Compile errors

[mkopack73]

Don't know if the libraries got updated since you posted this or what, but when I try to build the source with a fully up to date Pi4, I get the following:

i2c_bus.cpp: In member function \u2018void i2c_bus::write_byte_and_read(uint8_t, uint8_t, uint8_t*, size_t)\u2019:
i2c_bus.cpp:84:38: error: invalid use of incomplete type \u2018struct i2c_msg\u2019
{ address, 0, 1, (typeof(i2c_msg().buf)) &command },
^
i2c_bus.cpp:11:30: note: in definition of macro \u2018typeof\u2019
#define typeof(x) typeof(x)
^
In file included from i2c_bus.cpp:8:
/usr/include/linux/i2c-dev.h:66:9: note: forward declaration of \u2018struct i2c_msg\u2019
struct i2c_msg msgs; / pointers to i2c_msgs */
^~~~~~~
i2c_bus.cpp:85:16: error: \u2018I2C_M_RD\u2019 was not declared in this scope
{ address, I2C_M_RD, (typeof(i2c_msg().len)) size, (typeof(i2c_msg().buf)) data },
^~~~~~~~
i2c_bus.cpp:85:16: note: suggested alternative: \u2018I2C_RDWR\u2019
{ address, I2C_M_RD, (typeof(i2c_msg().len)) size, (typeof(i2c_msg().buf)) data },
^~~~~~~~
I2C_RDWR
i2c_bus.cpp:85:42: error: invalid use of incomplete type \u2018struct i2c_msg\u2019
{ address, I2C_M_RD, (typeof(i2c_msg().len)) size, (typeof(i2c_msg().buf)) data },
^
i2c_bus.cpp:11:30: note: in definition of macro \u2018typeof\u2019
#define typeof(x) typeof(x)
^
In file included from i2c_bus.cpp:8:
/usr/include/linux/i2c-dev.h:66:9: note: forward declaration of \u2018struct i2c_msg\u2019
struct i2c_msg msgs; / pointers to i2c_msgs */
^~~~~~~
i2c_bus.cpp:85:72: error: invalid use of incomplete type \u2018struct i2c_msg\u2019
{ address, I2C_M_RD, (typeof(i2c_msg().len)) size, (typeof(i2c_msg().buf)) data },
^

