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Questions[gcc](ubuntu)

Martin Hope
tinlyx
Asked: 2018-04-27 19:35:25 +0800 CST
  • 61

I just installed Lubuntu 18.04 LTS. There are two options for installing gcc: gcc-7 and gcc-8. Both are available from apt-get install out of the box.

Even after I installed gcc-8, the system is still going to install gcc-7 when I install other packages such as build-essential.

Since gcc-8 is newer, is there a way to make it install gcc-8 and gcc-8 only?

gcc 18.04
Martin Hope
user313944
Asked: 2014-08-10 16:54:49 +0800 CST
  • 48

I'm having trouble getting clang++ to work as I compile my code. Specifically, I'm getting a make: clang++: Command not found error.

I've run sudo apt-get install llvm, and also sudo apt-get install build-essential and sudo apt-get update. What do I have to do to get clang++ installed?

gcc
Martin Hope
soandos
Asked: 2012-03-16 10:06:20 +0800 CST
  • 50

I wish to install gcc 4.7 so that I can use some c++11 features.

I downloaded the source, ran ./configure and was told I needed GMP. Downloaded the code for that, hit ./configure and was told I needed m4. But I already have m4 (least that is what synamptic tells me).

What is going on and how can I fix it?

software-installation gcc
Martin Hope
Nils
Asked: 2011-02-16 07:52:57 +0800 CST
  • 276

So I have installed gcc-4.4 and gcc-4.3 (same for g++). Now as far as I remember there is a tool in Ubuntu which sets the symlinks for you if you just tell it which version you want. However it does not seem to work in the newest version, which I find disappointing.

root@nexus:~# update-alternatives --config gcc
update-alternatives: error: no alternatives for gcc.
root@nexus:~# update-alternatives --config cc
There is only one alternative in link group cc: /usr/bin/gcc
Nothing to configure.


root@nexus:~# dpkg -l | grep gcc | awk '{print $2}'
gcc
gcc-4.3
gcc-4.3-base
gcc-4.3-multilib
gcc-4.4
gcc-4.4-base
gcc-4.4-multilib
gcc-4.5-base
gcc-multilib
lib32gcc1
libgcc1

Any ideas?

gcc