Error installing gem on Ubuntu Servor

[lmX2015]

Hey, I tried to install the gem on an Ubuntu server in order to run ethereum.rb. But I got an error. This is the console report

---

sudo gem install digest-sha3 Building native extensions. This could take a while... ERROR: Error installing digest-sha3: ERROR: Failed to build gem native extension.

current directory: /var/lib/gems/2.3.0/gems/digest-sha3-1.1.0/ext/digest

/usr/bin/ruby2.3 -r ./siteconf20170620-36620-a9fw36.rb extconf.rb checking for ruby/digest.h... yes checking for rb_str_set_len()... yes creating Makefile

To see why this extension failed to compile, please check the mkmf.log which can be found here:

/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/digest-sha3-1.1.0/mkmf.log

current directory: /var/lib/gems/2.3.0/gems/digest-sha3-1.1.0/ext/digest make "DESTDIR=" clean

current directory: /var/lib/gems/2.3.0/gems/digest-sha3-1.1.0/ext/digest make "DESTDIR=" compiling KeccakF-1600-reference.c compiling KeccakNISTInterface.c compiling KeccakSponge.c compiling displayIntermediateValues.c displayIntermediateValues.c: In function ‘displayText’: displayIntermediateValues.c:113:9: error: format not a string literal and no format arguments [-Werror=format-security] fprintf(intermediateValueFile, text); ^ cc1: some warnings being treated as errors Makefile:239: recipe for target 'displayIntermediateValues.o' failed make: *** [displayIntermediateValues.o] Error 1

make failed, exit code 2

It seems the command fprintf(intermediateValueFile, text); in intermediateValues.c does not precise the type of text variable thus raises a warning and stops the compiler (Ubuntu has not been compiling with such warning since some recent update).

Would simply remplace fprintf(intermediateValueFile, "%s", text) fix the issue ?

[Eugenpaul]

@lmX2015 Hello I'm currently facing the same issue. Have you been able to resolve it?

[se3000]

@lmX2015 have you tested your proposed fix?

[jezhiggins]

Hi, I hit this error today and confirm @lmX2015's fix is correct.

I pulled down the gem, unpacked it all, applied the fix, repacked the gem, and then installed that. Everything went through, and all appears to be working correctly.

[jezhiggins]

I was going to bash together a pull request, but somebody's already done it - PR 8 https://github.com/phusion/digest-sha3-ruby/pull/8 has this fix.

[xorgnak]

same error.

[alex-kampa]

Added this to my Gemfile and it worked on ubuntu:

git "https://github.com/izetex/digest-sha3-ruby" do gem 'digest-sha3' end

Thanks @izetex !

[mtomov]

Thank you @alex-kampa !

[hardywu]

bundle config build.digest-sha3 --with-cflags="-Wno-format-security"

before bundle install

[nbsamar]

If @hardywu answer did not work, and you still face cc1 (tigerlake) error, try updating gcc and g++ sudo apt install gcc-10 g++-10

sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100 --slave /usr/bin/g++ g++ /usr/bin/g++-10 --slave /usr/bin/gcov gcov /usr/bin/gcov-10

sudo update-alternatives --config gcc

[q9f]

It's fixed in https://github.com/q9f/keccak.rb

https://rubygems.org/gems/keccak