Re: question about how to continue a line of text in AC_MSG_ERROR macro call...

[John Calcote]

Ed,

On 4/21/2009 7:45 AM, Ed Hartnett wrote:
> Howdy all!
>
> I want to put a line break in the error message so that I don't have
> such a long line in my configure.ac file. But if I do this:
>
>        AC_MSG_ERROR([NetCDF-4 requires HDF5, but hdf5.h cannot be found. Try 
> using \
>        the --with-hdf5 option to specify location of HDF5.])
>    
This is actually quite simple: Just wrap the line, with no trailing 
back-slash, like this:

        AC_MSG_ERROR([NetCDF-4 requires HDF5, but hdf5.h cannot be found. Try 
using
the --with-hdf5 option to specify location of HDF5.])


If your text is indented as this one is, simply start the second line in 
the column in which you wish to have it start in the output (column 1 in 
this example). These AC_MSG macros take whatever text you have in 
Autoconf quotes, double-quote it and display it as is, including any 
embedded newlines.

Regards,
John