Start the Py3.12 branch.

Author: freakboy3742

Makefile

@@ -39,7 +39,7 @@ BUILD_NUMBER=custom
 # PYTHON_VERSION is the full version number (e.g., 3.10.0b3)
 # PYTHON_MICRO_VERSION is the full version number, without any alpha/beta/rc suffix. (e.g., 3.10.0)
 # PYTHON_VER is the major/minor version (e.g., 3.10)
-PYTHON_VERSION=3.11.5
+PYTHON_VERSION=3.12.0rc3
 PYTHON_MICRO_VERSION=$(shell echo $(PYTHON_VERSION) | grep -Eo "\d+\.\d+\.\d+")
 PYTHON_VER=$(basename $(PYTHON_VERSION))
 
@@ -587,9 +587,8 @@ $$(PYTHON_SRCDIR-$(target))/Makefile: \
 			LIBLZMA_LIBS="-L$$(XZ_MERGE-$$(SDK-$(target)))/lib -llzma" \
 			BZIP2_CFLAGS="-I$$(BZIP2_MERGE-$$(SDK-$(target)))/include" \
 			BZIP2_LIBS="-L$$(BZIP2_MERGE-$$(SDK-$(target)))/lib -lbz2" \
-			LIBFFI_INCLUDEDIR="$$(LIBFFI_MERGE-$$(SDK-$(target)))/include" \
-			LIBFFI_LIBDIR="$$(LIBFFI_MERGE-$$(SDK-$(target)))/lib" \
-			LIBFFI_LIB="ffi" \
+			LIBFFI_CFLAGS="-I$$(LIBFFI_MERGE-$$(SDK-$(target)))/include" \
+			LIBFFI_LIBS="-L$$(LIBFFI_MERGE-$$(SDK-$(target)))/lib -lffi" \
 			--host=$$(TARGET_TRIPLE-$(target)) \
 			--build=$(HOST_ARCH)-apple-darwin \
 			--with-build-python=$$(PYTHON_INSTALL-macosx)/bin/python$(PYTHON_VER) \

README.rst

@@ -4,13 +4,14 @@ Python Apple Support
 This is a meta-package for building a version of Python that can be embedded
 into a macOS, iOS, tvOS or watchOS project.
 
-**This branch builds a packaged version of Python 3.11.5**.
+**This branch builds a packaged version of Python 3.12.0rc3**.
 Other Python versions are available by cloning other branches of the main
 repository:
 
 * `Python 3.8 <https://github.com/beeware/Python-Apple-support/tree/3.8>`__
 * `Python 3.9 <https://github.com/beeware/Python-Apple-support/tree/3.9>`__
 * `Python 3.10 <https://github.com/beeware/Python-Apple-support/tree/3.10>`__
+* `Python 3.11 <https://github.com/beeware/Python-Apple-support/tree/3.11>`__
 
 It works by downloading, patching, and building a fat binary of Python and selected
 pre-requisites, and packaging them as static libraries that can be incorporated into an