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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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configure
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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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