output.log

libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj): In function `Adafruit_RA8875::Adafruit_RA8875(unsigned char, unsigned char)':
/home/alex/Code/adafruit-test/libraries/Adafruit_RA8875/Adafruit_RA8875.cpp:667: undefined reference to `Adafruit_GFX::Adafruit_GFX(int, int)'
libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj):(.rodata._ZTV15Adafruit_RA8875[vtable for Adafruit_RA8875]+0xa): undefined reference to `Adafruit_GFX::startWrite()'
libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj):(.rodata._ZTV15Adafruit_RA8875[vtable for Adafruit_RA8875]+0xc): undefined reference to `Adafruit_GFX::writePixel(int, int, unsigned int)'
libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj):(.rodata._ZTV15Adafruit_RA8875[vtable for Adafruit_RA8875]+0xe): undefined reference to `Adafruit_GFX::writeFillRect(int, int, int, int, unsigned int)'
libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj):(.rodata._ZTV15Adafruit_RA8875[vtable for Adafruit_RA8875]+0x10): undefined reference to `Adafruit_GFX::writeFastVLine(int, int, int, unsigned int)'
libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj):(.rodata._ZTV15Adafruit_RA8875[vtable for Adafruit_RA8875]+0x12): undefined reference to `Adafruit_GFX::writeFastHLine(int, int, int, unsigned int)'
libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj):(.rodata._ZTV15Adafruit_RA8875[vtable for Adafruit_RA8875]+0x14): undefined reference to `Adafruit_GFX::writeLine(int, int, int, int, unsigned int)'
libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj):(.rodata._ZTV15Adafruit_RA8875[vtable for Adafruit_RA8875]+0x16): undefined reference to `Adafruit_GFX::endWrite()'
libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj):(.rodata._ZTV15Adafruit_RA8875[vtable for Adafruit_RA8875]+0x18): undefined reference to `Adafruit_GFX::setRotation(unsigned char)'
libmegaADK_Adafruit_RA8875.a(Adafruit_RA8875.cpp.obj):(.rodata._ZTV15Adafruit_RA8875[vtable for Adafruit_RA8875]+0x1a): undefined reference to `Adafruit_GFX::invertDisplay(bool)'
collect2: error: ld returned 1 exit status
CMakeFiles/adafruit_test.dir/build.make:106: recipe for target 'adafruit_test.elf' failed
make[2]: *** [adafruit_test.elf] Error 1
CMakeFiles/Makefile2:220: recipe for target 'CMakeFiles/adafruit_test.dir/all' failed
make[1]: *** [CMakeFiles/adafruit_test.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2