[OE-core] [PATCH 3/3] nativesdk-glibc: Split glibc and libcrypt to use libxcrypt instead

Richard Purdie richard.purdie at linuxfoundation.org
Sat Apr 7 10:43:51 UTC 2018


Fedora28[1] has decided to go ahead and use libxcrypt to replace libcrypt from glibc
despite the change not having merged into glibc upstream yet. This breaks the use of
uninative in OE on fedora28 since binaries there are now using new symbols only found
in libxcrypt. libxcrypt is meant to be backwards compatible with libcrypt but not the
reverse.

Since this will impact OE in the next release cycle, this changes nativesdk only
to use this new model and adds libxcrypt to work in that case. This allows us to
build a uninative which is compatible with fedora28 and previous other OSes.

In order to work, recipes will now need to depend on virtual/crypt where they use
libcrypt since its now a separate library and we can't depend on it from glibc to
preseve backwards compatibility since glibc needs to build first. For now, only the
problematic nativesdk recipes have been fixed up. For target use, the default
provider remains glibc for now. Assuming this change is merged into upstream glibc,
we will need to roll this change out for the target but we will do this in the next
release cycle when we can better deal with the resulting bugs.

[1] https://fedoraproject.org/wiki/Changes/Replace_glibc_libcrypt_with_libxcrypt

Original patch from Charles-Antoine Couret <charles-antoine.couret at essensium.com>,
tweaked by RP to add virtual provides, SkipRecipe for libxcrypt and other minor
tweaks.

Signed-off-by: Charles-Antoine Couret <charles-antoine.couret at essensium.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 meta/conf/bitbake.conf                             |   1 +
 meta/recipes-core/glibc/glibc.inc                  |   5 +-
 .../glibc/0031-nativesdk-deprecate-libcrypt.patch  | 418 +++++++++++++++++++++
 meta/recipes-core/glibc/glibc_2.27.bb              |   1 +
 meta/recipes-core/glibc/site_config/headers        |   1 -
 meta/recipes-core/libxcrypt/libxcrypt_4.0.0.bb     |  31 ++
 meta/recipes-core/meta/uninative-tarball.bb        |   1 +
 meta/recipes-core/util-linux/util-linux.inc        |   2 +-
 meta/recipes-devtools/perl/perl_5.24.1.bb          |   2 +-
 meta/recipes-extended/shadow/shadow.inc            |   3 +-
 10 files changed, 459 insertions(+), 6 deletions(-)
 create mode 100644 meta/recipes-core/glibc/glibc/0031-nativesdk-deprecate-libcrypt.patch
 create mode 100644 meta/recipes-core/libxcrypt/libxcrypt_4.0.0.bb

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 93f57f3..60590e2 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -187,6 +187,7 @@ ASSUME_PROVIDED = "\
     tar-native \
     virtual/libintl-native \
     virtual/libiconv-native \
+    virtual/crypt-native \
     texinfo-native \
     bash-native \
     sed-native \
diff --git a/meta/recipes-core/glibc/glibc.inc b/meta/recipes-core/glibc/glibc.inc
index 361a6fd..9e02ffd 100644
--- a/meta/recipes-core/glibc/glibc.inc
+++ b/meta/recipes-core/glibc/glibc.inc
@@ -35,7 +35,10 @@ siteconfig_do_siteconfig_gencache_prepend = " \
 DEPENDS = "virtual/${TARGET_PREFIX}gcc-initial libgcc-initial linux-libc-headers virtual/${TARGET_PREFIX}libc-initial"
 # nptl needs libgcc but dlopens it, so our shlibs code doesn't detect this
 #RDEPENDS_${PN} += "${@['','libgcc']['nptl' in '${GLIBC_ADDONS}']}"
-PROVIDES = "virtual/libc virtual/${TARGET_PREFIX}libc-for-gcc"
+
+CRYPTPROVIDES = "virtual/crypt"
+CRYPTPROVIDES_class-nativesdk = ""
+PROVIDES = "virtual/libc virtual/${TARGET_PREFIX}libc-for-gcc ${CRYPTPROVIDES}"
 PROVIDES += "virtual/libintl virtual/libiconv"
 inherit autotools texinfo distro_features_check systemd
 
