Gcc linux проверить версию

How to Check the Version of my gcc?

Above is the first error in my build log. I didn’t try to compile glibc/gcc myself, and I installed them via yum. One fishy thing I found is:

$ ll /usr/include/c++/ total 4 drwxr-xr-x. 12 root root 4096 Dec 17 14:16 4.8.2 lrwxrwxrwx 1 root root 5 Dec 17 14:16 4.8.5 -> 4.8.2 $ 

$ yum info gcc-c++ Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: centos.uhost.hk * epel: mirrors.hustunique.com * extras: centos.uhost.hk * updates: centos.uhost.hk Installed Packages Name : gcc-c++ Arch : x86_64 Version : 4.8.5 Release : 4.el7 Size : 16 M Repo : installed From repo : base Summary : C++ support for GCC URL : http://gcc.gnu.org License : GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions and LGPLv2+ and BSD Description : This package adds C++ support to the GNU Compiler Collection. : It includes support for most of the current C++ specification, : including templates and exception handling. 

Any idea how to verify the headers in /usr/include/c++/4.8.2 is indeed from 4.8.5 package? Thanks in advance. P.S. I think probably glibc is irrelevant but here is the info:

$ ldd --version ldd (GNU libc) 2.17 Copyright (C) 2012 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Written by Roland McGrath and Ulrich Drepper. 

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How to Check GCC Version on Ubuntu

When working with C and C++ programming languages, it is essential to use a compatible compiler that supports the desired language features and optimizes the code accordingly. GCC, the GNU Compiler Collection, is a popular choice for compiling C, C++, Objective-C, Fortran, Ada, and other languages. It is crucial to know the version of GCC installed on your Ubuntu system to ensure that it supports the code you are working with, especially when dealing with recent language features or libraries.

In this guide, we will walk you through the process of checking the GCC version on an Ubuntu system. By following these steps, you will be able to determine if your system has the appropriate version of GCC installed and if an upgrade or downgrade is necessary to meet your development needs.

Open the Terminal

To begin, open the terminal application on your Ubuntu system. You can either search for “Terminal” in the applications menu or press Ctrl + Alt + T to open a new terminal window.

Option 1: “gcc –version”

Once the terminal is open, enter the following command to check the installed GCC version:

This command will display the current GCC version installed on your system, along with additional information about the compiler.

ehowstuff@ubuntu14:~$ gcc --version gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2 Copyright (C) 2013 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Option 2: “gcc -v”

Alternatively, you can type “gcc -v” command:

ehowstuff@ubuntu14:~$ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.2-19ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)

The “gcc -v” command provides more detailed information about your GCC installation compared to “gcc –version”. When you execute this command, it displays information about the compiler’s configuration, including the target system, supported languages, and the options used during the compilation process. This information can be helpful if you need to know the specifics of your GCC installation, such as the target architecture or enabled features.

Option 3: “aptitude show gcc”

Another alternative is to execute “aptitude show gcc” command:

ehowstuff@ubuntu14:~$ aptitude show gcc Package: gcc State: installed Automatically installed: yes Version: 4:4.8.2-1ubuntu6 Priority: optional Section: devel Maintainer: Ubuntu Developers Architecture: amd64 Uncompressed Size: 42.0 k Depends: cpp (>= 4:4.8.2-1ubuntu6), gcc-4.8 (>= 4.8.2-5~) Recommends: libc6-dev | libc-dev Suggests: gcc-multilib, make, manpages-dev, autoconf, automake1.9, libtool, flex, bison, gdb, gcc-doc Conflicts: gcc-doc (< 1:2.95.3), gcc-doc (< 1:2.95.3), gcc Provides: c-compiler Description: GNU C compiler This is the GNU C compiler, a fairly portable optimizing compiler for C. This is a dependency package providing the default GNU C compiler.

The "aptitude show gcc" command gives you information about the GCC package from the package manager's perspective. Aptitude is a package manager used in Debian and Ubuntu systems, and the command provides details such as the package version, dependencies, a description of the package, and its file size. This information can be useful when managing software packages on your system, especially when dealing with dependencies or determining which version of GCC is available through the package manager.

Commands and Functions:

• gcc - The GNU Compiler Collection command
• --version - An option that displays the version information of the installed GCC
• gcc -v - This command displays verbose information about the installed GCC version, including the configuration options used during the compilation process, supported languages, and the target architecture.
• aptitude show gcc - This command provides detailed package information for the installed GCC compiler, including package version, dependencies, description, and file size. Aptitude is a package manager for Debian and Ubuntu systems that simplifies the management of software packages.

Conclusion

By following these steps, you have successfully checked the GCC version on your Ubuntu system. With this information, you can now determine whether your current GCC installation meets the requirements for your development projects. If necessary, you can upgrade or downgrade your GCC installation to a version that supports the desired language features and optimizations.

