環境
Vagrant + Ubuntu 16.04.5 LTS
Rails 5.2.4.2
やった事
DBにpostgresqlを指定して、rails newをすると、エラーが出てきてしまいました。
$rails new test_postgre -d postgresql
Fetching pg 1.1.4
Installing pg 1.1.4 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/pg-1.1.4/ext
/home/vagrant/.rbenv/versions/2.5.1/bin/ruby -r ./siteconf20190920-2701-1dz6d99.rb extconf.rb
checking for pg_config... yes
Using config values from /usr/bin/pg_config
You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for
building a client-side application.
You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for
building a client-side application.
checking for libpq-fe.h... no
Can't find the 'libpq-fe.h header
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/home/vagrant/.rbenv/versions/2.5.1/bin/$(RUBY_BASE_NAME)
--with-pg
--without-pg
--enable-windows-cross
--disable-windows-cross
--with-pg-config
--without-pg-config
--with-pg_config
--without-pg_config
--with-pg-dir
--without-pg-dir
--with-pg-include
--without-pg-include=${pg-dir}/include
--with-pg-lib
--without-pg-lib=${pg-dir}/lib
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/extensions/x86_64-linux/2.5.0-static/pg-1.1.4/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/pg-1.1.4 for inspection.
Results logged to
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/extensions/x86_64-linux/2.5.0-static/pg-1.1.4/gem_make.out
An error occurred while installing pg (1.1.4), and Bundler cannot continue.
Make sure that `gem install pg -v '1.1.4' --source 'https://rubygems.org/'` succeeds before
bundling.
In Gemfile:
pg
run bundle exec spring binstub --all
Could not find gem 'pg (< 2.0, >= 0.18)' in any of the gem sources listed in your Gemfile.
Run `bundle install` to install missing gems.
どうも、libpq-dev関連のエラーっぽい。
libpq-devとは、PostgreSQLを使う時は必須になるライブラリーのようです。
libpq-devの最新版をインストールすると回避できました。
インストールには相当時間がかかります。
$sudo apt install libpq-dev