sstate.bbclass: Make sure we don't have an empty fixmepath file

Jason Wessel noticed that a package without any fixmepath entries would
generate a sed warning about no input files.  This patch resolves that
by ensuring that an empty fixmepath file never gets written into the
sstate archive.  Also we avoid a second message by only doing xargs if
we got input.

(From OE-Core rev: 326563d5a897ae2dba7cfd8d73579d3d979d72c8)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 12 insertions, 5 deletions

diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
index ccef4a9e39..ae019379bd 100644
--- a/meta/classes/sstate.bbclass
+++ b/meta/classes/sstate.bbclass
@@ -330,20 +330,27 @@ def sstate_hardcode_path(d):
                 sstate_grep_cmd = "grep -l -e '%s'" % (staging_host)
                 sstate_sed_cmd = "sed -i -e 's:%s:FIXMESTAGINGDIRHOST:g'" % (staging_host)
         
+        fixmefn =  sstate_builddir + "fixmepath"
+
         sstate_scan_cmd = d.getVar('SSTATE_SCAN_CMD', True)
-        sstate_filelist_cmd = "tee %sfixmepath" % (sstate_builddir)
+        sstate_filelist_cmd = "tee %s" % (fixmefn)
 
         # fixmepath file needs relative paths, drop sstate_builddir prefix
-        sstate_filelist_relative_cmd = "sed -i -e 's:^%s::g' %sfixmepath" % (sstate_builddir, sstate_builddir)
+        sstate_filelist_relative_cmd = "sed -i -e 's:^%s::g' %s" % (sstate_builddir, fixmefn)
 
         # Limit the fixpaths and sed operations based on the initial grep search
         # This has the side effect of making sure the vfs cache is hot
-        sstate_hardcode_cmd = "%s | xargs %s | %s | xargs %s" % (sstate_scan_cmd, sstate_grep_cmd, sstate_filelist_cmd, sstate_sed_cmd)
+        sstate_hardcode_cmd = "%s | xargs %s | %s | xargs --no-run-if-empty %s" % (sstate_scan_cmd, sstate_grep_cmd, sstate_filelist_cmd, sstate_sed_cmd)
 
         print "Removing hardcoded paths from sstate package: '%s'" % (sstate_hardcode_cmd)
         os.system(sstate_hardcode_cmd)
-        print "Replacing absolute paths in fixmepath file: '%s'" % (sstate_filelist_relative_cmd)
-        os.system(sstate_filelist_relative_cmd)
+
+        # If the fixmefn is empty, remove it..
+        if os.stat(fixmefn).st_size == 0:
+                os.remove(fixmefn)
+        else:
+                print "Replacing absolute paths in fixmepath file: '%s'" % (sstate_filelist_relative_cmd)
+                os.system(sstate_filelist_relative_cmd)
 
 def sstate_package(ss, d):
     import oe.path