openbabel: fix cross compilation with wxWidgets / broken for ARM

srcpkgs/openbabel/template

@@ -14,6 +14,19 @@ homepage="http://openbabel.org"
 distfiles="https://github.com/openbabel/openbabel/archive/openbabel-${_ver}.tar.gz"
 checksum=b210cc952ce1ecab6efaf76708d3bd179c9b0f0d73fe8bd1e0c934df7391a82a
 
+case $XBPS_TARGET_MACHINE in
+	arm*|aarch64*) broken="error: narrowing conversion of '-16' from 'int' to 'char' inside { }";;
+esac
+
+if [ -n "${CROSS_BUILD}" ]; then
+	hostmakedepends+=" python"
+
+	pre_configure() {
+		# cmake doesn’t find/use the wx-config wrapper
+		sed -i -e "1i\set(wxWidgets_CONFIG_OPTIONS --prefix=${XBPS_CROSS_BASE}/usr)" CMakeLists.txt
+	}
+fi
+
 openbabel-devel_package() {
 	depends="${sourcepkg}>=${version}_${revision}"
 	short_desc+=" - development files"