Undiamond Python headers

This change gets the Python codebase into a state where it conforms to
the conventions of this codebase. It's now possible to include headers
from Python, without worrying about ordering. Python has traditionally
solved that problem by "diamonding" everything in Python.h, but that's
problematic since it means any change to any Python header invalidates
all the build artifacts. Lastly it makes tooling not work. Since it is
hard to explain to Emacs when I press C-c C-h to add an import line it
shouldn't add the header that actually defines the symbol, and instead
do follow the nonstandard Python convention.

Progress has been made on letting Python load source code from the zip
executable structure via the standard C library APIs. System calss now
recognizes zip!FILENAME alternative URIs as equivalent to zip:FILENAME
since Python uses colon as its delimiter.

Some progress has been made on embedding the notice license terms into
the Python object code. This is easier said than done since Python has
an extremely complicated ownership story.

- Some termios APIs have been added
- Implement rewinddir() dirstream API
- GetCpuCount() API added to Cosmopolitan Libc
- More bugs in Cosmopolitan Libc have been fixed
- zipobj.com now has flags for mangling the path
- Fixed bug a priori with sendfile() on certain BSDs
- Polyfill F_DUPFD and F_DUPFD_CLOEXEC across platforms
- FIOCLEX / FIONCLEX now polyfilled for fast O_CLOEXEC changes
- APE now supports a hybrid solution to no-self-modify for builds
- Many BSD-only magnums added, e.g. O_SEARCH, O_SHLOCK, SF_NODISKIO

third_party/python/pyconfig.h

@@ -1,5 +1,6 @@
 #ifndef Py_PYCONFIG_H
 #define Py_PYCONFIG_H
+#include "third_party/zlib/zlib.h"
 
 /* Define if building universal (internal helper macro) */
 /* #undef AC_APPLE_UNIVERSAL_BUILD */
@@ -51,9 +52,6 @@
 /* Define if aligned memory access is required */
 /* #undef HAVE_ALIGNED_REQUIRED */
 
-/* Define to 1 if you have the <alloca.h> header file. */
-#define HAVE_ALLOCA_H 1
-
 /* Define this if your time.h defines altzone. */
 /* #undef HAVE_ALTZONE */
 
@@ -130,15 +128,9 @@
 /* Define to 1 if you have the `confstr' function. */
 /* #undef HAVE_CONFSTR */
 
-/* Define to 1 if you have the <conio.h> header file. */
-/* #undef HAVE_CONIO_H */
-
 /* Define to 1 if you have the `copysign' function. */
 #define HAVE_COPYSIGN 1
 
-/* Define to 1 if you have the <crypt.h> header file. */
-/* #undef HAVE_CRYPT_H */
-
 /* Define to 1 if you have the `ctermid' function. */
 /* #undef HAVE_CTERMID */
 
@@ -148,9 +140,6 @@
 /* Define if you have the 'filter' function. */
 #define HAVE_CURSES_FILTER 1
 
-/* Define to 1 if you have the <curses.h> header file. */
-#define HAVE_CURSES_H 1
-
 /* Define if you have the 'has_key' function. */
 #define HAVE_CURSES_HAS_KEY 1
 
@@ -234,22 +223,12 @@
 /* Define to 1 if you have the /dev/ptmx device file. */
 #define HAVE_DEV_PTMX 1
 
-/* Define to 1 if you have the <direct.h> header file. */
-/* #undef HAVE_DIRECT_H */
-
 /* Define to 1 if the dirent structure has a d_type field */
 #define HAVE_DIRENT_D_TYPE 1
 
-/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
- */
-#define HAVE_DIRENT_H 1
-
 /* Define if you have the 'dirfd' function or macro. */
 #define HAVE_DIRFD 1
 
-/* Define to 1 if you have the <dlfcn.h> header file. */
-#define HAVE_DLFCN_H 1
-
 /* Define to 1 if you have the `dlopen' function. */
 #define HAVE_DLOPEN 1
 
@@ -262,14 +241,11 @@
 /* Defined when any dynamic module loading is enabled. */
 #define HAVE_DYNAMIC_LOADING 1
 
-/* Define to 1 if you have the <endian.h> header file. */
-/* #undef HAVE_ENDIAN_H */
-
 /* Define if you have the 'epoll' functions. */
-#define HAVE_EPOLL 1
+/* #define HAVE_EPOLL 1 */
 
 /* Define if you have the 'epoll_create1' function. */
-#define HAVE_EPOLL_CREATE1 1
+/* #define HAVE_EPOLL_CREATE1 1 */
 
 /* Define to 1 if you have the `erf' function. */
 #define HAVE_ERF 1
@@ -277,9 +253,6 @@
 /* Define to 1 if you have the `erfc' function. */
 #define HAVE_ERFC 1
 
-/* Define to 1 if you have the <errno.h> header file. */
-#define HAVE_ERRNO_H 1
-
 /* Define to 1 if you have the `execv' function. */
 #define HAVE_EXECV 1
 
@@ -389,8 +362,8 @@
 /* Define if you have the getaddrinfo function. */
 #define HAVE_GETADDRINFO 1
 
-/* Define this if you have flockfile(), getc_unlocked(), and funlockfile() */
-#define HAVE_GETC_UNLOCKED 1
+/* In Cosmopolitan the unlocked functions are slower. */
+/* #undef HAVE_GETC_UNLOCKED */
 
