libxcrypt: Update to 4.4.19 release and fix symbol version issues

This patch upgrades to the 4.4.19 release and replaces a configure patch
from "libxcrypt: fix sporadic failures in nativesdk-libxcrypt-compat" with
a fix to avoid leading spaces in CFLAGS causing failures.

The license changed a few filenames listed in the license but the overall
license remains unchanged.

(From OE-Core rev: 7a2144f065c913ef189011b94d90de4dde51a347)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/libxcrypt/files/0001-configure.ac-do-not-use-compute-symver-floor.patch

@@ -1,32 +0,0 @@
-From b28bb856ccebe8fded51d11362bf5920699eed59 Mon Sep 17 00:00:00 2001
-From: Alexander Kanavin <alex.kanavin@gmail.com>
-Date: Thu, 18 Mar 2021 10:52:13 +0000
-Subject: [PATCH] configure.ac: do not use compute-symver-floor
-
-This script (newly introduced in 4.4.18) sporadically fails, without
-failing configure(), which has been reported at
-https://github.com/besser82/libxcrypt/issues/123
-
-Upstream-Status: Inappropriate
-Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
----
- configure.ac | 6 +-----
- 1 file changed, 1 insertion(+), 5 deletions(-)
-
-diff --git a/configure.ac b/configure.ac
-index 45b91b4..f3ba945 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -426,11 +426,7 @@ if test x$enable_shared != xyes; then enable_obsolete_api=0; fi
- # need to be binary backward compatible with.
- if test $enable_obsolete_api = 1; then
-   AC_MSG_CHECKING([minimum symbol version to use for compatibility symbols])
--  SYMVER_FLOOR=$(
--    $PERL ${srcdir}/build-aux/compute-symver-floor \
--      ${srcdir}/lib/libcrypt.minver $host_os $host_cpu \
--    2>&AS_MESSAGE_LOG_FD
--  )
-+  SYMVER_FLOOR=GLIBC_2.0
-   AC_MSG_RESULT([$SYMVER_FLOOR])
-   case "$SYMVER_FLOOR" in
-     ERROR)

meta/recipes-core/libxcrypt/files/fix_cflags_handling.patch

@@ -0,0 +1,24 @@
+If you pass CFLAGS with a leading space, " " gets passed to popen and convinces
+gcc to try and open a file called " ". This results in a confusing error message
+like:
+
+x86_64-pokysdk-linux-gcc: error: : No such file or directory
+
+Avoid this by stripping empty elements out of CFLAGS.
+
+Upstream-Status: Submitted [https://github.com/besser82/libxcrypt/pull/126]
+Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
+
+Index: a/build-aux/compute-symver-floor
+===================================================================
+--- a/build-aux/compute-symver-floor
++++ b/build-aux/compute-symver-floor
+@@ -36,6 +36,8 @@ sub preprocessor_check {
+         die "C compiler not available\n" unless @CC;
+ 
+         @CFLAGS = sh_split($ENV{CFLAGS} // q{});
++        # Remove empty elements, particularly leading ones which cause issues with popen below
++        @CFLAGS = grep {$_} @CFLAGS;
+ 
+         # We call ensure_C_locale here, not from the main section,
+         # because this sub might not get called at all, in which

meta/recipes-core/libxcrypt/libxcrypt.inc

@@ -3,18 +3,18 @@ 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=bd5d9777dfe7076c4f2928f12fed226a \
+LIC_FILES_CHKSUM = "file://LICENSING;md5=afed27a72ae2a8075978299eebaa1f5d \
                     file://COPYING.LIB;md5=4fbd65380cdd255951079008b364516c \
                     "
 
 inherit autotools pkgconfig
 
-SRC_URI = "git://github.com/besser82/libxcrypt.git;branch=${SRCBRANCH} \
-           file://0001-configure.ac-do-not-use-compute-symver-floor.patch \
-           "
-SRCREV = "94d84f92ca123d851586016c4678eb1f21c19029"
+SRC_URI = "git://github.com/besser82/libxcrypt.git;branch=${SRCBRANCH}"
+SRCREV = "c79119414d7e30017d7b49566e7e4ea35112bdc8"
 SRCBRANCH ?= "develop"
 
+SRC_URI += "file://fix_cflags_handling.patch"
+
 PROVIDES = "virtual/crypt"
 
 FILES_${PN} = "${libdir}/libcrypt*.so.* \