[meta-oe] Fix DeprecationWarning about regexps

diff --git a/meta-multimedia/recipes-connectivity/rygel/rygel_0.38.3.bb b/meta-multimedia/recipes-connectivity/rygel/rygel_0.38.3.bb
index c08ab11b24..9633cab530 100644
--- a/meta-multimedia/recipes-connectivity/rygel/rygel_0.38.3.bb
+++ b/meta-multimedia/recipes-connectivity/rygel/rygel_0.38.3.bb
@@ -64,8 +64,8 @@  python populate_packages:prepend () {
     postinst = d.getVar('plugin_postinst')
     pkgs = []
 
-    pkgs += do_split_packages(d, oe.path.join(rygel_libdir, "plugins"), 'librygel-(.*)\.so$', d.expand('${PN}-plugin-%s'), 'Rygel plugin for %s', postinst=postinst, extra_depends=d.expand('${PN}'))
-    pkgs += do_split_packages(d, oe.path.join(rygel_libdir, "plugins"), '(.*)\.plugin$', d.expand('${PN}-plugin-%s'), 'Rygel plugin for %s', postinst=postinst, extra_depends=d.expand('${PN}'))
+    pkgs += do_split_packages(d, oe.path.join(rygel_libdir, "plugins"), r'librygel-(.*)\.so$', d.expand('${PN}-plugin-%s'), 'Rygel plugin for %s', postinst=postinst, extra_depends=d.expand('${PN}'))
+    pkgs += do_split_packages(d, oe.path.join(rygel_libdir, "plugins"), r'(.*)\.plugin$', d.expand('${PN}-plugin-%s'), 'Rygel plugin for %s', postinst=postinst, extra_depends=d.expand('${PN}'))
 
     metapkg = d.getVar('PN') + '-meta'
     d.setVar('RDEPENDS:' + metapkg, ' '.join(pkgs))
diff --git a/meta-multimedia/recipes-multimedia/dvb-apps/dvb-apps_1.1.1.bb b/meta-multimedia/recipes-multimedia/dvb-apps/dvb-apps_1.1.1.bb
index adaa552ed8..3cf0ca4eb8 100644
--- a/meta-multimedia/recipes-multimedia/dvb-apps/dvb-apps_1.1.1.bb
+++ b/meta-multimedia/recipes-multimedia/dvb-apps/dvb-apps_1.1.1.bb
@@ -91,10 +91,10 @@  FILES:dvb-zap-data = "${docdir}/dvb-apps/szap"
 
 python populate_packages:prepend () {
     dvb_libdir = bb.data.expand('${libdir}', d)
-    do_split_packages(d, dvb_libdir, '^lib(.*)\.so$', 'lib%s', 'DVB %s package', extra_depends='', allow_links=True)
-    do_split_packages(d, dvb_libdir, '^lib(.*)\.la$', 'lib%s-dev', 'DVB %s development package', extra_depends='${PN}-dev')
-    do_split_packages(d, dvb_libdir, '^lib(.*)\.a$', 'lib%s-dev', 'DVB %s development package', extra_depends='${PN}-dev')
-    do_split_packages(d, dvb_libdir, '^lib(.*)\.so\.*', 'lib%s', 'DVB %s library', extra_depends='', allow_links=True)
+    do_split_packages(d, dvb_libdir, r'^lib(.*)\.so$', 'lib%s', 'DVB %s package', extra_depends='', allow_links=True)
+    do_split_packages(d, dvb_libdir, r'^lib(.*)\.la$', 'lib%s-dev', 'DVB %s development package', extra_depends='${PN}-dev')
+    do_split_packages(d, dvb_libdir, r'^lib(.*)\.a$', 'lib%s-dev', 'DVB %s development package', extra_depends='${PN}-dev')
+    do_split_packages(d, dvb_libdir, r'^lib(.*)\.so\.*', 'lib%s', 'DVB %s library', extra_depends='', allow_links=True)
 }
 
