new file mode 100644
@@ -0,0 +1,31 @@
+From: Alper Ak <alperyasinak1@gmail.com>
+Date: Thu, 10 Sep 2026 00:10:00 +0300
+Subject: [PATCH] configure: do not assume GOST works when cross compiling
+
+The GOST check is a run test, so when cross compiling configure cannot
+execute it and falls back to "maybe", which enables GOST. The GOST code
+needs the OpenSSL ENGINE API, and OpenSSL 4.0 removed it, so the build
+then fails on implicit declarations of EVP_PKEY_asn1_find_str.
+
+We still cannot run the test, but we can check that the API the GOST
+code calls is present at all.
+
+Upstream-Status: Pending
+Signed-off-by: Alper Ak <alperyasinak1@gmail.com>
+---
+ configure.ac | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/configure.ac
++++ b/configure.ac
+@@ -1295,7 +1295,9 @@
+ [eval "ac_cv_c_gost_works=maybe"])
+ CFLAGS="$BAKCFLAGS"
+ else
+-eval "ac_cv_c_gost_works=maybe"
++AC_CHECK_FUNC([EVP_PKEY_asn1_find_str],
++ [eval "ac_cv_c_gost_works=maybe"],
++ [eval "ac_cv_c_gost_works=no"])
+ fi
+ AC_MSG_RESULT($ac_cv_c_gost_works)
+ ])dnl
@@ -10,6 +10,7 @@ LICENSE = "BSD-3-Clause"
LIC_FILES_CHKSUM = "file://LICENSE;md5=5308494bc0590c0cb036afd781d78f06"
SRC_URI = "git://github.com/NLnetLabs/unbound.git;protocol=https;branch=master;tag=release-${PV} \
+ file://0001-configure-do-not-assume-GOST-works-when-cross-compili.patch \
file://run-ptest \
"
do_compile fails with: keyraw.c:158:16: error: implicit declaration of function 'EVP_PKEY_asn1_find_str' The GOST code needs the OpenSSL ENGINE API, which 4.0 removed. configure cannot run its GOST test when cross compiling and answers "maybe", which enables GOST anyway. Make it check that the API is there first. Nothing is lost by this and no layer ships a GOST engine, so the lookup already returned 0 at runtime. gost-engine has not been ported to providers yet [1]. [1] https://github.com/gost-engine/engine/issues/496 Signed-off-by: Alper Ak <alperyasinak1@gmail.com> --- ...assume-GOST-works-when-cross-compili.patch | 31 +++++++++++++++++++ .../recipes-support/unbound/unbound_1.26.0.bb | 1 + 2 files changed, 32 insertions(+) create mode 100644 meta-networking/recipes-support/unbound/unbound/0001-configure-do-not-assume-GOST-works-when-cross-compili.patch