i2c_bus.cpp:11:30: note: in definition of macro \u2018typeof\u2019
#define typeof(x) typeof(x)
^
In file included from i2c_bus.cpp:8:
/usr/include/linux/i2c-dev.h:66:9: note: forward declaration of \u2018struct i2c_msg\u2019
struct i2c_msg msgs; / pointers to i2c_msgs /
^~~~~~~
i2c_bus.cpp:83:11: error: elements of array \u2018i2c_msg messages [2]\u2019 have incomplete type
i2c_msg messages[2] = {
^~~~~~~~
i2c_bus.cpp:83:11: error: storage size of \u2018messages\u2019 isn\u2019t known
i2c_bus.cpp:89:16: error: \u2018ioctl\u2019 was not declared in this scope
int result = ioctl(fd, I2C_RDWR, &ioctl_data);
^~~~~
i2c_bus.cpp: In member function \u2018void i2c_bus::write(uint8_t, const uint8_t, size_t)\u2019:
i2c_bus.cpp:100:35: error: invalid use of incomplete type \u2018struct i2c_msg\u2019
{ address, 0, (typeof(i2c_msg().len)) size, (typeof(i2c_msg().buf)) data }
^
i2c_bus.cpp:11:30: note: in definition of macro \u2018typeof\u2019
#define typeof(x) typeof(x)
^
In file included from i2c_bus.cpp:8:
/usr/include/linux/i2c-dev.h:66:9: note: forward declaration of \u2018struct i2c_msg\u2019
struct i2c_msg msgs; / pointers to i2c_msgs */
^~~~~~~
i2c_bus.cpp:100:65: error: invalid use of incomplete type \u2018struct i2c_msg\u2019
{ address, 0, (typeof(i2c_msg().len)) size, (typeof(i2c_msg().buf)) data }
^
i2c_bus.cpp:11:30: note: in definition of macro \u2018typeof\u2019
#define typeof(x) typeof(x)
^
In file included from i2c_bus.cpp:8:
/usr/include/linux/i2c-dev.h:66:9: note: forward declaration of \u2018struct i2c_msg\u2019
struct i2c_msg msgs; / pointers to i2c_msgs /
^~~~~~~
i2c_bus.cpp:99:11: error: elements of array \u2018i2c_msg messages [1]\u2019 have incomplete type
i2c_msg messages[1] = {
^~~~~~~~
i2c_bus.cpp:99:11: error: storage size of \u2018messages\u2019 isn\u2019t known
i2c_bus.cpp:104:16: error: \u2018ioctl\u2019 was not declared in this scope
int result = ioctl(fd, I2C_RDWR, &ioctl_data);
^~~~~
i2c_bus.cpp: In member function \u2018int i2c_bus::try_write_byte_and_read(uint8_t, uint8_t, uint8_t, size_t)\u2019:
i2c_bus.cpp:116:38: error: invalid use of incomplete type \u2018struct i2c_msg\u2019
{ address, 0, 1, (typeof(i2c_msg().buf))&byte },
^
i2c_bus.cpp:11:30: note: in definition of macro \u2018typeof\u2019
#define typeof(x) typeof(x)
^
In file included from i2c_bus.cpp:8:
/usr/include/linux/i2c-dev.h:66:9: note: forward declaration of \u2018struct i2c_msg\u2019
struct i2c_msg msgs; / pointers to i2c_msgs */
^~~~~~~
i2c_bus.cpp:117:16: error: \u2018I2C_M_RD\u2019 was not declared in this scope
{ address, I2C_M_RD, (typeof(i2c_msg().len))size, (typeof(i2c_msg().buf))data },
^~~~~~~~
i2c_bus.cpp:117:16: note: suggested alternative: \u2018I2C_RDWR\u2019
{ address, I2C_M_RD, (typeof(i2c_msg().len))size, (typeof(i2c_msg().buf))data },
^~~~~~~~
I2C_RDWR
i2c_bus.cpp:117:42: error: invalid use of incomplete type \u2018struct i2c_msg\u2019
{ address, I2C_M_RD, (typeof(i2c_msg().len))size, (typeof(i2c_msg().buf))data },
^
i2c_bus.cpp:11:30: note: in definition of macro \u2018typeof\u2019
#define typeof(x) typeof(x)
^
In file included from i2c_bus.cpp:8:
/usr/include/linux/i2c-dev.h:66:9: note: forward declaration of \u2018struct i2c_msg\u2019
struct i2c_msg msgs; / pointers to i2c_msgs */
^~~~~~~
i2c_bus.cpp:117:71: error: invalid use of incomplete type \u2018struct i2c_msg\u2019
{ address, I2C_M_RD, (typeof(i2c_msg().len))size, (typeof(i2c_msg().buf))data },
^

i2c_bus.cpp:11:30: note: in definition of macro \u2018typeof\u2019
#define typeof(x) typeof(x)
^
In file included from i2c_bus.cpp:8:
/usr/include/linux/i2c-dev.h:66:9: note: forward declaration of \u2018struct i2c_msg\u2019
struct i2c_msg msgs; / pointers to i2c_msgs */
^~~~~~~
i2c_bus.cpp:115:11: error: elements of array \u2018i2c_msg messages [2]\u2019 have incomplete type
i2c_msg messages[2] = {
^~~~~~~~
i2c_bus.cpp:115:11: error: storage size of \u2018messages\u2019 isn\u2019t known
i2c_bus.cpp:121:16: error: \u2018ioctl\u2019 was not declared in this scope
int result = ioctl(fd, I2C_RDWR, &ioctl_data);
^~~~~
make: *** [: i2c_bus.o] Error 1