vala: add vala/valac wrapper

vala/valac can use gir and vapi data files installed by other packages,
but since these are normally installed to staging and host-vala looks
for them in the host directory (logically) this leads to failure.
So wrap them to call the real tool and add this information via
command-line parameters to them.

This is required for vala-in-vala bindings (vapi).

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/vala/vala-wrapper

@@ -0,0 +1,2 @@
+#!/bin/sh
+$0-@VALA_VERSION@ --vapidir=${STAGING_DIR}/usr/share/vala/vapi --girdir=${STAGING_DIR}/usr/share/gir-1.0 $@

package/vala/vala.mk

@@ -16,4 +16,17 @@ HOST_VALA_DEPENDENCIES = host-bison host-flex host-libglib2
 # available".
 HOST_VALA_CONF_ENV = ac_cv_path_XSLTPROC=:
 
+# We wrap vala & valac to point to the proper gir and vapi data dirs
+# Otherwise we'll get host directory data which isn't enough
+define HOST_VALA_INSTALL_WRAPPER
+	$(INSTALL) -D -m 0755 package/vala/vala-wrapper \
+		$(HOST_DIR)/usr/bin/vala
+	$(INSTALL) -D -m 0755 package/vala/vala-wrapper \
+		$(HOST_DIR)/usr/bin/valac
+	$(SED) 's,@VALA_VERSION@,$(VALA_VERSION_MAJOR),' \
+		$(HOST_DIR)/usr/bin/vala \
+		$(HOST_DIR)/usr/bin/valac
+endef
+HOST_VALA_POST_INSTALL_HOOKS += HOST_VALA_INSTALL_WRAPPER
+
 $(eval $(host-autotools-package))