 INSANE_SKIP:${PN} = "ldflags"
diff --git a/meta-multimedia/recipes-multimedia/libao/libao_1.2.0.bb b/meta-multimedia/recipes-multimedia/libao/libao_1.2.0.bb
index dc09d9413a..e6a9b7d250 100644
--- a/meta-multimedia/recipes-multimedia/libao/libao_1.2.0.bb
+++ b/meta-multimedia/recipes-multimedia/libao/libao_1.2.0.bb
@@ -23,8 +23,8 @@  do_install:append () {
 python populate_packages:prepend () {
     rootdir = bb.data.expand('${libdir}/ao/plugins-4', d)
     rootdir_dbg = bb.data.expand('${libdir}/ao/plugins-4/.debug', d)
-    do_split_packages(d, rootdir, '^(.*)\.so$', output_pattern='${BPN}-plugin-%s', description='AO %s plugin')
-    do_split_packages(d, rootdir_dbg, '^(.*)\.so$', output_pattern='${BPN}-plugin-%s-dbg', description='AO %s plugin debug data')
+    do_split_packages(d, rootdir, r'^(.*)\.so$', output_pattern='${BPN}-plugin-%s', description='AO %s plugin')
+    do_split_packages(d, rootdir_dbg, r'^(.*)\.so$', output_pattern='${BPN}-plugin-%s-dbg', description='AO %s plugin debug data')
 }
 
 PACKAGECONFIG ?= "${@bb.utils.filter('DISTRO_FEATURES', 'alsa pulseaudio', d)}"
diff --git a/meta-networking/recipes-connectivity/samba/samba_4.14.12.bb b/meta-networking/recipes-connectivity/samba/samba_4.14.12.bb
index 5be4d2d51e..099d99c824 100644
--- a/meta-networking/recipes-connectivity/samba/samba_4.14.12.bb
+++ b/meta-networking/recipes-connectivity/samba/samba_4.14.12.bb
@@ -224,16 +224,16 @@  python samba_populate_packages() {
     mlprefix = d.getVar('MLPREFIX') or ''
     pam_libdir = d.expand('${base_libdir}/security')
     pam_pkgname = mlprefix + 'pam-plugin%s'
-    do_split_packages(d, pam_libdir, '^pam_(.*)\.so$', pam_pkgname, 'PAM plugin for %s', extra_depends='', prepend=True)
+    do_split_packages(d, pam_libdir, r'^pam_(.*)\.so$', pam_pkgname, 'PAM plugin for %s', extra_depends='', prepend=True)
 
     libdir = d.getVar('libdir')
-    do_split_packages(d, libdir, '^lib(.*)\.so\..*$', 'lib%s', 'Samba %s library', extra_depends='${PN}-common', prepend=True, allow_links=True)
+    do_split_packages(d, libdir, r'^lib(.*)\.so\..*$', 'lib%s', 'Samba %s library', extra_depends='${PN}-common', prepend=True, allow_links=True)
     pkglibdir = '%s/samba' % libdir
-    do_split_packages(d, pkglibdir, '^lib(.*)\.so$', 'lib%s', 'Samba %s library', extra_depends='${PN}-common', prepend=True)
+    do_split_packages(d, pkglibdir, r'^lib(.*)\.so$', 'lib%s', 'Samba %s library', extra_depends='${PN}-common', prepend=True)
     moduledir = '%s/samba/auth' % libdir
-    do_split_packages(d, moduledir, '^(.*)\.so$', 'samba-auth-%s', 'Samba %s authentication backend', hook=module_hook, extra_depends='', prepend=True)
+    do_split_packages(d, moduledir, r'^(.*)\.so$', 'samba-auth-%s', 'Samba %s authentication backend', hook=module_hook, extra_depends='', prepend=True)
     moduledir = '%s/samba/pdb' % libdir
-    do_split_packages(d, moduledir, '^(.*)\.so$', 'samba-pdb-%s', 'Samba %s password backend', hook=module_hook, extra_depends='', prepend=True)
+    do_split_packages(d, moduledir, r'^(.*)\.so$', 'samba-pdb-%s', 'Samba %s password backend', hook=module_hook, extra_depends='', prepend=True)
 }
 
