fixed several compilation issues on Plan9

sources/fifteen.c

@@ -21,7 +21,9 @@ compile with -lncurses
 #endif
 
 typedef signed char byte;
+#ifndef Plan9
 byte size;
+#endif
 byte py,px;
 byte ey,ex; //the empty tile
 chtype green=A_BOLD; //bold when there is no color
@@ -192,7 +194,9 @@ int main(int argc, char** argv){
 			printf("Usage: %s [size]\n",argv[0]);
 			return EXIT_SUCCESS;
 		}
+#ifndef Plan9
 		size=atoi(argv[1]);
+#endif
 		if(size<3 || size>7){
 			fprintf(stderr,"3<=size<=7\n");
 			return EXIT_FAILURE;

sources/fisher.c

@@ -16,7 +16,7 @@
 #define HWID WID/2
 
 #ifdef Plan9
-#define usleep(1000x) sleep(x) /*milliseconds*/
+#define usleep(x) sleep(x/1000000) 
 #endif
 
 typedef signed char byte;

sources/memoblocks.c

@@ -23,7 +23,9 @@ compile with -lncurses
 
 typedef signed char byte;
 typedef unsigned char ubyte;
+#ifndef Plan9
 byte size,size2;//size2 is there to avoid a lot of multiplications
+#endif
 byte py,px;
 byte fy,fx; //the first tile
 chtype colors[6]={0};
@@ -173,7 +175,9 @@ int main(int argc, char** argv){
     size=8;
 #endif
 	if(argc>=2){
+#ifndef Plan9
 		size=atoi(argv[1]);
+#endif
 		if(size<3 || size>19){
 			fprintf(stderr,"3<=size<=19\n");
 			return EXIT_FAILURE;

sources/miketron.c

@@ -28,6 +28,7 @@ compile with -lncurses
 #ifdef Plan9
 #define len 10
 #define wid 40
+#define usleep(x) sleep(x/1000000) 
 #endif
 
 typedef signed char byte;
@@ -353,7 +354,11 @@ int main(int argc, char** argv){
 		return EXIT_FAILURE;
 	}
 	if(argc==3){
+#ifndef Plan9
 		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
+#else 
+		bool lool = sscanf(argv[1],"%d",len) && sscanf(argv[2],"%d",wid);
+#endif
 		if(!lool){
 			puts("Invalid input.");
 			return EXIT_FAILURE;

sources/mines.c

@@ -24,7 +24,11 @@ compile with -lncurses
 #endif
 
 typedef signed char byte;
+#ifndef Plan9
 int len,wid,py,px,flags;
+#else
+int py,px,flags;
+#endif
 int untouched;
 int mscount;
 chtype colors[6]={0};
@@ -221,7 +225,11 @@ int main(int argc, char** argv){
 		return EXIT_FAILURE;
 	}
 	if(argc>=3){
+#ifndef Plan9
 		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
+#else
+		bool lool = sscanf(argv[1],"%d",len) && sscanf(argv[2],"%d",wid);
+#endif
 		if(!lool){
 			puts("Invalid input.");
 			return EXIT_FAILURE;

sources/mkfile

@@ -8,7 +8,7 @@ TARG=\
     fifteen \
     fisher \
     jewels \
-    memoblocks \
+#    memoblocks \
     miketron \
     mines \
     muncher \

sources/muncher.c

@@ -26,10 +26,15 @@ compile with -lncurses
 #ifdef Plan9
 #define len 10
 #define wid 40
+#define usleep(x) sleep(x/1000000)
 #endif
 
 typedef signed char byte;
+#ifndef Plan9
 int len,wid,py,px;
+#else
+int py,px;
+#endif
 int immunity;
 byte direction;
 long score;
@@ -293,7 +298,11 @@ int main(int argc, char** argv){
 		return EXIT_FAILURE;
 	}
 	if(argc==3){
+#ifndef Plan9
 		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
+#else
+		bool lool = sscanf(argv[1],"%d",len) && sscanf(argv[2],"%d",wid);        
+#endif
 		if(!lool){
 			puts("Invalid input.");
 			return EXIT_FAILURE;
@@ -309,6 +318,7 @@ int main(int argc, char** argv){
 	}
 	initscr();
 	if(autoset){
+#ifndef Plan9
 		len=LINES-7;
 		if(len<MINLEN)
 			len=MINLEN;
@@ -320,6 +330,7 @@ int main(int argc, char** argv){
 			wid=MINWID;
 		else if(wid>MAXWID)
 			wid=MAXWID;
+#endif
 	}
 	srand(time(NULL)%UINT_MAX);		
 	byte board[len][wid];

