I want to use C++ in SDK 7200 in my project,
base on a demo provide by TI's support , i have some questions as follows:
1 about the Compiler options
in a C and C++ mixed project,
for a c file , use -fg
fro a cpp file ,use -c++14 –fg
is it right ?
all files are identified as cpp file, is it ok?
beside c++14 , is there other options supported by ti-cgt-arm_20.2.0.LTS ?
2 it is only libc.a in ti-cgt-arm_20.2.0.LTS ,
is there any libc++.a ?
3. I defined a global variable ,
， CStudent g_cstu; this will give link error：
<Linking>
error: creating output section ".init_array" without a SECTIONS specification
error: errors encountered during linking;
"C:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packag
es/ti/binary/udma_baremetal_memcpy_testapp/bin/j7200_evm/udma_baremetal_memc
py_testapp_mcu1_0_debug.xer5f" not built
>> Compilation failure
can you kindly help me to fix it ?
- 关于编译选项，
main_baremetal.c 文件的编译， 原来用的是 –fc， 改后，用的是 –fg
CStudent.cpp 用的是 -c++14 –fg
我的问题，如下处理是否正确？：
如果有C 和C++ 的混合项目， 不管是 c 还是cpp 后缀，都用 -fg ， 也就是都视为C++ 文件，因为但看文件名也不能判断里面是否是C还是Cpp语法。
如果是cpp后缀，再增加 -c++14
- 关于链接，
log中的链接如下， 语言库只有 libc.a
且在C:\ti-processor-sdk-rtos-j7200-evm-07_03_00_07\ti-cgt-arm_20.2.0.LTS xim 也只有一个 libc.a 文件 没有一个 libcxx 或者 libc++.a
我的问题： 无论c 还是c++ ， 语言库只链接 libc.a?
|
C:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/ti-cgt-arm_20.2.0.LTS/bin/armcl -O4 --run_linker --emit_warnings_as_errors -w -q -u _c_int00 -c -mv7R5 --diag_suppress=10063 -x --zero_init=on C:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/binary/udma_baremetal_memcpy_testapp/obj/j7200_evm/mcu1_0/debug/main_baremetal.oer5f C:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/binary/udma_baremetal_memcpy_testapp/obj/j7200_evm/mcu1_0/debug/CStudent.oer5f C:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/build/j7200/linker_r5.lds -o C:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/binary/udma_baremetal_memcpy_testapp/bin/j7200_evm/udma_baremetal_memcpy_testapp_mcu1_0_debug.xer5f -m C:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/binary/udma_baremetal_memcpy_testapp/bin/j7200_evm/udma_baremetal_memcpy_testapp_mcu1_0_debug.xer5f.map -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/csl/lib/j7200/r5f/debug/ti.csl.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/drv/uart/lib/j7200/r5f/debug/ti.drv.uart.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/drv/i2c/lib/j7200/r5f/debug/ti.drv.i2c.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/board/lib/j7200_evm/r5f/debug/ti.board.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/drv/udma/lib/j7200/mcu1_0/debug/udma.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/drv/gpio/lib/j7200/r5f/debug/ti.drv.gpio.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/drv/pmic/lib/j7200_evm/r5f/debug/pmic.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/drv/pm/lib/j7200/r5f/debug/pm_lib.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/drv/sciclient/lib/j7200/mcu1_0/debug/sciclient_direct.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/drv/sciclient/lib/j7200/mcu1_0/debug/rm_pm_hal.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/osal/lib/nonos/j7200/r5f/debug/ti.osal.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/csl/lib/j7200/r5f/debug/ti.csl.init.aer5f -lC:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packages/ti/drv/udma/lib/j7200/mcu1_0/debug/udma_apputils.aer5f C:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/ti-cgt-arm_20.2.0.LTS/lib/libc.a |
- 链接问题，
如果 Student 定义在函数中，也就是局部变量，link是成功的，
如果我定义全局变量， CStudent g_cstu; 报错如下：
<Linking>
error: creating output section ".init_array" without a SECTIONS specification
error: errors encountered during linking;
"C:/ti-processor-sdk-rtos-j7200-evm-07_03_00_07/pdk_j7200_07_03_00_29/packag
es/ti/binary/udma_baremetal_memcpy_testapp/bin/j7200_evm/udma_baremetal_memc
py_testapp_mcu1_0_debug.xer5f" not built
>> Compilation failure
我的问题，如何解决？
源码和log附件附上， 期待您的答复
/*CStudent.cpp */
#include <CStudent.h>
using namespace std;
CStudent::CStudent(){
this->id = -1;
}
CStudent::~CStudent(){}
int CStudent::getId() const {return id;}
void CStudent::setId(int val) {id=val;}
std::string CStudent::getName() {return name;}
void CStudent::setName(std::string val) {name=val;}
/*CStudent.h */
#ifndef C_STUDENT_H
#define C_STUDENT_H
#include <iostream>
#include <string> // the C++ Standard String Class
class CStudent{
public:
CStudent();
~CStudent();
int getId() const;
void setId(int val);
void setName(std::string val);
std::string getName();
private:
int id;
std::string name;
};
#endif
