Skip building sk-dummy library if no SK support.

2 files changed, 7 insertions, 1 deletions

diff --git a/Makefile.in b/Makefile.in
index 7c5ed0bd6..c9e4294d3 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -635,6 +635,8 @@ SK_DUMMY_OBJS=\
         regress/misc/sk-dummy/fatal.lo \
         ed25519.lo hash.lo ge25519.lo fe25519.lo sc25519.lo verify.lo
 
+SK_DUMMY_LIBRARY=@SK_DUMMY_LIBRARY@
+
 .c.lo: Makefile.in config.h
         $(CC) $(CFLAGS_NOPIE) $(PICFLAG) $(CPPFLAGS) -c $< -o $@
 
@@ -648,7 +650,7 @@ regress-binaries: regress-prep $(LIBCOMPAT) \
         regress/netcat$(EXEEXT) \
         regress/check-perm$(EXEEXT) \
         regress/mkdtemp$(EXEEXT) \
-        regress/misc/sk-dummy/sk-dummy.so
+        $(SK_DUMMY_LIBRARY)
 
 regress-unit-binaries: regress-prep $(REGRESSLIBS) \
         regress/unittests/sshbuf/test_sshbuf$(EXEEXT) \
diff --git a/configure.ac b/configure.ac
index 003b235e5..460383757 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3137,6 +3137,10 @@ AC_MSG_RESULT([$enable_pkcs11])
 AC_MSG_CHECKING([whether to enable U2F])
 if test "x$enable_sk" = "xyes" ; then
         AC_DEFINE([ENABLE_SK], [], [Enable for U2F/FIDO support])
+        AC_SUBST(SK_DUMMY_LIBRARY, [regress/misc/sk-dummy/sk-dummy.so])
+else
+        # Do not try to build sk-dummy library.
+        AC_SUBST(SK_DUMMY_LIBRARY, [""])
 fi
 AC_MSG_RESULT([$enable_sk])