 PACKAGESPLITFUNCS:prepend = "samba_populate_packages "
diff --git a/meta-networking/recipes-support/strongswan/strongswan_5.9.4.bb b/meta-networking/recipes-support/strongswan/strongswan_5.9.4.bb
index 2b7a7a2410..686cdb677e 100644
--- a/meta-networking/recipes-support/strongswan/strongswan_5.9.4.bb
+++ b/meta-networking/recipes-support/strongswan/strongswan_5.9.4.bb
@@ -122,12 +122,12 @@  python split_strongswan_plugins () {
         else:
             d.setVar('CONFFILES:' + pkg, oldfiles + " " + newfile)
 
-    split_packages = do_split_packages(d, libdir, 'libstrongswan-(.*)\.so', '${PN}-plugin-%s', 'strongSwan %s plugin', prepend=True)
-    do_split_packages(d, sysconfdir, '(.*)\.conf', '${PN}-plugin-%s', 'strongSwan %s plugin', prepend=True, hook=add_plugin_conf)
+    split_packages = do_split_packages(d, libdir, r'libstrongswan-(.*)\.so', '${PN}-plugin-%s', 'strongSwan %s plugin', prepend=True)
+    do_split_packages(d, sysconfdir, r'(.*)\.conf', '${PN}-plugin-%s', 'strongSwan %s plugin', prepend=True, hook=add_plugin_conf)
 
-    split_dbg_packages = do_split_packages(d, dbglibdir, 'libstrongswan-(.*)\.so', '${PN}-plugin-%s-dbg', 'strongSwan %s plugin - Debugging files', prepend=True, extra_depends='${PN}-dbg')
-    split_dev_packages = do_split_packages(d, libdir, 'libstrongswan-(.*)\.la', '${PN}-plugin-%s-dev', 'strongSwan %s plugin - Development files', prepend=True, extra_depends='${PN}-dev')
-    split_staticdev_packages = do_split_packages(d, libdir, 'libstrongswan-(.*)\.a', '${PN}-plugin-%s-staticdev', 'strongSwan %s plugin - Development files (Static Libraries)', prepend=True, extra_depends='${PN}-staticdev')
+    split_dbg_packages = do_split_packages(d, dbglibdir, r'libstrongswan-(.*)\.so', '${PN}-plugin-%s-dbg', 'strongSwan %s plugin - Debugging files', prepend=True, extra_depends='${PN}-dbg')
+    split_dev_packages = do_split_packages(d, libdir, r'libstrongswan-(.*)\.la', '${PN}-plugin-%s-dev', 'strongSwan %s plugin - Development files', prepend=True, extra_depends='${PN}-dev')
+    split_staticdev_packages = do_split_packages(d, libdir, r'libstrongswan-(.*)\.a', '${PN}-plugin-%s-staticdev', 'strongSwan %s plugin - Development files (Static Libraries)', prepend=True, extra_depends='${PN}-staticdev')
 
     if split_packages:
         pn = d.getVar('PN')
diff --git a/meta-oe/dynamic-layers/meta-python/recipes-extended/lcdproc/lcdproc_git.bb b/meta-oe/dynamic-layers/meta-python/recipes-extended/lcdproc/lcdproc_git.bb
index 5257ee3477..46ca77f208 100644
--- a/meta-oe/dynamic-layers/meta-python/recipes-extended/lcdproc/lcdproc_git.bb
+++ b/meta-oe/dynamic-layers/meta-python/recipes-extended/lcdproc/lcdproc_git.bb
@@ -100,7 +100,7 @@  INITSCRIPT_PARAMS:lcdproc = "defaults 71 20"
 
 python populate_packages:prepend() {
     plugindir = d.expand('${libdir}/lcdproc')
-    do_split_packages(d, plugindir, '(.*)\.so$', 'lcdd-driver-%s', 'LCDd driver for %s', prepend=True)
+    do_split_packages(d, plugindir, r'(.*)\.so$', 'lcdd-driver-%s', 'LCDd driver for %s', prepend=True)
 }
 
