package/libselinux: switch to pcre2

Switch to pcre2 which is available since version 3.2 and
https://github.com/SELinuxProject/selinux/commit/50f0910cf05bdc1d10710c7c3fb748a178473387
as pcre is EOL

pcre2 is used by default since version 3.4 and
https://github.com/SELinuxProject/selinux/commit/e0da140d82c0ebebf1060ce87d0f11276c7fc59a

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/libselinux/Config.in

@@ -4,7 +4,7 @@ config BR2_PACKAGE_LIBSELINUX
 	depends on !BR2_STATIC_LIBS
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_5 # libsepol
 	select BR2_PACKAGE_LIBSEPOL
-	select BR2_PACKAGE_PCRE
+	select BR2_PACKAGE_PCRE2
 	select BR2_PACKAGE_MUSL_FTS if !BR2_TOOLCHAIN_USES_GLIBC
 	help
 	  libselinux is the runtime SELinux library that provides

package/libselinux/libselinux.mk

@@ -11,7 +11,7 @@ LIBSELINUX_LICENSE_FILES = LICENSE
 LIBSELINUX_CPE_ID_VENDOR = selinuxproject
 
 LIBSELINUX_DEPENDENCIES = \
-	$(BR2_COREUTILS_HOST_DEPENDENCY) host-pkgconf libsepol pcre
+	$(BR2_COREUTILS_HOST_DEPENDENCY) host-pkgconf libsepol pcre2
 
 LIBSELINUX_INSTALL_STAGING = YES
 
@@ -20,7 +20,8 @@ LIBSELINUX_INSTALL_STAGING = YES
 LIBSELINUX_MAKE_OPTS = \
 	$(TARGET_CONFIGURE_OPTS) \
 	ARCH=$(NORMALIZED_ARCH) \
-	SHLIBDIR=/usr/lib
+	SHLIBDIR=/usr/lib \
+	USE_PCRE2=y
 
 LIBSELINUX_MAKE_INSTALL_TARGETS = install
 
@@ -76,14 +77,15 @@ define LIBSELINUX_INSTALL_TARGET_CMDS
 endef
 
 HOST_LIBSELINUX_DEPENDENCIES = \
-	host-pkgconf host-libsepol host-pcre host-swig host-python3
+	host-pkgconf host-libsepol host-pcre2 host-swig host-python3
 
 HOST_LIBSELINUX_MAKE_OPTS = \
 	$(HOST_CONFIGURE_OPTS) \
 	PREFIX=$(HOST_DIR) \
 	SHLIBDIR=$(HOST_DIR)/lib \
 	$(HOST_PKG_PYTHON_DISTUTILS_ENV) \
-	PYTHON=python$(PYTHON3_VERSION_MAJOR)
+	PYTHON=python$(PYTHON3_VERSION_MAJOR) \
+	USE_PCRE2=y
 
 define HOST_LIBSELINUX_BUILD_CMDS
 	$(HOST_MAKE_ENV) $(MAKE1) -C $(@D) \