3 files changed, 16 insertions, 2 deletions

diff --git a/meta-oe/recipes-kernel/ktap/ktap-module_0.4.bb b/meta-oe/recipes-kernel/ktap/ktap-module_0.4.bb
index 12167ea16..ce6885cbb 100644
--- a/meta-oe/recipes-kernel/ktap/ktap-module_0.4.bb
+++ b/meta-oe/recipes-kernel/ktap/ktap-module_0.4.bb
@@ -6,8 +6,11 @@ DESCRIPTION = "KTAP is a scripting dynamic tracing tool for Linux"
 
 inherit module
 
+# Available package configs: ffi (only supported on x86_64)
+PACKAGECONFIG ?= ""
+
 # Only build the module
-MAKE_TARGETS = "mod"
+MAKE_TARGETS = "${@base_contains('PACKAGECONFIG', 'ffi', 'FFI=1', '', d)} mod"
 
 # Kernel module packages MUST begin with 'kernel-module-', otherwise
 # multilib image generation can fail.
diff --git a/meta-oe/recipes-kernel/ktap/ktap.inc b/meta-oe/recipes-kernel/ktap/ktap.inc
index 7e6045376..93a4e2ca3 100644
--- a/meta-oe/recipes-kernel/ktap/ktap.inc
+++ b/meta-oe/recipes-kernel/ktap/ktap.inc
@@ -9,3 +9,5 @@ SRC_URI = "git://github.com/ktap/ktap.git"
 
 S = "${WORKDIR}/git"
 
+# Package config is abused as a general compile time configuration tool.
+PACKAGECONFIG[ffi] = ""
diff --git a/meta-oe/recipes-kernel/ktap/ktap_0.4.bb b/meta-oe/recipes-kernel/ktap/ktap_0.4.bb
index f5dd62f84..20f94d598 100644
--- a/meta-oe/recipes-kernel/ktap/ktap_0.4.bb
+++ b/meta-oe/recipes-kernel/ktap/ktap_0.4.bb
@@ -5,8 +5,17 @@ require ktap.inc
 SUMMARY = "KTAP is a scripting dynamic tracing tool for Linux"
 DEPENDS = "ktap-module"
 
+#Available package configs:
+# libelf - needed to resolve symbols in DSO and for sdt
+# ffi    - only supports x86_64 for now!. Needs to be enabled for ktap-module too.
+PACKAGECONFIG ?= "libelf"
+
+PACKAGECONFIG[libelf] = ",,elfutils"
+
 # Only build the userspace app
-EXTRA_OEMAKE = "ktap"
+EXTRA_OEMAKE = "${@base_contains('PACKAGECONFIG', 'libelf', '', 'NO_LIBELF=1', d)} \
+             ${@base_contains('PACKAGECONFIG', 'ffi', 'FFI=1', '', d)} \
+             ktap"
 
 do_install() {
     install -d ${D}${bindir}