build: setup header generator in its own include/Makefile

Also move helper files to the new `build-aux' directory.

.gitignore

@@ -37,11 +37,12 @@ src/tests/test-qcdm-serial-port
 src/tests/test-at-serial-port
 src/tests/test-sms
 policy/org.freedesktop.modem-manager.policy
-include/
 
 libqcdm/tests/test-qcdm
 libwmc/tests/test-wmc
 
+include/ModemManager.h
+
 po/Makefile.in.in
 po/POTFILES
 po/stamp-it

Makefile.am

@@ -20,7 +20,7 @@ all: $(GENERATED_FILES)
 CLEANFILES = $(GENERATED_FILES)
 endif
 
-SUBDIRS = . marshallers libqcdm libwmc src plugins introspection po test
+SUBDIRS = . marshallers build-aux include libqcdm libwmc src plugins introspection po test
 
 if WITH_POLKIT
 SUBDIRS += policy
@@ -44,14 +44,6 @@ dbusactivationdir = $(datadir)/dbus-1/system-services
 dbusactivation_in_files = org.freedesktop.ModemManager.service.in
 dbusactivation_DATA = $(dbusactivation_in_files:.service.in=.service)
 
-includedir = @includedir@/mm
-
-include_HEADERS = include/ModemManager.h
-
-include/ModemManager.h: $(XMLS) introspection/all.xml header-generator.xsl
-	@install -d include
-	$(XSLTPROC) $(top_srcdir)/header-generator.xsl $(top_srcdir)/introspection/all.xml > $@
-
 %service: %service.in
 	$(edit) $< >$@
 
@@ -84,7 +76,6 @@ DISTCLEANFILES = \
 
 EXTRA_DIST = \
 	doc-generator.xsl \
-	header-generator.xsl \
 	$(dbusactivation_in_files) \
 	$(INTLTOOL_FILES) \
 	$(dbusservice_file_polkit) \

build-aux/Makefile.am

@@ -0,0 +1,3 @@
+
+EXTRA_DIST = \
+	header-generator.xsl

configure.ac

@@ -146,6 +146,8 @@ AM_CONDITIONAL(WMC_STANDALONE, test "yes" = "no")
 AC_CONFIG_FILES([
 Makefile
 marshallers/Makefile
+include/Makefile
+build-aux/Makefile
 libqcdm/Makefile
 libqcdm/src/Makefile
 libqcdm/tests/Makefile

include/Makefile.am

@@ -0,0 +1,14 @@
+XSLTPROC = xsltproc --xinclude --nonet
+
+XMLS = $(wildcard $(top_srcdir)/introspection/*.xml)
+
+includedir = @includedir@/mm
+
+include_HEADERS = \
+	ModemManager.h
+
+ModemManager.h: $(XMLS) $(top_srcdir)/introspection/all.xml $(top_srcdir)/build-aux/header-generator.xsl
+	$(XSLTPROC) $(top_srcdir)/build-aux/header-generator.xsl $(top_srcdir)/introspection/all.xml > $@
+
+CLEANFILES = \
+	ModemManager.h