tc@box:~/zblast-1.3$ make vga
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\" -c lib/pitrex/bcm2835.c -o bcm2835.o
lib/pitrex/bcm2835.c: In function 'bcm2835_init':
lib/pitrex/bcm2835.c:1778:27: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'volatile uint32_t * {aka volatile unsigned int *}' [-Wformat=]
 printf("DEV: bcm2835_st: %u\r\n", bcm2835_st);
                          ~^
                          %ls
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\" -c lib/pitrex/pitrexio-gpio.c -o pitrexio-gpio.o
lib/pitrex/pitrexio-gpio.c: In function 'vectrexread_end':
lib/pitrex/pitrexio-gpio.c:121:7: warning: unused variable 'status' [-Wunused-variable]
  char status;
       ^~~~~~
lib/pitrex/pitrexio-gpio.c: In function 'vectrexwrite':
lib/pitrex/pitrexio-gpio.c:306:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if (vectrexwrite_begin (address, data));
  ^~
lib/pitrex/pitrexio-gpio.c:307:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   vectrexwrite_end (1);
   ^~~~~~~~~~~~~~~~
lib/pitrex/pitrexio-gpio.c: In function 'vectrexwrite_on_irq':
lib/pitrex/pitrexio-gpio.c:356:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if (vectrexwrite_begin_on_irq (address, data));
  ^~
lib/pitrex/pitrexio-gpio.c:357:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   vectrexwrite_end (1);
   ^~~~~~~~~~~~~~~~
lib/pitrex/pitrexio-gpio.c: In function 'vectrexinit':
lib/pitrex/pitrexio-gpio.c:432:2: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
  printf("Vectrexinit()\r\n");
  ^~~~~~
lib/pitrex/pitrexio-gpio.c:432:2: warning: incompatible implicit declaration of built-in function 'printf'
lib/pitrex/pitrexio-gpio.c:432:2: note: include '<stdio.h>' or provide a declaration of 'printf'
lib/pitrex/pitrexio-gpio.c: In function 'vectrexinterrupt_end':
lib/pitrex/pitrexio-gpio.c:390:84: warning: 'ier' may be used uninitialized in this function [-Wmaybe-uninitialized]
     vectrexwrite (VIA_int_flags, ((0xFE << interrupt) | (0x7F >> (7 - interrupt))) & ier);
                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
lib/pitrex/pitrexio-gpio.c: In function 'vectrexinterrupt':
lib/pitrex/pitrexio-gpio.c:390:84: warning: 'ier' may be used uninitialized in this function [-Wmaybe-uninitialized]
     vectrexwrite (VIA_int_flags, ((0xFE << interrupt) | (0x7F >> (7 - interrupt))) & ier);
                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
lib/pitrex/pitrexio-gpio.c:381:16: note: 'ier' was declared here
  unsigned char ier;
                ^~~
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\" -S lib/vectrex/vectrexInterface.c -o vectrexInterface.s
In file included from lib/vectrex/vectrexInterface.c:83:0:
lib/vectrex/rasterFont.i: In function 'v_printStringRaster':
lib/vectrex/rasterFont.i:150:27: warning: pointer targets in initialization differ in signedness [-Wpointer-sign]
   unsigned char* string = _string;
                           ^~~~~~~
lib/vectrex/rasterFont.i: In function 'v_printStringRaster_here':
lib/vectrex/rasterFont.i:252:27: warning: pointer targets in initialization differ in signedness [-Wpointer-sign]
   unsigned char* string = _string;
                           ^~~~~~~
lib/vectrex/rasterFont.i:246:9: warning: unused variable 'yoffset' [-Wunused-variable]
  int8_t yoffset = 0;
         ^~~~~~~
lib/vectrex/vectrexInterface.c: In function 'v_deflok':
lib/vectrex/vectrexInterface.c:564:2: warning: implicit declaration of function 'START_WAIT_T1'; did you mean 'START_T1_TIMER'? [-Wimplicit-function-declaratio ]
  START_WAIT_T1();
  ^~~~~~~~~~~~~
  START_T1_TIMER
lib/vectrex/vectrexInterface.c: In function 'v_init':
lib/vectrex/vectrexInterface.c:142:12: warning: array subscript is above array bounds [-Warray-bounds]
   psgShadow[16] = 0;
   ~~~~~~~~~^~~~
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\" -c lib/svgalib-vectrex/svgalib-vectrex.c -o svgalib-vectrex.o
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\" -c lib/svgalib-vectrex/vectrextokeyboard.c -o vectrextokeyboard.o
lib/svgalib-vectrex/vectrextokeyboard.c: In function 'keyboard_getstate':
lib/svgalib-vectrex/vectrextokeyboard.c:225:12: warning: pointer targets in return differ in signedness [-Wpointer-sign]
     return state;
            ^~~~~
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\"   -c -o zblast.o zblast.c
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\"   -c -o font.o font.c
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\"   -c -o levels.o levels.c
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\"   -c -o hiscore.o hiscore.c
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\"   -c -o anim3d.o anim3d.c
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\"   -c -o sod2.o sod2.c
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\"   -c -o grokfile.o grokfile.c
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\"   -c -o joy.o joy.c
gcc -Ofast -Wall -I./lib -DUSE_EDR -DUART0 -I/usr/X11R6/include -L/usr/X11R6/lib -DSOUNDSDIR=\"/usr/local/games/lib/zblast\"    -DSCORES_FILE=\"/usr/local/games/lib/zblast/zblast.scores\" -o zblast bcm2835.o pitrexio-gpio.o vectrexInterface.s svgalib-vectrex.o vectrextokeyboard.o zblast.o font.o levels.o hiscore.o anim3d.o sod2.o grokfile.o joy.o -lm
zblast.o: In function `initscrn':
zblast.c:(.text+0x32f8): undefined reference to `currentcontext'
/tmp/cczq5VbE.o: In function `v_printStringRaster_here':
vectrexInterface.c:(.text+0x2c0): undefined reference to `setMarkStart'
vectrexInterface.c:(.text+0x31c): undefined reference to `waitFullMicro'
vectrexInterface.c:(.text+0x378): undefined reference to `setMarkStart'
vectrexInterface.c:(.text+0x38c): undefined reference to `waitMarkEnd'
/tmp/cczq5VbE.o: In function `v_deflok':
vectrexInterface.c:(.text+0x16fc): undefined reference to `START_WAIT_T1'
vectrexInterface.c:(.text+0x17bc): undefined reference to `START_WAIT_T1'
/tmp/cczq5VbE.o: In function `v_playDirectSampleAll':
vectrexInterface.c:(.text+0x4148): undefined reference to `v_micros'
vectrexInterface.c:(.text+0x4150): undefined reference to `v_micros'
collect2: error: ld returned 1 exit status
make: *** [Makefile:113: zblast] Error 1