From 19a3c78db2cdd47cc38df41c014c30072c1ac461 Mon Sep 17 00:00:00 2001
From: Steven Knight <knight@baldmt.com>
Date: Tue, 10 Jun 2003 14:48:53 +0000
Subject: Fix use of SConf with SConscriptChdir().  (David Snopek, Christoph
 Wiedemann)

---
 src/CHANGES.txt           | 31 -------------------------------
 src/engine/SCons/SConf.py |  6 ++++++
 test/Configure.py         | 41 ++++++++++++++++++++++++++++++++++++-----
 3 files changed, 42 insertions(+), 36 deletions(-)

diff --git a/src/CHANGES.txt b/src/CHANGES.txt
index b4d409c..b86c2de 100644
--- a/src/CHANGES.txt
+++ b/src/CHANGES.txt
@@ -10,20 +10,6 @@
 
 RELEASE 0.15 - XXX
 
-  From Matt Balvin:
-
-  - Fix handling of library prefixes when the subdirectory matches
-    the prefix.
-
-  From Timothee Bessett:
-
-  - Add an M4 Builder.
-
-  From Charles Crain:
-
-  - Use '.lnk' as the suffix on the temporary file for linking long
-    command lines (necessary for the Phar Lap linkloc linker).
-
   From Steven Knight:
 
   - SCons now enforces (with an error) that construction variables
@@ -35,27 +21,10 @@ RELEASE 0.15 - XXX
   - Eliminate a dependency on the distutils.fancy_getopt module by
     copying and pasting its wrap_text() function directly.
 
-  - Make the Script.Options() subclass match the underlying base class
-    implementation.
-
-  From Steve Leblanc:
-
-  - Don't update the .sconsign files when run with -n.
-
   From David Snopek and Christoph Wiedemann
 
   - Fix use of the SConf subsystem with SConscriptChdir().
 
-  From Greg Spencer
-
-  - Check for the existence of MS Visual Studio on disk before using it,
-    to avoid getting fooled by leftover junk in the registry.
-
-  - Add support for MSVC++ .NET.
-
-  - Add support for MS Visual Studio project files (DSP, DSW,
-    SLN and VCPROJ files).
-
 
 
 RELEASE 0.14 - Wed, 21 May 2003 05:16:32 -0500
diff --git a/src/engine/SCons/SConf.py b/src/engine/SCons/SConf.py
index 1546fb1..d01ce7e 100644
--- a/src/engine/SCons/SConf.py
+++ b/src/engine/SCons/SConf.py
@@ -163,6 +163,11 @@ class SConf:
             sys.stdout = self.logstream
             oldStderr = sys.stderr
             sys.stderr = self.logstream
+
+        # the engine assumes the current path is the SConstruct directory ...
+        oldcwd = os.getcwd()
+        os.chdir(SConfFS.pathTop)
+
         self._setCache( nodes ) 
         ret = 1
 
@@ -190,6 +195,7 @@ class SConf:
                     # the node could not be built. we return 0 in this case
                     ret = 0
         finally:
+            os.chdir(oldcwd)
             if self.logstream != None:
                 # restore stdout / stderr
                 sys.stdout = oldStdout
diff --git a/test/Configure.py b/test/Configure.py
index 97333ab..eeb040d 100644
--- a/test/Configure.py
+++ b/test/Configure.py
@@ -27,6 +27,7 @@ __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
 import os
 import re
 import sys
+import shutil
 
 import TestCmd
 import TestSCons
@@ -64,7 +65,7 @@ def checkLog( test, logfile, numUpToDate, numCache ):
         test.fail_test( len( re.findall( "is up to date", log ) ) != numUpToDate )
         test.fail_test( len( re.findall( "\(cached\): Building \S+ failed in a previous run.", log ) ) != numCache )
     except:
-        #print "contents of log ", test.workpath(logfile), "\n", log
+        print "contents of log ", test.workpath(logfile), "\n", log
         raise 
 
 
@@ -218,10 +219,16 @@ Checking for C header no_std_c_header.h ... failed
     # 2.3 test that Configure calls in SConscript files work
     #     even if BuildDir is set
     reset()
-    
 
     test.subdir( 'sub' )
     test.write( 'SConstruct', """
+opts = Options()
+opts.Add('chdir')
+env = Environment(options=opts)
+if env['chdir'] == 'yes':
+  SConscriptChdir(1)
+else:
+  SConscriptChdir(0)
 BuildDir( 'build', '.' )
 SConscript( 'build/SConscript' )
 """)
@@ -233,7 +240,10 @@ env = Environment()
 import os
 env['ENV']['PATH'] = os.environ['PATH']
 conf = Configure( env )
-conf.CheckCHeader( 'math.h' )
+if not conf.CheckCHeader( 'math.h' ):
+  Exit(1)
+if conf.CheckCHeader( 'no_std_c_header.h' ):
+  Exit(1)
 env = conf.Finish()
 env.Program( 'TestProgram', 'TestProgram.c' )
 """)
@@ -248,13 +258,34 @@ int main() {
   printf( "Hello\\n" );
 }
 """)
-    test.run()
+    required_stdout = test.wrap_stdout(build_str='.*',
+                                       read_str=
+    """Checking for C header math.h ... ok
+Checking for C header no_std_c_header.h ... failed
+""")
+    # first with SConscriptChdir(0)
+    test.run(stdout = required_stdout, arguments='chdir=no')
     checkFiles( test, [".sconf_temp/.cache", "config.log"] )
+    checkLog( test, 'config.log', 0, 0 )
+
+    test.run(stdout = required_stdout, arguments='chdir=no')
+    checkFiles( test, [".sconf_temp/.cache", "config.log"] )
+    checkLog( test, 'config.log', 3, 1 )
+
+    shutil.rmtree(test.workpath(".sconf_temp"))
+
+    # now with SConscriptChdir(1)
+    test.run(stdout = required_stdout, arguments='chdir=yes')
+    checkFiles( test, [".sconf_temp/.cache", "config.log"] )
+    checkLog( test, 'config.log', 0, 0 )
+
+    test.run(stdout = required_stdout, arguments='chdir=yes')
+    checkFiles( test, [".sconf_temp/.cache", "config.log"] )
+    checkLog( test, 'config.log', 3, 1 )
 
     # 3.1 test custom tests
     reset()
     
-
     compileOK = '#include <stdio.h>\\nint main() {printf("Hello");return 0;}'
     compileFAIL = "syntax error" 
     linkOK = compileOK
-- 
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