 PACKAGES_DYNAMIC += "^lcdd-driver-.*"
diff --git a/meta-oe/recipes-graphics/tesseract/tesseract-lang_4.1.0.bb b/meta-oe/recipes-graphics/tesseract/tesseract-lang_4.1.0.bb
index 3a3068f73a..2f7fcac784 100644
--- a/meta-oe/recipes-graphics/tesseract/tesseract-lang_4.1.0.bb
+++ b/meta-oe/recipes-graphics/tesseract/tesseract-lang_4.1.0.bb
@@ -17,7 +17,7 @@  do_install() {
 
 python populate_packages:prepend () {
     tessdata_dir= d.expand('${datadir}/tessdata')
-    pkgs = do_split_packages(d, tessdata_dir, '^([a-z_]*)\.*', '${BPN}-%s', 'tesseract-ocr language files for %s', extra_depends='')
+    pkgs = do_split_packages(d, tessdata_dir, r'^([a-z_]*)\.*', '${BPN}-%s', 'tesseract-ocr language files for %s', extra_depends='')
     pn = d.getVar('PN')
     d.appendVar('RDEPENDS:' + pn, ' '+' '.join(pkgs))
 }
diff --git a/meta-oe/recipes-graphics/ttf-fonts/ttf-mplus_027.bb b/meta-oe/recipes-graphics/ttf-fonts/ttf-mplus_027.bb
index 31e710a95e..d8236ce434 100644
--- a/meta-oe/recipes-graphics/ttf-fonts/ttf-mplus_027.bb
+++ b/meta-oe/recipes-graphics/ttf-fonts/ttf-mplus_027.bb
@@ -15,7 +15,7 @@  PACKAGESPLITFUNCS:prepend = "split_ttf_mplus_packages "
 
 python split_ttf_mplus_packages() {
     plugindir = d.expand('${datadir}/fonts/ttf-mplus/')
-    packages = do_split_packages(d, plugindir, '^(.*)\.ttf$', 'ttf-%s', 'TTF Font %s')
+    packages = do_split_packages(d, plugindir, r'^(.*)\.ttf$', 'ttf-%s', 'TTF Font %s')
     d.setVar('FONT_PACKAGES', ' '.join(packages))
 }
 
diff --git a/meta-oe/recipes-multimedia/libcdio/libcdio-paranoia_10.2+2.0.1.bb b/meta-oe/recipes-multimedia/libcdio/libcdio-paranoia_10.2+2.0.1.bb
index 441defea43..3ca91f64a3 100644
--- a/meta-oe/recipes-multimedia/libcdio/libcdio-paranoia_10.2+2.0.1.bb
+++ b/meta-oe/recipes-multimedia/libcdio/libcdio-paranoia_10.2+2.0.1.bb
@@ -18,7 +18,7 @@  FILES:${PN}-utils = "${bindir}/*"
 
 python libcdio_split_packages() {
     libdir = d.expand('${libdir}')
-    do_split_packages(d, libdir, '^lib(.*)\.so\..*', 'lib%s', 'libcdio %s library', extra_depends='', allow_links=True)
+    do_split_packages(d, libdir, r'^lib(.*)\.so\..*', 'lib%s', 'libcdio %s library', extra_depends='', allow_links=True)
 }
 
