buildman: Allow make flags to be specified for each board
There are a few make options such as BUILD_TAG which can be provided when
building U-Boot. Provide a way for buildman to pass these flags to make
also.
The flags should be in a [make-flags] section and arranged by target name
(the 'target' column in boards.cfg. See the README for more details.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/buildman/toolchain.py b/tools/buildman/toolchain.py
index dfa1d00..a292338 100644
--- a/tools/buildman/toolchain.py
+++ b/tools/buildman/toolchain.py
@@ -3,6 +3,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
+import re
import glob
import os
@@ -97,12 +98,18 @@
def __init__(self):
self.toolchains = {}
self.paths = []
- for name, value in bsettings.GetItems('toolchain'):
+ toolchains = bsettings.GetItems('toolchain')
+ if not toolchains:
+ print ("Warning: No tool chains - please add a [toolchain] section"
+ " to your buildman config file %s. See README for details" %
+ config_fname)
+
+ for name, value in toolchains:
if '*' in value:
self.paths += glob.glob(value)
else:
self.paths.append(value)
-
+ self._make_flags = dict(bsettings.GetItems('make-flags'))
def Add(self, fname, test=True, verbose=False):
"""Add a toolchain to our list
@@ -167,3 +174,73 @@
if not arch in self.toolchains:
raise ValueError, ("No tool chain found for arch '%s'" % arch)
return self.toolchains[arch]
+
+ def ResolveReferences(self, var_dict, args):
+ """Resolve variable references in a string
+
+ This converts ${blah} within the string to the value of blah.
+ This function works recursively.
+
+ Args:
+ var_dict: Dictionary containing variables and their values
+ args: String containing make arguments
+ Returns:
+ Resolved string
+
+ >>> bsettings.Setup()
+ >>> tcs = Toolchains()
+ >>> tcs.Add('fred', False)
+ >>> var_dict = {'oblique' : 'OBLIQUE', 'first' : 'fi${second}rst', \
+ 'second' : '2nd'}
+ >>> tcs.ResolveReferences(var_dict, 'this=${oblique}_set')
+ 'this=OBLIQUE_set'
+ >>> tcs.ResolveReferences(var_dict, 'this=${oblique}_set${first}nd')
+ 'this=OBLIQUE_setfi2ndrstnd'
+ """
+ re_var = re.compile('(\$\{[a-z0-9A-Z]{1,}\})')
+
+ while True:
+ m = re_var.search(args)
+ if not m:
+ break
+ lookup = m.group(0)[2:-1]
+ value = var_dict.get(lookup, '')
+ args = args[:m.start(0)] + value + args[m.end(0):]
+ return args
+
+ def GetMakeArguments(self, board):
+ """Returns 'make' arguments for a given board
+
+ The flags are in a section called 'make-flags'. Flags are named
+ after the target they represent, for example snapper9260=TESTING=1
+ will pass TESTING=1 to make when building the snapper9260 board.
+
+ References to other boards can be added in the string also. For
+ example:
+
+ [make-flags]
+ at91-boards=ENABLE_AT91_TEST=1
+ snapper9260=${at91-boards} BUILD_TAG=442
+ snapper9g45=${at91-boards} BUILD_TAG=443
+
+ This will return 'ENABLE_AT91_TEST=1 BUILD_TAG=442' for snapper9260
+ and 'ENABLE_AT91_TEST=1 BUILD_TAG=443' for snapper9g45.
+
+ A special 'target' variable is set to the board target.
+
+ Args:
+ board: Board object for the board to check.
+ Returns:
+ 'make' flags for that board, or '' if none
+ """
+ self._make_flags['target'] = board.target
+ arg_str = self.ResolveReferences(self._make_flags,
+ self._make_flags.get(board.target, ''))
+ args = arg_str.split(' ')
+ i = 0
+ while i < len(args):
+ if not args[i]:
+ del args[i]
+ else:
+ i += 1
+ return args