Merge pull request #406 Dllexport import from pierre-aimi/dllexport_i…

…mport

CMakeLists.txt

@@ -213,6 +213,13 @@ if (SQLITE_USE_LEGACY_STRUCT)
     target_compile_definitions(SQLiteCpp PUBLIC SQLITE_USE_LEGACY_STRUCT)
 endif (SQLITE_USE_LEGACY_STRUCT)
 
+if(BUILD_SHARED_LIBS)
+    if(WIN32)
+        add_definitions("-DSQLITECPP_COMPILE_DLL")
+        target_compile_definitions(SQLiteCpp PRIVATE "SQLITECPP_DLL_EXPORT")
+    endif()
+endif()
+
 option(SQLITE_OMIT_LOAD_EXTENSION "Enable omit load extension" OFF)
 if (SQLITE_OMIT_LOAD_EXTENSION)
     # Enable the user definition of load_extension().
@@ -402,8 +409,10 @@ endif (SQLITECPP_RUN_DOXYGEN)
 
 option(SQLITECPP_BUILD_EXAMPLES "Build examples." OFF)
 if (SQLITECPP_BUILD_EXAMPLES)
+
     # add the basic example executable
     add_executable(SQLiteCpp_example1 ${SQLITECPP_EXAMPLES})
+
     target_link_libraries(SQLiteCpp_example1 SQLiteCpp)
     if (MSYS OR MINGW)
         target_link_libraries(SQLiteCpp_example1 ssp)

include/SQLiteCpp/Backup.h

@@ -11,6 +11,7 @@
  */
 #pragma once
 
+#include <SQLiteCpp/SQLiteCppExport.h>
 #include <SQLiteCpp/Database.h>
 
 #include <string>
@@ -31,7 +32,7 @@ namespace SQLite
  * See also the a reference implementation of live backup taken from the official site:
  * https://www.sqlite.org/backup.html
  */
-class Backup
+class SQLITECPP_API Backup
 {
 public:
     /**

include/SQLiteCpp/Column.h

@@ -10,6 +10,7 @@
  */
 #pragma once
 
+#include <SQLiteCpp/SQLiteCppExport.h>
 #include <SQLiteCpp/Statement.h>
 #include <SQLiteCpp/Exception.h>
 
@@ -22,11 +23,11 @@ struct sqlite3_stmt;
 namespace SQLite
 {
 
-extern const int INTEGER;   ///< SQLITE_INTEGER
-extern const int FLOAT;     ///< SQLITE_FLOAT
-extern const int TEXT;      ///< SQLITE_TEXT
-extern const int BLOB;      ///< SQLITE_BLOB
-extern const int Null;      ///< SQLITE_NULL
+SQLITECPP_API extern const int INTEGER;   ///< SQLITE_INTEGER
+SQLITECPP_API extern const int FLOAT;     ///< SQLITE_FLOAT
+SQLITECPP_API extern const int TEXT;      ///< SQLITE_TEXT
+SQLITECPP_API extern const int BLOB;      ///< SQLITE_BLOB
+SQLITECPP_API extern const int Null;      ///< SQLITE_NULL
 
 /**
  * @brief Encapsulation of a Column in a row of the result pointed by the prepared Statement.
@@ -44,7 +45,7 @@ extern const int Null;      ///< SQLITE_NULL
  *    because of the way it shares the underling SQLite precompiled statement
  *    in a custom shared pointer (See the inner class "Statement::Ptr").
  */
-class Column
+class SQLITECPP_API Column
 {
 public:
     /**
@@ -241,7 +242,7 @@ class Column
  *
  * @return  Reference to the stream used
  */
-std::ostream& operator<<(std::ostream& aStream, const Column& aColumn);
+SQLITECPP_API std::ostream& operator<<(std::ostream& aStream, const Column& aColumn);
 
 #if __cplusplus >= 201402L || (defined(_MSC_VER) && _MSC_VER >= 1900) // c++14: Visual Studio 2015
 

include/SQLiteCpp/Database.h

@@ -10,6 +10,7 @@
  */
 #pragma once
 
+#include <SQLiteCpp/SQLiteCppExport.h>
 #include <SQLiteCpp/Column.h>
 
 // c++17: MinGW GCC version > 8
@@ -84,37 +85,37 @@ namespace SQLite
 // Those public constants enable most usages of SQLiteCpp without including <sqlite3.h> in the client application.
 
