PLAYER=VOLUMIO make
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o main.o main.cpp
In file included from /usr/include/c++/8/vector:69,
                 from display_info.h:29,
                 from display.h:32,
                 from main.cpp:25:
/usr/include/c++/8/bits/vector.tcc: In member function ‘void std::vector<_Tp, _Alloc>::_M_realloc_insert(std::vector<_Tp, _Alloc>::iterator, _Args&& ...) [with _Args = {const double&}; _Tp = double; _Alloc = std::allocator<double>]’:
/usr/include/c++/8/bits/vector.tcc:413:7: note: parameter passing for argument of type ‘std::vector<double>::iterator’ {aka ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’} changed in GCC 7.1
       vector<_Tp, _Alloc>::
       ^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/8/vector:64,
                 from display_info.h:29,
                 from display.h:32,
                 from main.cpp:25:
/usr/include/c++/8/bits/stl_vector.h: In constructor ‘OledOpts::OledOpts()’:
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/stl_vector.h: In member function ‘virtual void OledOpts::process_command_line(int, char**)’:
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o timer.o timer.cpp
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o status.o status.cpp
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o status_msg.o status_msg.cpp
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o utils.o utils.cpp
In file included from /usr/include/c++/8/vector:69,
                 from utils.h:38,
                 from utils.cpp:29:
/usr/include/c++/8/bits/vector.tcc: In member function ‘void std::vector<_Tp, _Alloc>::_M_realloc_insert(std::vector<_Tp, _Alloc>::iterator, _Args&& ...) [with _Args = {const double&}; _Tp = double; _Alloc = std::allocator<double>]’:
/usr/include/c++/8/bits/vector.tcc:413:7: note: parameter passing for argument of type ‘std::vector<double>::iterator’ {aka ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’} changed in GCC 7.1
       vector<_Tp, _Alloc>::
       ^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/8/vector:64,
                 from utils.h:38,
                 from utils.cpp:29:
/usr/include/c++/8/bits/stl_vector.h: In function ‘Status read_double_list(char*, std::vector<double>&, int, const char*)’:
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
/usr/include/c++/8/bits/stl_vector.h: In function ‘Status read_double_list(std::vector<char*>&, std::vector<double>&)’:
/usr/include/c++/8/bits/stl_vector.h:1085:4: note: parameter passing for argument of type ‘__gnu_cxx::__normal_iterator<double*, std::vector<double> >’ changed in GCC 7.1
    _M_realloc_insert(end(), __x);
    ^~~~~~~~~~~~~~~~~
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o display.o display.cpp
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o programopts.o programopts.cpp
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o ultragetopt.o ultragetopt.cpp
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o ArduiPi_OLED.o ArduiPi_OLED.cpp
g++ -std=c++11 -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o Adafruit_GFX.o Adafruit_GFX.cpp
cc  -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o bcm2835.o bcm2835.cbcm2835.c: In function ‘bcm2835_gpio_pad’:
bcm2835.c:487:3: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
   if (bcm2835_pads == MAP_FAILED)
   ^~
bcm2835.c:490:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
     volatile uint32_t* paddr = bcm2835_pads + BCM2835_PADS_GPIO_0_27/4 + group;
     ^~~~~~~~
bcm2835.c: In function ‘bcm2835_gpio_set_pad’:
bcm2835.c:500:3: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
   if (bcm2835_pads == MAP_FAILED)
   ^~
bcm2835.c:503:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
     volatile uint32_t* paddr = bcm2835_pads + BCM2835_PADS_GPIO_0_27/4 + group;
     ^~~~~~~~
cc  -W -Wall -Wno-unused-variable -Wno-unused-parameter -Wno-strict-aliasing -Ofast -DVOLUMIO  -c -o bcm2835_i2c.o bcm2835_i2c.c
bcm2835_i2c.c: In function ‘bcm2835_i2c_alt_write’:
bcm2835_i2c.c:89:14: warning: implicit declaration of function ‘i2c_smbus_write_byte_data’ [-Wimplicit-function-declaration]
     reason = i2c_smbus_write_byte_data(i2c_fd, buf[0], buf[1]);
              ^~~~~~~~~~~~~~~~~~~~~~~~~
bcm2835_i2c.c:92:14: warning: implicit declaration of function ‘i2c_smbus_write_word_data’ [-Wimplicit-function-declaration]
     reason = i2c_smbus_write_word_data(i2c_fd, buf[0], (buf[2] << 8) | buf[1]);
              ^~~~~~~~~~~~~~~~~~~~~~~~~
bcm2835_i2c.c:95:14: warning: implicit declaration of function ‘i2c_smbus_write_i2c_block_data’ [-Wimplicit-function-declaration]
     reason = i2c_smbus_write_i2c_block_data(i2c_fd, buf[0], len - 1,
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
g++  -o mpd_oled main.o timer.o status.o status_msg.o utils.o display.o programopts.o ultragetopt.o ArduiPi_OLED.o Adafruit_GFX.o bcm2835.o bcm2835_i2c.o  -lmpdclient -lpthread -lcurl -ljsoncpp
/usr/bin/ld: bcm2835_i2c.o: in function `bcm2835_i2c_alt_write':
bcm2835_i2c.c:(.text+0x10c): undefined reference to `i2c_smbus_write_i2c_block_data'
/usr/bin/ld: bcm2835_i2c.c:(.text+0x128): undefined reference to `i2c_smbus_write_word_data'
/usr/bin/ld: bcm2835_i2c.c:(.text+0x138): undefined reference to `i2c_smbus_write_byte_data'
collect2: error: ld returned 1 exit status
make: *** [Makefile:31: mpd_oled] Error 1