Move generation of config-host.h to Makefile from configure
Use timestamp based appreach to avoid not needed recompilation.
Add it to rules.mak
Many thanks to Paolo Bonzini for helpding the design, and the debug.
Patchworks-ID: 35190
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/rules.mak b/rules.mak
index b380903..ca95351 100644
--- a/rules.mak
+++ b/rules.mak
@@ -35,3 +35,12 @@
cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
>/dev/null 2>&1 && echo OK), $2, $3)
+
+# Generate timestamp files for .h include files
+
+%.h: %.h-timestamp
+ @test -f $@ || cp $< $@
+
+%.h-timestamp: %.mak
+ $(call quiet-command, $(SRC_PATH)/create_config < $< > $@, " GEN $*.h")
+ @cmp $@ $*.h >/dev/null 2>&1 || cp $@ $*.h