diff --git a/meta/recipes-core/glibc/glibc/0031-nativesdk-deprecate-libcrypt.patch b/meta/recipes-core/glibc/glibc/0031-nativesdk-deprecate-libcrypt.patch
new file mode 100644
index 0000000..6b34c70
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/0031-nativesdk-deprecate-libcrypt.patch
@@ -0,0 +1,418 @@
+Background information:
+
+https://sourceware.org/ml/libc-alpha/2017-08/msg01257.html
+https://fedoraproject.org/wiki/Changes/Replace_glibc_libcrypt_with_libxcrypt
+
+Upstream-Status: Submitted [libc-alpha at sourceware.org]
+
+From: Zack Weinberg <zackw at panix.com>
+Subject: [PATCH] Deprecate libcrypt and don't build it by default
+
+Back in June, Björn Esser proposed to add OpenBSD-compatible bcrypt
+support to our implementation of crypt(3), and Zack Weinberg replied
+that it might actually make more sense to _remove_ libcrypt from
+glibc, freeing up libcrypt.so.1 and crypt.h to be provided by a
+separate project that could move faster.  (For instance, libxcrypt:
+https://github.com/besser82/libxcrypt)
+
+This patch disables build and installation of libcrypt by default.  It
+can be re-enabled with --enable-obsolete-crypt to configure.  Unlike
+libnsl, we do *not* install a runtime shared library; that's left to
+the replacement.  (Unlike the SunRPC situation, I think we can
+probably drop this code altogether in a release or two.)
+
+The function prototypes for crypt and encrypt are removed from
+unistd.h, and the function prototype for setkey is removed from
+stdlib.h; they do *not* come back with --enable-obsolete-crypt.  This
+means glibc no longer provides the POSIX CRYPT option, and the macro
+_XOPEN_CRYPT is also removed from unistd.h to indicate that.
+(_SC_XOPEN_CRYPT is still defined, but sysconf(_SC_XOPEN_CRYPT) will
+return -1 at runtime.)  These functions are also unconditionally
+removed from conform/data/{stdlib,unistd}.h-data.
+
+	* posix/unistd.h (_XOPEN_CRYPT, crypt, encrypt): Don't declare.
+	* stdlib/stdlib.h (setkey): Don't declare.
+
+	* configure.ac (--enable-obsolete-crypt): New configure option.
+	* configure: Regenerate.
+	* config.make.in (build-obsolete-crypt): New makefile variable.
+	* crypt/Banner: Delete file.
+	* crypt/Makefile: Don't build anything unless
+	$(build-obsolete-crypt) is 'yes'.
+	* sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile: Only add things
+	to libcrypt-sysdep_routines when $(build-obsolete-crypt) is 'yes'.
+	* sysdeps/sparc/sparc64/multiarch/Makefile: Likewise.
+	* sysdeps/unix/sysv/linux/arm/Makefile: Likewise.
+
+	* conform/Makefile: Only include libcrypt.a in linknamespace tests
+	when $(build-obsolete-crypt) is 'yes'.
+	* conform/data/stdlib.h-data (setkey): Don't expect.
+	* conform/data/unistd.h-data (crypt, encrypt): Don't expect.
+	* elf/Makefile: Only perform various tests of libcrypt.so/libcrypt.a
+	when $(build-obsolete-crypt) is 'yes'.
+	* elf/tst-linkall-static.c: Don't include crypt.h when USE_CRYPT
+	is false.
+---
+ NEWS                                             | 18 ++++++++++++++++++
+ config.make.in                                   |  1 +
+ configure                                        | 13 +++++++++++++
+ configure.ac                                     |  8 ++++++++
+ conform/Makefile                                 | 14 ++++++++++----
+ conform/data/stdlib.h-data                       |  3 ---
+ conform/data/unistd.h-data                       |  6 ------
+ crypt/Makefile                                   |  5 +++++
+ elf/Makefile                                     | 16 ++++++++++++----
+ elf/tst-linkall-static.c                         |  2 ++
+ posix/unistd.h                                   | 16 ----------------
+ stdlib/stdlib.h                                  |  6 ------
+ sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile |  2 ++
+ sysdeps/sparc/sparc64/multiarch/Makefile         |  2 ++
+ sysdeps/unix/sysv/linux/arm/Makefile             |  2 ++
+ 15 files changed, 75 insertions(+), 39 deletions(-)
+
+diff --git a/config.make.in b/config.make.in
+index 9e5e24b2c6..8fe610d04d 100644
+--- a/config.make.in
++++ b/config.make.in
+@@ -82,6 +82,7 @@ mach-interface-list = @mach_interface_list@
