From 022266566d7b87fe3aea0c7080f6374c7740b11c Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Fri, 7 May 2010 11:41:50 +0200
Subject: [PATCH] build: fixed pc file variable substitution

We should not substitute for the first use of each variable
declaration in the pkgconfig file
---
 buildtools/wafsamba/wafsamba.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/buildtools/wafsamba/wafsamba.py b/buildtools/wafsamba/wafsamba.py
index 2b53a9ceb6..96e95159b9 100644
--- a/buildtools/wafsamba/wafsamba.py
+++ b/buildtools/wafsamba/wafsamba.py
@@ -662,6 +662,7 @@ def subst_at_vars(task):
     # split on the vars
     a = re.split('(@\w+@)', s)
     out = []
+    done_var = {}
     back_sub = [ ('PREFIX', '${prefix}'), ('EXEC_PREFIX', '${exec_prefix}')]
     for v in a:
         if re.match('@\w+@', v):
@@ -676,7 +677,12 @@ def subst_at_vars(task):
             for (b, m) in back_sub:
                 s = task.env[b]
                 if s == v[0:len(s)]:
-                    v = m + v[len(s):]
+                    if not b in done_var:
+                        # we don't want to substitute the first usage
+                        done_var[b] = True
+                    else:
+                        v = m + v[len(s):]
+                    break
         out.append(v)
     contents = ''.join(out)
     f = open(tgt, 'w')
-- 
2.34.1