From: Julian Ospald <hasufell@gentoo.org>
Date: Sun Feb  2 00:17:18 UTC 2014
Subject: gentoo specific

--- geary-0.5.1.tar.xz/src/CMakeLists.txt
+++ geary-0.5.1.tar.xz/src/CMakeLists.txt
@@ -399,12 +399,7 @@
 include(ValaPrecompile)
 
 # Vapigen
-find_program(VAPIGEN vapigen)
-if (VAPIGEN STREQUAL "VAPIGEN-NOTFOUND")
-    message(FATAL_ERROR "vapigen must be installed to build Geary.")
-else ()
-    message(STATUS "Found vapigen: " ${VAPIGEN})
-endif ()
+set(VAPIGEN $ENV{VAPIGEN})
 
 # Packages
 if (LIBMESSAGINGMENU_FOUND)
@@ -615,7 +610,7 @@
     WORKING_DIRECTORY
         ${CMAKE_SOURCE_DIR}/bindings/metadata
     COMMAND
-        vapigen --pkg=gio-2.0 --pkg=gtk+-3.0 --pkg=libsoup-2.4 --metadatadir=. --metadatadir=${WEBKITGTK_METADATA_DIR} --library=webkitgtk-3.0 --directory=${CMAKE_BINARY_DIR}/src ${WEBKITGTK_CUSTOM_VALA} `pkg-config --variable=girdir gobject-introspection-1.0`/WebKit-3.0.gir
+	$ENV{VAPIGEN} --pkg=gio-2.0 --pkg=gtk+-3.0 --pkg=libsoup-2.4 --metadatadir=. --metadatadir=${WEBKITGTK_METADATA_DIR} --library=webkitgtk-3.0 --directory=${CMAKE_BINARY_DIR}/src ${WEBKITGTK_CUSTOM_VALA} `pkg-config --variable=girdir gobject-introspection-1.0`/WebKit-3.0.gir
 )
 
 # Geary client app