+ 
+ experimental-malloc = @experimental_malloc@
+ 
++build-obsolete-crypt = @build_obsolete_crypt@
+ nss-crypt = @libc_cv_nss_crypt@
+ static-nss-crypt = @libc_cv_static_nss_crypt@
+ 
+diff --git a/configure b/configure
+index 7a8bd3f817..46f6bd7f86 100755
+--- a/configure
++++ b/configure
+@@ -672,6 +672,7 @@ base_machine
+ have_tunables
+ build_pt_chown
+ build_nscd
++build_obsolete_crypt
+ build_obsolete_nsl
+ link_obsolete_rpc
+ libc_cv_static_nss_crypt
+@@ -782,6 +783,7 @@ enable_experimental_malloc
+ enable_nss_crypt
+ enable_obsolete_rpc
+ enable_obsolete_nsl
++enable_obsolete_crypt
+ enable_systemtap
+ enable_build_nscd
+ enable_nscd
+@@ -1453,6 +1455,7 @@ Optional Features:
+                           link-time usage
+   --enable-obsolete-nsl   build and install the obsolete libnsl library and
+                           depending NSS modules
++  --enable-obsolete-crypt build and install the obsolete libcrypt library
+   --enable-systemtap      enable systemtap static probe points [default=no]
+   --disable-build-nscd    disable building and installing the nscd daemon
+   --disable-nscd          library functions will not contact the nscd daemon
+@@ -3632,6 +3635,16 @@ if test "$build_obsolete_nsl" = yes; then
+ 
+ fi
+ 
++# Check whether --enable-obsolete-crypt was given.
++if test "${enable_obsolete_crypt+set}" = set; then :
++  enableval=$enable_obsolete_crypt; build_obsolete_crypt=$enableval
++else
++  build_obsolete_crypt=no
++fi
++
++
++
++
+ # Check whether --enable-systemtap was given.
+ if test "${enable_systemtap+set}" = set; then :
+   enableval=$enable_systemtap; systemtap=$enableval
+diff --git a/configure.ac b/configure.ac
+index ca1282a6b3..0142353740 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -378,6 +378,14 @@ if test "$build_obsolete_nsl" = yes; then
+   AC_DEFINE(LINK_OBSOLETE_NSL)
+ fi
+ 
++AC_ARG_ENABLE([obsolete-crypt],
++              AC_HELP_STRING([--enable-obsolete-crypt],
++                             [build and install the obsolete libcrypt library]),
++              [build_obsolete_crypt=$enableval],
++              [build_obsolete_crypt=no])
++AC_SUBST(build_obsolete_crypt)
++
++
+ AC_ARG_ENABLE([systemtap],
+               [AS_HELP_STRING([--enable-systemtap],
+ 	       [enable systemtap static probe points @<:@default=no@:>@])],
+diff --git a/conform/Makefile b/conform/Makefile
+index 864fdeca21..5ef474fb24 100644
+--- a/conform/Makefile
++++ b/conform/Makefile
+@@ -193,22 +193,28 @@ linknamespace-libs-thr = $(linknamespace-libs-isoc) \
+ 			 $(common-objpfx)rt/librt.a $(static-thread-library)
+ linknamespace-libs-posix = $(linknamespace-libs-thr) \
+ 			   $(common-objpfx)dlfcn/libdl.a
+-linknamespace-libs-xsi = $(linknamespace-libs-posix) \
+-			 $(common-objpfx)crypt/libcrypt.a
++linknamespace-libs-xsi = $(linknamespace-libs-posix)
+ linknamespace-libs-ISO = $(linknamespace-libs-isoc)
+ linknamespace-libs-ISO99 = $(linknamespace-libs-isoc)
+ linknamespace-libs-ISO11 = $(linknamespace-libs-isoc)
+-linknamespace-libs-XPG4 = $(linknamespace-libs-isoc) \
+-			  $(common-objpfx)crypt/libcrypt.a
++linknamespace-libs-XPG4 = $(linknamespace-libs-isoc)
+ linknamespace-libs-XPG42 = $(linknamespace-libs-XPG4)
+ linknamespace-libs-POSIX = $(linknamespace-libs-thr)
+ linknamespace-libs-UNIX98 = $(linknamespace-libs-xsi)
+ linknamespace-libs-XOPEN2K = $(linknamespace-libs-xsi)
+ linknamespace-libs-POSIX2008 = $(linknamespace-libs-posix)
+ linknamespace-libs-XOPEN2K8 = $(linknamespace-libs-xsi)
++
++ifeq ($(build-obsolete-crypt),yes)
++linknamespace-libs-xsi += $(common-objpfx)crypt/libcrypt.a
++linknamespace-libs-XPG4 += $(common-objpfx)crypt/libcrypt.a
++endif
++
+ linknamespace-libs = $(foreach std,$(conformtest-standards),\
+ 				   $(linknamespace-libs-$(std)))
+ 
++
++
+ $(linknamespace-symlist-stdlibs-tests): $(objpfx)symlist-stdlibs-%: \
+ 					$(linknamespace-libs)
+ 	LC_ALL=C $(READELF) -W -s $(linknamespace-libs-$*) > $@; \
+diff --git a/conform/data/stdlib.h-data b/conform/data/stdlib.h-data
+index d8fcccc2fb..6913828196 100644
+--- a/conform/data/stdlib.h-data
++++ b/conform/data/stdlib.h-data
