Update from Gnulib.

This incorporates:
2020-06-28 getrandom: do not depend on ‘open’ on mingw
2020-06-28 getrandom: fix compilation errors on older versions of mingw
* build-aux/config.sub, lib/getrandom.c, m4/getrandom.m4:
Copy from Gnulib
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.

2 files changed, 14 insertions, 1 deletions

diff --git a/lib/getrandom.c b/lib/getrandom.c
index f0b3f535007..030a78bb08d 100644
--- a/lib/getrandom.c
+++ b/lib/getrandom.c
@@ -29,7 +29,16 @@
 #if defined _WIN32 && ! defined __CYGWIN__
 # define WIN32_LEAN_AND_MEAN
 # include <windows.h>
-# include <bcrypt.h>
+# if HAVE_BCRYPT_H
+#  include <bcrypt.h>
+# else
+#  include <ntdef.h> /* NTSTATUS */
+typedef void * BCRYPT_ALG_HANDLE;
+#  define BCRYPT_USE_SYSTEM_PREFERRED_RNG 0x00000002
+#  if HAVE_LIB_BCRYPT
+extern NTSTATUS WINAPI BCryptGenRandom (BCRYPT_ALG_HANDLE, UCHAR *, ULONG, ULONG);
+#  endif
+# endif
 # if !HAVE_LIB_BCRYPT
 #  include <wincrypt.h>
 #  ifndef CRYPT_VERIFY_CONTEXT
diff --git a/lib/gnulib.mk.in b/lib/gnulib.mk.in
index 8174ea26fa5..35d2db09bd4 100644
--- a/lib/gnulib.mk.in
+++ b/lib/gnulib.mk.in
@@ -109,6 +109,7 @@
 #  futimens \
 #  getloadavg \
 #  getopt-gnu \
+#  getrandom \
 #  gettime \
 #  gettimeofday \
 #  gitlog-to-changelog \
@@ -1095,6 +1096,7 @@ gl_GNULIB_ENABLED_getdtablesize = @gl_GNULIB_ENABLED_getdtablesize@
 gl_GNULIB_ENABLED_getgroups = @gl_GNULIB_ENABLED_getgroups@
 gl_GNULIB_ENABLED_lchmod = @gl_GNULIB_ENABLED_lchmod@
 gl_GNULIB_ENABLED_malloca = @gl_GNULIB_ENABLED_malloca@
+gl_GNULIB_ENABLED_open = @gl_GNULIB_ENABLED_open@
 gl_GNULIB_ENABLED_strtoll = @gl_GNULIB_ENABLED_strtoll@
 gl_GNULIB_ENABLED_utimens = @gl_GNULIB_ENABLED_utimens@
 gl_LIBOBJS = @gl_LIBOBJS@
@@ -2168,7 +2170,9 @@ endif
 ## begin gnulib module open
 ifeq (,$(OMIT_GNULIB_MODULE_open))
 
+ifneq (,$(gl_GNULIB_ENABLED_open))
 
+endif
 EXTRA_DIST += open.c
 
 EXTRA_libgnu_a_SOURCES += open.c