buildman: Add a way to specific a full toolchain prefix
At present buildman allows you to specify the directory containing the
toolchain, but not the actual toolchain prefix. If there are multiple
toolchains in a single directory, this can be inconvenient.
Add a new 'toolchain-prefix' setting to the settings file, which allows
the full prefix (or path to the C compiler) to be specified.
Update the documentation to match.
Suggested-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
diff --git a/tools/buildman/toolchain.py b/tools/buildman/toolchain.py
index 7bcc0af..3993db3 100644
--- a/tools/buildman/toolchain.py
+++ b/tools/buildman/toolchain.py
@@ -14,7 +14,8 @@
import bsettings
import command
-PRIORITY_CALC = 0
+(PRIORITY_FULL_PREFIX, PRIORITY_PREFIX_GCC, PRIORITY_PREFIX_GCC_PATH,
+ PRIORITY_CALC) = range(4)
# Simple class to collect links from a page
class MyHTMLParser(HTMLParser):
@@ -152,11 +153,17 @@
Public members:
toolchains: Dict of Toolchain objects, keyed by architecture name
+ prefixes: Dict of prefixes to check, keyed by architecture. This can
+ be a full path and toolchain prefix, for example
+ {'x86', 'opt/i386-linux/bin/i386-linux-'}, or the name of
+ something on the search path, for example
+ {'arm', 'arm-linux-gnueabihf-'}. Wildcards are not supported.
paths: List of paths to check for toolchains (may contain wildcards)
"""
def __init__(self):
self.toolchains = {}
+ self.prefixes = {}
self.paths = []
self._make_flags = dict(bsettings.GetItems('make-flags'))
@@ -182,6 +189,7 @@
return paths
def GetSettings(self):
+ self.prefixes = bsettings.GetItems('toolchain-prefix')
self.paths += self.GetPathList()
def Add(self, fname, test=True, verbose=False, priority=PRIORITY_CALC,
@@ -228,6 +236,21 @@
fnames.append(fname)
return fnames
+ def ScanPathEnv(self, fname):
+ """Scan the PATH environment variable for a given filename.
+
+ Args:
+ fname: Filename to scan for
+ Returns:
+ List of matching pathanames, or [] if none
+ """
+ pathname_list = []
+ for path in os.environ["PATH"].split(os.pathsep):
+ path = path.strip('"')
+ pathname = os.path.join(path, fname)
+ if os.path.exists(pathname):
+ pathname_list.append(pathname)
+ return pathname_list
def Scan(self, verbose):
"""Scan for available toolchains and select the best for each arch.
@@ -240,6 +263,21 @@
verbose: True to print out progress information
"""
if verbose: print 'Scanning for tool chains'
+ for name, value in self.prefixes:
+ if verbose: print " - scanning prefix '%s'" % value
+ if os.path.exists(value):
+ self.Add(value, True, verbose, PRIORITY_FULL_PREFIX, name)
+ continue
+ fname = value + 'gcc'
+ if os.path.exists(fname):
+ self.Add(fname, True, verbose, PRIORITY_PREFIX_GCC, name)
+ continue
+ fname_list = self.ScanPathEnv(fname)
+ for f in fname_list:
+ self.Add(f, True, verbose, PRIORITY_PREFIX_GCC_PATH, name)
+ if not fname_list:
+ raise ValueError, ("No tool chain found for prefix '%s'" %
+ value)
for path in self.paths:
if verbose: print " - scanning path '%s'" % path
fnames = self.ScanPath(path, verbose)