Error While building the flatc

[dev...@tune.com]

Hey Guys, 

I am new to flatbuffers! I am trying to build the flatc compiler over my machine! Its Fedora!

I have followed all the previous steps and were able to create the Makefile successfully!

While doing the "make Install" command I am having the following error!

[devang@localhost flatbuffers-master]$ make install

Scanning dependencies of target flatc

[  4%] Building CXX object CMakeFiles/flatc.dir/src/idl_parser.cpp.o

[  9%] Building CXX object CMakeFiles/flatc.dir/src/idl_gen_cpp.cpp.o

[ 14%] Building CXX object CMakeFiles/flatc.dir/src/idl_gen_general.cpp.o

[ 19%] Building CXX object CMakeFiles/flatc.dir/src/idl_gen_go.cpp.o

[ 23%] Building CXX object CMakeFiles/flatc.dir/src/idl_gen_python.cpp.o

[ 28%] Building CXX object CMakeFiles/flatc.dir/src/idl_gen_text.cpp.o

[ 33%] Building CXX object CMakeFiles/flatc.dir/src/idl_gen_fbs.cpp.o

[ 38%] Building CXX object CMakeFiles/flatc.dir/src/flatc.cpp.o

/home/devang/Documents/flatbuffers-master/src/flatc.cpp: In function ‘int main(int, const char**)’:

/home/devang/Documents/flatbuffers-master/src/flatc.cpp:179:68: error: converting to ‘bool’ from ‘std::nullptr_t’ requires direct-initialization [-fpermissive]

   if (!filenames.size()) Error("missing input files", nullptr, true);

                                                                    ^

/home/devang/Documents/flatbuffers-master/src/flatc.cpp:75:13: note:   initializing argument 2 of ‘void Error(const string&, bool, bool)’

 static void Error(const std::string &err, bool usage, bool show_exe_name) {

             ^

CMakeFiles/flatc.dir/build.make:215: recipe for target 'CMakeFiles/flatc.dir/src/flatc.cpp.o' failed

make[2]: *** [CMakeFiles/flatc.dir/src/flatc.cpp.o] Error 1

CMakeFiles/Makefile2:60: recipe for target 'CMakeFiles/flatc.dir/all' failed

make[1]: *** [CMakeFiles/flatc.dir/all] Error 2

Makefile:127: recipe for target 'all' failed

make: *** [all] Error 2

Can anyone please help me out over this?

Thanks,

Devang

[Wouter van Oortmerssen]

Yeah, nullptr should be false, will fix shortly. That code has been in there for a long time though, wonder why it only fails now. What's your gcc --version ?

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[Devang Patel]

I have tried with the clang and it was still giving me errors!

gcc version that I previously used was 5.1.1!

[Wouter van Oortmerssen]

This should be fixed by: https://github.com/google/flatbuffers/pull/224

[Devang Patel]

Thank you!