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Restore protobuf-2.x compatibility

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The change in commit 712154b912de824741381c0bb26c2fbed54515a3 ("Bump
minimum required header version for proto3 syntax") uses functionality
only exposed by protobuf-3.x, breaking the build when compiling against
protobuf-2.x.

Since we still want to support building against protobuf-2.x, this
commit makes the proto3 syntax check in the file generator dependent on
building against protobuf-3.x.
This commit is contained in:
Robert Edmonds 2017-08-07 12:31:55 -04:00
parent dac1a65fea
commit 4302266b45
1 changed files with 2 additions and 0 deletions
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2
protoc-c/c_file.cc
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@ -120,9 +120,11 @@ void FileGenerator::GenerateHeader(io::Printer* printer) {
string filename_identifier = FilenameIdentifier(file_->name());
int min_header_version = 1000000;
#if defined(HAVE_PROTO3)
if (file_->syntax() == FileDescriptor::SYNTAX_PROTO3) {
min_header_version = 1003000;
}
#endif
// Generate top of header.
printer->Print(