 /// The database is opened in read-only mode. If the database does not already exist, an error is returned.
-extern const int OPEN_READONLY;     // SQLITE_OPEN_READONLY
+SQLITECPP_API extern const int OPEN_READONLY;     // SQLITE_OPEN_READONLY
 /// The database is opened for reading and writing if possible, or reading only if the file is write protected
 /// by the operating system. In either case the database must already exist, otherwise an error is returned.
-extern const int OPEN_READWRITE;    // SQLITE_OPEN_READWRITE
+SQLITECPP_API extern const int OPEN_READWRITE;    // SQLITE_OPEN_READWRITE
 /// With OPEN_READWRITE: The database is opened for reading and writing, and is created if it does not already exist.
-extern const int OPEN_CREATE;       // SQLITE_OPEN_CREATE
+SQLITECPP_API extern const int OPEN_CREATE;       // SQLITE_OPEN_CREATE
 /// Enable URI filename interpretation, parsed according to RFC 3986 (ex. "file:data.db?mode=ro&cache=private")
-extern const int OPEN_URI;          // SQLITE_OPEN_URI
+SQLITECPP_API extern const int OPEN_URI;          // SQLITE_OPEN_URI
 /// Open in memory database
-extern const int OPEN_MEMORY;       // SQLITE_OPEN_MEMORY
+SQLITECPP_API extern const int OPEN_MEMORY;       // SQLITE_OPEN_MEMORY
 /// Open database in multi-thread threading mode
-extern const int OPEN_NOMUTEX;      // SQLITE_OPEN_NOMUTEX
+SQLITECPP_API extern const int OPEN_NOMUTEX;      // SQLITE_OPEN_NOMUTEX
 /// Open database with thread-safety in serialized threading mode
-extern const int OPEN_FULLMUTEX;    // SQLITE_OPEN_FULLMUTEX
+SQLITECPP_API extern const int OPEN_FULLMUTEX;    // SQLITE_OPEN_FULLMUTEX
 /// Open database with shared cache enabled
-extern const int OPEN_SHAREDCACHE;  // SQLITE_OPEN_SHAREDCACHE
+SQLITECPP_API extern const int OPEN_SHAREDCACHE;  // SQLITE_OPEN_SHAREDCACHE
 /// Open database with shared cache disabled
-extern const int OPEN_PRIVATECACHE; // SQLITE_OPEN_PRIVATECACHE
+SQLITECPP_API extern const int OPEN_PRIVATECACHE; // SQLITE_OPEN_PRIVATECACHE
 /// Database filename is not allowed to be a symbolic link (Note: only since SQlite 3.31.0 from 2020-01-22)
-extern const int OPEN_NOFOLLOW;     // SQLITE_OPEN_NOFOLLOW
+SQLITECPP_API extern const int OPEN_NOFOLLOW;     // SQLITE_OPEN_NOFOLLOW
 
 
-extern const int OK;                ///< SQLITE_OK (used by check() bellow)
+SQLITECPP_API extern const int OK;                ///< SQLITE_OK (used by check() bellow)
 
-extern const char* const VERSION;        ///< SQLITE_VERSION string from the sqlite3.h used at compile time
-extern const int         VERSION_NUMBER; ///< SQLITE_VERSION_NUMBER from the sqlite3.h used at compile time
+SQLITECPP_API extern const char* const VERSION;        ///< SQLITE_VERSION string from the sqlite3.h used at compile time
+SQLITECPP_API extern const int         VERSION_NUMBER; ///< SQLITE_VERSION_NUMBER from the sqlite3.h used at compile time
 
 /// Return SQLite version string using runtime call to the compiled library
-const char* getLibVersion() noexcept;
+SQLITECPP_API const char* getLibVersion() noexcept;
 /// Return SQLite version number using runtime call to the compiled library
-int   getLibVersionNumber() noexcept;
+SQLITECPP_API int   getLibVersionNumber() noexcept;
 
 // Public structure for representing all fields contained within the SQLite header.
 // Official documentation for fields: https://www.sqlite.org/fileformat.html#the_database_header
@@ -160,7 +161,7 @@ struct Header {
  *    because of the way it shares the underling SQLite precompiled statement
  *    in a custom shared pointer (See the inner class "Statement::Ptr").
  */
-class Database
+class SQLITECPP_API Database
 {
     friend class Statement; // Give Statement constructor access to the mSQLitePtr Connection Handle
 
@@ -265,7 +266,7 @@ class Database
     // Deleter functor to use with smart pointers to close the SQLite database connection in an RAII fashion.
     struct Deleter
     {
-        void operator()(sqlite3* apSQLite);
+        SQLITECPP_API void operator()(sqlite3* apSQLite);
     };
 
