Ruby on Rails - 安装bdb时出错。未能建立宝石原生扩展

Question

当运行gem install bdb我得到以下错误：

Error installing bdb: 
ERROR: Failed to build gem native extension. 

任何人都知道在哪里可以找到适用于Mac OS X的BDB库？

完整的错误：

Building native extensions. This could take a while... 
ERROR: Error installing bdb: 
ERROR: Failed to build gem native extension. 
... 
checking for db_version() in -ldb-5.1... yes 
Writing bdb_aux._c (defines), this takes a while 
don't know how to handle DB_DEGREE_2 DB_READ_COMMITTED, guessing UINT 
don't know how to handle DB_DIRTY_READ DB_READ_UNCOMMITTED, guessing UINT 
don't know how to handle DB_HEAP_RID_SZ (sizeof(db_pgno_t) + sizeof(db_indx_t)), guessing UINT 

wrote 491 defines 
creating Makefile 

make 
... 
bdb.c:84:1: warning: "eDbE_create" redefined 
bdb.c:50:1: warning: this is the location of the previous definition 
bdb.c: In function ‘assoc_rescue’: 
bdb.c:1200: warning: format not a string literal and no format arguments 
bdb.c: In function ‘assoc_callback’: 
bdb.c:1248: warning: comparison between signed and unsigned 
bdb.c:1249: warning: pointer of type ‘void *’ used in arithmetic 
bdb.c: In function ‘env_set_cachesize’: 
bdb.c:1830: warning: implicit conversion shortens 64-bit value into a 32-bit value 
bdb.c:1831: warning: implicit conversion shortens 64-bit value into a 32-bit value 
bdb.c: In function ‘env_txn_stat’: 
bdb.c:2299: warning: comparison between signed and unsigned 
bdb.c: In function ‘env_repmgr_set_local_site’: 
bdb.c:3005: error: ‘DB_ENV’ has no member named ‘repmgr_set_local_site’ 
bdb.c: In function ‘env_repmgr_add_remote_site’: 
bdb.c:3024: error: ‘DB_ENV’ has no member named ‘repmgr_add_remote_site’ 
bdb.c:3331:1: warning: "eDbE_create" redefined 
bdb.c:84:1: warning: this is the location of the previous definition 
bdb.c:3424:1: warning: "ENV_LOG_CONFIG_FUNC" redefined 
bdb.c:2533:1: warning: this is the location of the previous definition 
make: *** [bdb.o] Error 1 

Answer 1

你看到BDB页面上的说明？

As a Gem

At the moment this library is not available on RubyForge. To install it as a gem, do the following:

[sudo] gem install bdb

For Berkeley DB v4.7 installed from MacPorts do the following:

[sudo] env ARCHFLAGS="-arch i386" gem install bdb This assumes you're on OS X and BerkeleyDB wasn't compiled as a universal binary.

所以它看起来像你需要通过macports/brew安装berkeley db来获取Gem安装。