meta: Fix Deprecated warnings from regexs

Fix handling of escape characters in regexs and hence fix python
Deprecation warnings which will be problematic in python 3.8.

Note that some show up as:

"""
meta/classes/package.bbclass:1293: DeprecationWarning: invalid escape sequence \.  

"""

where the problem isn't on 1293 in package.bbclass but in some _prepend to a
package.bbclass function in a different file like mesa.inc, often from
do_package_split() calls.

(From OE-Core rev: 4b1c0c7d5525fc4cea9e0f02ec54e92a6fbc6199)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

3 files changed, 8 insertions, 8 deletions

diff --git a/meta/recipes-multimedia/alsa/alsa-plugins_1.1.6.bb b/meta/recipes-multimedia/alsa/alsa-plugins_1.1.6.bb
index 17c1879f95..7ede8be98a 100644
--- a/meta/recipes-multimedia/alsa/alsa-plugins_1.1.6.bb
+++ b/meta/recipes-multimedia/alsa/alsa-plugins_1.1.6.bb
@@ -60,7 +60,7 @@ do_install_append() {
 
 python populate_packages_prepend() {
     plugindir = d.expand('${libdir}/alsa-lib/')
-    packages = " ".join(do_split_packages(d, plugindir, '^libasound_module_(.*)\.so$', 'libasound-module-%s', 'Alsa plugin for %s', extra_depends=''))
+    packages = " ".join(do_split_packages(d, plugindir, r'^libasound_module_(.*)\.so$', 'libasound-module-%s', 'Alsa plugin for %s', extra_depends=''))
     d.setVar("RDEPENDS_alsa-plugins", packages)
 }
 
diff --git a/meta/recipes-multimedia/gstreamer/gst-plugins-package.inc b/meta/recipes-multimedia/gstreamer/gst-plugins-package.inc
index 3fdb10e404..c995e29e09 100644
--- a/meta/recipes-multimedia/gstreamer/gst-plugins-package.inc
+++ b/meta/recipes-multimedia/gstreamer/gst-plugins-package.inc
@@ -6,11 +6,11 @@ python split_gstreamer10_packages () {
     postinst = d.getVar('plugin_postinst')
     glibdir = d.getVar('libdir')
 
-    do_split_packages(d, glibdir, '^lib(.*)\.so\.*', 'lib%s', 'gstreamer %s library', extra_depends='', allow_links=True)
-    do_split_packages(d, gst_libdir, 'libgst(.*)\.so$', d.expand('${PN}-%s'), 'GStreamer plugin for %s', postinst=postinst, extra_depends='')
-    do_split_packages(d, glibdir+'/girepository-1.0', 'Gst(.*)-1.0\.typelib$', d.expand('${PN}-%s-typelib'), 'GStreamer typelib file for %s', postinst=postinst, extra_depends='')
-    do_split_packages(d, gst_libdir, 'libgst(.*)\.la$', d.expand('${PN}-%s-dev'), 'GStreamer plugin for %s (development files)', extra_depends='${PN}-dev')
-    do_split_packages(d, gst_libdir, 'libgst(.*)\.a$', d.expand('${PN}-%s-staticdev'), 'GStreamer plugin for %s (static development files)', extra_depends='${PN}-staticdev')
+    do_split_packages(d, glibdir, r'^lib(.*)\.so\.*', 'lib%s', 'gstreamer %s library', extra_depends='', allow_links=True)
+    do_split_packages(d, gst_libdir, r'libgst(.*)\.so$', d.expand('${PN}-%s'), 'GStreamer plugin for %s', postinst=postinst, extra_depends='')
+    do_split_packages(d, glibdir+'/girepository-1.0', r'Gst(.*)-1.0\.typelib$', d.expand('${PN}-%s-typelib'), 'GStreamer typelib file for %s', postinst=postinst, extra_depends='')
+    do_split_packages(d, gst_libdir, r'libgst(.*)\.la$', d.expand('${PN}-%s-dev'), 'GStreamer plugin for %s (development files)', extra_depends='${PN}-dev')
+    do_split_packages(d, gst_libdir, r'libgst(.*)\.a$', d.expand('${PN}-%s-staticdev'), 'GStreamer plugin for %s (static development files)', extra_depends='${PN}-staticdev')
 }
 
 python set_metapkg_rdepends () {
diff --git a/meta/recipes-multimedia/pulseaudio/pulseaudio.inc b/meta/recipes-multimedia/pulseaudio/pulseaudio.inc
index 8c58c37248..9a95e7c65b 100644
--- a/meta/recipes-multimedia/pulseaudio/pulseaudio.inc
+++ b/meta/recipes-multimedia/pulseaudio/pulseaudio.inc
@@ -211,8 +211,8 @@ pkg_postinst_${PN}-server() {
 
 python populate_packages_prepend() {
     plugindir = d.expand('${libdir}/pulse-${PV}/modules/')
-    do_split_packages(d, plugindir, '^module-(.*)\.so$', '${PN}-module-%s', 'PulseAudio module for %s', extra_depends='', prepend=True)
-    do_split_packages(d, plugindir, '^lib(.*)\.so$', '${PN}-lib-%s', 'PulseAudio library for %s', extra_depends='', prepend=True)
+    do_split_packages(d, plugindir, r'^module-(.*)\.so$', '${PN}-module-%s', 'PulseAudio module for %s', extra_depends='', prepend=True)
+    do_split_packages(d, plugindir, r'^lib(.*)\.so$', '${PN}-lib-%s', 'PulseAudio library for %s', extra_depends='', prepend=True)
 }
 
 RDEPENDS_pulseaudio-server = " \