libjxl: Add SOVERSION guard

%ci:no-build

packages/libjxl/build.sh

@@ -11,5 +11,21 @@ TERMUX_PKG_DEPENDS="brotli, libc++"
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="-DJPEGXL_FORCE_SYSTEM_BROTLI=True"
 
 termux_step_post_get_source() {
+	# Do not forget to bump revision of reverse dependencies and rebuild them
+	# after RELEASE / SOVERSION is changed.
+	local _SOVERSION=0.7
+
+	for a in MAJOR SO_MINOR; do
+		local _${a}=$(sed -En 's/^set\(JPEGXL_'"${a}"'_VERSION\s+([0-9]+).*/\1/p' \
+				lib/CMakeLists.txt)
+	done
+	local v="${_MAJOR}"
+	if [ "${_SO_MINOR}" != "0" ]; then
+		v+=".${_SO_MINOR}"
+	fi
+	if [ "${_SOVERSION}" != "${v}" ]; then
+		termux_error_exit "SOVERSION guard check failed."
+	fi
+
 	./deps.sh
 }