bpo-40280: Move hard-coded feature checks to configure (GH-29789)

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>

Misc/NEWS.d/next/Build/2021-11-26-09-10-19.bpo-40280.xmiMJl.rst

@@ -0,0 +1,3 @@
+``configure`` now checks for functions ``fork1, getegid,
+geteuid, getgid, getppid, getuid, opendir, pipe, system, wait,
+ttyname``.

Modules/posixmodule.c

@@ -320,26 +320,6 @@ corresponding Unix manual entries for more information on calls.");
 #    define HAVE_CWAIT      1
 #    define HAVE_FSYNC      1
 #    define fsync _commit
-#  else
-     /* Unix functions that the configure script doesn't check for */
-#    ifndef __VXWORKS__
-#      define HAVE_EXECV      1
-#      define HAVE_FORK       1
-#      if defined(__USLC__) && defined(__SCO_VERSION__)       /* SCO UDK Compiler */
-#        define HAVE_FORK1      1
-#      endif
-#    endif
-#    define HAVE_GETEGID    1
-#    define HAVE_GETEUID    1
-#    define HAVE_GETGID     1
-#    define HAVE_GETPPID    1
-#    define HAVE_GETUID     1
-#    define HAVE_KILL       1
-#    define HAVE_OPENDIR    1
-#    define HAVE_PIPE       1
-#    define HAVE_SYSTEM     1
-#    define HAVE_WAIT       1
-#    define HAVE_TTYNAME    1
 #  endif  /* _MSC_VER */
 #endif  /* ! __WATCOMC__ || __QNX__ */
 

configure

@@ -13376,31 +13376,32 @@ $as_echo "$MACHDEP_OBJS" >&6; }
 fi
 
 # checks for library functions
-for ac_func in alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
+for ac_func in  \
- clock confstr close_range copy_file_range ctermid dup3 execv explicit_bzero \
+  accept4 alarm bind_textdomain_codeset chown clock close_range confstr \
- explicit_memset faccessat fchmod fchmodat fchown fchownat \
+  copy_file_range ctermid dup3 execv explicit_bzero explicit_memset \
- fdwalk fexecve fdopendir fork fpathconf fstatat ftime ftruncate futimesat \
+  faccessat fchmod fchmodat fchown fchownat fdopendir fdwalk fexecve \
- futimens futimes gai_strerror getentropy \
+  fork fork1 fpathconf fstatat ftime ftruncate futimens futimes futimesat \
- getgrgid getgrgid_r getgrnam_r \
+  gai_strerror getegid getentropy geteuid getgid getgrgid getgrgid_r \
- getgrouplist getgroups getlogin getloadavg getpeername getpgid getpid \
+  getgrnam_r getgrouplist getgroups getitimer getloadavg getlogin \
- getpriority getresuid getresgid getpwent getpwnam_r getpwuid_r getspnam getspent getsid getwd \
+  getpeername getpgid getpid getppid getpriority _getpty \
- if_nameindex \
+  getpwent getpwnam_r getpwuid_r getresgid getresuid getsid getspent \
- initgroups kill killpg lchown lockf linkat lstat lutimes mmap \
+  getspnam getuid getwd if_nameindex initgroups kill killpg lchown linkat \
- memrchr mbrtowc mkdirat mkfifo \
+  lockf lstat lutimes madvise mbrtowc memrchr mkdirat mkfifo mkfifoat \
- madvise mkfifoat mknod mknodat mktime mremap nice openat pathconf pause pipe2 plock poll \
+  mknod mknodat mktime mmap mremap nice openat opendir pathconf pause pipe \
- posix_fallocate posix_fadvise posix_spawn posix_spawnp pread preadv preadv2 \
+  pipe2 plock poll posix_fadvise posix_fallocate posix_spawn posix_spawnp \
- pthread_condattr_setclock pthread_init pthread_kill pwrite pwritev pwritev2 \
+  pread preadv preadv2 pthread_condattr_setclock pthread_init pthread_kill \
- readlink readlinkat readv realpath renameat \
+  pwrite pwritev pwritev2 readlink readlinkat readv realpath renameat \
- sem_open sem_timedwait sem_clockwait sem_getvalue sem_unlink sendfile setegid seteuid \
+  rtpSpawn sched_get_priority_max sched_rr_get_interval sched_setaffinity \
- setgid sethostname \
+  sched_setparam sched_setscheduler sem_clockwait sem_getvalue sem_open \
- setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \
+  sem_timedwait sem_unlink sendfile setegid seteuid setgid sethostname \
- sched_get_priority_max sched_setaffinity sched_setscheduler sched_setparam \
+  setitimer setlocale setpgid setpgrp setpriority setregid setresgid \
- sched_rr_get_interval shutdown \
+  setresuid setreuid setsid setuid setvbuf shutdown sigaction sigaltstack \
- sigaction sigaltstack sigfillset siginterrupt sigpending sigrelse \
+  sigfillset siginterrupt sigpending sigrelse sigtimedwait sigwait \
- sigtimedwait sigwait sigwaitinfo snprintf splice strftime strlcpy strsignal symlinkat sync \
+  sigwaitinfo snprintf splice strftime strlcpy strsignal symlinkat sync \
- sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
+  sysconf system tcgetpgrp tcsetpgrp tempnam timegm times tmpfile \
- truncate uname unlinkat utimensat utimes vfork waitid waitpid wait3 wait4 \
+  tmpnam tmpnam_r truncate ttyname uname unlinkat utimensat utimes vfork \
- wcscoll wcsftime wcsxfrm wmemcmp writev _getpty rtpSpawn
+  wait wait3 wait4 waitid waitpid wcscoll wcsftime wcsxfrm wmemcmp writev \
+
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