+@@ -149,9 +149,6 @@ function {unsigned short int*} seed48 (unsigned short int[3])
+ #if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined XPG4 && !defined XPG42 && !defined UNIX98
+ function int setenv (const char*, const char*, int)
+ #endif
+-#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
+-function void setkey (const char*)
+-#endif
+ #if !defined ISO && !defined ISO99 && !defined ISO11 && !defined XPG4 && !defined POSIX && !defined POSIX2008
+ function {char*} setstate (char*)
+ #endif
+diff --git a/conform/data/unistd.h-data b/conform/data/unistd.h-data
+index ddf4f25132..aa070528e8 100644
+--- a/conform/data/unistd.h-data
++++ b/conform/data/unistd.h-data
+@@ -437,9 +437,6 @@ function int chroot (const char*)
+ function int chown (const char*, uid_t, gid_t)
+ function int close (int)
+ function size_t confstr (int, char*, size_t)
+-#if !defined POSIX && !defined POSIX2008
+-function {char*} crypt (const char*, const char*)
+-#endif
+ #if defined XPG4 || defined XPG42 || defined UNIX98
+ function {char*} ctermid (char*)
+ function {char*} cuserid (char*)
+@@ -449,9 +446,6 @@ allow cuserid
+ #endif
+ function int dup (int)
+ function int dup2 (int, int)
+-#if !defined POSIX && !defined POSIX2008
+-function void encrypt (char[64], int)
+-#endif
+ function int execl (const char*, const char*, ...)
+ function int execle (const char*, const char*, ...)
+ function int execlp (const char*, const char*, ...)
+diff --git a/crypt/Makefile b/crypt/Makefile
+index 303800df73..024ec2c6ab 100644
+--- a/crypt/Makefile
++++ b/crypt/Makefile
+@@ -22,6 +22,8 @@ subdir	:= crypt
+ 
+ include ../Makeconfig
+ 
++ifeq ($(build-obsolete-crypt),yes)
++
+ headers := crypt.h
+ 
+ extra-libs := libcrypt
+@@ -52,9 +54,11 @@ tests += md5test sha256test sha512test
+ # machine over a minute.
+ xtests = md5test-giant
+ endif
++endif
+ 
+ include ../Rules
+ 
++ifeq ($(build-obsolete-crypt),yes)
+ ifneq ($(nss-crypt),yes)
+ md5-routines := md5 $(filter md5%,$(libcrypt-sysdep_routines))
+ sha256-routines := sha256 $(filter sha256%,$(libcrypt-sysdep_routines))
+@@ -71,3 +75,4 @@ $(addprefix $(objpfx),$(tests)): $(objpfx)libcrypt.so
+ else
+ $(addprefix $(objpfx),$(tests)): $(objpfx)libcrypt.a
+ endif
++endif
+diff --git a/elf/Makefile b/elf/Makefile
+index 2a432d8bee..366f7b80ec 100644
+--- a/elf/Makefile
++++ b/elf/Makefile
+@@ -385,15 +385,19 @@ $(objpfx)tst-_dl_addr_inside_object: $(objpfx)dl-addr-obj.os
+ CFLAGS-tst-_dl_addr_inside_object.c += $(PIE-ccflag)
+ endif
+ 
+-# By default tst-linkall-static should try to use crypt routines to test
+-# static libcrypt use.
+-CFLAGS-tst-linkall-static.c += -DUSE_CRYPT=1
++ifeq ($(build-obsolete-crypt),yes)
++# If the libcrypt library is being built, tst-linkall-static should
++# try to use crypt routines to test static libcrypt use.
++CFLAGS-tst-linkall-static.c = -DUSE_CRYPT=1
+ # However, if we are using NSS crypto and we don't have a static
+ # library, then we exclude the use of crypt functions in the test.
+ # We similarly exclude libcrypt.a from the static link (see below).
+ ifeq (yesno,$(nss-crypt)$(static-nss-crypt))
+ CFLAGS-tst-linkall-static.c += -UUSE_CRYPT -DUSE_CRYPT=0
+ endif
++else
++CFLAGS-tst-linkall-static.c = -DUSE_CRYPT=0
++endif
+ 
+ include ../Rules
+ 
+@@ -1113,8 +1117,10 @@ localplt-built-dso := $(addprefix $(common-objpfx),\
+ 				  rt/librt.so \
+ 				  dlfcn/libdl.so \
+ 				  resolv/libresolv.so \
+-				  crypt/libcrypt.so \
+ 		       )
++ifeq ($(build-obsolete-crypt),yes)
++localplt-built-dso += $(addprefix $(common-objpfx), crypt/libcrypt.so)
++endif
+ ifeq ($(build-mathvec),yes)
+ localplt-built-dso += $(addprefix $(common-objpfx), mathvec/libmvec.so)
+ endif
+@@ -1395,6 +1401,7 @@ $(objpfx)tst-linkall-static: \
+   $(common-objpfx)resolv/libanl.a \
+   $(static-thread-library)
+ 
++ifeq ($(build-obsolete-crypt),yes)
+ # If we are using NSS crypto and we have the ability to link statically
+ # then we include libcrypt.a, otherwise we leave out libcrypt.a and
+ # link as much as we can into the tst-linkall-static test.  This assumes
+@@ -1410,6 +1417,7 @@ ifeq (no,$(nss-crypt))
+ $(objpfx)tst-linkall-static: \
+   $(common-objpfx)crypt/libcrypt.a
+ endif
++endif
+ 
