操作系统：Ubuntu 15.04（64位）
Ruby版本：ruby 1.9.3p551（2014-11-13修订版48407）[x86_64-linux]
在运行gem install bdb时，我收到以下错误，是否有人可以指出错误的可能原因，或者提供解决方案指针？
Error installing bdb:
Error: Failed to build gem native extension
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
/usr/share/rvm/rubies/ruby-1.9.3-p551/bin/ruby -r ./siteconf20151216-2783-1lobclo.rb extconf.rb
checking for db_version() in -ldb-5.1... no
checking for db_version() in -ldb-5.0... no
checking for db_version() in -ldb-4.9... no
checking for db_version() in -ldb-4.8... no
checking for db_version() in -ldb-4.7... no
checking for db_version() in -ldb-4.6... no
checking for db_version() in -ldb-4.5... no
checking for db_version() in -ldb-4.4... no
checking for db_version() in -ldb-4.3... no
checking for db_version() in -ldb-4.2... no
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 501 defines
creating Makefile
make clean
make
compiling bdb.c
bdb.c: In function ‘raise_error’:
bdb.c:82:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
VALUE cl;
^
bdb.c:84:0: warning: "eDbE_create" redefined
#define eDbE_create(n,c) case DB_##n: cl = eDbE_##c; break;
^
bdb.c:50:0: note: this is the location of the previous definition
#define eDbE_create(n,c) VALUE eDbE_##c;
^
bdb.c: In function ‘db_open’:
bdb.c:266:9: warning: implicit declaration of function ‘raise’ [-Wimplicit-function-declaration]
raise(0, "txn is closed");
^
bdb.c: In function ‘db_get_re_len’:
bdb.c:330:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
int rv = dbh->db->get_re_len(dbh->db,&re_len);
^
bdb.c: In function ‘db_set_encrypt’:
bdb.c:1074:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
u_int32_t flags=0x00000001; //DB_ENCRYPT_AES
^
In file included from /usr/share/rvm/rubies/ruby-1.9.3-p551/include/ruby-1.9.1/ruby.h:32:0,
from ./bdb.h:5,
from bdb.c:8:
bdb.c: In function ‘assoc_rescue’:
/usr/share/rvm/rubies/ruby-1.9.3-p551/include/ruby-1.9.1/ruby/ruby.h:909:30: warning: format not a string literal and no format arguments [-Wformat-security]
#define RSTRING(obj) (R_CAST(RString)(obj))
^
/usr/share/rvm/rubies/ruby-1.9.3-p551/include/ruby-1.9.1/ruby/ruby.h:903:30: note: in definition of macro ‘R_CAST’
#define R_CAST(st) (struct st*)
^
/usr/share/rvm/rubies/ruby-1.9.3-p551/include/ruby-1.9.1/ruby/ruby.h:679:6: note: in expansion of macro ‘RSTRING’
RSTRING(str)->as.heap.ptr)
^
bdb.c:1200:11: note: in expansion of macro ‘RSTRING_PTR’
rb_warn(RSTRING_PTR(message));
^
bdb.c: In function ‘assoc_callback’:
bdb.c:1248:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i=0; i<skey->size; i++) {
^
bdb.c:1249:30: warning: pointer of type ‘void *’ used in arithmetic [-Wpointer-arith]
assoc_key(skey->data + i * sizeof(DBT), (VALUE)RARRAY_PTR(keys)[i]);
^
bdb.c: In function ‘db_stat’:
bdb.c:2141:3: warning: enumeration value ‘DB_HEAP’ not handled in switch [-Wswitch]
switch(dbtype) {
^
bdb.c: In function ‘env_txn_stat’:
bdb.c:2299:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i=0; i<statp->st_nactive; i++) {
^
bdb.c: In function ‘env_get_data_dirs’:
bdb.c:2751:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
VALUE rb_data_dirs = rb_ary_new2(ln);
^
bdb.c: In function ‘env_set_encrypt’:
bdb.c:2912:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
u_int32_t flags=0x00000001; //DB_ENCRYPT_AES
^
bdb.c: In function ‘env_repmgr_set_local_site’:
bdb.c:3005:15: error: ‘DB_ENV’ has no member named ‘repmgr_set_local_site’
rv = eh->env->repmgr_set_local_site(eh->env, StringValuePtr(host), NUM2UINT(port), 0);
^
bdb.c: In function ‘env_repmgr_add_remote_site’:
bdb.c:3024:15: error: ‘DB_ENV’ has no member named ‘repmgr_add_remote_site’
rv = eh->env->repmgr_add_remote_site(eh->env, StringValuePtr(host), NUM2UINT(port), &eidp, 0);
^
bdb.c: In function ‘env_get_lg_bsize’:
bdb.c:3119:3: warning: implicit declaration of function ‘UINT2FIX’ [-Wimplicit-function-declaration]
return UINT2FIX(size);
^
bdb.c: In function ‘Init_bdb’:
bdb.c:3331:0: warning: "eDbE_create" redefined
#define eDbE_create(n,c) eDbE_##c = rb_define_class_under(mBdb, #c, eDbError);
^
bdb.c:84:0: note: this is the location of the previous definition
#define eDbE_create(n,c) case DB_##n: cl = eDbE_##c; break;
^
bdb.c:3424:0: warning: "ENV_LOG_CONFIG_FUNC" redefined
#define ENV_LOG_CONFIG_FUNC(name,cnst) \
^
bdb.c:2533:0: note: this is the location of the previous definition
#define ENV_LOG_CONFIG_FUNC( name, cnst) \
^
Makefile:206: recipe for target 'bdb.o' failed
make: *** [bdb.o] Error 1
make failed, exit code 2