Error while installing PBBS

[Upasna55]

Hello Team

I am getting the following error while installing PBBS. Would be grateful if anyone can help me to proceed further.

Best Regards
Upasna

[gblelloch]

Apparently your compiler does not support the "#pragma once" directive. Can you say what compiler you are using (it would use your g++ by default). You can get the version using "g++ --version".

We are moving away from that directive, but currently there are still many files that use it. It tells the compiler to include the file just once in a single compilation unit.

[Upasna55]

Hello Gblelloch

Thank you for your response. g++ version on my system is 7.5.0

[Upasna55]

Gblelloch, Would be grateful if you could guide me further, to resolve this issue.

[gblelloch]

We are not able to reproduce your bug on an ubuntu system (which you seem to be running). In particular if we do:

git clone git@github.com:cmuparlay/pbbsbench.git
git submodule init
git submodule update
cd benchmarks/integerSort/parallelRadixSort/
make

all works well. That being said, what is causing your problem is that somehow your compiler thinks the files:
./parlay/internal/get_time.h
and
./benmarks/integerSort/bench/common/parlay/internal/get_time.h
are different. They should be symlinks of each other. If somehow the parlay directory got copied instead of symlinked it would cause this problem. You could fix it by replacing #pragma once with

#ifndef PARLAY_TIMER_H_
#define PARLAY_TIMER_H_

at the start of the get_time.h file, and

#endif

at the end of the file. There might be other such cases. We will be making this kind of replacement throughout, but it wont happen immediately.

[Upasna55]

Thank you Gblelloch!