When I try to build a C project in code:blocks on ubuntu 14.04 that uses GLM I get this
fatal error: cmath: No such file or directory
Any ideas how to fix this?
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amanuel2
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firstname gklsodascb
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Install C++ compiler support. – Sam Varshavchik Oct 15 '16 at 19:21
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2***C And C++ Arent the same thing*** – amanuel2 Oct 15 '16 at 19:21
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Why are you building a C Project.. your suppose to build a C++ Project , for cmath . look [here](http://en.cppreference.com/w/cpp/header/cmath) for more reference. – amanuel2 Oct 15 '16 at 19:22
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C is not C++. Different languages behave differently. You seem to want a C++ project. – too honest for this site Oct 15 '16 at 19:25
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The problem here is that you are building a C project in Code::Blocks. It gives you the error:
fatal error: cmath: No such file or directory
because you are supposed to be building a C++ project, but the header <cmath> is only available for C++, not C. Look here for more references
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That is true. However, when I go to settings > compiler > toolchain executables, it shows GCC for C and G++ for C++ – firstname gklsodascb Oct 15 '16 at 19:30
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@firstnamegklsodascb yes so use `G++` For `C++` .. `G++` Is a Compiler for `C++` while `GCC` Is a compiler for `C` – amanuel2 Oct 15 '16 at 19:32
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Also the part that includes cmath is part of an entirely different c++ library (GLM) – firstname gklsodascb Oct 15 '16 at 19:33
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I was under the impression that it would automatically compile C with GCC and C++ with g++. Also I though c++ was backwards compatible – firstname gklsodascb Oct 15 '16 at 19:34
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@firstnamegklsodascb backward compatible? If you mean "I thought C++ Can compile C Programs" , Absolutely not! There are cases for which there is valid C Code and Invalid C++ Code. – amanuel2 Oct 15 '16 at 19:35
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@firstnamegklsodascb GCC will only compile a file in C++ if the extension is `.cc` or `.cpp`, or you specify it with `-x` or `-std`. You can also use g++ which defaults to C++ instead of C – Rakete1111 Oct 15 '16 at 19:36
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I mean they are pretty much the same language. Isn't valid C guaranteed to work when compiled with G++? – firstname gklsodascb Oct 15 '16 at 19:48
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@firstnamegklsodascb **No, not at all!** see [**this**](http://stackoverflow.com/questions/861517/what-issues-can-i-expect-compiling-c-code-with-a-c-compiler). – amanuel2 Oct 15 '16 at 19:48
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@firstnamegklsodascb: This has been discussed a hundred times here and elsewhere already. Do research on your own and feel free where C allows something like `const int i = 10; static int a[i];` or C++ `auto int i = 10, a[i];`. **for example**. And gcc is not the actual compiler, but front end only. It also calls the assembler, linker, etc. depending on the arguments.. – too honest for this site Oct 15 '16 at 20:01