Build Scripts for multiple parallel python versions

fix_configure_recognizes_mac_os_12.patch

diff --git a/configure b/configure
index c51f396824b63521034929cf98a37cee40b86254..5024860ca4395aa3a71de307a0e8335ceb2d77da 100755
--- a/configure
+++ b/configure
@@ -3426,7 +3426,7 @@ $as_echo "#define _BSD_SOURCE 1" >>confdefs.h
   # has no effect, don't bother defining them
   Darwin/[6789].*)
     define_xopen_source=no;;
-  Darwin/1[0-9].*)
+  Darwin/[12][0-9].*)
     define_xopen_source=no;;
   # On AIX 4 and 5.1, mbstate_t is defined only when _XOPEN_SOURCE == 500 but
   # used in wcsnrtombs() and mbsnrtowcs() even if _XOPEN_SOURCE is not defined
diff --git a/configure.ac b/configure.ac
index 70deefb6b9aea660350ee3c0a52c5e701037464b..5a3e340aa3e72b5effe0bc3b69690a828122b9dd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -510,7 +510,7 @@ case $ac_sys_system/$ac_sys_release in
   # has no effect, don't bother defining them
   Darwin/@<:@6789@:>@.*)
     define_xopen_source=no;;
-  Darwin/1@<:@0-9@:>@.*)
+  Darwin/@<:@[12]@:>@@<:@0-9@:>@.*)
     define_xopen_source=no;;
   # On AIX 4 and 5.1, mbstate_t is defined only when _XOPEN_SOURCE == 500 but
   # used in wcsnrtombs() and mbsnrtowcs() even if _XOPEN_SOURCE is not defined

fix_finding_readline.patch

diff --git a/setup.py b/setup.py
index bf90600eaa..85c7ecaae6 100644
--- a/setup.py
+++ b/setup.py
@@ -819,7 +819,8 @@ class PyBuildExt(build_ext):
                                libraries=['m']) )
 
         # readline
-        do_readline = self.compiler.find_library_file(lib_dirs, 'readline')
+        # do_readline = self.compiler.find_library_file(lib_dirs, 'readline')
+        do_readline = "/Users/dwt/Library/Homebrew/opt/readline/lib/libhistory.dylib"
         readline_termcap_library = ""
         curses_library = ""
         # Cannot use os.popen here in py3k.

fix_missing_random.patch

diff --git a/Python/random.c b/Python/random.c
index af3d0bd0d5..c8e9d275b0 100644
--- a/Python/random.c
+++ b/Python/random.c
@@ -3,6 +3,9 @@
 #include <windows.h>
 #else
 #include <fcntl.h>
+#if defined(HAVE_GETRANDOM) || defined(HAVE_GETENTROPY)
+#include <sys/random.h>
+#endif
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
 #endif

local_build.sh

#!/bin/sh -e


build_python() {
    local MAJOR_VERSION=$1
    local VERSION=$(latest_python $MAJOR_VERSION)
    local PREFIX=$HOME/Library/Python/SelfBuilt
    local BINDIR=$HOME/bin
    
    git checkout $VERSION
    # Need to apply the patch before calling ./configure as it patches exactly that
    patch_if_neccessary $2
    patch_if_neccessary $3
    
    ./configure --prefix=$PREFIX
    make -j$(sysctl -n hw.ncpu) altinstall
    # install
    ln -fs $PREFIX/bin/python$MAJOR_VERSION $HOME/bin/
    clean
}


die () {
    echo $1
    exit 1
}

add_brew_library() {
    local LIBRARY_NAME=$1
    local PREFIX=$(brew --prefix $LIBRARY_NAME)
    test -d $PREFIX/lib/pkgconfig || die "pkg-config for $LIBRARY_NAME does not exist at $PREFIX/lib/pkgconfig"
    export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$PREFIX/lib/pkgconfig"
    export CPPFLAGS="$CPPFLAGS $(pkg-config $LIBRARY_NAME --cflags)"
    export LDFLAGS="$LDFLAGS $(pkg-config $LIBRARY_NAME --libs)"
}

add_brew_libraries() {
    # As this modifies the environment, need to do this only once
    add_brew_library readline
    add_brew_library openssl
    add_brew_library zlib
    add_brew_library sqlite3
}

patch_if_neccessary() {
    local PATCH=$1
    if [ ! -z "$PATCH" ] ; then
        patch -p1 < $PATCH
    fi
}

clean() {
    make distclean
    # remove any leftovers from patches
    git clean --exclude local_build.sh --exclude local_patches -d --force
    git checkout .
}

latest_python() {
    local MAJOR_VERSION=$1
    echo $(git tag | grep $MAJOR_VERSION | grep -v rc | grep -v a | grep -v b | grep -v c | sort --version-sort | tail -n 1)
}

main() {
    add_brew_libraries
    
    git fetch
    
    # show all released versions:
    # git tag | grep -v rc|grep -v a|grep -v b|grep -v c|sort --version-sort
    
    # build_python 3.4 local_patches/fix_configure_recognizes_mac_os_12.patch local_patches/fix_missing_random.patch
    # build_python 3.5 local_patches/fix_configure_recognizes_mac_os_12.patch
    # build_python 3.6 local_patches/fix_configure_recognizes_mac_os_12.patch
    # these are installed via homebrew
    # build_python 3.7 local_patches/fix_finding_readline.patch
    # build_python 3.8
    # build_python 3.9
    build_python 3.10
}

${1:-main}