configure: Fix compiler warning in config.log (macro redefined)
warning: "_GNU_SOURCE" redefined The macro is already defined on the command line. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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configure
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@ -2251,7 +2251,6 @@ fi
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# signalfd probe
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# signalfd probe
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signalfd="no"
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signalfd="no"
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cat > $TMPC << EOF
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cat > $TMPC << EOF
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#define _GNU_SOURCE
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#include <unistd.h>
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#include <unistd.h>
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#include <sys/syscall.h>
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#include <sys/syscall.h>
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#include <signal.h>
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#include <signal.h>
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