Find valac-* binaries, work-around fast-vapi issues with valac 0.36.0

CMakeLists.txt

@@ -67,6 +67,11 @@ set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 
 find_package(Vala 0.30 REQUIRED)
+if(VALA_VERSION VERSION_EQUAL "0.36.0")
+    # Due to a bug on 0.36.0, we need to disable FAST_VAPI
+    set(DISABLE_FAST_VAPI yes)
+endif()
+
 include(${VALA_USE_FILE})
 include(MultiFind)
 include(GlibCompileResourcesSupport)

cmake/FindVala.cmake

@@ -47,7 +47,7 @@
 # Search for the valac executable in the usual system paths
 # Some distributions rename the valac to contain the major.minor in the binary name
 find_package(GObject REQUIRED)
-find_program(VALA_EXECUTABLE NAMES valac valac-0.20 valac-0.18 valac-0.16 valac-0.14 valac-0.12 valac-0.10)
+find_program(VALA_EXECUTABLE NAMES valac valac-0.36 valac-0.34 valac-0.32 valac-0.30)
 mark_as_advanced(VALA_EXECUTABLE)
 
 # Determine the valac version

configure

@@ -32,6 +32,8 @@ Options:
   --valac=VALAC              Use VALAC as Vala pre-compiler. [$VALA_EXECUTABLE]
   --valac-flags=FLAGS        Use FLAGS when invoking the vala compiler
   --disable-fast-vapi        Disable the usage of Vala compilers fast-vapi feature.
+                             fast-vapi mode is slower when doing clean builds, but
+                             faster when doing incremental builds (during development)
 
   --fetch-only               Only fetch the files required to run ./configure without
                              network access later and exit