Re: Minor but annoying bug in ld.so.conf/ld.so.conf.d parsing in libtool.m4

[Ralf Wildenhues]

Hi Orion,

* Orion Poplawski wrote on Tue, Mar 28, 2006 at 01:07:49AM CEST:
> 
> lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s", \$2)); 
> skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | 
> $SED -e 's/#.*//;s/[:,\t]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr 
> '\n' ' '`
> 
> outputs:
> 
>   cat: ld.so.conf.d/*.conf: No such file or directory
> 
> when /etc/ld.so.conf contains:
> 
> include ld.so.conf.d/*.conf
> 
> and /etc/ld.so.conf.d/ is empty.  So you get:
> 
> checking dynamic linker characteristics... cat: ld.so.conf.d/*.conf: No 
> such file or directory
> GNU/Linux ld.so
> 
> which is kind of annoying though ultimately harmless.

Thanks for reporting this.  How about this instead?

lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", 
\$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | 
$SED -e 's/#.*//;s/[:,\t]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr '\n' ' '`

Please note the \t should be an actual TAB as the former is not
portable sed; and also you'll have encountered the need for M4
escaping within libtool.m4.

Cheers,
Ralf