Set environment variables needed to build in a different prefix.

This only includes PKG_CONFIG_PATH and LD_LIBRARY_PATH at the moment.

1 files changed, 21 insertions, 19 deletions

diff --git a/morphlib/builder.py b/morphlib/builder.py
index 3de5b67e..1fe36fc7 100644
--- a/morphlib/builder.py
+++ b/morphlib/builder.py
@@ -64,6 +64,7 @@ class BlobBuilder(object):
         self.destdir = None
         self.prefixdir = None
         self.staging = None
+        self.stagingprefix = None
         self.settings = None
         self.real_msg = None
         self.cache_prefix = None
@@ -157,9 +158,10 @@ class BlobBuilder(object):
         for key, value in kwargs.iteritems():
             meta[key] = value
         
-        filename = os.path.join(self.prefixdir, '%s.meta' % blob_name)
-        if not os.path.exists(self.prefixdir):
-            os.mkdir(self.prefixdir)
+        dirname = os.path.join(self.destdir, 'baserock')
+        filename = os.path.join(dirname, '%s.meta' % blob_name)
+        if not os.path.exists(dirname):
+            os.mkdir(dirname)
             
         with open(filename, 'w') as f:
             json.dump(meta, f, indent=4)
@@ -261,6 +263,19 @@ class ChunkBuilder(BlobBuilder):
             if copied_vars[name] is not None:
                 self.ex.env[name] = copied_vars[name]
 
+        # set and extend certain variables to support arbitrary
+        # install prefixes such as /usr/local
+        self.ex.env['PREFIX'] = self.settings['prefix']
+        extended_paths = {
+            'PKG_CONFIG_PATH': 
+                os.path.join(self.stagingprefix, 'lib', 'pkgconfig'),
+            'LD_LIBRARY_PATH':
+                os.path.join(self.stagingprefix, 'lib'),
+        }
+        for varname, pathname in extended_paths.iteritems():
+            value = self.ex.env.get(varname, '')
+            self.ex.env[varname] = '%s:%s' % (pathname, value)
+
         self.ex.env['TERM'] = 'dumb'
         self.ex.env['SHELL'] = '/bin/sh'
         self.ex.env['USER'] = \
@@ -277,14 +292,6 @@ class ChunkBuilder(BlobBuilder):
                                          for x in bindirs)
             self.ex.env['PATH'] = path
 
-        self.ex.env['PREFIX'] = self.settings['prefix']
-        self.ex.env['PKG_CONFIG_PATH'] = ('%s:%s' %
-                (os.path.join(self.prefixdir, 'lib', 'pkgconfig'),
-                 self.ex.env['PKG_CONFIG_PATH']))
-        self.ex.env['LD_LIBRARY_PATH'] = ('%s:%s' %
-                (os.path.join(self.prefixdir, 'lib'),
-                 self.ex.env['LD_LIBRARY_PATH']))
-
         self.ex.env['WORKAREA'] = self.tempdir.dirname
         self.ex.env['DESTDIR'] = self.destdir + '/'
         self.ex.env['TOOLCHAIN_TARGET'] = \
@@ -650,15 +657,10 @@ class Builder(object):
 
         builder.builddir = self.tempdir.join('%s.build' % blob.morph.name)
         builder.destdir = self.tempdir.join('%s.inst' % blob.morph.name)
-        if self.settings['prefix'] != '/usr':
-            relative_prefix = self.settings['prefix']
-            if relative_prefix.startswith('/'):
-                relative_prefix = relative_prefix[1:]
-            builder.prefixdir = os.path.join(
-                    builder.destdir, relative_prefix, 'baserock')
-        else:
-            builder.prefixdir = os.path.join(builder.destdir, 'baserock')
+        builder.prefixdir = self.settings['prefix']
         builder.staging = self.tempdir.join('staging')
+        builder.stagingprefix = os.path.join(
+                builder.staging, os.path.relpath(builder.prefixdir, '/'))
         builder.settings = self.settings
         builder.real_msg = self.msg
         builder.cache_prefix = self.cachedir.name(cache_id)