configure: add SCHED_IDLE check

[fio.git] / configure

diff --git a/configure b/configure
index 7352bf1cd1ef1a84a92e0021325178fd7987c51a..995b5df231e9129b9dceace6b867c7fb717c63be 100755 (executable)
--- a/configure
+++ b/configure
@@ -30,7 +30,8 @@ rm -rf $config_host_mak
 rm -rf $config_host_h
 
 # Default CFLAGS
-EXTFLAGS="-include config-host.h -D_GNU_SOURCE"
+CFLAGS="-D_GNU_SOURCE"
+EXTFLAGS="-include config-host.h"
 
 # Print a helpful header at the top of config.log
 echo "# FIO configure log $(date)" >> config.log
@@ -121,18 +122,33 @@ cpu=""
 
 cc="${CC-${cross_prefix}gcc}"
 
+show_help="no"
+exit_val=0
+
 # parse options
 for opt do
   optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
   case "$opt" in
   --cc=*) CC="$optarg"
   ;;
+  --extra-cflags=*) CFLAGS="$CFLAGS $optarg"
+  ;;
+  --help)
+  show_help="yes"
+  ;;
   *)
   echo "Bad option $opt"
-  exit 1
+  show_help="yes"
+  exit_val=1
   esac
 done
 
+if test "$show_help" = "yes" ; then
+  echo "--cc=                  Specify compiler to use"
+  echo "--extra-cflags=        Specify extra CFLAGS to pass to compiler"
+  exit $exit_val
+fi
+
 if check_define __linux__ ; then
   targetos="Linux"
 elif check_define __OpenBSD__ ; then
@@ -182,7 +198,11 @@ CYGWIN*)
   output_sym "CONFIG_RUSAGE_THREAD"
   output_sym "CONFIG_WINDOWSAIO"
   output_sym "CONFIG_FDATASYNC"
+  output_sym "CONFIG_GETTIMEOFDAY"
+  output_sym "CONFIG_CLOCK_GETTIME"
+  output_sym "CONFIG_SCHED_IDLE"
   echo "CC=$CC" >> $config_host_mak
+  echo "EXTFLAGS=$CFLAGS -include config-host.h -D_GNU_SOURCE" >> $config_host_mak
   exit 0
 esac
 
@@ -825,6 +845,22 @@ if compile_prog "" "" "RUSAGE_THREAD"; then
 fi
 echo "RUSAGE_THREAD                 $rusage_thread"
 
+##########################################
+# Check whether we have SCHED_IDLE
+sched_idle="no"
+cat > $TMPC << EOF
+#include <sched.h>
+int main(int argc, char **argv)
+{
+  struct sched_param p;
+  return sched_setscheduler(0, SCHED_IDLE, &p);
+}
+EOF
+if compile_prog "" "" "SCHED_IDLE"; then
+  sched_idle="yes"
+fi
+echo "SCHED_IDLE                    $sched_idle"
+
 #############################################################################
 
 echo "# Automatically generated by configure - do not modify" > $config_host_mak
@@ -928,7 +964,10 @@ fi
 if test "$rusage_thread" = "yes" ; then
   output_sym "CONFIG_RUSAGE_THREAD"
 fi
+if test "$sched_idle" = "yes" ; then
+  output_sym "CONFIG_SCHED_IDLE"
+fi
 
 echo "LIBS+=$LIBS" >> $config_host_mak
 echo "CC=$cc" >> $config_host_mak
-echo "EXTFLAGS=$EXTFLAGS" >> $config_host_mak
+echo "EXTFLAGS=$EXTFLAGS $CFLAGS" >> $config_host_mak