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Questions tagged [gcc]

Questions regarding GNU Compiler Collection Suite.

GNU Compiler Collection, or formerly GNU C Compiler, is a suite of compiler tools for various programming languages like: C, C++, Objective-C, Java, Ada, Fortran, and Go. The GNU Compiler collection had it's first release back in 1987. GCC has been written initially by Richard Stallman and is currently maintained by the Free Software Foundation.

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Why is FreeBSD deprecating GCC in favor of Clang/LLVM?

So I was surfing the net and stumbled upon this article. It basically states that FreeBSD, starting from Version 10 and above will deprecate GCC in favor of Clang/LLVM. From what I have seen around the net so far, Clang/LLVM is a fairly ambitious…
NlightNFotis
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How to compile the C compiler from scratch, then compile Unix/Linux from scratch

Let's say I work for a large services organisation outside the US/UK. We use UNIX and Linux servers extensively. Reading through this article it mentions that it would be easy to insert a backdoor into a C compiler, then any code compiled with that…
David J
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configure: error: C compiler cannot create executables

I am trying to upgrade apache 2.2.15 to 2.2.27. While running config.nice taken from apache2.2.15/build I am getting following error: checking whether the C compiler works... no configure: error: in `/home/vkuser/httpd-2.2.27/srclib/apr': configure:…
Vishal
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How long does it take to compile gcc 7.3.0?

So far it's been running for about 4 hours. One thing to note is that I did not have the prerequisites and had to download them though contrib/download_prerequisites. Not sure if it adds to the compile time or not. Machine specs listed below: 4 CPUs…
Ya.
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How does this Makefile makes C program without even specifying a compiler?

I was using a Makefile from the book "Advanced Linux Programming (2001)" [code]. It was strange for me to see that GNU make does compile the code correctly, without even specifying a compiler in the Makefile. It's like baking without any…
Ho1
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Relationship between cc1 and gcc?

I'm trying to install Ruby in my home directory on a Linux server (without root access), which of course requires using gcc. The closest thing I can find is a directory by that name which (if you go deep enough) contains cc1: >: find / -iname gcc…
iconoclast
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What is the gold linker?

Has anyone used the gold linker before? To link a fairly large project, I had to use this as opposed to the GNU ld, which threw up a few errors and failed to link. How is the gold linker able to link large projects where ld fails? Is there some kind…
placid chat
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Is the standard C library loaded by default in main memory in Linux?

Since the majority of the Linux kernel is written in the C language, so when the kernel gets loaded in Main memory, does the standard C library also get loaded along the Linux kernel? If that's the reason the programs written in C consume less…
Sumit Joshi
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How to install GCC 5 on debian jessie 8.1

I tried many solutions to install update for my gcc compiler on debian server. None of them worked. I need the compiler update to use new features of c++11, as this provides a stable libcxx11 ABI, and stable support for C++11 (refer here).…
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gcc error installing psycopg2 package for python3 on Centos 7.3

As per this answer, I performed a series of prerequisite setups to be ready to pip install python3 packages. However, when I ran python3 -m pip install psycopg2 I got the following error: Downloading/unpacking psycopg2 Downloading…
amphibient
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Compiling GNU/Linux with -O3 optimization

It's said that compiling GNU tools and Linux kernel with -O3 gcc optimization option will produce weird and funky bugs. Is it true? Has anyone tried it or is it just a hoax?
uray
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What sets fs:[0x28] (stack canary)?

From this post it is shown that FS:[0x28] is a stack-canary. I'm generating that same code using GCC on this function, void foo () { char a[500] = {}; printf("%s", a); } Specifically, I'm getting this assembly.. 0x000006b5 …
Evan Carroll
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gcc can't link to pthread?

I have recently installed XUbuntu 11.10 64bit, but I am having problem compiling the most simple pthread example. Here is the code pthread_simple.c: #include #include main() { pthread_t f2_thread, f1_thread; void *f2(),…
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How does gcc know where boost is installed

I installed boost using sudo apt-get install on Ubuntu. Later I did not have to give gcc the I flag alongwith the path to the boost libraries to use boost ! Nor did I do any pkg-config --cflags --libs of any sort. What is the mystery here ? How is…
Chani
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Why gcc show `unknown` in Target: x86_64-unknown-linux-gnu in Arch Linux?

I would like to know why when I run gcc -v under Arch Linux, it shows the unknown word in these outputs: Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/lto-wrapper Target:…
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