gccgo failed to complile under MAC OSX

[Constantine Vasil]

I am following instructions for Setting up and using gccgo:

http://golang.org/doc/install/gccgo

svn checkout svn://gcc.gnu.org/svn/gcc/branches/gccgo gccgo
mkdir objdir
cd objdir
../gccgo/configure --prefix=/opt/gccgo --enable-languages=c,c++,go
make
make install

it ran for 2 hours but stopped with this error:

/usr/include/ucontext.h:43:2: error: #error The deprecated ucontext routines require _XOPEN_SOURCE to be defined

 #error The deprecated ucontext routines require _XOPEN_SOURCE to be defined

  ^

make[4]: *** [go-main.o] Error 1

make[3]: *** [all-recursive] Error 1

make[2]: *** [all] Error 2

make[1]: *** [all-target-libgo] Error 2

make: *** [all] Error 2

what is wrong?

[minux]

gccgo doesn't support Mac OS X yet.

[Constantine Vasil]

Thank you.

I am using MAC OSX for Golang development and the upload

to Ubuntu server. 

For my development I am using C++ libraries+SWIG and that is 

why I need to use gccgo in order to test my Golang app.

What do you recommend in this case.

As a side note, I installed GCC 4.7.2  to Ubuntu 12.04 LTS 64-bit.

The default GCC for Ubuntu 12.04 is 4.6.3. How to make the newly

installed  GCC 4.7.2 the default one.

I did executed the command:

sudo apt-get install gccgo

How to make gcc command to use the gcc 4.7.2 by default?

[Ian Lance Taylor]

On Fri, Jan 25, 2013 at 3:56 PM, Constantine Vasil <ths...@gmail.com> wrote:
>
> I am using MAC OSX for Golang development and the upload
> to Ubuntu server.
>
> For my development I am using C++ libraries+SWIG and that is
> why I need to use gccgo in order to test my Golang app.

SWIG does work with the gc compiler (though I'm not sure how well SWIG
works on Mac OS X).

> As a side note, I installed GCC 4.7.2 to Ubuntu 12.04 LTS 64-bit.
> The default GCC for Ubuntu 12.04 is 4.6.3. How to make the newly
> installed GCC 4.7.2 the default one.
>
> I did executed the command:
> sudo apt-get install gccgo
>
> How to make gcc command to use the gcc 4.7.2 by default?

To get 4.7.2, you may have to build gccgo yourself. I don't know if
anybody has made a package for it.

Ian

[minux]

On Sat, Jan 26, 2013 at 9:14 AM, Ian Lance Taylor <ia...@google.com> wrote:

On Fri, Jan 25, 2013 at 3:56 PM, Constantine Vasil <ths...@gmail.com> wrote:
>
> I am using MAC OSX for Golang development and the upload
> to Ubuntu server.
>
> For my development I am using C++ libraries+SWIG and that is
> why I need to use gccgo in order to test my Golang app.

SWIG does work with the gc compiler (though I'm not sure how well SWIG
works on Mac OS X).

Works for Mac OS X 10.6 and 10.7 at least,

there is one issue with 10.8 though:

https://code.google.com/p/go/issues/detail?id=4267 

[Constantine Vasil]

My Mac is under OSX 10.8.2. There error message I reported 

is from it. 

[Constantine Vasil]

I got the gccgo 4.7.2

executing following command:

sudo apt-get install gccgo 

I also updated the gcc to 4.7.2
the issue is with gcc showing ver 4.3 when executed 

as default one. I already have 4.7.2 but cannot make it default.

[speter]

man update-alternatives

--
 
 

[speter]

Scratch that, gcc is not managed by update-alternatives.
Sorry for the noise.

Peter

[minux]

On Sat, Jan 26, 2013 at 11:01 AM, speter <spete...@gmail.com> wrote:

Scratch that, gcc is not managed by update-alternatives.

According to /usr/share/doc/gcc/README.Debian, this choice is deliberate.

And Debian doesn't provide an automatic way to switch the symbol for

/usr/bin/gcc, /usr/bin/g++, and others.

If you really really want to make a non-default gcc as your default gcc on

debian, you can update the symbols /usr/bin/{gcc,g++,cpp,gccgo} etc by

yourself with:

ln -sf gcc-4.7 /usr/bin/gcc

[thstart]

This seems to do it.

How would be the right way to install GCC 4.7.2?

[Ingo Oeser]

I already filed https://bugs.launchpad.net/ubuntu/+source/gccgo-4.7/+bug/1102340 for it.

Workaround which works for me is an executable script called "gccgo" in my $PATH with the following content:

#!/bin/sh

exec /usr/bin/gccgo-4.7 -static-libgcc -B/usr/bin/ld.gold $@

Then e.g. "go get -compiler gccgo launchpad.net/goamz/ec2" should fetch and compile you the ec2 library.

[Constantine Vasil]

Hi Ingo,

Which issue you solved? To build it on Mac OSX?

Best,

--Constantine