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python build script: give a better error message when there is a syntax error in the JSON cache file

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This commit is contained in:
Andrew Tonner 2017-01-18 19:57:34 -08:00
parent 8259c00929
commit 1af0c4685a
1 changed files with 9 additions and 3 deletions
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12
SheepShaver/src/Windows/build_on_msys.py
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@ -253,8 +253,7 @@ def install(make_args, show_build_environment, install_to_dir=None):
with dep_tracker.rebuilding_if_needed("sheepshaver_configure", ["configure", "Makefile.in"],
base_dir=script_path) as needs_rebuild:
if needs_rebuild:
# TODO FIX JIT
run([msys_bash, "./configure", "--with-gtk=no", "--enable-jit=no"],
run([msys_bash, "./configure", "--with-gtk=no"],
cwd=script_path, env=configure_macemu_env)
run([make_bin] + make_args, cwd=script_path, env=our_env)
@ -445,7 +444,14 @@ class BuildDepTracker(object):
def load(self):
if os.path.exists(self.filename):
with open(self.filename, "r") as handle:
self.cache = json.load(handle)
try:
self.cache = json.load(handle)
except ValueError:
msg = "ERROR: There was a problem loading the JSON cache file %s. " \
"Maybe check the file for a syntax error?" % self.filename
print >> sys.stderr, msg
sys.stderr.flush()
raise Exception(msg)
else:
self.cache = {"steps": {}}