[3.9] pythongh-120831: Increase the default minimum supported iOS version to 13.0 (python#121250)

Increases the default minimum iOS version to 13.0.

Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>

Author: freakboy3742

Misc/NEWS.d/next/Build/2024-07-02-12-42-25.gh-issue-120831.i3eIjg.rst

@@ -0,0 +1 @@
+The default minimum iOS version was increased to 13.0.

configure

@@ -3130,7 +3130,7 @@ $as_echo "\"$MACHDEP\"" >&6; }
 # On cross-compile builds, configure will look for a host-specific compiler by
 # prepending the user-provided host triple to the required binary name.
 #
-# On iOS, this results in binaries like "arm64-apple-ios12.0-simulator-gcc",
+# On iOS, this results in binaries like "arm64-apple-ios13.0-simulator-gcc",
 # which isn't a binary that exists, and isn't very convenient, as it contains the
 # iOS version. As the default cross-compiler name won't exist, configure falls
 # back to gcc, which *definitely* won't work. We're providing wrapper scripts for
@@ -3552,8 +3552,12 @@ if test "$cross_compiling" = yes; then
 		_host_device=${_host_device:=os}
 
 		# IPHONEOS_DEPLOYMENT_TARGET is the minimum supported iOS version
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking iOS deployment target" >&5
+$as_echo_n "checking iOS deployment target... " >&6; }
 		IPHONEOS_DEPLOYMENT_TARGET=${_host_os:3}
-		IPHONEOS_DEPLOYMENT_TARGET=${IPHONEOS_DEPLOYMENT_TARGET:=12.0}
+		IPHONEOS_DEPLOYMENT_TARGET=${IPHONEOS_DEPLOYMENT_TARGET:=13.0}
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $IPHONEOS_DEPLOYMENT_TARGET" >&5
+$as_echo "$IPHONEOS_DEPLOYMENT_TARGET" >&6; }
 
 		case "$host_cpu" in
 			aarch64)

configure.ac

@@ -229,7 +229,7 @@ AC_MSG_RESULT(["$MACHDEP"])
 # On cross-compile builds, configure will look for a host-specific compiler by
 # prepending the user-provided host triple to the required binary name.
 #
-# On iOS, this results in binaries like "arm64-apple-ios12.0-simulator-gcc",
+# On iOS, this results in binaries like "arm64-apple-ios13.0-simulator-gcc",
 # which isn't a binary that exists, and isn't very convenient, as it contains the
 # iOS version. As the default cross-compiler name won't exist, configure falls
 # back to gcc, which *definitely* won't work. We're providing wrapper scripts for
@@ -631,8 +631,10 @@ if test "$cross_compiling" = yes; then
 		_host_device=${_host_device:=os}
 
 		# IPHONEOS_DEPLOYMENT_TARGET is the minimum supported iOS version
+		AC_MSG_CHECKING([iOS deployment target])
 		IPHONEOS_DEPLOYMENT_TARGET=${_host_os:3}
-		IPHONEOS_DEPLOYMENT_TARGET=${IPHONEOS_DEPLOYMENT_TARGET:=12.0}
+		IPHONEOS_DEPLOYMENT_TARGET=${IPHONEOS_DEPLOYMENT_TARGET:=13.0}
+		AC_MSG_RESULT([$IPHONEOS_DEPLOYMENT_TARGET])
 
 		case "$host_cpu" in
 			aarch64)

iOS/README.rst

@@ -185,7 +185,7 @@ these libraries pre-compiled for iOS can be found in `this repository
 <https://github.com/beeware/cpython-apple-source-deps/releases>`__.
 
 By default, Python will be compiled with an iOS deployment target (i.e., the
-minimum supported iOS version) of 12.0. To specify a different deployment
+minimum supported iOS version) of 13.0. To specify a different deployment
 target, provide the version number as part of the ``--host`` argument - for
 example, ``--host=arm64-apple-ios15.4-simulator`` would compile an ARM64
 simulator build with a deployment target of 15.4.