diff options
| -rw-r--r-- | tools/shared.py | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/tools/shared.py b/tools/shared.py index a480faa9..faf26816 100644 --- a/tools/shared.py +++ b/tools/shared.py @@ -77,6 +77,8 @@ if USE_EMSDK: '-U__APPLE__' ] COMPILER_OPTS += EMSDK_OPTS +else: + EMSDK_OPTS = [] # Engine tweaks @@ -345,9 +347,9 @@ class Building: assert os.path.exists(output_filename), 'Could not create bc file: ' + output @staticmethod - def llvm_nm(filename): + def llvm_nm(filename, stdout=PIPE, stderr=None): # LLVM binary ==> list of symbols - output = Popen([LLVM_NM, filename], stdout=PIPE).communicate()[0] + output = Popen([LLVM_NM, filename], stdout=stdout, stderr=stderr).communicate()[0] class ret: defs = [] undefs = [] @@ -534,3 +536,16 @@ class Building: return filename + '.cc.js' + @staticmethod + def is_bitcode(filename): + # checks if a file contains LLVM bitcode + # if the file doesn't exist or doesn't have valid symbols, it isn't bitcode + try: + defs = Building.llvm_nm(filename, stderr=PIPE) + assert len(defs.defs + defs.undefs) > 0 + except: + return False + # look for magic signature + b = open(filename, 'r').read(4) + return b[0] == 'B' and b[1] == 'C' + |