) && _MSC_VER>1201
-  /* Do not include addrinfo.h for MSVC7 or greater. 'addrinfo' and
+#if defined(_MSC_VER)
+  /* Do not include addrinfo.h for MSVC. 'addrinfo' and
    * EAI_* constants are defined in (the already included) ws2tcpip.h.
    */
 #else

diff --git a/Modules/termios.c b/Modules/termios.c
@@ -21,12 +21,6 @@
 #  include <sys/termio.h>
 #endif
 
-// Apparently, on SGI, termios.h won't define CTRL if _XOPEN_SOURCE
-// is defined, so we define it here.
-#if defined(__sgi)
-#  define CTRL(c) ((c)&037)
-#endif
-
 // We could do better. Check bpo-32660
 #if defined(__sun)
 #  include <sys/filio.h>

@@ -854,14 +854,14 @@ time_strftime1(time_char **outbuf, size_t *bufsize,
             return NULL;
         }
         *outbuf = tmp;
-#if defined _MSC_VER && _MSC_VER >= 1400 && defined(__STDC_SECURE_LIB__)
+#if defined _MSC_VER && defined(__STDC_SECURE_LIB__)
         errno = 0;
 #endif
         _Py_BEGIN_SUPPRESS_IPH
         buflen = format_time(*outbuf, *bufsize, format, tm);
         _Py_END_SUPPRESS_IPH
-#if defined _MSC_VER && _MSC_VER >= 1400 && defined(__STDC_SECURE_LIB__)
-        /* VisualStudio .NET 2005 does this properly */
+#if defined _MSC_VER && defined(__STDC_SECURE_LIB__)
+        /* The secure CRT reports invalid format strings with EINVAL. */
         if (buflen == 0 && errno == EINVAL) {
             PyErr_SetString(PyExc_ValueError, "Invalid format string");
             return NULL;

@@ -2,10 +2,8 @@
 
 #include <stdlib.h>
 
-#if _MSC_VER >= 1900
-/* pyconfig.h uses this function in the _Py_BEGIN/END_SUPPRESS_IPH
- * macros. It does not need to be defined when building using MSVC
- * earlier than 14.0 (_MSC_VER == 1900).
+/* pycore_fileutils.h uses this function in the _Py_BEGIN/END_SUPPRESS_IPH
+ * macros.
  */
 
 static void __cdecl _silent_invalid_parameter_handler(
@@ -18,5 +16,3 @@ static void __cdecl _silent_invalid_parameter_handler(
 _invalid_parameter_handler _Py_silent_invalid_parameter_handler = _silent_invalid_parameter_handler;
 
 #endif
-
-#endif
@@ -50,9 +50,7 @@ WIN32 is still required for the locale module.
 
 #define HAVE_IO_H
 #define HAVE_SYS_UTIME_H
-#define HAVE_TEMPNAM
 #define HAVE_TMPFILE
-#define HAVE_TMPNAM
 #define HAVE_CLOCK
 #define HAVE_STRERROR
 
@@ -254,11 +252,7 @@ typedef _W64 int Py_ssize_t;
 
 typedef int pid_t;
 
-/* define some ANSI types that are not defined in earlier Win headers */
-#if _MSC_VER >= 1200
-/* This file only exists in VC 6.0 or higher */
 #include <basetsd.h>
-#endif
 
 #endif /* _MSC_VER */
 
@@ -385,8 +379,7 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 #       define SIZEOF_HKEY 4
 #       define SIZEOF_SIZE_T 4
 #       define ALIGNOF_SIZE_T 4
-        /* MS VS2005 changes time_t to a 64-bit type on all platforms */
-#       if defined(_MSC_VER) && _MSC_VER >= 1400
+#       if defined(_MSC_VER)
 #       define SIZEOF_TIME_T 8
 #       else
 #       define SIZEOF_TIME_T 4
@@ -404,18 +397,9 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 #define SIZEOF_DOUBLE 8
 #define SIZEOF_FLOAT 4
 
