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POUndefined symbols for architecture i386: "_sqlite3_open", referenced from: error
 

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  1. POUndefined symbols for architecture i386: "_sqlite3_open", referenced from: error
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    <p>I have create a database class and packaged some methods. However, once build the project...</p> <pre><code>Undefined symbols for architecture i386: "_sqlite3_open", referenced from: -[MyDataBase openOrCreateDatabase:] in MyDataBase.o "_sqlite3_exec", referenced from: -[MyDataBase createTable:] in MyDataBase.o -[MyDataBase InsertTable:] in MyDataBase.o -[MyDataBase UpdataTable:] in MyDataBase.o -[MyDataBase querryTableByCallBack:] in MyDataBase.o "_sqlite3_close", referenced from: -[MyDataBase closeDatabase] in MyDataBase.o "_sqlite3_get_table", referenced from: -[MyDataBase querryTable:] in MyDataBase.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) </code></pre> <p>here are some critical methods:</p> <p>create the database: </p> <pre><code>-(BOOL)openOrCreateDatabase:(NSString*)dbName { self.m_dbName = dbName; NSArray *path =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES); NSString *documentsDirectory = [path objectAtIndex:0]; if(sqlite3_open([[documentsDirectory stringByAppendingPathComponent:dbName] UTF8String],&amp;m_sql) !=SQLITE_OK) { NSLog(@"创建数据库失败"); return NO; } return YES; } </code></pre> <p>create tables:</p> <pre><code>-(BOOL)createTable:(NSString*)sqlCreateTable { if (![self openOrCreateDatabase:self.m_dbName]) { return NO; } char *errorMsg; if (sqlite3_exec (self.m_sql, [sqlCreateTable UTF8String],NULL, NULL, &amp;errorMsg) != SQLITE_OK) { NSLog(@"创建数据表失败:%s",errorMsg); return NO; } [self closeDatabase]; return YES; } </code></pre> <p>close the database:</p> <pre><code>-(void)closeDatabase { sqlite3_close(self.m_sql); } //insert -(BOOL)InsertTable:(NSString*)sqlInsert { if (![self openOrCreateDatabase:self.m_dbName]) { return NO; } char* errorMsg = NULL; if(sqlite3_exec(self.m_sql, [sqlInsert UTF8String],0, NULL, &amp;errorMsg) ==SQLITE_OK) { [self closeDatabase]; return YES;} else { printf("更新表失败:%s",errorMsg); [self closeDatabase]; return NO; } return YES; } </code></pre> <p>update tables: </p> <pre><code>-(BOOL)UpdataTable:(NSString*)sqlUpdata{ if (![self openOrCreateDatabase:self.m_dbName]) { return NO; } char *errorMsg; if (sqlite3_exec (self.m_sql, [sqlUpdata UTF8String],0, NULL, &amp;errorMsg) !=SQLITE_OK) { [self closeDatabase]; return YES; }else { return NO; } return YES; } </code></pre> <p>select records:</p> <pre><code>-(NSArray*)querryTable:(NSString*)sqlQuerry { if (![self openOrCreateDatabase:self.m_dbName]) { return nil; } int row = 0; int column = 0; char* errorMsg = NULL; char** dbResult = NULL; NSMutableArray* array = [[NSMutableArray alloc] init]; if(sqlite3_get_table(m_sql,[sqlQuerry UTF8String], &amp;dbResult, &amp;row,&amp;column,&amp;errorMsg ) == SQLITE_OK) { if (0 == row) { [self closeDatabase]; return nil; } int index = column; for(int i =0; i &lt; row ; i++ ) { NSMutableDictionary* dic = [[NSMutableDictionary alloc] init]; for(int j =0 ; j &lt; column; j++ ) { if (dbResult[index]) { NSString* value = [[NSString alloc] initWithUTF8String:dbResult[index]]; NSString* key = [[NSString alloc] initWithUTF8String:dbResult[j]]; [dic setObject:value forKey:key]; [value release]; [key release]; } index ++; } [array addObject:dic]; [dic release]; } }else { printf("%s",errorMsg); [self closeDatabase]; return nil; } [self closeDatabase]; return [array autorelease]; } </code></pre>
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    1. USNJUHOBBY
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      1. POUndefined symbols for architecture i386: "_sqlite3_open", referenced from: error
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    1. CODid you link sqlite3.dylib?
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      1. POUndefined symbols for architecture i386: "_sqlite3_open", referenced from: error
      1. USRichard J. Ross III
 

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