virtio-pci: error out when both legacy and modern modes are disabled

[mirror_qemu.git] / configure

diff --git a/configure b/configure
index 4b808f9d17f640347bb8ffd4033461464eb0b8bb..5a9bda18b5cfd3ab67b5f06c9f2558c827b309b1 100755 (executable)
--- a/configure
+++ b/configure
@@ -4191,6 +4191,18 @@ if compile_prog "" "" ; then
     posix_madvise=yes
 fi
 
+##########################################
+# check if we have posix_syslog
+
+posix_syslog=no
+cat > $TMPC << EOF
+#include <syslog.h>
+int main(void) { openlog("qemu", LOG_PID, LOG_DAEMON); syslog(LOG_INFO, "configure"); return 0; }
+EOF
+if compile_prog "" "" ; then
+    posix_syslog=yes
+fi
+
 ##########################################
 # check if trace backend exists
 
@@ -5468,6 +5480,13 @@ if have_backend "ftrace"; then
     feature_not_found "ftrace(trace backend)" "ftrace requires Linux"
   fi
 fi
+if have_backend "syslog"; then
+  if test "$posix_syslog" = "yes" ; then
+    echo "CONFIG_TRACE_SYSLOG=y" >> $config_host_mak
+  else
+    feature_not_found "syslog(trace backend)" "syslog not available"
+  fi
+fi
 echo "CONFIG_TRACE_FILE=$trace_file" >> $config_host_mak
 
 if test "$rdma" = "yes" ; then