     /**

include/SQLiteCpp/Exception.h

@@ -10,6 +10,7 @@
  */
 #pragma once
 
+#include <SQLiteCpp/SQLiteCppExport.h>
 #include <stdexcept>
 #include <string>
 
@@ -23,7 +24,7 @@ namespace SQLite
 /**
  * @brief Encapsulation of the error message from SQLite3, based on std::runtime_error.
  */
-class Exception : public std::runtime_error
+class SQLITECPP_API Exception : public std::runtime_error
 {
 public:
     /**

include/SQLiteCpp/SQLiteCpp.h

@@ -18,6 +18,7 @@
 
 
 // Include useful headers of SQLiteC++
+#include <SQLiteCpp/SQLiteCppExport.h>
 #include <SQLiteCpp/Assertion.h>
 #include <SQLiteCpp/Exception.h>
 #include <SQLiteCpp/Database.h>
@@ -42,3 +43,5 @@
  */
 #define SQLITECPP_VERSION           "3.02.01"   // 3.2.1
 #define SQLITECPP_VERSION_NUMBER     3002001    // 3.2.1
+
+

include/SQLiteCpp/SQLiteCppExport.h

@@ -0,0 +1,40 @@
+/**
+ * @file    SQLiteCppExport.h
+ * @ingroup SQLiteCpp
+ * @brief   File with macros needed in the generation of Windows DLLs
+ *
+ *
+ * Copyright (c) 2012-2022 Sebastien Rombauts (sebastien.rombauts@gmail.com)
+ *
+ * Distributed under the MIT License (MIT) (See accompanying file LICENSE.txt
+ * or copy at http://opensource.org/licenses/MIT)
+ */
+
+#pragma once
+
+/*
+* #define SQLITECPP_COMPILE_DLL to compile a DLL under Windows
+* #define SQLITECPP_EXPORT to export symbols when creating the DLL, otherwise it defaults to importing symbols
+*/
+
+/* Windows DLL export/import */
+#if defined(_WIN32)&& !defined(__GNUC__) && defined(SQLITECPP_COMPILE_DLL)
+    #if SQLITECPP_DLL_EXPORT
+        #define SQLITECPP_API __declspec(dllexport)
+        #pragma message("Exporting symbols")
+    #else
+        #define SQLITECPP_API __declspec(dllimport)
+        #pragma message("Importing symbols")
+    #endif    
+#else    
+    #if __GNUC__ >= 4
+        #define SQLITECPP_API __attribute__ ((visibility ("default")))
+    #else
+        #define SQLITECPP_API
+    #endif
+#endif
+
+#if defined(WIN32) && defined(SQLITECPP_COMPILE_DLL)
+    #pragma warning( disable : 4251 )
+    #pragma warning( disable : 4275 )
+#endif

include/SQLiteCpp/Savepoint.h

@@ -12,6 +12,7 @@
  */
 #pragma once
 
+#include <SQLiteCpp/SQLiteCppExport.h>
 #include <SQLiteCpp/Exception.h>
 
 namespace SQLite
@@ -53,7 +54,7 @@ class Database;
  *    because of the way it shares the underling SQLite precompiled statement
  *    in a custom shared pointer (See the inner class "Statement::Ptr").
  */
-class Savepoint
+class SQLITECPP_API Savepoint
 {
 public:
     /**

include/SQLiteCpp/Statement.h

@@ -10,6 +10,7 @@
  */
 #pragma once
 
+#include <SQLiteCpp/SQLiteCppExport.h>
 #include <SQLiteCpp/Exception.h>
 #include <SQLiteCpp/Utils.h> // SQLITECPP_PURE_FUNC
 
@@ -30,7 +31,7 @@ namespace SQLite
 class Database;
 class Column;
 
-extern const int OK; ///< SQLITE_OK
+SQLITECPP_API extern const int OK; ///< SQLITE_OK
 
 /**
  * @brief RAII encapsulation of a prepared SQLite Statement.
@@ -49,7 +50,7 @@ extern const int OK; ///< SQLITE_OK
  *    because of the way it shares the underling SQLite precompiled statement
  *    in a custom shared pointer (See the inner class "Statement::Ptr").
  */
-class Statement
+class SQLITECPP_API Statement
 {
 public:
     /**

include/SQLiteCpp/Transaction.h

@@ -10,6 +10,7 @@
  */
 #pragma once
 
+#include <SQLiteCpp/SQLiteCppExport.h>
 #include <SQLiteCpp/Exception.h>
 
 
@@ -50,7 +51,7 @@ enum class TransactionBehavior {
  *    because of the way it shares the underling SQLite precompiled statement
  *    in a custom shared pointer (See the inner class "Statement::Ptr").
  */
-class Transaction
+class SQLITECPP_API Transaction
 {
 public:
     /**