configure.ac

@@ -3937,31 +3937,32 @@ else
 fi
 
 # checks for library functions
-AC_CHECK_FUNCS(alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
+AC_CHECK_FUNCS([ \
- clock confstr close_range copy_file_range ctermid dup3 execv explicit_bzero \
+  accept4 alarm bind_textdomain_codeset chown clock close_range confstr \
- explicit_memset faccessat fchmod fchmodat fchown fchownat \
+  copy_file_range ctermid dup3 execv explicit_bzero explicit_memset \
- fdwalk fexecve fdopendir fork fpathconf fstatat ftime ftruncate futimesat \
+  faccessat fchmod fchmodat fchown fchownat fdopendir fdwalk fexecve \
- futimens futimes gai_strerror getentropy \
+  fork fork1 fpathconf fstatat ftime ftruncate futimens futimes futimesat \
- getgrgid getgrgid_r getgrnam_r \
+  gai_strerror getegid getentropy geteuid getgid getgrgid getgrgid_r \
- getgrouplist getgroups getlogin getloadavg getpeername getpgid getpid \
+  getgrnam_r getgrouplist getgroups getitimer getloadavg getlogin \
- getpriority getresuid getresgid getpwent getpwnam_r getpwuid_r getspnam getspent getsid getwd \
+  getpeername getpgid getpid getppid getpriority _getpty \
- if_nameindex \
+  getpwent getpwnam_r getpwuid_r getresgid getresuid getsid getspent \
- initgroups kill killpg lchown lockf linkat lstat lutimes mmap \
+  getspnam getuid getwd if_nameindex initgroups kill killpg lchown linkat \
- memrchr mbrtowc mkdirat mkfifo \
+  lockf lstat lutimes madvise mbrtowc memrchr mkdirat mkfifo mkfifoat \
- madvise mkfifoat mknod mknodat mktime mremap nice openat pathconf pause pipe2 plock poll \
+  mknod mknodat mktime mmap mremap nice openat opendir pathconf pause pipe \
- posix_fallocate posix_fadvise posix_spawn posix_spawnp pread preadv preadv2 \
+  pipe2 plock poll posix_fadvise posix_fallocate posix_spawn posix_spawnp \
- pthread_condattr_setclock pthread_init pthread_kill pwrite pwritev pwritev2 \
+  pread preadv preadv2 pthread_condattr_setclock pthread_init pthread_kill \
- readlink readlinkat readv realpath renameat \
+  pwrite pwritev pwritev2 readlink readlinkat readv realpath renameat \
- sem_open sem_timedwait sem_clockwait sem_getvalue sem_unlink sendfile setegid seteuid \
+  rtpSpawn sched_get_priority_max sched_rr_get_interval sched_setaffinity \
- setgid sethostname \
+  sched_setparam sched_setscheduler sem_clockwait sem_getvalue sem_open \
- setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \
+  sem_timedwait sem_unlink sendfile setegid seteuid setgid sethostname \
- sched_get_priority_max sched_setaffinity sched_setscheduler sched_setparam \
+  setitimer setlocale setpgid setpgrp setpriority setregid setresgid \
- sched_rr_get_interval shutdown \
+  setresuid setreuid setsid setuid setvbuf shutdown sigaction sigaltstack \
- sigaction sigaltstack sigfillset siginterrupt sigpending sigrelse \
+  sigfillset siginterrupt sigpending sigrelse sigtimedwait sigwait \
- sigtimedwait sigwait sigwaitinfo snprintf splice strftime strlcpy strsignal symlinkat sync \
+  sigwaitinfo snprintf splice strftime strlcpy strsignal symlinkat sync \
- sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
+  sysconf system tcgetpgrp tcsetpgrp tempnam timegm times tmpfile \
- truncate uname unlinkat utimensat utimes vfork waitid waitpid wait3 wait4 \
+  tmpnam tmpnam_r truncate ttyname uname unlinkat utimensat utimes vfork \
- wcscoll wcsftime wcsxfrm wmemcmp writev _getpty rtpSpawn)
+  wait wait3 wait4 waitid waitpid wcscoll wcsftime wcsxfrm wmemcmp writev \
+])
 