 PACKAGESPLITFUNCS =+ "libcdio_split_packages"
diff --git a/meta-oe/recipes-multimedia/libcdio/libcdio_2.1.0.bb b/meta-oe/recipes-multimedia/libcdio/libcdio_2.1.0.bb
index 2becafb2a4..170a555b9e 100644
--- a/meta-oe/recipes-multimedia/libcdio/libcdio_2.1.0.bb
+++ b/meta-oe/recipes-multimedia/libcdio/libcdio_2.1.0.bb
@@ -25,7 +25,7 @@  FILES:${PN}-utils = "${bindir}/*"
 
 python libcdio_split_packages() {
     libdir = d.expand('${libdir}')
-    do_split_packages(d, libdir, '^lib(.*)\.so\..*', 'lib%s', 'libcdio %s library', extra_depends='', allow_links=True)
+    do_split_packages(d, libdir, r'^lib(.*)\.so\..*', 'lib%s', 'libcdio %s library', extra_depends='', allow_links=True)
 }
 
 PACKAGESPLITFUNCS =+ "libcdio_split_packages"
diff --git a/meta-oe/recipes-support/freerdp/freerdp_2.5.0.bb b/meta-oe/recipes-support/freerdp/freerdp_2.5.0.bb
index 3dbc87686a..a272cb0991 100644
--- a/meta-oe/recipes-support/freerdp/freerdp_2.5.0.bb
+++ b/meta-oe/recipes-support/freerdp/freerdp_2.5.0.bb
@@ -63,22 +63,22 @@  do_install:append () {
 python populate_packages:prepend () {
     freerdp_root = d.expand('${libdir}/freerdp')
 
-    do_split_packages(d, freerdp_root, '^(audin_.*)\.so$',
+    do_split_packages(d, freerdp_root, r'^(audin_.*)\.so$',
         output_pattern='libfreerdp-plugin-%s',
         description='FreeRDP plugin %s',
         prepend=True, extra_depends='libfreerdp-plugin-audin')
 
-    do_split_packages(d, freerdp_root, '^(rdpsnd_.*)\.so$',
+    do_split_packages(d, freerdp_root, r'^(rdpsnd_.*)\.so$',
         output_pattern='libfreerdp-plugin-%s',
         description='FreeRDP plugin %s',
         prepend=True, extra_depends='libfreerdp-plugin-rdpsnd')
 
-    do_split_packages(d, freerdp_root, '^(tsmf_.*)\.so$',
+    do_split_packages(d, freerdp_root, r'^(tsmf_.*)\.so$',
         output_pattern='libfreerdp-plugin-%s',
         description='FreeRDP plugin %s',
         prepend=True, extra_depends='libfreerdp-plugin-tsmf')
 
-    do_split_packages(d, freerdp_root, '^([^-]*)\.so$',
+    do_split_packages(d, freerdp_root, r'^([^-]*)\.so$',
         output_pattern='libfreerdp-plugin-%s',
         description='FreeRDP plugin %s',
         prepend=True, extra_depends='')
diff --git a/meta-oe/recipes-support/libcanberra/libcanberra_0.30.bb b/meta-oe/recipes-support/libcanberra/libcanberra_0.30.bb
index 0b85862bb5..37e2376b16 100644
--- a/meta-oe/recipes-support/libcanberra/libcanberra_0.30.bb
+++ b/meta-oe/recipes-support/libcanberra/libcanberra_0.30.bb
@@ -34,8 +34,8 @@  PACKAGECONFIG[gtk3] = "--enable-gtk3, --disable-gtk3, gtk+3"
 
 python populate_packages:prepend() {
     plugindir = d.expand('${libdir}/${BPN}-${PV}/')
-    do_split_packages(d, plugindir, '^libcanberra-(.*)\.so$', 'libcanberra-%s', '%s support library', extra_depends='' )
-    do_split_packages(d, plugindir, '^libcanberra-(.*)\.la$', 'libcanberra-%s', '%s support library', extra_depends='' )
+    do_split_packages(d, plugindir, r'^libcanberra-(.*)\.so$', 'libcanberra-%s', '%s support library', extra_depends='' )
+    do_split_packages(d, plugindir, r'^libcanberra-(.*)\.la$', 'libcanberra-%s', '%s support library', extra_depends='' )
 }
 
