Re: crosstool-NG build fails

["Yann E. MORIN" <yann dot morin dot 1998 at anciens dot enib dot fr>]

On Sunday 22 November 2009 22:11:04 piper.guy1 wrote:
> I have done all the instructions as required. But when I
> invoke the build (./ct_ng build) it fails almost
> immediately with this error:
> carl@xu-mobile1:~/felabs/sysdev/toolchain/crosstool-ng-1.5.1$ ./ct-ng build
> [INFO ]? Performing some trivial sanity checks
> [INFO ]? Build started 20091122.141722
> [INFO ]? Building environment variables
> [WARN ]? Directory '/home/carl/src' does not exist. Will not save
> downloaded tarballs to local storage.
> [EXTRA]? Preparing working directories
> [WARN ]? You did not specify the build system. That's OK, I can guess...
> [ERROR]? Missing: 'i486-linux-gnu-g++' or 'i486-linux-gnu-g++' or
> 'g++' : either needed!

The message is quite explicit: you do not have a native g++ compiler
on your host machine. Maybe you need to run:
  apt-get install g++

On my Debian lenny, the g++ C++ compiler is packaged separately from
the gcc C compiler. I guess it's the same for Ubuntu.

> It appears that ct-ng can't find the native GNU compiler on my build
> system. But when I type invoke the compiler directly at the command
> line it has no trouble finding and running it, which tells me that the
> paths are set up correctly I believe.
> 
> carl@xu-mobile1:~/felabs/sysdev/toolchain/crosstool-ng-1.5.1$ gcc -v

This is gcc, not g++. What does running the following says:
  g++ --version

> I even set the path to where gcc is located under the option 'Tools
> prefix' under Toolchain Options, but it still can't build.
> Why can't it resolve the path to where gcc is located?

It's not tring to find 'gcc', but to find 'g++'. Install g++, and try again.

Regards,
Yann E. MORIN.

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