We hope this guide has been helpful in learning how to check the GCC version on your Ubuntu system. If you have any suggestions or improvements, please feel free to leave a comment below.

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Check C++ Compiler Version in Linux

This article is about checking the version of the C++ compiler installed on your Linux operating System. Moreover, we will also explore the activation process of C++ 11, the latest version of C++, while writing this article.

Check C++ Compiler Version in Linux

What is GCC compiler? The GCC is an acronym for GNU Compiler Collection. It is a compiler that can compile mainly C and C++ codes but can also be used for Objective C and Objective C++.

GCC provides two different commands for the compilation of C and C++ codes. The gcc command is for the compilation of C programs, and the g++ command is for the compilation of C++ programs.

There are different versions of the compilers installed on your system. We can find out the version of the compiler using the following command:

It will give the version details of the GCC compiler installed on your system.

If you are using a g++ compiler, then you will use the following command:

It will give the details of the g++ compiler version installed on your system.

However, if you are using C++ 11, the latest version of C++ language, you need to activate that in the g++ compiler. C++ 11 is not the version of the compiler but the version of C++ standard; therefore, to fully use its features, you need to activate it using the following command:

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How to know the gcc version used to build the linux?

I use OpenWRT. it's a linux distribution for embedded systems I want to know the gcc version used to compile the linux I made some researchs in the net but without results. I tried to execute these commands for some existing binary in the linux OpenWRT (like wget)

strings -a | grep "GCC" strings -a | grep "gcc" 

strings -a /lib/libgcc_s.so.1 | grep "gcc" strings -a /lib/libuClibc-0.9.30.1.so | grep "gcc" 

does not give any result Are there a way to know used gcc to build the whole linux (For both user space and kernel space)?

There is no way to determine which gcc is used to build the "whole linux". Each executable may have been built with a different gcc, or even a library within the executable was built with one gcc, or it may not have even been a C program at all (C++, Fortran, Java (with gcj), etc).

2 Answers 2

For programs, it appears in the .comment section of ELF executables, if your system is using ELF.

$ cat main.c int main() < >$ gcc main.c $ objdump -s -j .comment a.out a.out: file format elf64-x86-64 Contents of section .comment: 0000 00474343 3a202844 65626961 6e20342e .GCC: (Debian 4. 0010 372e322d 35292034 2e372e32 00474343 7.2-5) 4.7.2.GCC 0020 3a202844 65626961 6e20342e 342e372d : (Debian 4.4.7- 0030 33292034 2e342e37 00 3) 4.4.7.

The compiler used to compile the kernel is available from the string in /proc/version , for example:

$ cat /proc/version Linux version 3.8.5 (. ) (gcc version 4.7.2 (Debian 4.7.2-5) ) .

A major caveat

The .comment section is optional. Many distributions will strip it from the executable when the executable is bundled into a package. The section will be placed in a separate debug package.

$ objdump -s -j .comment /usr/lib/x86_64-linux-gnu/libcurl.so.4.2.0 /usr/lib/x86_64-linux-gnu/libcurl.so.4.2.0: file format elf64-x86-64 objdump: section '.comment' mentioned in a -j option, but not found in any input file

After installing the libcurl3-dbg package, we get an image with the stripped sections by following the GNU debug link:

$ objdump -s -j .comment \ /usr/lib/debug/.build-id/8c/4ae0ad17a4e76bab47c487047490061bd49de3.debug /usr/lib/debug/.build-id/8c/4ae0ad17a4e76bab47c487047490061bd49de3.debug: file format elf64-x86-64 Contents of section .comment: 0000 4743433a 20284465 6269616e 20342e37 GCC: (Debian 4.7 0010 2e322d35 2920342e 372e3200 .2-5) 4.7.2.

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gcc Getting started with gcc Determine gcc version

When referring to gcc's documentation, you should know which version of gcc you are running. The GCC project has a manual for each version of gcc which includes features that are implemented in that version. Use the '-v' option to determine the version of gcc you are running.

Using built-in specs. COLLECT_GCC=/usr/bin/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/5.3.1/lto-wrapper Target: x86_64-redhat-linux Configured with: ../configure --enable-bootstrap --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin --enable-initfini-array --disable-libgcj --with-default-libstdcxx-abi=gcc4-compatible --with-isl --enable-libmpx --enable-gnu-indirect-function --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 5.3.1 20160406 (Red Hat 5.3.1-6) (GCC) 

In this example we see that we are running gcc version 5.3.1. You would then know to refer to the GCC 5.3 manual. It is also helpful to include your gcc version when asking questions in case you have a version specific problem.

PDF - Download gcc for free

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