 PACKAGES =+ "${PN}-gnome ${PN}-gtk2 ${PN}-gtk3 ${PN}-systemd"
diff --git a/meta-oe/recipes-support/opencv/opencv_4.5.5.bb b/meta-oe/recipes-support/opencv/opencv_4.5.5.bb
index a3affa701d..4449596dae 100644
--- a/meta-oe/recipes-support/opencv/opencv_4.5.5.bb
+++ b/meta-oe/recipes-support/opencv/opencv_4.5.5.bb
@@ -162,10 +162,10 @@  PACKAGES += "${@bb.utils.contains('PACKAGECONFIG', 'samples', '${PN}-samples', '
 
 python populate_packages:prepend () {
     cv_libdir = d.expand('${libdir}')
-    do_split_packages(d, cv_libdir, '^lib(.*)\.so$', 'lib%s-dev', 'OpenCV %s development package', extra_depends='${PN}-dev', allow_links=True)
-    do_split_packages(d, cv_libdir, '^lib(.*)\.la$', 'lib%s-dev', 'OpenCV %s development package', extra_depends='${PN}-dev')
-    do_split_packages(d, cv_libdir, '^lib(.*)\.a$', 'lib%s-dev', 'OpenCV %s development package', extra_depends='${PN}-dev')
-    do_split_packages(d, cv_libdir, '^lib(.*)\.so\.*', 'lib%s', 'OpenCV %s library', extra_depends='', allow_links=True)
+    do_split_packages(d, cv_libdir, r'^lib(.*)\.so$', 'lib%s-dev', 'OpenCV %s development package', extra_depends='${PN}-dev', allow_links=True)
+    do_split_packages(d, cv_libdir, r'^lib(.*)\.la$', 'lib%s-dev', 'OpenCV %s development package', extra_depends='${PN}-dev')
+    do_split_packages(d, cv_libdir, r'^lib(.*)\.a$', 'lib%s-dev', 'OpenCV %s development package', extra_depends='${PN}-dev')
+    do_split_packages(d, cv_libdir, r'^lib(.*)\.so\.*', 'lib%s', 'OpenCV %s library', extra_depends='', allow_links=True)
 
     pn = d.getVar('PN')
     metapkg =  pn + '-dev'
diff --git a/meta-oe/recipes-support/openldap/openldap_2.5.9.bb b/meta-oe/recipes-support/openldap/openldap_2.5.9.bb
index b80bde8490..e5e9e5a6de 100644
--- a/meta-oe/recipes-support/openldap/openldap_2.5.9.bb
+++ b/meta-oe/recipes-support/openldap/openldap_2.5.9.bb
@@ -219,8 +219,8 @@  INSANE_SKIP:${PN}-backend-passwd     += "dev-so"
 
 python populate_packages:prepend () {
     backend_dir    = d.expand('${libexecdir}/openldap')
-    do_split_packages(d, backend_dir, 'back_([a-z]*)\.so$', 'openldap-backend-%s', 'OpenLDAP %s backend', prepend=True, extra_depends='', allow_links=True)
-    do_split_packages(d, backend_dir, 'back_([a-z]*)\-.*\.so\..*$', 'openldap-backend-%s', 'OpenLDAP %s backend', extra_depends='', allow_links=True)
+    do_split_packages(d, backend_dir, r'back_([a-z]*)\.so$', 'openldap-backend-%s', 'OpenLDAP %s backend', prepend=True, extra_depends='', allow_links=True)
+    do_split_packages(d, backend_dir, r'back_([a-z]*)\-.*\.so\..*$', 'openldap-backend-%s', 'OpenLDAP %s backend', extra_depends='', allow_links=True)
 
     metapkg = "${PN}-backends"
     d.setVar('ALLOW_EMPTY:' + metapkg, "1")
diff --git a/meta-oe/recipes-support/pidgin/pidgin_2.14.2.bb b/meta-oe/recipes-support/pidgin/pidgin_2.14.2.bb
index b2e6d9ac10..17a2adfc14 100644
--- a/meta-oe/recipes-support/pidgin/pidgin_2.14.2.bb
+++ b/meta-oe/recipes-support/pidgin/pidgin_2.14.2.bb
@@ -83,27 +83,27 @@  python populate_packages:prepend () {
     purple   = d.expand('${libdir}/purple-2')
     finch    = d.expand('${libdir}/finch')
 
