libzopfli: Add SOVERSION guard

%ci:no-build

packages/libzopfli/build.sh

@@ -12,3 +12,14 @@ TERMUX_PKG_DEPENDS="libc++"
 TERMUX_PKG_BREAKS="libzopfli-dev"
 TERMUX_PKG_REPLACES="libzopfli-dev"
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="-DZOPFLI_BUILD_SHARED=ON"
+
+termux_step_post_get_source() {
+	# Do not forget to bump revision of reverse dependencies and rebuild them
+	# after SOVERSION is changed.
+	local _SOVERSION=1
+
+	local v=$(echo ${TERMUX_PKG_VERSION#*:} | cut -d . -f 1)
+	if [ "${v}" != "${_SOVERSION}" ]; then
+		termux_error_exit "SOVERSION guard check failed."
+	fi
+}