[OE-core] [PATCH] vala-stub: add a stub for vala-native

[Ross Burton]

Some packages have optional support for Vala but require vala.m4 to provide
VALA_PROG_VAPIGEN so that autoreconf works.

vala-stub provides a dummy VALA_PROG_VAPIGEN which doesn't do anything, so the
configure script runs and believes that vala isn't present.

Signed-off-by: Ross Burton <ross.burton at intel.com>
---
 meta/recipes-devtools/vala/files/vala.m4 |    2 ++
 meta/recipes-devtools/vala/vala-stub.bb  |   16 ++++++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 meta/recipes-devtools/vala/files/vala.m4
 create mode 100644 meta/recipes-devtools/vala/vala-stub.bb

diff --git a/meta/recipes-devtools/vala/files/vala.m4 b/meta/recipes-devtools/vala/files/vala.m4
new file mode 100644
index 0000000..1776c6d
--- /dev/null
+++ b/meta/recipes-devtools/vala/files/vala.m4
@@ -0,0 +1,2 @@
+# A stub defintion that does nothing
+AC_DEFUN([VALA_PROG_VAPIGEN],[])
diff --git a/meta/recipes-devtools/vala/vala-stub.bb b/meta/recipes-devtools/vala/vala-stub.bb
new file mode 100644
index 0000000..6d5ff08
--- /dev/null
+++ b/meta/recipes-devtools/vala/vala-stub.bb
@@ -0,0 +1,16 @@
+SUMMARY = "Stub vala.m4 for building without vala support"
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://vala.m4;md5=f38dd167c10adc458a1bcbc96443cdfa"
+PROVIDES = "vala"
+
+SRC_URI = "file://vala.m4"
+inherit allarch
+
+S = "${WORKDIR}"
+
+do_install() {
+	install -d ${D}${datadir}/aclocal
+	install -m 0644 ${WORKDIR}/vala.m4 ${D}${datadir}/aclocal/
+}
+
+BBCLASSEXTEND = "native"
-- 
1.7.10