[ruby-it] [Ubuntu] Problema installazione gemma Postgres

[Yuri Redaelli]

Roberto Canella wrote:
> Ciao,
> 
> immagino che tu stia utilizzando un sistema Linux o *x; hai provato a 
> lanciare
> il comando come utente di root (sudo od affini...) ?
> 
> Roberto

Se provo con sudo gem install postgres ottengo:

Building native extensions.  This could take a while...
ERROR:  Error installing postgres:
  ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb
extconf.rb:46: command not found: pg_config --includedir
extconf.rb:53: command not found: pg_config --libdir
checking for main() in -lpq... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
  --with-opt-dir
  --without-opt-dir
  --with-opt-include
  --without-opt-include=${opt-dir}/include
  --with-opt-lib
  --without-opt-lib=${opt-dir}/lib
  --with-make-prog
  --without-make-prog
  --srcdir=.
  --curdir
  --ruby=/usr/bin/ruby1.8
  --with-pgsql-dir
  --without-pgsql-dir
  --with-pgsql-include
  --without-pgsql-include=${pgsql-dir}/include
  --with-pgsql-lib
  --without-pgsql-lib=${pgsql-dir}/lib
  --with-pqlib
  --without-pqlib
Could not find PostgreSQL build environment (libraries & headers): 
Makefile not created


Gem files will remain installed in 
/var/lib/gems/1.8/gems/postgres-0.7.9.2008.01.28 for inspection.
Results logged to 
/var/lib/gems/1.8/gems/postgres-0.7.9.2008.01.28/ext/gem_make.out
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