sched: Allow more than one running scheduler instance.

[paraslash.git] / autogen.sh

diff --git a/autogen.sh b/autogen.sh
index a047f7c4d9f0bc704ade2ed049118c0eb3e02f7f..ea38dbf7ac901be9265427f4f91748fcfafebc09 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,7 +1,18 @@
 #!/bin/sh
-echo preparing...
+# check if we have multiple processors/cores
+n=$(nproc 2>/dev/null)
+if [ -z "$n" ]; then
+       n=$(grep ^processor /proc/cpuinfo 2>/dev/null | wc -l)
+       [ $n -eq 0 ] && n=1
+fi
+# If we are compiling with distcc, try to guess a reasonable number
+# based on (a) the number of cores on this machine and (b) the number
+# of words in the DISTCC_HOSTS variable.
+d="$(echo $DISTCC_HOSTS | wc -w)"
+n=$(($n + 2 * $n * $d))
+echo preparing, parallel=$n...
 if test -f Makefile; then
-       make maintainer-clean > /dev/null
+       make maintainer-clean > /dev/null 2>&1
 fi
 aclocal -I . > /dev/null 2>&1
 autoconf
@@ -10,4 +21,4 @@ echo configuring...
 ./configure $@ > /dev/null
 echo compiling...
 make clean2 > /dev/null 2>&1
-make > /dev/null
+make -j $n > /dev/null