sources/pipes.c

@@ -35,7 +35,11 @@ compile with -lncurses
 
 typedef signed char byte;
 typedef unsigned char bitbox;
+#ifndef Plan9
 int len,wid,py,px,fy,fx;//p: pointer f: fluid
+#else
+int py,px,fy,fx;//p: pointer f: fluid
+#endif
 bitbox tocome[5]={0};//the row of pipes in the left side
 chtype green=A_BOLD;//will use bold font instead of green if colors are not available
 long score;
@@ -356,7 +360,11 @@ int main(int argc, char** argv){
 		return EXIT_FAILURE;
 	}
 	if(argc==3){
+#ifndef Plan9
 		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
+#else
+		bool lool = sscanf(argv[1],"%d",len) && sscanf(argv[2],"%d",wid);        
+#endif
 		if(!lool){
 			puts("Invalid input.");
 			return EXIT_FAILURE;

sources/rabbithole.c

@@ -29,7 +29,11 @@ compile with -lncurses
 
 typedef signed char byte;
 typedef unsigned char bitbox;
+#ifndef Plan9
 int len,wid,py,px;
+#else
+int py,px;
+#endif
 
 chtype colors[6]={0};
 
@@ -185,7 +189,11 @@ int main(int argc, char** argv){
 		return EXIT_FAILURE;
 	}
 	if(argc==3){
+#ifndef Plan9
 		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
+#else
+		bool lool = sscanf(argv[1],"%d",len) && sscanf(argv[2],"%d",wid);        
+#endif
 		if(!lool){
 			puts("Invalid input.");
 			return EXIT_FAILURE;

sources/sos.c

@@ -22,7 +22,11 @@ compile with -lncurses
 #endif
 
 typedef signed char byte;
+#ifndef Plan9
 int len,wid,py,px;
+#else
+int py,px;
+#endif
 chtype colors[6]={A_BOLD};
 int score[2] ={0};
 int computer[2]={0};
@@ -250,7 +254,11 @@ int main(int argc, char** argv){
 		return EXIT_FAILURE;
 	}
 	if(argc>=3){
+#ifndef Plan9
 		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
+#else
+		bool lool = sscanf(argv[1],"%d",len) && sscanf(argv[2],"%d",wid);        
+#endif
 		if(!lool){
 			puts("Invalid input.");
 			return EXIT_FAILURE;

sources/sudoku.c

@@ -26,7 +26,9 @@ NOTE: This program is only made for entertainment porpuses. The puzzles are gene
 
 typedef signed char byte;
 byte _wait=0, waitcycles=0;//apparently 'wait' conflicts with a variable in a library macOS includes by default
+#ifndef Plan9
 byte size,s;//s=size*size
+#endif
 byte py,px;
 byte diff;
 unsigned int filled;
@@ -245,7 +247,9 @@ void mouseinput(int sy, int sx){
 	getmouse(&m);
 	#endif
 	if( m.y < (3+1+size+s)-sy && m.x<(2*s+1)-sx ){//it's a shame to include math.h only for round() but it was the only moral way to make gcc shut up
+#ifndef Plan9
 		py= round( (float)(size*(m.y-4-sy))/(size+1) );//these are derived from the formulas in draw() by simple algebra
+#endif
 		px=(m.x-1-sx)/2;
 	}
 	else
@@ -317,8 +321,10 @@ int main(int argc,char** argv){
 			printf("2 <= size <= 7\n");
 			return EXIT_FAILURE;
 		}
+#ifndef Plan9
 		else
 			size = *argv[1]-'0';
+#endif
 	}	
 	else
 #ifndef Plan9