libselinux: build for musl

srcpkgs/libselinux/patches/fts.patch

@@ -0,0 +1,13 @@
+diff --git utils/Makefile utils/Makefile
+index 3615063..3c1be17 100644
+--- utils/Makefile
++++ utils/Makefile
+@@ -47,6 +47,8 @@ override CFLAGS += -I../include -D_GNU_SOURCE $(DISABLE_FLAGS) $(PCRE_CFLAGS)
+ override LDFLAGS += -L../src
+ override LDLIBS += -lselinux
+ PCRE_LDLIBS ?= -lpcre
++FTS_LDLIBS ?=
++override LDLIBS += $(FTS_LDLIBS)
+ 
+ ifeq ($(ANDROID_HOST),y)
+ TARGETS=sefcontext_compile

srcpkgs/libselinux/template

@@ -14,6 +14,11 @@ homepage="https://www.nsa.gov/what-we-do/research/selinux/"
 distfiles="https://github.com/SELinuxProject/selinux/releases/download/20191204/${pkgname}-${version}.tar.gz"
 checksum=2ea2b30f671dae9d6b1391cbe8fb2ce5d36a3ee4fb1cd3c32f0d933c31b82433
 
+if [ "$XBPS_TARGET_LIBC" = musl ]; then
+	makedepends+=" musl-fts-devel"
+	export FTS_LDLIBS="-lfts"
+fi
+
 libselinux-devel_package() {
 	short_desc+=" - development files"
 	depends="${sourcepkg}>=${version}_${revision}"