Error安裝PostgreSQL的紅寶石

Question

我想配置一個Rails服務器來使用PostgreSQL，但在安裝postgres gem時卡住了。我已經在機器上成功安裝了PostgreSQL（並且可以將其用於其他應用程序），但在嘗試安裝Ruby代碼時遇到錯誤。

我做的：sudo gem install postgres

，並得到以下的輸出：

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

/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb 
checking for main() in -lpq... yes 
checking for libpq-fe.h... yes 
checking for libpq/libpq-fs.h... yes 
checking for PQsetClientEncoding()... no 
checking for pg_encoding_to_char()... no 
checking for PQfreemem()... no 
checking for PQserverVersion()... no 
checking for PQescapeString()... no 
creating Makefile 

make 
gcc -I. -I. -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin10.0 -I. -DHAVE_LIBPQ_FE_H -DHAVE_LIBPQ_LIBPQ_FS_H -I/Library/PostgreSQL/8.4/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -arch i386 -arch x86_64 -g -Os -pipe -fno-common -DENABLE_DTRACE -fno-common -pipe -fno-common -c libpq-compat.c 
libpq-compat.c: In function ‘PQescapeBytea’: 
libpq-compat.c:104: warning: incompatible implicit declaration of built-in function ‘sprintf’ 
libpq-compat.c: In function ‘PQunescapeBytea’: 
libpq-compat.c:158: warning: incompatible implicit declaration of built-in function ‘strlen’ 
libpq-compat.c: In function ‘PQescapeBytea’: 
libpq-compat.c:104: warning: incompatible implicit declaration of built-in function ‘sprintf’ 
libpq-compat.c: In function ‘PQunescapeBytea’: 
libpq-compat.c:158: warning: incompatible implicit declaration of built-in function ‘strlen’ 
gcc -I. -I. -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin10.0 -I. -DHAVE_LIBPQ_FE_H -DHAVE_LIBPQ_LIBPQ_FS_H -I/Library/PostgreSQL/8.4/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -arch i386 -arch x86_64 -g -Os -pipe -fno-common -DENABLE_DTRACE -fno-common -pipe -fno-common -c postgres.c 
postgres.c:41: error: static declaration of ‘PQserverVersion’ follows non-static declaration 
/Library/PostgreSQL/8.4/include/libpq-fe.h:289: error: previous declaration of ‘PQserverVersion’ was here 
postgres.c: In function ‘Init_postgres’: 
postgres.c:2676: error: ‘pgconn_protocol_version’ undeclared (first use in this function) 
postgres.c:2676: error: (Each undeclared identifier is reported only once 
postgres.c:2676: error: for each function it appears in.) 
postgres.c:2677: error: ‘pgconn_server_version’ undeclared (first use in this function) 
postgres.c:41: error: static declaration of ‘PQserverVersion’ follows non-static declaration 
/Library/PostgreSQL/8.4/include/libpq-fe.h:289: error: previous declaration of ‘PQserverVersion’ was here 
postgres.c: In function ‘Init_postgres’: 
postgres.c:2676: error: ‘pgconn_protocol_version’ undeclared (first use in this function) 
postgres.c:2676: error: (Each undeclared identifier is reported only once 
postgres.c:2676: error: for each function it appears in.) 
postgres.c:2677: error: ‘pgconn_server_version’ undeclared (first use in this function) 
lipo: can't open input file: /var/tmp//ccpTMtE2.out (No such file or directory) 
make: *** [postgres.o] Error 1 


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

我使用的是Mac OS 10.6.4和Postgres 8.4版。

想法在這裏可能會發生什麼或如何解決它？

Answer 1

看起來你正在使用Posgres的EnterpriseDB的分佈，所以你需要做雪豹：

$ export ARCHFLAGS='-arch i386' 
$ sudo gem install pg -- --with-pg-config=/Library/PostgreSQL/8.4/bin/pg_config