+ # The application depends on the DSO, and the DSO loads the plugin.
+ # The plugin also depends on the DSO. This creates the circular
+diff --git a/elf/tst-linkall-static.c b/elf/tst-linkall-static.c
+index e8df38f74e..0ffae7c723 100644
+--- a/elf/tst-linkall-static.c
++++ b/elf/tst-linkall-static.c
+@@ -18,7 +18,9 @@
+ 
+ #include <math.h>
+ #include <pthread.h>
++#if USE_CRYPT
+ #include <crypt.h>
++#endif
+ #include <resolv.h>
+ #include <dlfcn.h>
+ #include <utmp.h>
+diff --git a/posix/unistd.h b/posix/unistd.h
+index 4d149f9945..e75ce4d4ec 100644
+--- a/posix/unistd.h
++++ b/posix/unistd.h
+@@ -107,9 +107,6 @@ __BEGIN_DECLS
+ /* The X/Open Unix extensions are available.  */
+ #define _XOPEN_UNIX	1
+ 
+-/* Encryption is present.  */
+-#define	_XOPEN_CRYPT	1
+-
+ /* The enhanced internationalization capabilities according to XPG4.2
+    are present.  */
+ #define	_XOPEN_ENH_I18N	1
+@@ -1118,20 +1115,7 @@ ssize_t copy_file_range (int __infd, __off64_t *__pinoff,
+ extern int fdatasync (int __fildes);
+ #endif /* Use POSIX199309 */
+ 
+-
+-/* XPG4.2 specifies that prototypes for the encryption functions must
+-   be defined here.  */
+ #ifdef	__USE_XOPEN
+-/* Encrypt at most 8 characters from KEY using salt to perturb DES.  */
+-extern char *crypt (const char *__key, const char *__salt)
+-     __THROW __nonnull ((1, 2));
+-
+-/* Encrypt data in BLOCK in place if EDFLAG is zero; otherwise decrypt
+-   block in place.  */
+-extern void encrypt (char *__glibc_block, int __edflag)
+-     __THROW __nonnull ((1));
+-
+-
+ /* Swab pairs bytes in the first N bytes of the area pointed to by
+    FROM and copy the result to TO.  The value of TO must not be in the
+    range [FROM - N + 1, FROM - 1].  If N is odd the first byte in FROM
+diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
+index 6b1ead31e0..8e23e93557 100644
+--- a/stdlib/stdlib.h
++++ b/stdlib/stdlib.h
+@@ -958,12 +958,6 @@ extern int getsubopt (char **__restrict __optionp,
+ #endif
+ 
+ 
+-#ifdef __USE_XOPEN
+-/* Setup DES tables according KEY.  */
+-extern void setkey (const char *__key) __THROW __nonnull ((1));
+-#endif
+-
+-
+ /* X/Open pseudo terminal handling.  */
+ 
+ #ifdef __USE_XOPEN2KXSI
+diff --git a/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile b/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
+index a6d08f3a00..d8b8297fb0 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
++++ b/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
+@@ -1,6 +1,8 @@
+ ifeq ($(subdir),crypt)
++ifeq ($(build-obsolete-crypt),yes)
+ libcrypt-sysdep_routines += md5-crop sha256-crop sha512-crop
+ endif
++endif
+ 
+ ifeq ($(subdir),locale)
+ localedef-aux += md5-crop
+diff --git a/sysdeps/sparc/sparc64/multiarch/Makefile b/sysdeps/sparc/sparc64/multiarch/Makefile
+index eaf758e7aa..0198f9886f 100644
+--- a/sysdeps/sparc/sparc64/multiarch/Makefile
++++ b/sysdeps/sparc/sparc64/multiarch/Makefile
+@@ -1,6 +1,8 @@
+ ifeq ($(subdir),crypt)
++ifeq ($(build-obsolete-crypt),yes)
+ libcrypt-sysdep_routines += md5-crop sha256-crop sha512-crop
+ endif
++endif
+ 
+ ifeq ($(subdir),locale)
+ localedef-aux += md5-crop
+diff --git a/sysdeps/unix/sysv/linux/arm/Makefile b/sysdeps/unix/sysv/linux/arm/Makefile
+index 4adc35de04..6cab4f3a31 100644
+--- a/sysdeps/unix/sysv/linux/arm/Makefile
++++ b/sysdeps/unix/sysv/linux/arm/Makefile
+@@ -19,8 +19,10 @@ endif
+ # Add a syscall function to each library that needs one.
+ 
+ ifeq ($(subdir),crypt)
++ifeq ($(build-obsolete-crypt),yes)
+ libcrypt-sysdep_routines += libc-do-syscall
+ endif
++endif
+ 
+ ifeq ($(subdir),rt)
+ librt-sysdep_routines += libc-do-syscall
+-- 
+2.16.0
+
diff --git a/meta/recipes-core/glibc/glibc_2.27.bb b/meta/recipes-core/glibc/glibc_2.27.bb
index 772351a..c814798 100644
--- a/meta/recipes-core/glibc/glibc_2.27.bb
+++ b/meta/recipes-core/glibc/glibc_2.27.bb
@@ -54,6 +54,7 @@ NATIVESDKFIXES_class-nativesdk = "\
            file://0003-nativesdk-glibc-Raise-the-size-of-arrays-containing-.patch \
            file://0004-nativesdk-glibc-Allow-64-bit-atomics-for-x86.patch \
            file://relocate-locales.patch \
+           file://0031-nativesdk-deprecate-libcrypt.patch \
 "
 
