shadow: link executables statically for -native variant

shadow 4.14.x adds a number of libraries it dynamically links with
(md, bsd, attr). This causes troubles in setscene tasks where
shadow executables are used (such as useradd), as pulling in
the needed dynamic libraries needs unpleasant special-casing.

(From OE-Core rev: 495ff95eae14a91c94187f78a0b30c7957c9b168)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/conf/distro/include/no-static-libs.inc

@@ -21,6 +21,11 @@ DISABLE_STATIC:pn-libusb1-native = ""
 # needed by rust
 DISABLE_STATIC:pn-musl = ""
 
+# needed by shadow-native to build static executables, particularly useradd
+DISABLE_STATIC:pn-attr-native = ""
+DISABLE_STATIC:pn-libbsd-native = ""
+DISABLE_STATIC:pn-libmd-native = ""
+
 EXTRA_OECONF:append = "${DISABLE_STATIC}"
 
 EXTRA_OECMAKE:append:pn-libical = " -DSHARED_ONLY=True"

meta/recipes-extended/shadow/shadow.inc

@@ -47,6 +47,16 @@ EXTRA_OECONF += "--without-libcrack \
 
 CFLAGS:append:libc-musl = " -DLIBBSD_OVERLAY"
 
+# Force static linking of utilities so we can use from the sysroot/sstate for useradd
+# without worrying about the dependency libraries being available
+LDFLAGS:append:class-native = " -no-pie"
+do_compile:prepend:class-native () {
+	sed -i -e 's#\(LIBS.*\)-lbsd#\1 ${STAGING_LIBDIR}/libbsd.a ${STAGING_LIBDIR}/libmd.a#g' \
+	       -e 's#\(LIBBSD.*\)-lbsd#\1 ${STAGING_LIBDIR}/libbsd.a ${STAGING_LIBDIR}/libmd.a#g' \
+	       -e 's#\(LIBATTR.*\)-lattr#\1 ${STAGING_LIBDIR}/libattr.a#g' \
+               ${B}/lib/Makefile ${B}/src/Makefile
+}
+
 NSCDOPT = ""
 NSCDOPT:class-native = "--without-nscd"
 NSCDOPT:class-nativesdk = "--without-nscd"