Question

我正在尝试使用mingw编译器在Windows上编译libaws。在libaws（https://sourceforge.net/projects/libaws/）代码中，我试试这个：

C:/la/include/libaws/config.h:2:0: warning: "WIN32" redefined [enabled by default]
<built-in>:0:0: note: this is the location of the previous definition
In file included from C:/tools/libaws-0.9.2/src/canonizer.h:23:0,
                    from C:\tools\libaws-0.9.2\src\s3\s3connection.cpp:25:
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:62:9: error: expected identifier before '(' token
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:62:9: error: expected '}' before '(' token
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:62:9: error: expected unqualified-id before numeric constant
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:62:9: error: expected ')' before numeric constant
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:70:5: error: expected unqualified-id before 'public'
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:109:19: error: 'ActionType' was not declared in this scope
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:109:43: error: expected primary-expression before 'const'
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:110:19: error: expected primary-expression before 'const'
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:110:51: error: expected primary-expression before 'aExpiration'
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:129:5: error: expected unqualified-id before 'private'
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:135:51: error: 'ActionType' has not been declared
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:139:40: error: variable or field 'setRequestMethod' declared void
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:139:40: error: 'ActionType' was not declared in this scope
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:154:5: error: expected unqualified-id before 'public'
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:161:1: error: expected declaration before '}' token
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:143:7: warning: 'size_t aws::s3::getS3Data(void*, size_t, size_t, void*)' declared 'static' but never defined [-Wunused-function]
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:146:7: warning: 'size_t aws::s3::setCreateBucketData(void*, size_t, size_t, void*)' declared 'static' but never defined [-Wunused-function]
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:149:7: warning: 'size_t aws::s3::setPutData(void*, size_t, size_t, void*)' declared 'static' but never defined [-Wunused-function]
                    C:/tools/libaws-0.9.2/src/s3/s3connection.h:152:7: warning: 'size_t aws::s3::getHeaderData(void*, size_t, size_t, void*)' declared 'static' but never defined [-Wunused-function]
                    src\CMakeFiles\aws.dir\build.make:561: recipe for target 'src/CMakeFiles/aws.dir/s3/s3connection.cpp.obj' failed
                    mingw32-make[2]: *** [src/CMakeFiles/aws.dir/s3/s3connection.cpp.obj] Error 1
                    CMakeFiles\Makefile2:1006: recipe for target 'src/CMakeFiles/aws.dir/all' failed
                    mingw32-make[1]: *** [src/CMakeFiles/aws.dir/all] Error 2
                    Makefile:145: recipe for target 'all' failed
                    mingw32-make: *** [all] Error 2

                    C:\la>

发生这种情况的地方是在一个班级

class S3Connection {
    enum ActionType {
        // VALUES
    };
};

Answer 1

好吧，您显然正在WIN32内重新定义enum。 WIN32是在Windows平台上预定义的。

修改您的日志中实际上有2个错误：

在WIN32中重新定义
config.h，该库实际上指导您如何进行每个平台的配置：

// unset WIN32 for cygwin environment #cmakedefine CYGWIN #ifdef CYGWIN # undef WIN32 #endif

第二个问题在@MichaelBurr回答中指出。

Answer 2

问题是s3connection.h中的一个枚举名称与Win32 SDK中的宏名称冲突。在Win32中，DELETE是用于处理ACL（访问控制列表）的宏。处理这个问题的最佳方法可能是：

#undef DELETE

在包含Windows标头之后以及包含libaws标头之前的某处。

或者修改枚举名称（以及它们可能被使用的任何地方），这样就没有冲突。

请记住，这表明libaws可能没有直接在Windows目标上使用/测试，因此您可能需要支付更多费用才能成为先锋。使用Cygwin而不是MinGW可能会更好运，因为看起来libaws至少在Cygwin平台上完成了一些工作。

枚举不使用Windows7上的mingw编译器使用C ++

2 个答案: