build: rebuild idl if the pidl compiler is changed

[kai/samba.git] / librpc / build_idl.sh

diff --git a/librpc/build_idl.sh b/librpc/build_idl.sh
index afab91044bebd535fe29b90bdfc34d9f3ac4044c..e028bc68311dd036fd724782e1cfa3ce2fd9d92c 100755 (executable)
--- a/librpc/build_idl.sh
+++ b/librpc/build_idl.sh
@@ -15,17 +15,28 @@ cd ${srcdir}
 
 [ -d $PIDL_OUTPUTDIR ] || mkdir -p $PIDL_OUTPUTDIR || exit 1
 
-PIDL="$PIDL $ARGS"
+PIDL_DIR=`dirname $PIDL`
+PIDL_CMD="$PIDL $ARGS"
 
 if [ $FULL = 1 ]; then
        echo "Rebuilding all idl files"
-       $PIDL $IDL_FILES || exit 1
+       $PIDL_CMD $IDL_FILES || exit 1
        exit 0
 fi
 
 ##
-## Find newer files rather than rebuild all of them
+## Find newer files rather than rebuild all of them. Also handle the case
+## where the pidl compiler itself is newer.
 ##
+PIDL_NEWEST=`find $PIDL_DIR -type f -printf "%p\0%T@\n" \
+       | perl -e '$ts_newest = 0;
+                  while (<STDIN>) {
+                          ($f, $ts) = split(/\0/);
+                          next if ($ts <= $ts_newest);
+                          $ts_newest = $ts;
+                          $f_newest = $f;
+                  }
+                  print $f_newest'` || exit 1
 
 list=""
 for f in ${IDL_FILES}; do
@@ -42,6 +53,10 @@ for f in ${IDL_FILES}; do
                list="$list $f"
                break
            }
+           test "`find $PIDL_NEWEST -newer $PIDL_OUTPUTDIR/$o`" != "" && {
+               list="$list $f"
+               break
+           }
        done
 done
 
@@ -50,8 +65,8 @@ done
 ##
 
 if [ "x$list" != x ]; then
-       # echo "${PIDL} ${list}"
-       $PIDL $list || exit 1
+       # echo "${PIDL_CMD} ${list}"
+       $PIDL_CMD $list || exit 1
 fi
 
 cd ${oldpwd}