-    do_split_packages(d, pidgroot, '^([^l][^i][^b].*)\.so$',
+    do_split_packages(d, pidgroot, r'^([^l][^i][^b].*)\.so$',
         output_pattern='pidgin-plugin-%s',
         description='Pidgin plugin %s',
         prepend=True, extra_depends='')
 
-    do_split_packages(d, purple, '^lib(.*)\.so$',
+    do_split_packages(d, purple, r'^lib(.*)\.so$',
         output_pattern='libpurple-protocol-%s',
         description='Libpurple protocol plugin for %s',
         prepend=True, extra_depends='')
 
-    do_split_packages(d, purple, '^(ssl-.*)\.so$',
+    do_split_packages(d, purple, r'^(ssl-.*)\.so$',
         output_pattern='libpurple-plugin-%s',
         description='libpurple plugin %s',
         prepend=True, extra_depends='libpurple-plugin-ssl')
 
-    do_split_packages(d, purple, '^([^l][^i][^b].*)\.so$',
+    do_split_packages(d, purple, r'^([^l][^i][^b].*)\.so$',
         output_pattern='libpurple-plugin-%s',
         description='libpurple plugin %s',
         prepend=True, extra_depends='')
 
-    do_split_packages(d, finch, '^([^l][^i][^b].*)\.so$',
+    do_split_packages(d, finch, r'^([^l][^i][^b].*)\.so$',
         output_pattern='finch-plugin-%s',
         description='Finch plugin %s',
         prepend=True, extra_depends='')
diff --git a/meta-oe/recipes-support/poco/poco_1.11.0.bb b/meta-oe/recipes-support/poco/poco_1.11.0.bb
index c364f7220b..027ff64692 100644
--- a/meta-oe/recipes-support/poco/poco_1.11.0.bb
+++ b/meta-oe/recipes-support/poco/poco_1.11.0.bb
@@ -72,7 +72,7 @@  python populate_packages:prepend () {
         packages.append(pkg)
         testrunners.append(modulename)
 
-    do_split_packages(d, poco_libdir, '^libPoco(.*)\.so\..*$',
+    do_split_packages(d, poco_libdir, r'^libPoco(.*)\.so\..*$',
                     'poco-%s', 'Poco %s component', extra_depends='', prepend=True, hook=hook)
 
     d.setVar("RRECOMMENDS:%s" % pn, " ".join(packages))
diff --git a/meta-xfce/recipes-xfce/xfce4-panel/xfce4-panel_4.16.3.bb b/meta-xfce/recipes-xfce/xfce4-panel/xfce4-panel_4.16.3.bb
index c9e65400d2..3c1864a802 100644
--- a/meta-xfce/recipes-xfce/xfce4-panel/xfce4-panel_4.16.3.bb
+++ b/meta-xfce/recipes-xfce/xfce4-panel/xfce4-panel_4.16.3.bb
@@ -17,7 +17,7 @@  SRC_URI += " \
 python populate_packages:prepend() {
     plugin_dir = d.expand('${libdir}/xfce4/panel/plugins/')
     plugin_name = d.expand('${PN}-plugin-%s')
-    do_split_packages(d, plugin_dir, '^lib(.*).so$', plugin_name,
+    do_split_packages(d, plugin_dir, r'^lib(.*)\.so$', plugin_name,
                       '${PN} plugin for %s', extra_depends='', prepend=True,
                       aux_files_pattern=['${datadir}/xfce4/panel/plugins/%s.desktop',
                                          '${sysconfdir}/xdg/xfce/panel/%s-*',