[Boost-commit] svn:boost r62895 - trunk/libs/python/build

Subject: [Boost-commit] svn:boost r62895 - trunk/libs/python/build
From: steven_at_[hidden]
Date: 2010-06-13 00:00:11

Author: steven_watanabe
Date: 2010-06-13 00:00:10 EDT (Sun, 13 Jun 2010)
New Revision: 62895
URL: http://svn.boost.org/trac/boost/changeset/62895

Log:
Delay the warning that the Boost.Python Jamfile emits, until someone actually tries to use the library.  Fixes #2417.
Text files modified: 
   trunk/libs/python/build/Jamfile.v2 |    23 +++++++++++++++--------                 
   1 files changed, 15 insertions(+), 8 deletions(-)

Modified: trunk/libs/python/build/Jamfile.v2
==============================================================================
--- trunk/libs/python/build/Jamfile.v2	(original)
+++ trunk/libs/python/build/Jamfile.v2	2010-06-13 00:00:10 EDT (Sun, 13 Jun 2010)
@@ -14,14 +14,20 @@
     # Attempt default configuration of python
     import toolset : using ;
     using python ;
-    
-    if ! [ python.configured ]
-    {
-        ECHO "WARNING: No python installation configured and autoconfiguration" ; 
-        ECHO "         failed.  See http://www.boost.org/libs/python/doc/building.html" ;
-        ECHO "         for configuration instructions or pass --without-python to" ;
-        ECHO "         suppress this message and silently skip all Boost.Python targets" ;
-    }
+}
+
+if [ python.configured ] || ( --without-python in  [ modules.peek : ARGV ] )
+{
+    alias config-warning ;
+}
+else
+{
+    message config-warning
+        : "warning: No python installation configured and autoconfiguration"
+        : "note: failed.  See http://www.boost.org/libs/python/doc/building.html"
+        : "note: for configuration instructions or pass --without-python to"
+        : "note: suppress this message and silently skip all Boost.Python targets"
+        ;
 }
 
 rule find-py3-version
@@ -122,6 +128,7 @@
             # as it's not possible anyway, and to cause dependents to
             # fail to build
             [ unless [ python.configured ] : <build>no ]
+            <dependency>config-warning
 
             <python-debugging>on:<define>BOOST_DEBUG_PYTHON
             [ cond $(is-py3) : <python>$(py3-version) ]