https://github.com/python/cpython/commit/413663b26a48ff0218987b216043d677d7a01397
commit: 413663b26a48ff0218987b216043d677d7a01397
branch: 3.15
author: Miss Islington (bot) <[email protected]>
committer: freakboy3742 <[email protected]>
date: 2026-05-26T04:03:35Z
summary:

[3.15] gh-150443: Exclude explicit dup3 and pipe2 checks on iOS builds. 
(GH-150444) (#150446)

Exclude explicit dup3 and pipe2 checks on iOS builds.
(cherry picked from commit 629da5c914b4407e01c1dc06cbcbd8dce825fef3)

Co-authored-by: Russell Keith-Magee <[email protected]>

files:
M configure
M configure.ac

diff --git a/configure b/configure
index 9ad2171460f7ac..7abc41648b3c45 100755
--- a/configure
+++ b/configure
@@ -20020,12 +20020,6 @@ if test "x$ac_cv_func_dup" = xyes
 then :
   printf "%s\n" "#define HAVE_DUP 1" >>confdefs.h
 
-fi
-ac_fn_c_check_func "$LINENO" "dup3" "ac_cv_func_dup3"
-if test "x$ac_cv_func_dup3" = xyes
-then :
-  printf "%s\n" "#define HAVE_DUP3 1" >>confdefs.h
-
 fi
 ac_fn_c_check_func "$LINENO" "execv" "ac_cv_func_execv"
 if test "x$ac_cv_func_execv" = xyes
@@ -20500,12 +20494,6 @@ if test "x$ac_cv_func_pipe" = xyes
 then :
   printf "%s\n" "#define HAVE_PIPE 1" >>confdefs.h
 
-fi
-ac_fn_c_check_func "$LINENO" "pipe2" "ac_cv_func_pipe2"
-if test "x$ac_cv_func_pipe2" = xyes
-then :
-  printf "%s\n" "#define HAVE_PIPE2 1" >>confdefs.h
-
 fi
 ac_fn_c_check_func "$LINENO" "plock" "ac_cv_func_plock"
 if test "x$ac_cv_func_plock" = xyes
@@ -21173,7 +21161,13 @@ fi
 # header definition prevents usage - autoconf doesn't use the headers), or
 # raise an error if used at runtime. Force these symbols off.
 if test "$ac_sys_system" != "iOS" ; then
-  ac_fn_c_check_func "$LINENO" "getentropy" "ac_cv_func_getentropy"
+  ac_fn_c_check_func "$LINENO" "dup3" "ac_cv_func_dup3"
+if test "x$ac_cv_func_dup3" = xyes
+then :
+  printf "%s\n" "#define HAVE_DUP3 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getentropy" "ac_cv_func_getentropy"
 if test "x$ac_cv_func_getentropy" = xyes
 then :
   printf "%s\n" "#define HAVE_GETENTROPY 1" >>confdefs.h
@@ -21184,6 +21178,12 @@ if test "x$ac_cv_func_getgroups" = xyes
 then :
   printf "%s\n" "#define HAVE_GETGROUPS 1" >>confdefs.h
 
+fi
+ac_fn_c_check_func "$LINENO" "pipe2" "ac_cv_func_pipe2"
+if test "x$ac_cv_func_pipe2" = xyes
+then :
+  printf "%s\n" "#define HAVE_PIPE2 1" >>confdefs.h
+
 fi
 ac_fn_c_check_func "$LINENO" "system" "ac_cv_func_system"
 if test "x$ac_cv_func_system" = xyes
diff --git a/configure.ac b/configure.ac
index a51e173e5293f2..47a6e59623b830 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5469,7 +5469,7 @@ fi
 AC_CHECK_FUNCS([ \
   accept4 alarm bind_textdomain_codeset chmod chown clearenv \
   clock closefrom close_range confstr \
-  copy_file_range ctermid dladdr dup dup3 execv explicit_bzero explicit_memset 
\
+  copy_file_range ctermid dladdr dup execv explicit_bzero explicit_memset \
   faccessat fchmod fchmodat fchown fchownat fdopendir fdwalk fexecve \
   fork fork1 fpathconf fstatat ftime ftruncate futimens futimes futimesat \
   gai_strerror getegid geteuid getgid getgrent getgrgid getgrgid_r \
@@ -5479,7 +5479,7 @@ AC_CHECK_FUNCS([ \
   getspnam getuid getwd grantpt if_nameindex initgroups kill killpg lchown 
linkat \
   lockf lstat lutimes madvise mbrtowc memrchr mkdirat mkfifo mkfifoat \
   mknod mknodat mktime mmap mremap nice openat opendir pathconf pause pipe \
-  pipe2 plock poll ppoll posix_fadvise posix_fallocate posix_openpt 
posix_spawn posix_spawnp \
+  plock poll ppoll posix_fadvise posix_fallocate posix_openpt posix_spawn 
posix_spawnp \
   posix_spawn_file_actions_addclosefrom_np \
   pread preadv preadv2 process_vm_readv \
   pthread_cond_timedwait_relative_np pthread_condattr_setclock pthread_init \
@@ -5516,7 +5516,7 @@ fi
 # header definition prevents usage - autoconf doesn't use the headers), or
 # raise an error if used at runtime. Force these symbols off.
 if test "$ac_sys_system" != "iOS" ; then
-  AC_CHECK_FUNCS([getentropy getgroups system])
+  AC_CHECK_FUNCS([dup3 getentropy getgroups pipe2 system])
 fi
 
 AC_CHECK_DECL([dirfd],

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