The GNU Compiler Collection is the standard compiler system used on many Unix-like operating systems, including Linux. Originally meant for compiling C programs, it can now also handle C++, Java and several other languages.

learn more… | top users | synonyms

1
vote
2answers
154 views

GCC Fatal Error

everyone Here's my problem; So, I'm new to Ubuntu and programming and I just wanted to start with C. I created the classic "hello.c" file #include <stdio.h> main () { printf("Hello ...
1
vote
1answer
5k views

cannot install lxml in virtualenv (python)

I cannot install lxml. In system i have python-lxml package, but i need other... Please help, if you can - my task is install lxml for development in virtual enviroment using virtualenv. I found this ...
1
vote
2answers
4k views

No such file or directory #include <string> [closed]

I wrote the program kai.c and now am trying to compile it with gcc kai.c -o kai, which returns: kai.c:5:18: fatal error: string: No such file or directory #include <string> ^ ...
1
vote
2answers
7k views

Installing missing package that provides Xm/Xm.h

I'm compiling a software package that requires a header file. The header file is missing from my Ubuntu 11.10 (64-bit) installation. During the compilation using make, gcc and gfortran, I receive ...
1
vote
3answers
346 views

best place to learn ubuntu linux for a windows programmer newbie

I am a programmer, I developed in C/C++/C#.NET, JAVA, HTML and Matlab Most of my work was in C# and .NET framework generally I recently switched to try linux for 2 months as exploration, I want to ...
1
vote
1answer
27k views

How to compile a C program that uses math.h?

I am having problems in math.h header file and when I use square root function as in sqrt(d). But my compiler is not supporting this. Please advise me about this problem. My Ubuntu version is 2012.
1
vote
3answers
3k views

Can't install gcc 4.8, dependency issues

I tried downoading 4.8 for 12.04 from https://launchpad.net/~ubuntu-toolchain-r/+archive/test/+packages (I did not find for 13.04 as is mentioned here: How to install gcc-4.8 in Ubuntu 12.04 from the ...
1
vote
1answer
10k views

fatal error: avr/io.h: No such file or directory compilation terminated

how to load avr/io.h header files in the gcc compiler..im using 12.04 version of Ubuntu.. wen ever i run a AVR program this kind of error is generating " fatal error: avr/io.h: No such file or ...
1
vote
3answers
215 views

Simple way to get all .o files but one

I'm trying to link all *.o files from another folder and would like to in my Makefile do something like; g++ *.o (folder/*.o and not folder/main.o) -o bin Is there someway I can use somekind of ...
1
vote
1answer
263 views

gcc doesn´t work

I have a problem with GCC I try to compile Wine 1.7.26. When I use the ./configure command I get an error: C compiler cannot create executables See `config.log' for more details This file contains ...
1
vote
2answers
5k views

apt-get: error loading libgcc_s.so.1

I am using Ubuntu 12.04.3 LTS, 64-bit, with gcc 4.6.3 I want to update gcc to 4.7, and do as the link said: How do I install gcc 4.7? But I got error: Fetched 14.0 MB in 18s (767 kB/s) ...
1
vote
1answer
1k views

C compiler cannot create excecutables

When I am trying to install a openvpn from a tarball , following error occurs checking whether the C compiler works... no configure: error: in `/home/shubhamd/Downloads/openvpn-2.3.2': ...
1
vote
1answer
191 views

Compiling C source file without .c suffic

Let hello_world be a valid C source file. When I try to compile I get gcc hello_world // hello_world: file not recognized: File format not recognized I know I could rename to have .c suffix, but if ...
1
vote
1answer
7k views

Terminal commands for installing g++ 4.8?

Could somebody please advise how I could install g++ 4.8 ? I understand its not an official release yet (and that I would need to manually download a file) but I get internal compiler bug issues with ...
1
vote
1answer
5k views

gcc segmentation fault on Ubuntu 12.04

I am trying to compile a C program on Ubuntu precise 12.04. Here's the program: #include <stdio.h> int main(int argc, char** argv) { printf("Hello World!"); return 0; } My gcc version is ...
1
vote
3answers
1k views

Error while installing tiff-4.0.3

I get the following errors while installing tiff-4.0.3: pranav@pranav-Inspiron-1545:~$ cd dependency/ pranav@pranav-Inspiron-1545:~/dependency$ tar -xvf libtiff4-3.6.0-5.tar.bz2 usr/bin/cygtiff4.dll ...
1
vote
1answer
6k views

How to install gcc-4.4.6?

