configure: Avoid error messages about missing *-config-*.h files
When compiling with --disable-system there is a harmless yet still
annoying error message at the end of the "configure" step:
sed: can't read *-config-devices.h: No such file or directory
When only building the tools or docs, without any emulator at all,
there is even an additional message about missing *-config-target.h
files.
Fix it by checking whether any of these files are available before
using them.
Fixes: e0447a834d
("configure: Poison all current target-specific #defines")
Reported-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210519113840.298174-1-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -6503,10 +6503,14 @@ fi
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# Create list of config switches that should be poisoned in common code...
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# but filter out CONFIG_TCG and CONFIG_USER_ONLY which are special.
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sed -n -e '/CONFIG_TCG/d' -e '/CONFIG_USER_ONLY/d' \
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-e '/^#define / { s///; s/ .*//; s/^/#pragma GCC poison /p; }' \
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*-config-devices.h *-config-target.h | \
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sort -u > config-poison.h
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target_configs_h=$(ls *-config-devices.h *-config-target.h 2>/dev/null)
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if test -n "$target_configs_h" ; then
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sed -n -e '/CONFIG_TCG/d' -e '/CONFIG_USER_ONLY/d' \
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-e '/^#define / { s///; s/ .*//; s/^/#pragma GCC poison /p; }' \
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$target_configs_h | sort -u > config-poison.h
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else
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:> config-poison.h
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fi
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# Save the configure command line for later reuse.
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cat <<EOD >config.status
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