 S = "${WORKDIR}/git"
diff --git a/meta/recipes-core/glibc/site_config/headers b/meta/recipes-core/glibc/site_config/headers
index 609ab53..69fedea 100644
--- a/meta/recipes-core/glibc/site_config/headers
+++ b/meta/recipes-core/glibc/site_config/headers
@@ -9,7 +9,6 @@ asm/page.h
 asm/types.h
 assert.h
 byteswap.h
-crypt.h
 ctype.h
 dirent.h
 dlfcn.h
diff --git a/meta/recipes-core/libxcrypt/libxcrypt_4.0.0.bb b/meta/recipes-core/libxcrypt/libxcrypt_4.0.0.bb
new file mode 100644
index 0000000..b1982c1
--- /dev/null
+++ b/meta/recipes-core/libxcrypt/libxcrypt_4.0.0.bb
@@ -0,0 +1,31 @@
+SUMMARY = "Extended cryptographic library (from glibc)"
+DESCRIPTION = "Forked code from glibc libary to extract only crypto part."
+HOMEPAGE = "https://github.com/besser82/libxcrypt"
+SECTION = "libs"
+LICENSE = "LGPLv2.1"
+LIC_FILES_CHKSUM ?= "file://LICENSING;md5=d1cc18f512ded3bd6000f3729f31be08 \
+      file://COPYING.LIB;md5=4fbd65380cdd255951079008b364516c \
+"
+
+inherit autotools
+
+SRCREV ?= "215b32aa4e0b255c3356a96bd6d257661bad73ca"
+SRCBRANCH ?= "master"
+
+SRC_URI = "git://github.com/besser82/libxcrypt.git;branch=${SRCBRANCH}"
+
+PROVIDES = "virtual/crypt"
+
+FILES_${PN} = "${libdir}/libcrypt*.so.* ${libdir}/libcrypt-*.so ${libdir}/libowcrypt*.so.* ${libdir}/libowcrypt-*.so"
+
+S = "${WORKDIR}/git"
+
+BUILD_CPPFLAGS = "-I${STAGING_INCDIR_NATIVE}"
+TARGET_CPPFLAGS = "-I${STAGING_DIR_TARGET}${includedir}"
+
+python () {
+    if not bb.data.inherits_class('nativesdk', d):
+        raise bb.parse.SkipRecipe("Recipe only applies in nativesdk case for now")
+}
+
+BBCLASSEXTEND = "nativesdk"
diff --git a/meta/recipes-core/meta/uninative-tarball.bb b/meta/recipes-core/meta/uninative-tarball.bb
index 5fabf7f..38c3a31 100644
--- a/meta/recipes-core/meta/uninative-tarball.bb
+++ b/meta/recipes-core/meta/uninative-tarball.bb
@@ -13,6 +13,7 @@ TOOLCHAIN_HOST_TASK = "\
     nativesdk-glibc-gconv-utf-16 \
     nativesdk-glibc-gconv-cp1252 \
     nativesdk-patchelf \
+    nativesdk-libxcrypt \
     "
 
