我正在尝试运行bundle exec rake db：migrate并且已经有一段时间了，我一直在遇到这个问题。有任何想法吗？我已经尝试过捆绑安装，捆绑更新等。我已经附加了我的gemfile，所以你可以看到。可能是我的gemfile.lock吗？
sample_app LMagnotti$ bundle exec rake db:migrate
Could not find rake-11.1.2 in any of the sources
Run `bundle install` to install missing gems.
的Gemfile
source 'https://rubygems.org'
gem 'rails', '4.2.2'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.1.0'
gem 'bootstrap-sass', '~> 3.2.0.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 2.0'
gem 'sdoc', '~> 0.4.0'
gem 'pg', '0.18.4'
gem 'rake', '11.1.2'
group :development do
gem 'byebug'
gem 'web-console', '~> 2.0'
gem 'spring'
gem 'sqlite3', '1.3.7'
end
Gemfile Lock
GEM
remote: https://rubygems.org/
specs:
actionmailer (4.2.2)
actionpack (= 4.2.2)
actionview (= 4.2.2)
activejob (= 4.2.2)
mail (~> 2.5, >= 2.5.4)
rails-dom-testing (~> 1.0, >= 1.0.5)
actionpack (4.2.2)
actionview (= 4.2.2)
activesupport (= 4.2.2)
rack (~> 1.6)
rack-test (~> 0.6.2)
rails-dom-testing (~> 1.0, >= 1.0.5)
rails-html-sanitizer (~> 1.0, >= 1.0.1)
actionview (4.2.2)
activesupport (= 4.2.2)
builder (~> 3.1)
erubis (~> 2.7.0)
rails-dom-testing (~> 1.0, >= 1.0.5)
rails-html-sanitizer (~> 1.0, >= 1.0.1)
activejob (4.2.2)
activesupport (= 4.2.2)
globalid (>= 0.3.0)
activemodel (4.2.2)
activesupport (= 4.2.2)
builder (~> 3.1)
activerecord (4.2.2)
activemodel (= 4.2.2)
activesupport (= 4.2.2)
arel (~> 6.0)
activesupport (4.2.2)
i18n (~> 0.7)
json (~> 1.7, >= 1.7.7)
minitest (~> 5.1)
thread_safe (~> 0.3, >= 0.3.4)
tzinfo (~> 1.1)
arel (6.0.3)
binding_of_caller (0.7.2)
debug_inspector (>= 0.0.1)
bootstrap-sass (3.2.0.2)
sass (~> 3.2)
builder (3.2.2)
byebug (9.0.3)
coffee-rails (4.1.1)
coffee-script (>= 2.2.0)
railties (>= 4.0.0, < 5.1.x)
coffee-script (2.4.1)
coffee-script-source
execjs
coffee-script-source (1.10.0)
concurrent-ruby (1.0.2)
debug_inspector (0.0.2)
erubis (2.7.0)
execjs (2.6.0)
globalid (0.3.6)
activesupport (>= 4.1.0)
i18n (0.7.0)
jbuilder (2.4.1)
activesupport (>= 3.0.0, < 5.1)
multi_json (~> 1.2)
jquery-rails (4.1.1)
rails-dom-testing (>= 1, < 3)
railties (>= 4.2.0)
thor (>= 0.14, < 2.0)
json (1.8.3)
loofah (2.0.3)
nokogiri (>= 1.5.9)
mail (2.6.4)
mime-types (>= 1.16, < 4)
mime-types (3.0)
mime-types-data (~> 3.2015)
mime-types-data (3.2016.0221)
mini_portile2 (2.0.0)
minitest (5.8.4)
multi_json (1.12.0)
nokogiri (1.6.7.2)
mini_portile2 (~> 2.0.0.rc2)
pg (0.18.4)
rack (1.6.4)
rack-test (0.6.3)
rack (>= 1.0)
rails (4.2.2)
actionmailer (= 4.2.2)
actionpack (= 4.2.2)
actionview (= 4.2.2)
activejob (= 4.2.2)
activemodel (= 4.2.2)
activerecord (= 4.2.2)
activesupport (= 4.2.2)
bundler (>= 1.3.0, < 2.0)
railties (= 4.2.2)
sprockets-rails
rails-deprecated_sanitizer (1.0.3)
activesupport (>= 4.2.0.alpha)
rails-dom-testing (1.0.7)
activesupport (>= 4.2.0.beta, < 5.0)
nokogiri (~> 1.6.0)
rails-deprecated_sanitizer (>= 1.0.1)
rails-html-sanitizer (1.0.3)
