linux-kernel - Re: cross-compiling on OS X, make menuconfig fails

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Date:	Mon, 28 Apr 2008 20:46:07 +0200
From:	Roland Kuhn <rkuhn@....physik.tu-muenchen.de>
To:	timur@...escale.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: cross-compiling on OS X, make menuconfig fails

Hi Timur!

On 28 Apr 2008, at 03:34, timur@...escale.com wrote:

> I'm trying to cross-compile a PowerPC kernel from an Intel OS X  
> system.  I've almost got it working, except "make menuconfig" dies.   
> It says I'm missing ncurses:
>
> *** Unable to find the ncurses libraries or the
> *** required header files.
> *** 'make menuconfig' requires the ncurses libraries.
>
> However, I do not think that ncurses is the real problem, since I do  
> have ncurses installed.  I think the real problem is that the check- 
> lxdialog.sh is trying to execute this code:
>
> echo -e ' #include CURSES_LOC \n main() {}' | gcc '- 
> DCURSES_LOC=<ncurses.h>' -DLOCALE -DKBUILD_NO_NLS -lncurses -xc - - 
> o .lxdialog.tmp
>
> And the compiler is failing with this output:
>
> <stdin>:1: error: syntax error before ‘-’ token
> <stdin>:1: error: stray ‘#’ in program
>
> So something strange is going on.  Has anyone been able to cross- 
> compile from an Intel Mac running OS X?

For some strange reason Apple decided to change 'echo':

/bin/bash -c 'echo -e ...' does the right thing
/bin/sh -c 'echo -e ...' keeps the "-e" in the output but interprets  
the \n
/bin/echo -e ... does no interpretation and even keeps the \n

I'd recommend installing the coreutils-default package from fink, then  
you get a sane /sw/bin/echo.

Side-note on sanity: ISTR that POSIX defines echo in this (/bin/echo)  
strange way, urging people to use printf instead.

Ciao,
                     Roland

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