These are the packages that would be merged, in order:
Calculating world dependencies... done!
[ebuild N ] dev-php5/pecl-zip-1.0 0 kB
Total size of downloads: 0 kB
Would you like to merge these packages? [Yes/No] yes
>>> Emerging (1 of 1) dev-php5/pecl-zip-1.0 to /
* zip-1.0.tgz MD5 ;-) ... [ ok ]
* zip-1.0.tgz RMD160 ;-) ... [ ok ]
* zip-1.0.tgz SHA1 ;-) ... [ ok ]
* zip-1.0.tgz SHA256 ;-) ... [ ok ]
* zip-1.0.tgz size ;-) ... [ ok ]
* checking ebuild checksums ;-) ... [ ok ]
* checking auxfile checksums ;-) ... [ ok ]
* checking miscfile checksums ;-) ... [ ok ]
* checking zip-1.0.tgz ;-) ... [ ok ]
>>> Unpacking source...
>>> Unpacking zip-1.0.tgz to /var/tmp/portage/pecl-zip-1.0/work
tar: A lone zero block at 45
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/pecl-zip-1.0/work/zip-1.0 ...
*
* Using dev-lang/php-5.1.6-r6
*
Configuring for:
PHP Api Version: 20041225
Zend Module Api No: 20050922
Zend Extension Api No: 220051025
ac-wrapper: /usr/bin/autoconf-2.13 is missing or not executable.
Please try emerging the correct version of autoconf.
/usr/portage/eclass/php-ext-source-r1.eclass: line 56: ./configure: No such file or directory
!!! ERROR: dev-php5/pecl-zip-1.0 failed.
Call stack:
ebuild.sh, line 1546: Called dyn_compile
ebuild.sh, line 937: Called src_compile
ebuild.sh, line 1255: Called php-ext-pecl-r1_src_compile
php-ext-pecl-r1.eclass, line 40: Called php-ext-source-r1_src_compile
php-ext-source-r1.eclass, line 56: Called die
!!! Unable to configure code to compile
!!! If you need support, post the topmost build error, and the call stack if relevant.