我正在编译QCAR SDK,但是当我向项目中添加更多框架后,它提示错误。
// Matrices.h
//
#ifndef _QCAR_MATRIX_H_
#define _QCAR_MATRIX_H_
namespace QCAR
{
/// Matrix with 3 rows and 4 columns of float items
struct Matrix34F {
float data[3*4]; ///< Array of matrix items
};
/// Matrix with 4 rows and 4 columns of float items
struct Matrix44F {
float data[4*4]; ///< Array of matrix items
};
} // namespace QCAR
#endif //_QCAR_MATRIX_H_
在行namespace QCAR
, 它说Unknown type name 'namespace'
.
我应该怎么办?
更新:这是构建记录
In file included from ../../build/include/QCAR/Tool.h:18:
In file included from /Users/Raptor.Kwok/Documents/xCodeProjects/qcar-ios-1-0-0/samples/ImageTargets/ImageTargets/EAGLView.h:14:
In file included from /Users/Raptor.Kwok/Documents/xCodeProjects/qcar-ios-1-0-0/samples/ImageTargets/ImageTargets/ImageTargetsAppDelegate.h:9:
In file included from /Users/Raptor.Kwok/Documents/xCodeProjects/qcar-ios-1-0-0/samples/ImageTargets/CouponBook.m:12:
../../build/include/QCAR/Matrices.h:16:1: error: unknown type name 'namespace' [1]
namespace QCAR
^
../../build/include/QCAR/Matrices.h:16:15: error: expected ';' after top level declarator [1]
namespace QCAR
^
;
fix-it:"../../build/include/QCAR/Matrices.h":{16:15-16:15}:";"
In file included from /Users/Raptor.Kwok/Documents/xCodeProjects/qcar-ios-1-0-0/samples/ImageTargets/ImageTargets/ImageTargetsAppDelegate.h:9:
In file included from /Users/Raptor.Kwok/Documents/xCodeProjects/qcar-ios-1-0-0/samples/ImageTargets/CouponBook.m:12:
/Users/Raptor.Kwok/Documents/xCodeProjects/qcar-ios-1-0-0/samples/ImageTargets/ImageTargets/EAGLView.h:52:5: error: type name requires a specifier or qualifier [1]
QCAR::Matrix44F projectionMatrix;
^
/Users/Raptor.Kwok/Documents/xCodeProjects/qcar-ios-1-0-0/samples/ImageTargets/ImageTargets/EAGLView.h:52:10: error: expected expression [1]
QCAR::Matrix44F projectionMatrix;
^
/Users/Raptor.Kwok/Documents/xCodeProjects/qcar-ios-1-0-0/samples/ImageTargets/ImageTargets/EAGLView.h:52:5:{52:5-52:9}: warning: type specifier missing, defaults to 'int' [-Wimplicit-int,3]
QCAR::Matrix44F projectionMatrix;
^~~~
1 warning and 4 errors generated.
您可以使用 .mm 重命名文件,也可以选择 .m 文件并将“文件类型”更改为“Objective-C++ Source”。
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