Freebsd – GCC not runnable on FreeBSD

arbsd-portsfreebsdgcc

I'm trying to run GCC on FreeBSD and I get this error:

% gcc
ar: unrecognized option `--plugin'
usage:  ar -d [-Tjsvz] archive file ...
        ar -m [-Tjsvz] archive file ...
        ar -m [-Tabijsvz] position archive file ...
        ar -p [-Tv] archive [file ...]
        ar -q [-TcDjsvz] archive file ...
        ar -r [-TcDjsuvz] archive file ...
        ar -r [-TabcDijsuvz] position archive file ...
        ar -s [-jz] archive
        ar -t [-Tv] archive [file ...]
        ar -x [-CTouv] archive [file ...]
        ar -V

I have installed the following version of GCC using the binary pkg:

% pkg info gcc
gcc-4.7.3_1
Name           : gcc
Version        : 4.7.3_1
Installed on   : Wed Jun 25 15:22:58 CEST 2014
Origin         : lang/gcc
Architecture   : freebsd:10:x86:64
Prefix         : /usr/local
Categories     : lang java
Licenses       : GPLv3RLE and GPLv3
Maintainer     : gerald@FreeBSD.org
WWW            : http://gcc.gnu.org/
Comment        : GNU Compiler Collection 4.7
Options        :
        BOOTSTRAP      : off
        JAVA           : on

I have installed the port version as well with the same results.

What can possibly be wrong?

Best Answer

Since FreeBSD 10 Clang is the new default compiler.

You could try to compiler your code with Clang or you need to install a GCC version like you did.

But before the switch to Clang, FreeBSD used version 4.2 of GCC and the binary of this GCC was /usr/bin/gcc, so the newer ports of GCC needed to name there binary differently.

Because of that, all GCC ports have a binary called /usr/local/bin/gccXY, where XY is the version number.

When you install gcc4.7 on FreeBSD you don't get a /usr/local/bin/gcc thanks to the old behaviour, instead you get /usr/local/bin/gcc47`.

Long story short, when you want to compile your code with GCC 4.7 you need to use gcc47 and not gcc.

But maybe you should give Clang a try, since it is always a good idea to compile your code with different compilers to see if your code depends on a compiler. Because if it doesn't compile your code is probably broken or you found a compiler bug which is awesome.

Also take a look at Why is FreeBSD deprecating GCC in favor of Clang/LLVM?

Related Solutions

Freebsd – Why does FreeBSD use the GPL-licensed GCC

FreeBSD 10 will use the BSD-licensed Clang compiler instead of GCC for 32- and 64-bit Intel x86 systems. The only thing preventing a wholesale switch on all CPU platforms FreeBSD releases on is developer time and interest.

As for FreeBSD 9 — which was just about to be released when this question was first posed — there was talk about making Clang the default compiler, but there were enough problems with it that they decided to ship Clang alongside GCC, and leave GCC the default for this release.

As for why FreeBSD didn't try moving to a non-GPL compiler years before, or perhaps even create their own, the reason is simple: it's hard.

Any undergrad CS student can write a compiler — it may even be a course requirement — but writing a good compiler is hard. Writing a good compiler is harder still when it needs to be for a language like C or C++. The task becomes still harder when you make the reasonable decision that the new compiler needs to at least approach the performance and capability of GCC, which has a couple of decades worth of development behind it.

Because of that, GCC 4.2 is still the default compiler on FreeBSD 9.

GCC 3.4, 4.4, 4.6, 4.7, and 4.8 are in the FreeBSD 9 Ports tree, by the way, and some version of GCC is likely to remain in Ports for many years to come. There's a lot of software packages out there — many of which are in FreeBSD Ports — which only build with GCC.

Freebsd – How to install the latest gcc on FreeBSD

You can install GCC 4.9 by building it from ports with

cd /usr/ports/lang/gcc49; make install clean

or if you have portmaster

portmaster -DHB lang/gcc49

or if you prefer packages with

pkg install lang/gcc49

If you change lang/gcc49 to lang/gcc you will install the most recent stable version of GCC currently this is GCC 4.7.

When you want to build all your ports with GCC instead of Clang you have to edit /etc/make.conf and add

.if !empty(.CURDIR:M/usr/ports/*) && exists(/usr/local/bin/gcc49)
CC=gcc49
CXX=g++49
CPP=cpp49
.endif

and edit /etc/libmap.conf and add there

libgcc_s.so.1   gcc49/libgcc_s.so.1
libgomp.so.1    gcc49/libgomp.so.1
libobjc.so.3    gcc49/libobjc.so.4
libssp.so.0     gcc49/libssp.so.0
libstdc++.so.6  gcc49/libstdc++.so.6

Here is an article from FreeBSD.org which explains this in more detail.

But you don't really need GCC for the ports, all ports that already depend on GCC will use GCC.

Edit:

And yeah g++ will be installed with all GCC ports.

Best Answer

Related Solutions

Freebsd – Why does FreeBSD use the GPL-licensed GCC

Freebsd – How to install the latest gcc on FreeBSD

Edit:

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