My computer has Ubuntu 11.10 32-bit OS. I downloaded gcc4.4.6 core package (tar file), unzipped it and tried the following: ./configure sudo make install which gave me the following error: ...
1
vote
2answers
8k views

How to upgrade g++ to 4.7.1?

Richard Holloway's answer to this thread nicely explains how to upgrade from 4.6.3 to 4.7.0 (on 12.04, in my case) but I would like to upgrade to 4.7.1, which has been available for awhile. However ...
1
vote
2answers
16k views

Is it possible to downgrade gcc 4.6.1 to 4.4.x?

I've tried the following: sudo apt-get remove gcc sudo apt-get install gcc-4.4 But this does not work, running gcc --version gives a 'No such file or directory' error.
1
vote
2answers
5k views

Compile 32 bit on 64 bitsystem

I'm trying to compile a 32 bit version of python on a 64 bit ubuntu system with the following configure command: CC="gcc -m32" LDFLAGS="-L/lib32 -L/usr/lib32 \ -Lpwd/lib32 -Wl,-rpath,/lib32 \ ...
1
vote
1answer
1k views

How to downgrade gcc from 4.4.4 to 4.2.1?

The newest Ubuntu (10.10) has gcc version 4.4.4, but I need 4.2.1 for compilation issues. The library that I'm using requires me to use 4.2.1. How can I downgrade the gcc to a specific version?
1
vote
1answer
886 views

How do I run g++-4.5?

I've installed g++-4.5 via apt, and there exists a /usr/bin/g++-4.5. However, when I try and run g++-4.5, I get this error message: /usr/bin/g++-4.5: not found (hardened-c++ could not find target) ...
1
vote
2answers
88 views

Can't compile on Ubuntu 14.04 with gcc 4.8

I installed build-essential in Ubuntu 14.04 and created a test file helloworld.c with: #include <stdio.h> int main(void) { printf("Hello world\n"); return 0; } The output of gcc -o hello ...
1
vote
1answer
103 views

Why am I getting this undefined reference error while trying to build a c++ project? [closed]

To fix another debug error, I added -std=c++11 to the build command. Now I'm getting a ton of "undefined reference errors like this one: In function encrypt(std::string&, int)': ...
1
vote
1answer
53 views

Abnormal behaviour of malloc() fuction?

I was playing around with alloc functions in my Ubuntu 14.04 64-bit, gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) and found that malloc returns memory with initializing it to zero. Which is quite weird ...
1
vote
1answer
557 views

Problem installing g++ ccompiler on Ubuntu 14.04

I tried to install g++ using packages from another user. offline..but there were errors. After connecting to the net I tried to install using sudo apt-get install g++, but it gave the following ...
1
vote
3answers
6k views

How do you fix a gcc compile 127 error? sudo apt-get install g++ doesn't work

*emphasized text*when I try to run a program I get the following error. ubuntu@ubuntu-VirtualBox:~/Desktop$ make g++ -Wall -Wno-switch -I. -g -c -o pass.o pass.cpp make: g++: Command not found ...
1
vote
1answer
4k views

How to build GUI application in C language using GTK+?

I have written code in C language using GTK. This code gives a window with 2 buttons, but I do not know how to make the standalone GUI application from this code. Please explain to me step by step ...
1
vote
1answer
650 views

Is it possible to let gcc 4.7 and gcc 4.8 co-exist in Ubuntu 13.10

I have some development work, it seems that GCC 4.8 will not work well with other development tools, so I may have to stick with GCC 4.7, but I am not sure if this is allowed in Ubuntu 13.10(64bit). ...
1
vote
1answer
643 views

Generating a hex file(new to ubuntu)

How am I supposed to compile/generate a .hex file (object code) of a c program using a gcc compiler?. Will the procedure be the same for a different gcc compiler compatible with a different processor? ...
1
vote
1answer
3k views

diff between x86_64-linux-gnu-gcc and plain old gcc?

I'm trying to compile something called a "Voice Cloning Toolkit" for Festival and HTS. (see: http://homepages.inf.ed.ac.uk/jyamagis/software/page37/page37.html) I've found that lots of things break ...
1
vote
1answer
4k views

How can i downgrade GCC 4.7.2?

i want to downgrade GCC and G++ 4.7.2 to some older versions, 4.0 perhaps. Any assistance? I'm using Lubuntu ATM.
1
vote
1answer
100 views

What gcc version do I need?