loofah (~> 2.0)
railties (4.2.2)
actionpack (= 4.2.2)
activesupport (= 4.2.2)
rake (>= 0.8.7)
thor (>= 0.18.1, < 2.0)
rake (11.1.2)
rdoc (4.2.2)
json (~> 1.4)
sass (3.4.22)
sass-rails (5.0.4)
railties (>= 4.0.0, < 5.0)
sass (~> 3.1)
sprockets (>= 2.8, < 4.0)
sprockets-rails (>= 2.0, < 4.0)
tilt (>= 1.1, < 3)
sdoc (0.4.1)
json (~> 1.7, >= 1.7.7)
rdoc (~> 4.0)
spring (1.7.1)
sprockets (3.6.0)
concurrent-ruby (~> 1.0)
rack (> 1, < 3)
sprockets-rails (3.0.4)
actionpack (>= 4.0)
activesupport (>= 4.0)
sprockets (>= 3.0.0)
sqlite3 (1.3.7)
thor (0.19.1)
thread_safe (0.3.5)
tilt (2.0.4)
turbolinks (2.5.3)
coffee-rails
tzinfo (1.2.2)
thread_safe (~> 0.1)
uglifier (3.0.0)
execjs (>= 0.3.0, < 3)
web-console (2.3.0)
activemodel (>= 4.0)
binding_of_caller (>= 0.7.2)
railties (>= 4.0)
sprockets-rails (>= 2.0, < 4.0)
PLATFORMS
ruby
DEPENDENCIES
bootstrap-sass (~> 3.2.0.0)
byebug
coffee-rails (~> 4.1.0)
jbuilder (~> 2.0)
jquery-rails
pg (= 0.18.4)
rails (= 4.2.2)
rake (= 11.1.2)
sass-rails (~> 5.0)
sdoc (~> 0.4.0)
spring
sqlite3 (= 1.3.7)
turbolinks
uglifier (>= 1.3.0)
web-console (~> 2.0)
BUNDLED WITH
1.12.0
我去了一个卸载的耙子，然后重新安装。现在当我运行db：migrate时，我看到了这个
sample_app LMagnotti$ bundle exec rake db:migrate
Could not find i18n-0.7.0 in any of the sources
Run `bundle install` to install missing gems.
当我现在运行bundle install时，这就是我所看到的：
An error occurred while installing pg (0.18.4), and Bundler cannot continue.
Make sure that `gem install pg -v '0.18.4'` succeeds before bundling.
然后我安装了它......
Building native extensions. This could take a while...
Successfully installed pg-0.18.4
Parsing documentation for pg-0.18.4
Done installing documentation for pg after 2 seconds
1 gem installed
捆绑更新后，我现在遇到了这个错误：
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: /Users/LMagnotti/workspace/sample_app/vendor/cache/ruby/2.0.0/gems/pg-0.18.4/ext
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby -r ./siteconf20160516-9499-1ex1lm8.rb extconf.rb
checking for pg_config... yes
Using config values from /usr/local/bin/pg_config
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for pg_config_manual.h... yes
checking for PQconnectdb() in -lpq... no
checking for PQconnectdb() in -llibpq... no
checking for PQconnectdb() in -lms/libpq... no
Can't find the PostgreSQL client library (libpq)
*** 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=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
--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}/
--with-pqlib
--without-pqlib
--with-libpqlib
--without-libpqlib
--with-ms/libpqlib
--without-ms/libpqlib
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/LMagnotti/workspace/sample_app/vendor/cache/ruby/2.0.0/extensions/universal-darwin-15/2.0.0/pg-0.18.4/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Users/LMagnotti/workspace/sample_app/vendor/cache/ruby/2.0.0/gems/pg-0.18.4 for inspection.
