Revision: 523
          http://rpy.svn.sourceforge.net/rpy/?rev=523&view=rev
Author:   warnes
Date:     2008-05-14 11:31:21 -0700 (Wed, 14 May 2008)

Log Message:
-----------
Use the 'R CMD config LAPACK_LIBS' command to determin the appropriate link flags for lapack, instead of blindly assuming that '-L<RHOME>/lib -lRlapack' is the correct magic incantation.

Modified Paths:
--------------
    trunk/rpy/rpy_tools.py
    trunk/rpy/setup.py

Modified: trunk/rpy/rpy_tools.py
===================================================================
--- trunk/rpy/rpy_tools.py	2008-05-14 17:51:40 UTC (rev 522)
+++ trunk/rpy/rpy_tools.py	2008-05-14 18:31:21 UTC (rev 523)
@@ -143,3 +143,20 @@
                        % PYTHON_DIR )
     
   return PYTHON_DIR
+
+def get_R_LAPACK_LIB_FLAGS(RHOME=get_R_HOME()):
+  """
+  Determine the necessary link arguments for lapack 
+  """
+  rexec = os.path.join(RHOME, 'bin', 'R')
+  stat, output = getstatusoutput('"%s" CMD config LAPACK_LIBS' % rexec )
+  if stat or len(output)<=0:
+    raise RuntimeError("Couldn't execute the R interpreter" +
+                       " `%s'.\n" % rexec )
+  
+  LAPACK_LIB_FLAGS = output.strip()
+  if not LAPACK_LIB_FLAGS:
+    raise RuntimeError("Couldn't obtain LAPACK_LIBS information from output\n"
+                       "of `R CMD config LAPACK_LIBS'.\n")
+  
+  return LAPACK_LIB_FLAGS

Modified: trunk/rpy/setup.py
===================================================================
--- trunk/rpy/setup.py	2008-05-14 17:51:40 UTC (rev 522)
+++ trunk/rpy/setup.py	2008-05-14 18:31:21 UTC (rev 523)
@@ -150,23 +150,20 @@
         library_dirs= r_libs
         runtime_libs = r_libs
         extra_compile_args=[]
-    elif sys.platform=='osf1V5':
-        include_dirs = [ os.path.join(RHOME.strip(), 'include'), 
-                         'src' ]
-        libraries=['R','Rlapack']
-        library_dirs = r_libs
-        runtime_libs = r_libs
-        extra_compile_args=["-shared"]
-        source_files = source_files + ["src/setenv.c"]
+
     else: # unix-like systems, this is known to work for Linux and Solaris
         include_dirs = [ os.path.join(RHOME.strip(), 'include'),
                          'src', '/usr/share/R/include', "/usr/include/R"]
-        libraries=['R','Rlapack']
         library_dirs = r_libs
         runtime_libs = r_libs
         extra_compile_args=["-shared"]
         source_files = source_files + ["src/setenv.c"]
 
+        libraries=['R']
+
+        # Ask R to tell us how to properly link against lapack
+        extra_compile_args += [ rpy_tools.get_R_LAPACK_LIB_FLAGS( RHOME ) ]
+
     # Discover which array packages are present
     try: 
         import numpy