Linking error when build shared lib that linked with another shared lib in Qt
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I have 2 project for each of them is shared lib and I want to link lib 1 to lib 2.
When using build system cmake, i use target_link_libraries
for the first lib is
target_link_libraries (TARGET_NAME_LIB1 PUBLIC Qt5::Core )
and the second lib is
target_link_libraries (TARGET_NAME_LIB2 PUBLIC TARGET_NAME_LIB1 Qt5::Core )
Configure and Generate is done and then build the Solution, the first lib built successfully, but the second isn't because of linking error
public: static struct QMetaObject const ClassNameInLib1::staticMetaObject"
Note: i have read about this issue and i notice that the .h file shouldn't have more than Q_OBJECT and my project's .h have many classes foreach have Q_OBJECT.
for example
in lib1
namespace space1{
class LIB1_EXPORT class1 : public QObject
{
Q_OBJECT
public:
void m1();
};
class LIB1_EXPORT class2 : public QObject
{
Q_OBJECT
public:
void m2();
};
}
and in lib 2
class1 * c1 = new class1();
c++ qt cmake
asked Nov 9 at 12:52
A.El Saeed
5418
add a comment |
up vote
-1
down vote
favorite
I have 2 project for each of them is shared lib and I want to link lib 1 to lib 2.
When using build system cmake, i use target_link_libraries
for the first lib is
target_link_libraries (TARGET_NAME_LIB1 PUBLIC Qt5::Core )
and the second lib is
target_link_libraries (TARGET_NAME_LIB2 PUBLIC TARGET_NAME_LIB1 Qt5::Core )
Configure and Generate is done and then build the Solution, the first lib built successfully, but the second isn't because of linking error
public: static struct QMetaObject const ClassNameInLib1::staticMetaObject"
Note: i have read about this issue and i notice that the .h file shouldn't have more than Q_OBJECT and my project's .h have many classes foreach have Q_OBJECT.
for example
in lib1
namespace space1{
class LIB1_EXPORT class1 : public QObject
{
Q_OBJECT
public:
void m1();
};
class LIB1_EXPORT class2 : public QObject
{
Q_OBJECT
public:
void m2();
};
}
and in lib 2
class1 * c1 = new class1();
c++ qt cmake
asked Nov 9 at 12:52
A.El Saeed
5418
add a comment |
up vote
-1
down vote
favorite
up vote
-1
down vote
favorite
I have 2 project for each of them is shared lib and I want to link lib 1 to lib 2.
When using build system cmake, i use target_link_libraries
for the first lib is
target_link_libraries (TARGET_NAME_LIB1 PUBLIC Qt5::Core )
and the second lib is
target_link_libraries (TARGET_NAME_LIB2 PUBLIC TARGET_NAME_LIB1 Qt5::Core )
Configure and Generate is done and then build the Solution, the first lib built successfully, but the second isn't because of linking error
public: static struct QMetaObject const ClassNameInLib1::staticMetaObject"
Note: i have read about this issue and i notice that the .h file shouldn't have more than Q_OBJECT and my project's .h have many classes foreach have Q_OBJECT.
for example
in lib1
namespace space1{
class LIB1_EXPORT class1 : public QObject
{
Q_OBJECT
public:
void m1();
};
class LIB1_EXPORT class2 : public QObject
{
Q_OBJECT
public:
void m2();
};
}
and in lib 2
class1 * c1 = new class1();
c++ qt cmake
asked Nov 9 at 12:52
A.El Saeed
5418
I have 2 project for each of them is shared lib and I want to link lib 1 to lib 2.
When using build system cmake, i use target_link_libraries
for the first lib is
target_link_libraries (TARGET_NAME_LIB1 PUBLIC Qt5::Core )
and the second lib is
target_link_libraries (TARGET_NAME_LIB2 PUBLIC TARGET_NAME_LIB1 Qt5::Core )
Configure and Generate is done and then build the Solution, the first lib built successfully, but the second isn't because of linking error
public: static struct QMetaObject const ClassNameInLib1::staticMetaObject"
Note: i have read about this issue and i notice that the .h file shouldn't have more than Q_OBJECT and my project's .h have many classes foreach have Q_OBJECT.
for example
in lib1
namespace space1{
class LIB1_EXPORT class1 : public QObject
{
Q_OBJECT
public:
void m1();
};
class LIB1_EXPORT class2 : public QObject
{
Q_OBJECT
public:
void m2();
};
}
and in lib 2
class1 * c1 = new class1();
c++ qt cmake
c++ qt cmake
asked Nov 9 at 12:52
A.El Saeed
5418
asked Nov 9 at 12:52
A.El Saeed
5418
edited Nov 9 at 13:02
asked Nov 9 at 12:52
A.El Saeed
5418
asked Nov 9 at 12:52
A.El Saeed
5418
asked Nov 9 at 12:52
A.El Saeed
5418
5418
add a comment |
add a comment |
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