Don't distribute generated version.hxx and don't clean version

1 files changed, 7 insertions, 3 deletions

diff --git a/buildfile b/buildfile
index dcde869..82116f9 100644
--- a/buildfile
+++ b/buildfile
@@ -11,8 +11,13 @@ sh{*}: install = bin/
     sh{msvc-** -msvc-common/msvc-filter*}                   \
     doc{INSTALL LICENSE NEWS README version} file{manifest}
 
-doc{version}: file{manifest} # Generated by the version module.
-doc{version}: dist = true
+# The version file is auto-generated (by the version module) from manifest.
+# Include it in distribution and don't remove when cleaning in src (so that
+# clean results in a state identical to distributed).
+#
+doc{version}: file{manifest}
+doc{version}: dist  = true
+doc{version}: clean = ($src_root != $out_root)
 
 msvc-common/:
 {
@@ -21,7 +26,6 @@ msvc-common/:
   exe{msvc-filter}: {hxx ixx txx cxx}{* -version} hxx{version} $libs
 
   hxx{version}: in{version} $src_root/file{manifest}
-  hxx{version}: dist = true
 }
 
 # Don't install INSTALL file.