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pipeline: report changed arg

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This commit is contained in:
Fangrui Song 2019-06-27 01:41:25 -07:00
parent b7027f89e5
commit ab4b4efcaf
1 changed files with 13 additions and 7 deletions
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20
src/pipeline.cc
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@ -114,14 +114,20 @@ bool CacheInvalid(VFS *vfs, IndexFile *prev, const std::string &path,
// For inferred files, allow -o a a.cc -> -o b b.cc
std::string stem = sys::path::stem(path);
bool changed = prev->args.size() != args.size();
for (size_t i = 0; !changed && i < args.size(); i++)
if (strcmp(prev->args[i], args[i]) && sys::path::stem(args[i]) != stem)
changed = true;
if (changed)
int changed = -1, size = std::min(prev->args.size(), args.size());
for (int i = 0; i < size; i++)
if (strcmp(prev->args[i], args[i]) && sys::path::stem(args[i]) != stem) {
changed = i;
break;
}
if (changed < 0 && prev->args.size() != args.size())
changed = size;
if (changed >= 0)
LOG_V(1) << "args changed for " << path
<< (from ? " (via " + *from + ")" : std::string());
return changed;
<< (from ? " (via " + *from + ")" : std::string()) << "; old: "
<< (changed < prev->args.size() ? prev->args[changed] : "")
<< "; new: " << (changed < size ? args[changed] : "");
return changed >= 0;
};
std::string AppendSerializationFormat(const std::string &base) {