python&python2: Fix PATH handling

After changes to build-package.sh the PATH setup in python&python2
caused the toolchain strip not to be found, causing broken binaries
due to non-stripped elf symbol versioning.

Fixes #460.

packages/python/build.sh

@@ -9,7 +9,7 @@ TERMUX_PKG_HOSTBUILD=true
 
 _MAJOR_VERSION=3.5
 TERMUX_PKG_VERSION=${_MAJOR_VERSION}.2
-TERMUX_PKG_BUILD_REVISION=2
+TERMUX_PKG_BUILD_REVISION=3
 TERMUX_PKG_SRCURL=http://www.python.org/ftp/python/${TERMUX_PKG_VERSION}/Python-${TERMUX_PKG_VERSION}.tar.xz
 
 # The flag --with(out)-pymalloc (disable/enable specialized mallocs) is enabled by default and causes m suffix versions of python.
@@ -29,12 +29,6 @@ TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" ac_cv_func_linkat=no"
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" ac_cv_posix_semaphores_enabled=no"
 TERMUX_PKG_RM_AFTER_INSTALL="lib/python${_MAJOR_VERSION}/test lib/python${_MAJOR_VERSION}/tkinter lib/python${_MAJOR_VERSION}/turtledemo lib/python${_MAJOR_VERSION}/idlelib bin/python${_MAJOR_VERSION}m bin/idle*"
 
-# Python does not use CPPFLAGS when building modules, so add this to CFLAGS as well (needed when building _cursesmodule):
-# export CFLAGS="$CFLAGS -isystem $TERMUX_PREFIX/include/libandroid-support"
-
-# NOTE: termux_step_host_build may not be called if host build is cached.
-export TERMUX_ORIG_PATH=$PATH
-export PATH=$TERMUX_PKG_HOSTBUILD_DIR:$PATH
 termux_step_host_build () {
 	# We need a host-built Parser/pgen binary, copied into cross-compile build in termux_step_post_configure() below
 	$TERMUX_PKG_SRCDIR/configure
@@ -45,6 +39,12 @@ termux_step_host_build () {
         ln -s python python$_MAJOR_VERSION
 }
 
+termux_step_pre_configure() {
+	# Put the host-built python in path:
+	export TERMUX_ORIG_PATH=$PATH
+	export PATH=$TERMUX_PKG_HOSTBUILD_DIR:$PATH
+}
+
 termux_step_post_configure () {
 	cp $TERMUX_PKG_HOSTBUILD_DIR/Parser/pgen $TERMUX_PKG_BUILDDIR/Parser/pgen
 	cp $TERMUX_PKG_HOSTBUILD_DIR/Programs/_freeze_importlib $TERMUX_PKG_BUILDDIR/Programs/_freeze_importlib

packages/python2/build.sh

@@ -28,9 +28,6 @@ TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" --enable-unicode=ucs4"
 # Let 2to3 be in the python3 package:
 TERMUX_PKG_RM_AFTER_INSTALL="bin/2to3"
 
-# NOTE: termux_step_host_build may not be called if host build is cached.
-export TERMUX_ORIG_PATH=$PATH
-export PATH=$TERMUX_PKG_HOSTBUILD_DIR:$PATH
 termux_step_host_build () {
 	# We need a host-built Parser/pgen binary, copied into cross-compile build in termux_step_post_configure() below
 	$TERMUX_PKG_SRCDIR/configure
@@ -46,6 +43,12 @@ termux_step_post_configure () {
 	$TERMUX_TOUCH -d "next hour" $TERMUX_PKG_BUILDDIR/Parser/pgen
 }
 
+termux_step_pre_configure() {
+	# Put the host-built python in path:
+	export TERMUX_ORIG_PATH=$PATH
+	export PATH=$TERMUX_PKG_HOSTBUILD_DIR:$PATH
+}
+
 termux_step_post_make_install () {
 	# Avoid file clashes with the python (3) package:
 	mv $TERMUX_PREFIX/share/man/man1/{python.1,python2.1}