Results logged to /Users/LMagnotti/workspace/sample_app/vendor/cache/ruby/2.0.0/extensions/universal-darwin-15/2.0.0/pg-0.18.4/gem_make.out
Installing tilt 2.0.4
Installing spring 1.7.1
Installing sqlite3 1.3.7 with native extensions
Installing rdoc 4.2.2
Installing tzinfo 1.2.2
Installing nokogiri 1.6.7.2 with native extensions
Installing rack-test 0.6.3
Installing mime-types 3.0
Installing binding_of_caller 0.7.2 with native extensions
Installing bootstrap-sass 3.2.0.2
Installing coffee-script 2.4.1
Installing uglifier 3.0.0
Installing sprockets 3.6.0
An error occurred while installing pg (0.18.4), and Bundler cannot continue.
Make sure that `gem install pg -v '0.18.4'` succeeds before bundling.
日志然后说：
find_executable: checking for pg_config... -------------------- yes
--------------------
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib -L/usr/local/lib -L. -L/usr/local/lib -arch i386 -arch x86_64 -lruby.2.0.0 -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main(int argc, char **argv)
4: {
5: return 0;
6: }
/* end */
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib -L/usr/local/lib -L. -L/usr/local/lib -arch i386 -arch x86_64 -lruby.2.0.0 -Wl,-rpath,/usr/local/lib -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main() {return 0;}
/* end */
find_header: checking for libpq-fe.h... -------------------- yes
"xcrun clang -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS -arch i386 -arch x86_64 -c conftest.c"
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
/* end */
--------------------
find_header: checking for libpq/libpq-fs.h... -------------------- yes
"xcrun clang -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS -arch i386 -arch x86_64 -c conftest.c"
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq/libpq-fs.h>
/* end */
--------------------
find_header: checking for pg_config_manual.h... -------------------- yes
"xcrun clang -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS -arch i386 -arch x86_64 -c conftest.c"
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <pg_config_manual.h>
/* end */
--------------------
have_library: checking for PQconnectdb() in -lpq... -------------------- no
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib -L/usr/local/lib -L. -L/usr/local/lib -Wl,-rpath,/usr/local/lib -arch i386 -arch x86_64 -lruby.2.0.0 -lpq -lpthread -ldl -lobjc "
ld: warning: ignoring file /usr/local/lib/libpq.dylib, file was built for x86_64 which is not the architecture being linked (i386): /usr/local/lib/libpq.dylib
Undefined symbols for architecture i386:
"_PQconnectdb", referenced from:
_t in conftest-07e7b9.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int t(void) { void ((*volatile p)()); p = (void ((*)()))PQconnectdb; return 0; }
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: printf("%p", &t);
12: }
13:
14: return 0;
15: }
/* end */
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib -L/usr/local/lib -L. -L/usr/local/lib -Wl,-rpath,/usr/local/lib -arch i386 -arch x86_64 -lruby.2.0.0 -lpq -lpthread -ldl -lobjc "
conftest.c:7:27: error: too few arguments to function call, single argument 'conninfo' was not specified
int t(void) { PQconnectdb(); return 0; }
~~~~~~~~~~~ ^
/usr/local/Cellar/postgresql/9.5.2/include/libpq-fe.h:250:1: note: 'PQconnectdb' declared here
extern PGconn *PQconnectdb(const char *conninfo);
^
1 error generated.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int t(void) { PQconnectdb(); return 0; }
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: printf("%p", &t);
12: }
13:
14: return 0;
15: }