 /* Define to 1 if you have the `getentropy' function. */
 #define HAVE_GETENTROPY 1
@@ -453,7 +426,7 @@
 #define HAVE_GETRANDOM 1
 
 /* Define to 1 if the Linux getrandom() syscall is available */
-/* #undef HAVE_GETRANDOM_SYSCALL */
+/* #define HAVE_GETRANDOM_SYSCALL */
 
 /* Define to 1 if you have the `getresgid' function. */
 /* #undef HAVE_GETRESGID */
@@ -637,7 +610,7 @@
 #define HAVE_MKFIFO 1
 
 /* Define to 1 if you have the `mkfifoat' function. */
-/* #undef HAVE_MKFIFOAT */
+#define HAVE_MKFIFOAT 1
 
 /* Define to 1 if you have the `mknod' function. */
 #define HAVE_MKNOD 1
@@ -690,9 +663,6 @@
 /* Define to 1 if you have the `poll' function. */
 #define HAVE_POLL 1
 
-/* Define to 1 if you have the <poll.h> header file. */
-#define HAVE_POLL_H 1
-
 /* Define to 1 if you have the `posix_fadvise' function. */
 #define HAVE_POSIX_FADVISE 1
 
@@ -708,18 +678,12 @@
 /* Define to 1 if you have the <process.h> header file. */
 /* #undef HAVE_PROCESS_H */
 
-/* Define if your compiler supports function prototype */
-#define HAVE_PROTOTYPES 1
-
 /* Define to 1 if you have the `pthread_atfork' function. */
 /* #undef HAVE_PTHREAD_ATFORK */
 
 /* Defined for Solaris 2.6 bug in pthread header. */
 /* #undef HAVE_PTHREAD_DESTRUCTOR */
 
-/* Define to 1 if you have the <pthread.h> header file. */
-#define HAVE_PTHREAD_H 1
-
 /* Define to 1 if you have the `pthread_init' function. */
 /* #undef HAVE_PTHREAD_INIT */
 
@@ -738,11 +702,9 @@
 /* Define to 1 if you have the `pwrite' function. */
 #define HAVE_PWRITE 1
 
-/* Define to 1 if you have the `readlink' function. */
-#define HAVE_READLINK 1
-
-/* Define to 1 if you have the `readlinkat' function. */
-#define HAVE_READLINKAT 1
+/* won't support readlink() because it's frequently abused */
+/* #define HAVE_READLINK 1 */
+/* #define HAVE_READLINKAT 1 */
 
 /* Define to 1 if you have the `readv' function. */
 #define HAVE_READV 1
@@ -753,6 +715,8 @@
 /* Define to 1 if you have the `renameat' function. */
 #define HAVE_RENAMEAT 1
 
+#define HAVE_DIRENT_H 1
+
 /* Define if readline supports append_history */
 /* #undef HAVE_RL_APPEND_HISTORY */
 
@@ -1224,7 +1188,7 @@
 #define HAVE_WRITEV 1
 
 /* Define if the zlib library has inflateCopy */
-/* #undef HAVE_ZLIB_COPY */
+#define HAVE_ZLIB_COPY 1
 
 /* Define to 1 if you have the `_getpty' function. */
 /* #undef HAVE__GETPTY */
@@ -1289,9 +1253,6 @@
 /* Define if setpgrp() must be called as setpgrp(0, 0). */
 /* #undef SETPGRP_HAVE_ARG */
 
-/* Define if i>>j for signed int i does not extend the sign bit when i < 0 */
-/* #undef SIGNED_RIGHT_SHIFT_ZERO_FILLS */
-
 /* The size of `double', as computed by sizeof. */
 #define SIZEOF_DOUBLE 8
 
@@ -1368,27 +1329,6 @@
 /* Define to use the C99 inline keyword. */
 #define USE_INLINE 1
 
-/* Enable extensions on AIX 3, Interix.  */
-#ifndef _ALL_SOURCE
-#define _ALL_SOURCE 1
-#endif
-/* Enable GNU extensions on systems that have them.  */
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE 1
-#endif
-/* Enable threading extensions on Solaris.  */
-#ifndef _POSIX_PTHREAD_SEMANTICS
-#define _POSIX_PTHREAD_SEMANTICS 1
-#endif
-/* Enable extensions on HP NonStop.  */
-#ifndef _TANDEM_SOURCE
-#define _TANDEM_SOURCE 1
-#endif
-/* Enable general extensions on Solaris.  */
-#ifndef __EXTENSIONS__
-#define __EXTENSIONS__ 1
-#endif
-
 /* Define if you want SIGFPE handled (see Include/pyfpe.h). */
 /* #undef WANT_SIGFPE_HANDLER */
 
@@ -1536,9 +1476,8 @@
 /* Define to empty if the keyword does not work. */
 /* #undef volatile */
 
-/* Define the macros needed if on a UnixWare 7.x system. */
-#if defined(__USLC__) && defined(__SCO_VERSION__)
-#define STRICT_SYSV_CURSES /* Don't use ncurses extensions */
-#endif
+/* #define _Py_MEMORY_SANITIZER */
+
+#define Py_NSIG 32
 
 #endif /*Py_PYCONFIG_H*/