 INHIBIT_DEFAULT_DEPS = "1"
diff --git a/meta/recipes-core/util-linux/util-linux.inc b/meta/recipes-core/util-linux/util-linux.inc
index 5e40b20..157416d 100644
--- a/meta/recipes-core/util-linux/util-linux.inc
+++ b/meta/recipes-core/util-linux/util-linux.inc
@@ -20,7 +20,7 @@ LIC_FILES_CHKSUM = "file://README.licensing;md5=1715f5ee3e01203ca1e1e0b9ee65918c
 
 #gtk-doc is not enabled as it requires xmlto which requires util-linux
 inherit autotools gettext pkgconfig systemd update-alternatives python3-dir bash-completion ptest
-DEPENDS = "zlib ncurses"
+DEPENDS = "zlib ncurses virtual/crypt"
 DEPENDS_append_class-native = " lzo-native"
 DEPENDS_append_class-nativesdk = " lzo-native"
 
diff --git a/meta/recipes-devtools/perl/perl_5.24.1.bb b/meta/recipes-devtools/perl/perl_5.24.1.bb
index 66ccd7f..222dd88 100644
--- a/meta/recipes-devtools/perl/perl_5.24.1.bb
+++ b/meta/recipes-devtools/perl/perl_5.24.1.bb
@@ -1,7 +1,7 @@
 require perl.inc
 
