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https://gitlab.com/qemu-project/qemu
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f62bbee55d
Some people building QEMU use VPATH builds where the source directory is on a read-only volume. In such a case 'scripts/git-submodules.sh update' will always fail and users are required to run it manually themselves on their original writable source directory. While this is already supported, it is nice to give users a command line flag to configure to permanently disable automatic submodule updates, as it means they won't get hard to diagnose failures from git-submodules.sh at an arbitrary later date. This patch thus introduces a flag '--disable-git-update' which will prevent 'make' from ever running 'scripts/git-submodules.sh update'. It will still run the 'status' command to determine if a submodule update is needed, but when it does this it'll simply stop and print a message instructing the developer what todo. eg $ ./configure --target-list=x86_64-softmmu --disable-git-update ...snip... $ make GEN config-host.h GEN trace/generated-tcg-tracers.h GEN trace/generated-helpers-wrappers.h GEN trace/generated-helpers.h GEN trace/generated-helpers.c GEN module_block.h GIT submodule checkout is out of date. Please run scripts/git-submodule.sh update ui/keycodemapdb from the source directory checkout /home/berrange/src/virt/qemu make: *** [Makefile:31: git-submodule-update] Error 1 Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
66 lines
1.5 KiB
Bash
Executable file
66 lines
1.5 KiB
Bash
Executable file
#!/bin/sh
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#
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# This code is licensed under the GPL version 2 or later. See
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# the COPYING file in the top-level directory.
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substat=".git-submodule-status"
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command=$1
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shift
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modules="$@"
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test -z "$GIT" && GIT=git
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error() {
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echo "$0: $*"
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echo
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echo "Unable to automatically checkout GIT submodules '$modules'."
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echo "If you require use of an alternative GIT binary (for example to"
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echo "enable use of a transparent proxy), then please specify it by"
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echo "running configure by with the '--with-git' argument. e.g."
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echo
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echo " $ ./configure --with-git='tsocks git'"
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echo
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echo "Alternatively you may disable automatic GIT submodule checkout"
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echo "with:"
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echo
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echo " $ ./configure --disable-git-update'"
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echo
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echo "and then manually update submodules prior to running make, with:"
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echo
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echo " $ scripts/git-sbumodule.sh update $modules"
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echo
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exit 1
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}
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if test -z "$modules"
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then
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test -e $substat || touch $substat
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exit 0
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fi
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if ! test -e ".git"
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then
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echo "$0: unexpectedly called with submodules but no git checkout exists"
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exit 1
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fi
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case "$command" in
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status)
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test -f "$substat" || exit 1
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CURSTATUS=`$GIT submodule status $modules`
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OLDSTATUS=`cat $substat`
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test "$CURSTATUS" = "$OLDSTATUS"
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exit $?
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;;
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update)
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$GIT submodule update --init $modules 1>/dev/null
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test $? -ne 0 && error "failed to update modules"
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$GIT submodule status $modules > "${substat}"
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test $? -ne 0 && error "failed to save git submodule status" >&2
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;;
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esac
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exit 0
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