/* end */
--------------------
have_library: checking for PQconnectdb() in -llibpq... -------------------- no
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib -L/usr/local/lib -L. -L/usr/local/lib -Wl,-rpath,/usr/local/lib -arch i386 -arch x86_64 -lruby.2.0.0 -llibpq -lpthread -ldl -lobjc "
ld: library not found for -llibpq
clang: error: linker command failed with exit code 1 (use -v to see invocation)
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int t(void) { void ((*volatile p)()); p = (void ((*)()))PQconnectdb; return 0; }
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: printf("%p", &t);
12: }
13:
14: return 0;
15: }
/* end */
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib -L/usr/local/lib -L. -L/usr/local/lib -Wl,-rpath,/usr/local/lib -arch i386 -arch x86_64 -lruby.2.0.0 -llibpq -lpthread -ldl -lobjc "
conftest.c:7:27: error: too few arguments to function call, single argument 'conninfo' was not specified
int t(void) { PQconnectdb(); return 0; }
~~~~~~~~~~~ ^
/usr/local/Cellar/postgresql/9.5.2/include/libpq-fe.h:250:1: note: 'PQconnectdb' declared here
extern PGconn *PQconnectdb(const char *conninfo);
^
1 error generated.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int t(void) { PQconnectdb(); return 0; }
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: printf("%p", &t);
12: }
13:
14: return 0;
15: }
/* end */
--------------------
have_library: checking for PQconnectdb() in -lms/libpq... -------------------- no
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib -L/usr/local/lib -L. -L/usr/local/lib -Wl,-rpath,/usr/local/lib -arch i386 -arch x86_64 -lruby.2.0.0 -lms/libpq -lpthread -ldl -lobjc "
ld: library not found for -lms/libpq
clang: error: linker command failed with exit code 1 (use -v to see invocation)
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int t(void) { void ((*volatile p)()); p = (void ((*)()))PQconnectdb; return 0; }
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: printf("%p", &t);
12: }
13:
14: return 0;
15: }
/* end */
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15 -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 -I. -I/usr/local/Cellar/postgresql/9.5.2/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_SYNC_BUILTINS conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib -L/usr/local/lib -L. -L/usr/local/lib -Wl,-rpath,/usr/local/lib -arch i386 -arch x86_64 -lruby.2.0.0 -lms/libpq -lpthread -ldl -lobjc "
conftest.c:7:27: error: too few arguments to function call, single argument 'conninfo' was not specified
int t(void) { PQconnectdb(); return 0; }
~~~~~~~~~~~ ^
/usr/local/Cellar/postgresql/9.5.2/include/libpq-fe.h:250:1: note: 'PQconnectdb' declared here
extern PGconn *PQconnectdb(const char *conninfo);
^
1 error generated.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int t(void) { PQconnectdb(); return 0; }
8: int main(int argc, char **argv)
9: {
10: if (argc > 1000000) {
11: printf("%p", &t);
12: }
13:
14: return 0;
15: }
/* end */
--------------------
答案 0 :(得分：3)
我认为问题在于以下几点：
Can't find the PostgreSQL client library (libpq)
...
ld: warning: ignoring file /usr/local/lib/libpq.dylib, file was built for x86_64 which is not the architecture being linked (i386): /usr/local/lib/libpq.dylib
libpq是一个操作系统级别的库（而不是Ruby gem），如果你在Linux上，可能需要与yum或apt-get一起安装，可能brew在OS X上运行。例如，在Linux Mint上，它基于Ubuntu，有一个名为postgres-client-9.3的包，我怀疑（但不确定）包含libpq。
根据错误消息，您安装了x86_64（64位）版本的libpq，但您的操作系统架构为i386（32位，我相信）
您是如何安装Postgres客户端库的？它是作为Postgres数据库本身的一部分安装的吗？如果是这样，你是否从网上下载了一个软件包，如果是的话，它是64位软件包吗？你可以去寻找一个32位的软件包，卸载Postgres后重新安装Postgres。