rpcgen: After recent changes parallel builds failed

Parallel builds failed due to make file would overrun
xdrgen (internally xdrgen uses tempfiles to add License
header).

Seperate out header and source generation and add explicit
dependency to fix it.

Change-Id: Id20f548493540b0f17a2300f0775646f9f20789c
BUG: 1090807
Signed-off-by: Harshavardhana <harsha@harshavardhana.net>
Reviewed-on: http://review.gluster.org/7572
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

1 files changed, 47 insertions, 43 deletions

diff --git a/build-aux/xdrgen b/build-aux/xdrgen
index b5f33d37229..e826111b9cc 100755
--- a/build-aux/xdrgen
+++ b/build-aux/xdrgen
@@ -1,23 +1,9 @@
 #!/bin/bash
 
-_init ()
-{
-    xfile="$1";
-
-    cfile="${1%.x}.c";
-    hfile="${1%.x}.h";
-
-    tmp_cfile="$1.c";
-
-    tmp1_hfile="$1.h.tmp";
-    tmp1_cfile="$1.c.tmp";
-
-}
-
 append_licence_header ()
 {
-    src_file=$1;
-    dst_file=$2;
+    local src_file=$1;
+    local dst_file=$2;
 
     cat >$dst_file <<EOF
 /*
@@ -47,47 +33,65 @@ EOF
 
 }
 
-main ()
+gen_sources ()
 {
-    if [ $# -ne 1 ]; then
-        echo "wrong number of arguments given"
-        echo " $0 <XDR-definition-file>.x"
-        exit 1;
-    fi
+    local xfile="$1";
+
+    local cfile="${1%.x}.c";
+    local hfile="${1%.x}.h";
 
+    local tmp_cfile="$1.c.tmp";
+    local tmp_hfile="$1.h.tmp";
 
-    echo -n "writing the XDR routine file ($tmp_cfile) ...  ";
+    rm -f $cfile;
+    rpcgen -c -o $cfile $xfile;
+    append_licence_header $cfile $tmp_cfile;
+    mv $tmp_cfile $cfile;
+    # remove unwanted temporary files (if any)
     rm -f $tmp_cfile;
-    rpcgen -c -o $tmp_cfile $xfile;
+    echo "Generated $cfile"
+    return
+}
+
+gen_headers ()
+{
+    local xfile="$1";
+
+    local cfile="${1%.x}.c";
+    local hfile="${1%.x}.h";
 
-    echo "OK";
+    local tmp_cfile="$1.c.tmp";
+    local tmp_hfile="$1.h.tmp";
 
     # no need for a temporary file here as there are no changes from glusterfs
-    echo -n "writing the XDR header file ($hfile) ...  ";
     rm -f $hfile;
     rpcgen -h -o $hfile $xfile;
-
     # the '#ifdef' part of file should be fixed
     sed -i -e 's/-/_/g' $hfile;
-
-    echo "OK";
-
-    echo -n "writing licence header to the generated files ... ";
-    # Write header to temp file and append generated file
-    append_licence_header $hfile $tmp1_hfile;
-    append_licence_header $tmp_cfile $tmp1_cfile;
-    echo "OK"
-
+    # Gen header to temp file and append generated file
+    append_licence_header $hfile $tmp_hfile;
     # now move the destination file to actual original file
-    echo -n "updating existing files ... ";
-    mv $tmp1_hfile $hfile;
-    mv $tmp1_cfile $cfile;
+    mv $tmp_hfile $hfile;
+    rm -f $tmp_hfile;
+    echo "Generated $hfile";
+    return
+}
 
-    # remove unwanted temporary files (if any)
-    rm -f $tmp_cfile $tmp1_cfile $tmp1_hfile
+main ()
+{
+    if [ $# -ne 2 ]; then
+        echo "wrong number of arguments given"
+        echo " $0 [header|source] <XDR-definition-file>.x"
+        exit 1;
+    fi
 
-    echo "OK"
+    if [ $1 == "header" ]; then
+        gen_headers $2
+    fi
 
+    if [ $1 == "source" ]; then
+        gen_sources $2
+    fi
 }
 
-_init "$@" && main "$@";
+main "$@";