Add libbsd recipe.

recipes/libbsd/Makefile

@@ -0,0 +1,31 @@
+name = libbsd
+version = 0.10.0
+pkgrel = 0
+pkgdesc = "commonly-used BSD functions not implemented by all libcs"
+url = "https://libbsd.freedesktop.org/"
+arch = "all"
+license = "BSD"
+dependencies = "musl>=1.1.16-r22"
+build-dependencies = bsd-compat-headers linux-headers
+build-dependencies += autoconf automake libtool
+URL = https://libbsd.freedesktop.org/releases/$(name)-$(version).tar.xz
+
+patches = disable-fpurge-test.patch
+
+# secfixes:
+#   0.10.0-r0:
+#     - CVE-2019-20367
+
+CONFIGURE_OPTIONS_USER = --prefix=/usr \
+		--sysconfdir=/etc \
+		--mandir=$(MANDIR) \
+		--infodir=$(SHAREDIR)/info \
+		--localstatedir=/var
+
+MAKE_INSTALL_OPTIONS_USER = -C "$(bdir)"
+
+SYSCONF ?= ../../
+include $(SYSCONF)/package.mk
+
+pre_configure:
+	cd $(bdir) ; autoreconf -fi

recipes/libbsd/disable-fpurge-test.patch

@@ -0,0 +1,10 @@
+--- libbsd-0.8.3/test/Makefile.am.old	2017-08-17 02:42:30.045825258 +0000
++++ libbsd-0.8.3/test/Makefile.am	2017-08-17 03:49:17.928202106 +0000
+@@ -37,7 +37,6 @@
+ 	humanize \
+ 	fgetln \
+ 	fparseln \
+-	fpurge \
+ 	md5 \
+ 	proctitle-init \
+ 	strmode \