I have installed ns-2.28 on ubuntu 12.04. My kernel version is 3.2.0-29-generic-pae. What gcc version matches my ns-2.28 & 3.2.0-29-generic-pae?
1
vote
2answers
6k views

gcc and g++ are installed but ubuntu says they are not installed

I have installed g++ and gcc from repository on ubuntu 12.04 ad you can see that they are indeed installed mahmood@pc:~$ dpkg -l | grep gcc ii gcc-4.4 4.4.7-1ubuntu2 ...
1
vote
1answer
279 views

Restoring gcc and g++ flags

I've recently done something really stupid: I wanted to configure NetCDF libraries using the Intel Fortran compiler and, therefore, I was following instructions for that kind of procedure. ...
1
vote
1answer
7k views

apt-get gcc 4.7 multilib

I followed the instructions from @jokerdino here in askubuntu sudo add-apt-repository ppa:ubuntu-toolchain-r/test sudo apt-get update sudo apt-get install gcc-4.7 But to get a successful ...
1
vote
1answer
515 views

C programming on Ubuntu

I have problems related to C programming on Ubuntu 12.04. While compiling C program consisting pow I faced difficulties. Then I searched the Internet and got the solution with -lm. But that's the ...
1
vote
1answer
3k views

How to link with libcurl on Pangolin

Since Pangolin, I can't manage to link any program with libcurl, even the example provided with libcurl themselves. I have installed libcurl: sudo apt-get install libcurl4-gnutls-dev Then as the ...
1
vote
1answer
268 views

How to install 64-bit libraries on 32-bit system?

I need to cross-compile for 64-bit architecture on a 32-bit platform (using gcc-multilib and -m64 flag). For this I need to install 64-bit versions of the dependent libraries. How do I do that?
1
vote
3answers
2k views

How can I upgrade sqlite3 to at least 3.4.2 (or newer)?

When I try to run sudo apt-cache showpkg sqlite3, I only get the version 3.4.2. I need later than that to compile the sqlite3-ruby gem, and I can't make from source files (even with a ./configure ...
1
vote
1answer
561 views

GCC headers on Ubuntu

I was wondering, if there was a go to place to look for c headers, and how to get them on Ubuntu, often times a quick Google search gets me the apt-get package. I was wondering if it possible look up ...
1
vote
2answers
6k views

Is itoa() available in stdlib.h in Gcc >=4.1?

that's my question. I've Gcc 4.4.1 and that function isn’t present, i had installed the 4.3 and 4.5 versions with the same result :-/ I know that this function is not the C-ANSI standard, but I ...
1
vote
1answer
31 views

How to reconfigure libtool after upgrading gcc

I am running Ubuntu 12.04 and was hit by this gcc bug. In order to fix this I installed a more recent version of gcc (following this procedure). Now gcc -v and g++ -v both work, but packages that use ...
1
vote
1answer
116 views

Use g++-4.8 with Qt

I am trying to compile a Qt project that uses the "override" keyword, and thus needs GCC 4.8. I have installed GCC 4.8 on my Ubuntu 12.04 machine already, and it lives in /usr/bin as gcc-4.8 and ...
1
vote
1answer
82 views

How to install MIRACL c++ library in Ubuntu 14.04?

I'm trying to install the library from the link https://certivox.org/display/EXT/2.+Installation . But when I try the command: gcc –I. –c –O2 mr*.c I get error saying : gcc: error: /I.: No such ...
1
vote
1answer
646 views

Update GCC compiler in Ubuntu 14.04 to 4.9 [duplicate]

Can I upgrade my GCC compiler now in Ubuntu 14.04? Has the final usable version (4.9) been released?
1
vote
3answers
192 views

Problem installing gcc compiler [closed]

I tried to install gcc compiler because I want to learn programming I have an old computer 1gb ram so I installed an older version of Ubuntu (10.04) and its working faster than before but when I try ...
1
vote
1answer
237 views

Use gcc-4.6-arm-linux-gnueabihf to compile .c file, What is the command?

I am doing cross compiling. I install the gcc-4.6-arm-linux-gnueabihf and want to use it to compile the .c file(example of hello world) and then run it on ARM. I don't know what is the exact command. ...
1
vote
1answer
2k views

How do I use the GTK+ development libraries in Ubuntu?

I've been programming for about a year and a half on Windows and I've just started getting used to the way things work on that platform, but now I'm interested in development on Linux and I've been ...
1
vote
3answers
239 views

Why am I getting these undefined errors when I compile a C++ program in terminal?

I have a C++ program that compiles and runs perfectly in Code Blocks. However when I try to compile it from the terminal using: gcc -g main.cpp -o Main I get a lot of undefined references: And ...