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>

1 files changed, 1 insertions, 19 deletions

diff --git a/configure b/configure
index ed5d7d6da0..fd3cb240cf 100755
--- a/configure
+++ b/configure
@@ -1800,13 +1800,8 @@ echo "-> Your SDL version is too old - please upgrade to have SDL support"
 fi
 
 config_host_mak="config-host.mak"
-config_host_h="config-host.h"
 config_host_ld="config-host.ld"
 
-#echo "Creating $config_host_mak and $config_host_h"
-
-test -f $config_host_h && mv $config_host_h ${config_host_h}~
-
 echo "# Automatically generated by configure - do not modify" > $config_host_mak
 printf "# Configured with:" >> $config_host_mak
 printf " '%s'" "$0" "$@" >> $config_host_mak
@@ -2064,18 +2059,6 @@ echo "LIBS+=$LIBS" >> $config_host_mak
 echo "LIBS_TOOLS+=$libs_tools" >> $config_host_mak
 echo "EXESUF=$EXESUF" >> $config_host_mak
 
-echo "/* Automatically generated by configure - do not modify */" > $config_host_h
-
-/bin/sh $source_path/create_config < $config_host_mak >> $config_host_h
-
-if test -f ${config_host_h}~ ; then
-  if cmp -s $config_host_h ${config_host_h}~ ; then
-    mv ${config_host_h}~ $config_host_h
-  else
-    rm ${config_host_h}~
-  fi
-fi
-
 # generate list of library paths for linker script
 
 $ld --verbose -v 2> /dev/null | grep SEARCH_DIR > ${config_host_ld}
@@ -2474,8 +2457,7 @@ fi
 echo "LDFLAGS+=$ldflags" >> $config_mak
 echo "QEMU_CFLAGS+=$cflags" >> $config_mak
 
-echo "/* Automatically generated by configure - do not modify */" > $config_h
-echo "#include \"../config-host.h\"" >> $config_h
+echo "#include \"../config-host.h\"" > $config_h
 
 /bin/sh $source_path/create_config < $config_mak >> $config_h