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configure: Add config.status to recreate the current configuration

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The latest configure invocation was saved in config-host.mak and could
be extracted from that file to recreate the configuration.

Now it is saved in a new file config.status which can be directly executed
to recreate the configuration. The file name and the comments were copied
from GNU autoconf.

Makefile now uses config.status, but also includes transitional code
for the old mechanism.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Fam Zheng <famz@redhat.com>
This commit is contained in:
Stefan Weil 2013-10-20 18:39:21 +02:00
parent 40b9cc5e40
commit bdf523e692
2 changed files with 21 additions and 3 deletions
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9
Makefile
View File

@ -28,7 +28,14 @@ CONFIG_ALL=y
include $(SRC_PATH)/rules.mak
config-host.mak: $(SRC_PATH)/configure
@echo $@ is out-of-date, running configure
@sed -n "/.*Configured with/s/[^:]*: //p" $@ | sh
@# TODO: The next lines include code which supports a smooth
@# transition from old configurations without config.status.
@# This code can be removed after QEMU 1.7.
@if test -x config.status; then \
./config.status; \
else \
sed -n "/.*Configured with/s/[^:]*: //p" $@ | sh; \
fi
else
config-host.mak:
ifneq ($(filter-out %clean,$(MAKECMDGOALS)),$(if $(MAKECMDGOALS),,fail))

15
configure vendored
View File

@ -27,6 +27,19 @@ printf " '%s'" "$0" "$@" >> config.log
echo >> config.log
echo "#" >> config.log
# Save the configure command line for later reuse.
cat <<EOD >config.status
#!/bin/sh
# Generated by configure.
# Run this file to recreate the current configuration.
# Compiler output produced by configure, useful for debugging
# configure, is in config.log if it exists.
EOD
printf "exec" >>config.status
printf " '%s'" "$0" "$@" >>config.status
echo >>config.status
chmod +x config.status
error_exit() {
echo
echo "ERROR: $1"
@ -3757,8 +3770,6 @@ config_host_mak="config-host.mak"
echo "# Automatically generated by configure - do not modify" >config-all-disas.mak
echo "# Automatically generated by configure - do not modify" > $config_host_mak
printf "# Configured with:" >> $config_host_mak
printf " '%s'" "$0" "$@" >> $config_host_mak
echo >> $config_host_mak
echo all: >> $config_host_mak