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authorSteve Reinhardt <steve.reinhardt@amd.com>2011-05-02 12:40:32 -0700
committerSteve Reinhardt <steve.reinhardt@amd.com>2011-05-02 12:40:32 -0700
commit8ce85d3db6681084c5fe50bded0a312e550581ab (patch)
tree69c1198e08f04bb26970ab1ced937fc0fa0c0fb5
parentf713af951a6bfd0953fba801b72513b82469fdeb (diff)
downloadgem5-8ce85d3db6681084c5fe50bded0a312e550581ab.tar.xz
scons: interpret paths relative to launch directory
Make sure all command-line targets and EXTRAS directories are interpreted relative to the launch directory. This turns out to be very useful when building code from an EXTRAS directory using SCons's -C option. We were trying to do this with targets but it didn't actually work since we didn't update BUILD_TARGETS (so SCons got confused internally). We weren't even trying with EXTRAS. To simplify the code, the default target is also interpreted relative to the launch dir even though it was explicitly handled as relative to the m5 dir before... I doubt anyone really uses this anyway so it didn't seem worth the complexity. (Maybe we should get rid of it?)
-rwxr-xr-xSConstruct52
1 files changed, 19 insertions, 33 deletions
diff --git a/SConstruct b/SConstruct
index 012b968f1..9e1e03ccd 100755
--- a/SConstruct
+++ b/SConstruct
@@ -264,30 +264,29 @@ def rfind(l, elt, offs = -1):
return i
raise ValueError, "element not found"
+# Take a list of paths (or SCons Nodes) and return a list with all
+# paths made absolute and ~-expanded. Paths will be interpreted
+# relative to the launch directory unless a different root is provided
+def makePathListAbsolute(path_list, root=GetLaunchDir()):
+ return [abspath(joinpath(root, expanduser(str(p))))
+ for p in path_list]
+
# Each target must have 'build' in the interior of the path; the
# directory below this will determine the build parameters. For
# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
# recognize that ALPHA_SE specifies the configuration because it
-# follow 'build' in the bulid path.
-
-# Generate absolute paths to targets so we can see where the build dir is
-if COMMAND_LINE_TARGETS:
- # Ask SCons which directory it was invoked from
- launch_dir = GetLaunchDir()
- # Make targets relative to invocation directory
- abs_targets = [ normpath(joinpath(launch_dir, str(x))) for x in \
- COMMAND_LINE_TARGETS]
-else:
- # Default targets are relative to root of tree
- abs_targets = [ normpath(joinpath(main.root.abspath, str(x))) for x in \
- DEFAULT_TARGETS]
+# follow 'build' in the build path.
+# The funky assignment to "[:]" is needed to replace the list contents
+# in place rather than reassign the symbol to a new list, which
+# doesn't work (obviously!).
+BUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS)
# Generate a list of the unique build roots and configs that the
# collected targets reference.
variant_paths = []
build_root = None
-for t in abs_targets:
+for t in BUILD_TARGETS:
path_dirs = t.split('/')
try:
build_top = rfind(path_dirs, 'build', -2)
@@ -326,21 +325,6 @@ main.SetOption('duplicate', 'soft-copy')
# tree (not specific to a particular build like ALPHA_SE)
#
-# Variable validators & converters for global sticky variables
-def PathListMakeAbsolute(val):
- if not val:
- return val
- f = lambda p: abspath(expanduser(p))
- return ':'.join(map(f, val.split(':')))
-
-def PathListAllExist(key, val, env):
- if not val:
- return
- paths = val.split(':')
- for path in paths:
- if not isdir(path):
- raise SCons.Errors.UserError("Path does not exist: '%s'" % path)
-
global_vars_file = joinpath(build_root, 'variables.global')
global_vars = Variables(global_vars_file, args=ARGUMENTS)
@@ -351,8 +335,7 @@ global_vars.AddVariables(
('BATCH', 'Use batch pool for build and tests', False),
('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
('M5_BUILD_CACHE', 'Cache built objects in this directory', False),
- ('EXTRAS', 'Add extra directories to the compilation', '',
- PathListAllExist, PathListMakeAbsolute),
+ ('EXTRAS', 'Add extra directories to the compilation', '')
)
# Update main environment with values from ARGUMENTS & global_vars_file
@@ -363,10 +346,10 @@ help_texts["global_vars"] += global_vars.GenerateHelpText(main)
global_vars.Save(global_vars_file, main)
# Parse EXTRAS variable to build list of all directories where we're
-# look for sources etc. This list is exported as base_dir_list.
+# look for sources etc. This list is exported as extras_dir_list.
base_dir = main.srcdir.abspath
if main['EXTRAS']:
- extras_dir_list = main['EXTRAS'].split(':')
+ extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':'))
else:
extras_dir_list = []
@@ -808,6 +791,9 @@ Export('export_vars')
# Walk the tree and execute all SConsopts scripts that wil add to the
# above variables
for bdir in [ base_dir ] + extras_dir_list:
+ if not isdir(bdir):
+ print "Error: directory '%s' does not exist" % bdir
+ Exit(1)
for root, dirs, files in os.walk(bdir):
if 'SConsopts' in files:
print "Reading", joinpath(root, 'SConsopts')