On 02/09/2011 08:39 PM, Lyre wrote: > I tried to exact an option from php-config using: > > php-config --configure-options | sed -n > 's|.*--with-config-file-scan-dir=\([^ ]*\).*|\1|p' > > It works on shell, and outputs "/etc/php5/conf.d/" on opensuse. > > And I tired it in configure.ac, as following: > > PHPINC=`php-config --includes` > PHPCDIR=`php-config --configure-options | sed -n > 's|.*--with-config-file-scan-dir=\([^ ]*\).*|\1|p'` Is that newline in the middle of your `` an artifact of your mailer, or literally in your configure.ac? If it is in your configure.ac, that would explain the problem, since then there is no argument to sed. But assuming that you had one long line, then I don't see why this would have failed for you. Inside ``, I like using \\ to make it clear where I intend for a literal backslash to be part of the subshell, rather than relying on the fact that \( is not an escape sequence and therefore the \ is not consumed. But whether you use `'\\(\\)\\1'` or `'\(\)\1'`, the result is portably the same (it only matters for \, $, and `). The next thing I would suggest is surrounding that code inside a 'set -vx'/'set +vx' block, and inspecting the output to make sure that the correct command was executed. -- Eric Blake eblake@xxxxxxxxxx +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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