# HG changeset patch
# User Rob Landley <rob@landley.net>
# Date 1408298420 18000
# Node ID 263bb9ff965718140060b3fb2798d759ad5ec7df
# Parent  0f61292eab70068ea1e11eace7f12f46e2a012ce
Fix parallel (NOP) host-tools.sh calls.

The "build hello world" smoketest creates and deletes an output file. It used
to produce this temp file in build/host, but that changed the directory
timestamp so record-commands thought something changed and rebuilt its
symlink list, screwing up parallel builds that were using that.

The first fix moved the tempfile to host-temp, but since every host-tools
build deletes and recreates that directory, parallel builds still screwed
each other up.

The new fix is -o /dev/null so the compile still returns an error code, but
the temp file is disposed of. Multiple processes writing to /dev/null in
parallel shouldn't cause a problem.

diff -r 0f61292eab70 -r 263bb9ff9657 host-tools.sh
--- a/host-tools.sh	Sun Aug 17 00:06:04 2014 -0500
+++ b/host-tools.sh	Sun Aug 17 13:00:20 2014 -0500
@@ -64,8 +64,7 @@
 
 if [ "$BUILD_STATIC" != none ]
 then
-  $CC "$SOURCES/toys/hello.c" --static -o "$WORK/hello-$$" &&
-  rm "$WORK/hello-$$"
+  $CC "$SOURCES/toys/hello.c" --static -o /dev/null
 
   if [ $? -ne 0 ]
   then