Thanks for the advice. I added the repository and installed gcc-5 via Synaptics. I asked for ./configure CXX="gcc-5" as you said, but I still get the error message checking whether gcc-5 supports C++14 features by default... no checking whether gcc-5 supports C++14 features with -std=gnu++14... no checking whether gcc-5 supports C++14 features with -std=gnu++0x... no configure: error: *** A compiler with support for C++14 language features is required. My version of gcc-5 is gcc version 5.3.0 20151204 (Ubuntu 5.3.0-3ubuntu1~14.04) What am I doing wrong? 2016-04-13 18:08 GMT+02:00 Tiago de Paula Peixoto <tiago@skewed.de>:
On 13.04.2016 17:13, Yannis Haralambous wrote:
I'm trying to install graph-tool under Ubuntu 14. I didn't found gcc5 in the list of synaptic packages but I did installed clang3.4.
Clang 3.4 is too old to compile graph-tool.
Please read the installation instructions carefully, in particular the note about Ubuntu 14:
https://graph-tool.skewed.de/download#debian
which says:
When using Ubuntu 14.04 LTS (Trusty Tahr) or 15.04 (Vivid Vervet), it is necessary need to install the following PPA repository, which contains a newer GCC version and associated libraries:
add-apt-repository ppa:ubuntu-toolchain-r/test
This will give you GCC 5.
Also, please use the pre-compiled packages for Ubuntu, instead of trying compiling it yourself.
But when I run ./configure, it doesn't find clang3.4 (and probably detects pre-installed gcc 4.8.2 instead). How can I tell ./configure to use clang3.4 rather than gcc4.8.2 ?
To select a particular compiler, e.g. GCC 5, you have to call
./configure CXX="gcc-5"
But please try to install the pre-compiled packages first, since it is far easier.
Best, Tiago
-- Tiago de Paula Peixoto <tiago@skewed.de>
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