diff -r 000000000000 -r 6474c204b198 config/baseconfig.mk
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/config/baseconfig.mk	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,56 @@
+# This file is normally included by autoconf.mk, but it is also used
+# directly in python/mozbuild/mozbuild/base.py for gmake validation.
+# We thus use INCLUDED_AUTOCONF_MK to enable/disable some parts depending
+# whether a normal build is happening or whether the check is running.
+includedir := $(includedir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+idldir = $(datadir)/idl/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+installdir = $(libdir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+sdkdir = $(libdir)/$(MOZ_APP_NAME)-devel-$(MOZ_APP_VERSION)
+ifndef TOP_DIST
+TOP_DIST = dist
+endif
+ifneq (,$(filter /%,$(TOP_DIST)))
+DIST = $(TOP_DIST)
+else
+ifeq (.,$(DEPTH))
+DIST = $(TOP_DIST)
+else
+DIST = $(DEPTH)/$(TOP_DIST)
+endif
+endif
+
+# We do magic with OBJ_SUFFIX in config.mk, the following ensures we don't
+# manually use it before config.mk inclusion
+_OBJ_SUFFIX := $(OBJ_SUFFIX)
+OBJ_SUFFIX = $(error config/config.mk needs to be included before using OBJ_SUFFIX)
+
+ifeq ($(HOST_OS_ARCH),WINNT)
+# We only support building with pymake or a non-msys gnu make version
+# strictly above 4.0.
+ifndef .PYMAKE
+ifeq (a,$(firstword a$(subst /, ,$(abspath .))))
+$(error MSYS make is not supported)
+endif
+# 4.0- happens to be greater than 4.0, lower than the mozmake version,
+# and lower than 4.0.1 or 4.1, whatever next version of gnu make will
+# be released.
+ifneq (4.0-,$(firstword $(sort 4.0- $(MAKE_VERSION))))
+$(error Make version too old. Only versions strictly greater than 4.0 are supported.)
+endif
+endif
+ifdef INCLUDED_AUTOCONF_MK
+ifeq (a,$(firstword a$(subst /, ,$(srcdir))))
+$(error MSYS-style srcdir are not supported for Windows builds.)
+endif
+endif
+endif # WINNT
+
+ifdef .PYMAKE
+include_deps = $(eval $(if $(2),,-)includedeps $(1))
+else
+include_deps = $(eval $(if $(2),,-)include $(1))
+endif
+
+ifndef INCLUDED_AUTOCONF_MK
+default::
+endif