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Preparing GCC Build: Difference between revisions
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Replace deprecated enclose attributes
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<noinclude>'''Note that this article is meant to be included into the [[GCC Cross-Compiler]] and [[Building GCC]] as they share this common section.'''</noinclude>
The GNU Compiler Collection is an advanced piece of software with dependencies. You need
* A Unix-like environment (Windows users can use the Windows Subsystem for Linux or Cygwin)
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* Texinfo
* ISL (optional)
=== Installing Dependencies ===
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| Cygwin
| OpenBSD
| Arch
|-
|How to install
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|Cygwin GUI setup
|'''<tt>doas pkg_add</tt> ''foo'''''
|-
|Compiler
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|'''<tt>mingw64-x86_64-gcc-g++</tt>''' / '''<tt>mingw64-i686-gcc-g++</tt>'''
|Preinstalled
|-
|Make
|N/A
|'''<tt>build-essential</tt>'''
|'''<tt>
|'''<tt>make</tt>'''
|'''<tt>make</tt>'''
|Preinstalled
|-
|[https://www.gnu.org/software/bison/ Bison]
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|'''<tt>bison</tt>'''
|?
|'''<tt>base-devel</tt>'''
|-
|[https://github.com/westes/flex Flex]
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|'''<tt>flex</tt>'''
|?
|'''<tt>base-devel</tt>'''
|-
|[https://gmplib.org/ GMP]
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|'''<tt>gmp-devel</tt>'''
|'''<tt>libgmp-devel</tt>'''
|'''<tt>gmp</tt>'''
|'''<tt>gmp</tt>'''
|-
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|'''<tt>libmpc-devel</tt>'''
|'''<tt>libmpc-devel</tt>'''
|'''<tt>libmpc</tt>'''
|'''<tt>libmpc</tt>'''
|-
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|'''<tt>mpfr-devel</tt>'''
|'''<tt>libmpfr-devel</tt>'''
|'''<tt>mpfr</tt>'''
|'''<tt>mpfr</tt>'''
|-
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|'''<tt>texinfo</tt>'''
|'''<tt>texinfo</tt>'''
|'''<tt>base-devel</tt>'''
▲|'''<tt>libcloog-isl-dev</tt>'''
▲|'''<tt>dev--libs/cloog</tt>'''
▲|'''<tt>libcloog-isl-devel</tt>'''
|N/A▼
|-
|[http://isl.gforge.inria.fr/ ISL] (Optional)
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|'''<tt>libisl-dev</tt>'''
|'''<tt>dev-libs/isl</tt>'''
|'''<tt>isl-devel</tt>'''
|'''<tt>libisl-devel</tt>'''
▲|N/A
|N/A
|}
You need to have Texinfo installed to build Binutils. You need to have GMP, MPC, and MPFR installed to build GCC. GCC optionally can make use of the
For instance, you can install '''<tt>libgmp3-dev</tt>''' on Debian by running the shell command: '''<tt>sudo apt install libgmp3-dev</tt>'''
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'''Note:''' Version 5.x (or later) of Texinfo is known to be incompatible with the current Binutils 2.23.2 release (and older). You can check your current version using <tt>makeinfo --version</tt>. If your version is too new and you encounter problems during the build, you will need to either use Binutils 2.24 release (or newer) or install an older version of Texinfo - perhaps through building from source - and add it to your <tt>PATH</tt> prior and during the Binutils build.
'''Note:''' GCC has dropped support for CLooG in the 5.x releases [https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=r5-2770-geae1a5d419d30e], and many distributions have dropped the CLooG package (e.g. Gentoo in December 2022).
'''Note:''' GCC requires at least ISL version 0.15.
'''Note:''' If you are using '''Cygwin''', it is recommended to install the <tt>'''libintl-devel'''</tt> package (I couldn't build a cross-compiler without this package)
=== Downloading the Source Code ===
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Install a new version (compile it yourself or use MacPorts) and add <tt>--with-libiconv-prefix=/opt/local</tt> (or <tt>/usr/local</tt> if you compiled it yourself) to GCC's <tt>./configure</tt> line. Alternatively you may place the libiconv source as gcc-x.y.z/libiconv and it will be compiled as part of the GCC compilation process. (This trick also works for MPFR, GMP, and MPC).
The makefiles of Binutils and GCC use the <
<
# This is only necessary for OS X users running 10.7 or below.
export CC=/usr/bin/gcc-4.2
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export CPP=/usr/bin/cpp-4.2
export LD=/usr/bin/gcc-4.2
</syntaxhighlight>
You will want to unset these exports once you compiled and installed the cross compiler.
'''Note for Lion users:''' If you're on Lion (or above) chances are that you don't have the "real" GCC since Apple removed it from the Xcode package, but you can still install it. You can do it via Homebrew or by compiling from source, both are perfectly described on [
'''Note for Maverick users:''' You can build binutils-2.24 and gcc-4.8.3 (possible other version) with Xcode 5.1.1. Note that building GCC with LLVM is not officially supported and may cause interesting bugs, if you are willing to take this risk and save time building host-gcc just to compile a cross-gcc, follow this.
Install GMP, MPFR, Mpc with [
sudo port install gmp mpfr libmpc
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'''Note:''' There is an issue with port's GMP, so the version from OS X from /usr is used instead.
'''Note2:''' If you still have some errors, try making a case-sensitive APFS disk image using disk utility app and build from there
=== Windows Users ===
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'''Windows Subsystem for Linux (Beta) Note:''' You cannot have your cross compiler in the /mnt/c/ (or /mnt/"x") areas, as trying to compile your cross-compiler there will generate errors, whereas building to $HOME/opt/cross works perfectly. This is fixed with Windows Update KB3176929
=== OpenBSD Users ===
OpenBSD users might need to install "gcc" package from ports because base system's GCC is very outdated. If you want to build GCC, try to use the ports' version instead of the latest version available and apply all patches from ports to your build. Also, if the build fails during compiling lto-plugin, a temporary solution is to disable LTO altogether during configure stage of building GCC by adding <tt>--disable-lto</tt>
[[Category:Compilers]]
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