This fixes a potential pollution by the build host and build error
when yacc isn't installed on the build host:

 | ../../libtasn1-4.9/build-aux/ylwrap: line 175: yacc: command not found
 | Makefile:1116: recipe for target 'ASN1.c' failed
 | make[3]: *** [ASN1.c] Error 127

Signed-off-by: Patrick Ohly <redacted>
---
 meta/recipes-support/gnutls/libtasn1_4.9.bb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/meta/recipes-support/gnutls/libtasn1_4.9.bb b/meta/recipes-support/gnutls/libtasn1_4.9.bb
index b8ff9eaf7a9..3da5d4bcc56 100644
--- a/meta/recipes-support/gnutls/libtasn1_4.9.bb
+++ b/meta/recipes-support/gnutls/libtasn1_4.9.bb

@@ -16,6 +16,8 @@ SRC_URI = "${GNU_MIRROR}/libtasn1/libtasn1-${PV}.tar.gz \
            file://0004-tools-eliminated-compiler-warnings.patch \
            "
 
+DEPENDS = "bison-native"
+
 SRC_URI[md5sum] = "3018d0f466a32b66dde41bb122e6cab6"
 SRC_URI[sha256sum] = "4f6f7a8fd691ac2b8307c8ca365bad711db607d4ad5966f6938a9d2ecd65c920"
 

-- 
2.11.0