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#!/usr/bin/env python
import subprocess
import difflib
def capture_2(args0, args1):
import subprocess
print ' '.join(args0)
print ' '.join(args1)
p0 = subprocess.Popen(args0, stdin=None, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
p1 = subprocess.Popen(args1, stdin=p0.stdout, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out,_ = p1.communicate()
return out
def main():
import sys
clang = sys.argv[1]
flags = sys.argv[2:]
llvmgcc_nm = capture_2(["llvm-gcc"] + flags + ["-emit-llvm","-c","-o","-"],
["llvm-nm", "-extern-only"])
clang_nm = capture_2([clang] + flags + ["-emit-llvm","-c","-o","-"],
["llvm-nm", "-extern-only"])
llvmgcc_nm = llvmgcc_nm.split('\n')
clang_nm = clang_nm.split('\n')
llvmgcc_nm.sort()
clang_nm.sort()
if llvmgcc_nm == clang_nm:
sys.exit(0)
for line in difflib.unified_diff(llvmgcc_nm, clang_nm,
fromfile="llvm-gcc symbols",
tofile="clang symbols"):
print line
sys.exit(1)
if __name__ == '__main__':
main()
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