https://dev.gnupg.org/T6442

Index: configure
--- configure.orig
+++ configure
@@ -7524,7 +7524,7 @@ else $as_nop
     lt_cv_sys_max_cmd_len=8192;
     ;;
 
-  netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+  netbsd* | freebsd* | openbsd* | darwin* | dragonfly* | secbsd*)
     # This has been around since 386BSD, at least.  Likely further.
     if test -x /sbin/sysctl; then
       lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
@@ -7976,7 +7976,7 @@ freebsd* | dragonfly*)
     i*86 )
       # Not sure whether the presence of OpenBSD here was a mistake.
       # Let's accept both of them until this is cleared up.
-      lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library'
+      lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly|SecBSD)/i[3-9]86 (compact )?demand paged shared library'
       lt_cv_file_magic_cmd=/usr/bin/file
       lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
       ;;
@@ -8706,7 +8706,7 @@ old_postuninstall_cmds=
 
 if test -n "$RANLIB"; then
   case $host_os in
-  openbsd*)
+  openbsd* | secbsd*)
     old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib"
     ;;
   *)
@@ -11606,7 +11606,7 @@ printf %s "checking whether the $compiler linker ($LD)
     # we just hope/assume this is gcc and not c89 (= MSVC++)
     with_gnu_ld=yes
     ;;
-  openbsd*)
+  openbsd* | secbsd*)
     with_gnu_ld=no
     ;;
   linux* | k*bsd*-gnu | gnu*)
@@ -20027,6 +20027,12 @@ ac_fn_c_check_func "$LINENO" "getentropy" "ac_cv_func_
 if test "x$ac_cv_func_getentropy" = xyes
 then :
   printf "%s\n" "#define HAVE_GETENTROPY 1" >>confdefs.h
+
+fi
+ac_fn_c_check_func "$LINENO" "getrandom" "ac_cv_func_getrandom"
+if test "x$ac_cv_func_getrandom" = xyes
+then :
+  printf "%s\n" "#define HAVE_GETRANDOM 1" >>confdefs.h
 
 fi