opencv: Build Python bindings

packages/opencv/build.sh

@@ -2,9 +2,13 @@ TERMUX_PKG_HOMEPAGE=https://opencv.org/
 TERMUX_PKG_DESCRIPTION="Open Source Computer Vision Library"
 TERMUX_PKG_LICENSE="Apache-2.0"
 TERMUX_PKG_MAINTAINER="@termux"
-TERMUX_PKG_VERSION=4.5.5
-TERMUX_PKG_SRCURL=https://github.com/opencv/opencv/archive/${TERMUX_PKG_VERSION}.tar.gz
-TERMUX_PKG_SHA256=a1cfdcf6619387ca9e232687504da996aaa9f7b5689986b8331ec02cb61d28ad
+TERMUX_PKG_VERSION=(4.5.5)
+TERMUX_PKG_VERSION+=(1.22.3) # NumPy version
+TERMUX_PKG_REVISION=1
+TERMUX_PKG_SRCURL=(https://github.com/opencv/opencv/archive/${TERMUX_PKG_VERSION}.tar.gz
+                   https://github.com/numpy/numpy/archive/refs/tags/v${TERMUX_PKG_VERSION[1]}.tar.gz)
+TERMUX_PKG_SHA256=(a1cfdcf6619387ca9e232687504da996aaa9f7b5689986b8331ec02cb61d28ad
+                   c8f3ec591e3f17b939220f2b9eabb4c5e2db330f8af62c0a3aeee8a4d1a6c0db)
 TERMUX_PKG_DEPENDS="libc++, libjpeg-turbo, libpng, libprotobuf, libtiff, libwebp, openjpeg, openjpeg-tools, zlib"
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
 -DANDROID_NO_TERMUX=OFF
@@ -13,6 +17,10 @@ TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
 -DPROTOBUF_UPDATE_FILES=ON
 "
 
+termux_step_post_get_source() {
+	mv numpy-${TERMUX_PKG_VERSION[1]} numpy
+}
+
 termux_step_pre_configure() {
 	termux_setup_protobuf
 
@@ -35,6 +43,27 @@ termux_step_pre_configure() {
 		_NEED_DUMMY_LIBRT_A=true
 		echo '!<arch>' > $_LIBRT_A
 	fi
+
+	# For Python bindings
+	_PYTHON_VERSION=$(. $TERMUX_SCRIPTDIR/packages/python/build.sh; echo $_MAJOR_VERSION)
+	termux_setup_python_crossenv
+	pushd $TERMUX_PYTHON_CROSSENV_SRCDIR
+	_CROSSENV_PREFIX=$TERMUX_PKG_BUILDDIR/python-crossenv-prefix
+	python${_PYTHON_VERSION} -m crossenv \
+		$TERMUX_PREFIX/bin/python${_PYTHON_VERSION} \
+		${_CROSSENV_PREFIX}
+	popd
+	. ${_CROSSENV_PREFIX}/bin/activate
+	LDFLAGS+=" -lpython${_PYTHON_VERSION}"
+	export NPY_DISABLE_SVML=1
+	pushd $TERMUX_PKG_SRCDIR/numpy
+	pip install .
+	popd
+	TERMUX_PKG_EXTRA_CONFIGURE_ARGS+="
+		-DPYTHON_DEFAULT_EXECUTABLE=python
+		-DPYTHON3_INCLUDE_PATH=$TERMUX_PREFIX/include/python${_PYTHON_VERSION}
+		-DPYTHON3_NUMPY_INCLUDE_DIRS=${_CROSSENV_PREFIX}/cross/lib/python${_PYTHON_VERSION}/site-packages/numpy/core/include
+		"
 }
 
 termux_step_post_make_install() {

packages/opencv/opencv-python.subpackage.sh

@@ -0,0 +1,8 @@
+TERMUX_SUBPKG_INCLUDE="lib/python*"
+TERMUX_SUBPKG_DESCRIPTION="Python bindings for OpenCV"
+TERMUX_SUBPKG_DEPENDS="python"
+
+termux_step_create_subpkg_debscripts() {
+	echo "#!$TERMUX_PREFIX/bin/sh" > postinst
+	echo "pip3 install numpy" >> postinst
+}