 # We need gnugrep (for -I)
-DEPENDS = "db grep-native gdbm zlib"
+DEPENDS = "db grep-native gdbm zlib virtual/crypt"
 
 # Pick up patches from debian
 # http://ftp.de.debian.org/debian/pool/main/p/perl/perl_5.22.0-1.debian.tar.xz
diff --git a/meta/recipes-extended/shadow/shadow.inc b/meta/recipes-extended/shadow/shadow.inc
index 48a3be8..673207f 100644
--- a/meta/recipes-extended/shadow/shadow.inc
+++ b/meta/recipes-extended/shadow/shadow.inc
@@ -6,8 +6,7 @@ LICENSE = "BSD | Artistic-1.0"
 LIC_FILES_CHKSUM = "file://COPYING;md5=ed80ff1c2b40843cf5768e5229cf16e5 \
                     file://src/passwd.c;beginline=8;endline=30;md5=d83888ea14ae61951982d77125947661"
 
-DEPENDS_class-native = ""
-DEPENDS_class-nativesdk = ""
+DEPENDS = "virtual/crypt"
 
 SRC_URI = "http://pkg-shadow.alioth.debian.org/releases/${BPN}-${PV}.tar.xz \
            file://shadow-4.1.3-dots-in-usernames.patch \
-- 
2.7.4




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