-/* VC 7.1 has them and VC 6.0 does not.  VC 6.0 has a version number of 1200.
-   Microsoft eMbedded Visual C++ 4.0 has a version number of 1201 and doesn't
-   define these.
-   If some compiler does not provide them, modify the #if appropriately. */
 #if defined(_MSC_VER)
-#if _MSC_VER > 1300
 #define HAVE_UINTPTR_T 1
 #define HAVE_INTPTR_T 1
-#else
-/* VC6, VS 2002 and eVC4 don't support the C99 LL suffix for 64-bit integer literals */
-#define Py_LL(x) x##I64
-#endif  /* _MSC_VER > 1300  */
 #endif  /* _MSC_VER */
 
 #endif
@@ -522,9 +506,6 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 /* Define if you have the putenv function.  */
 #define HAVE_PUTENV
 
-/* Define if your compiler supports function prototypes */
-#define HAVE_PROTOTYPES
-
 /* Define if  you can safely include both <sys/select.h> and <sys/time.h>
    (which you can't on SCO ODT 3.0). */
 /* #undef SYS_SELECT_WITH_SYS_TIME */
@@ -554,9 +535,6 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 /* Define when any dynamic module loading is enabled */
 #define HAVE_DYNAMIC_LOADING
 
-/* Define if you have ftime.  */
-#define HAVE_FTIME
-
 /* Define if you have getpeername.  */
 #define HAVE_GETPEERNAME
 
@@ -569,9 +547,6 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 /* Define if you have gettimeofday.  */
 /* #undef HAVE_GETTIMEOFDAY */
 
-/* Define if you have getwd.  */
-/* #undef HAVE_GETWD */
-
 /* Define if you have lstat.  */
 /* #undef HAVE_LSTAT */
 
@@ -624,7 +599,7 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 /* #undef HAVE_WAITPID */
 
 /* Define to 1 if you have the `wcsftime' function. */
-#if defined(_MSC_VER) && _MSC_VER >= 1310
+#if defined(_MSC_VER)
 #define HAVE_WCSFTIME 1
 #endif
 
@@ -655,9 +630,6 @@ Py_NO_ENABLE_SHARED to find out.  Also support MS_NO_COREDLL for b/w compat */
 /* Define if you have the <stddef.h> header file.  */
 #define HAVE_STDDEF_H 1
 
-/* Define if you have the <sys/audioio.h> header file.  */
-/* #undef HAVE_SYS_AUDIOIO_H */
-
 /* Define if you have the <sys/param.h> header file.  */
 /* #define HAVE_SYS_PARAM_H 1 */
 

@@ -11,15 +11,6 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
-#if defined(__NetBSD__)
-#include <sys/param.h>
-#if (NetBSD < 199712)
-#include <nlist.h>
-#include <link.h>
-#define dlerror() "error in dynamic linking"
-#endif
-#endif /* NetBSD */
-
 #ifdef HAVE_DLFCN_H
 #include <dlfcn.h>
 #endif

diff --git a/Python/mystrtoul.c b/Python/mystrtoul.c
@@ -8,10 +8,6 @@
 #include "Python.h"
 #include "pycore_long.h"          // _PyLong_DigitValue
 
-#if defined(__sgi) && !defined(_SGI_MP_SOURCE)
-#  define _SGI_MP_SOURCE
-#endif
-
 /* strtol and strtoul, renamed to avoid conflicts */
 
 

@@ -3991,8 +3991,8 @@ PyOS_getsig(int sig)
     return context.sa_handler;
 #else
     PyOS_sighandler_t handler;
-/* Special signal handling for the secure CRT in Visual Studio 2005 */
-#if defined(_MSC_VER) && _MSC_VER >= 1400
+/* Special signal handling for the secure CRT */
+#if defined(_MSC_VER)
     switch (sig) {
     /* Only these signals are valid */
     case SIGINT:
@@ -4007,7 +4007,7 @@ PyOS_getsig(int sig)
     default:
         return SIG_ERR;
     }
-#endif /* _MSC_VER && _MSC_VER >= 1400 */
+#endif /* _MSC_VER */
     handler = signal(sig, SIG_IGN);
     if (handler != SIG_ERR)
         signal(sig, handler);