 # Force lchmod off for Linux. Linux disallows changing the mode of symbolic
 # links. Some libc implementations have a stub lchmod implementation that always

pyconfig.h.in

@@ -362,6 +362,9 @@
 /* Define to 1 if you have the `fork' function. */
 #undef HAVE_FORK
 
+/* Define to 1 if you have the `fork1' function. */
+#undef HAVE_FORK1
+
 /* Define to 1 if you have the `forkpty' function. */
 #undef HAVE_FORKPTY
 
@@ -435,9 +438,18 @@
 /* Define this if you have flockfile(), getc_unlocked(), and funlockfile() */
 #undef HAVE_GETC_UNLOCKED
 
+/* Define to 1 if you have the `getegid' function. */
+#undef HAVE_GETEGID
+
 /* Define to 1 if you have the `getentropy' function. */
 #undef HAVE_GETENTROPY
 
+/* Define to 1 if you have the `geteuid' function. */
+#undef HAVE_GETEUID
+
+/* Define to 1 if you have the `getgid' function. */
+#undef HAVE_GETGID
+
 /* Define to 1 if you have the `getgrgid' function. */
 #undef HAVE_GETGRGID
 
@@ -495,6 +507,9 @@
 /* Define to 1 if you have the `getpid' function. */
 #undef HAVE_GETPID
 
+/* Define to 1 if you have the `getppid' function. */
+#undef HAVE_GETPPID
+
 /* Define to 1 if you have the `getpriority' function. */
 #undef HAVE_GETPRIORITY
 
@@ -528,6 +543,9 @@
 /* Define to 1 if you have the `getspnam' function. */
 #undef HAVE_GETSPNAM
 
+/* Define to 1 if you have the `getuid' function. */
+#undef HAVE_GETUID
+
 /* Define to 1 if you have the `getwd' function. */
 #undef HAVE_GETWD
 
@@ -767,6 +785,9 @@
 /* Define to 1 if you have the `openat' function. */
 #undef HAVE_OPENAT
 
+/* Define to 1 if you have the `opendir' function. */
+#undef HAVE_OPENDIR
+
 /* Define to 1 if you have the `openpty' function. */
 #undef HAVE_OPENPTY
 
@@ -776,6 +797,9 @@
 /* Define to 1 if you have the `pause' function. */
 #undef HAVE_PAUSE
 
+/* Define to 1 if you have the `pipe' function. */
+#undef HAVE_PIPE
+
 /* Define to 1 if you have the `pipe2' function. */
 #undef HAVE_PIPE2
 
@@ -1137,6 +1161,9 @@
 /* Define to 1 if you have the <syslog.h> header file. */
 #undef HAVE_SYSLOG_H
 
+/* Define to 1 if you have the `system' function. */
+#undef HAVE_SYSTEM
+
 /* Define to 1 if you have the <sys/audioio.h> header file. */
 #undef HAVE_SYS_AUDIOIO_H
 
@@ -1296,6 +1323,9 @@
 /* Define to 1 if you have the `truncate' function. */
 #undef HAVE_TRUNCATE
 
+/* Define to 1 if you have the `ttyname' function. */
+#undef HAVE_TTYNAME
+
 /* Define to 1 if you don't have `tm_zone' but do have the external array
    `tzname'. */
 #undef HAVE_TZNAME
@@ -1347,6 +1377,9 @@
 /* Define to 1 if you have the `vfork' function. */
 #undef HAVE_VFORK
 
+/* Define to 1 if you have the `wait' function. */
+#undef HAVE_WAIT
+
 /* Define to 1 if you have the `wait3' function. */
 #undef HAVE_WAIT3