Drop mkcard. dd is standard and can replace it (see setup-x48ng-home.sh)

dd if=/dev/zero of="$DOTX48NG"/port2 bs=1k count=4096

Makefile

@@ -5,7 +5,8 @@
 # https://git.kernel.org/pub/scm/fs/fsverity/fsverity-utils.git/
 # The governing license can be found in the LICENSE file or at
 # https://opensource.org/license/MIT.
-TARGETS = dist/x48ng dist/x48ng-mkcard dist/x48ng-checkrom dist/x48ng-dump2rom
+
+TARGETS = dist/x48ng dist/x48ng-checkrom dist/x48ng-dump2rom
 
 PREFIX = /usr
 DOCDIR = $(PREFIX)/doc/x48ng
@@ -131,7 +132,6 @@ endif
 all: $(TARGETS)
 
 dist/x48ng-dump2rom: src/legacy_tools/dump2rom.o
-dist/x48ng-mkcard: src/legacy_tools/mkcard.o
 dist/x48ng-checkrom: src/legacy_tools/checkrom.o src/romio.o
 dist/x48ng: $(DOTOS)
 
@@ -171,7 +171,6 @@ install: all dist/config.lua
 	chmod 755 $(DESTDIR)$(PREFIX)/share/x48ng/setup-x48ng-home.sh
 
 	install -m 755 -d -- $(DESTDIR)$(PREFIX)/libexec
-	install -c -m 755 dist/x48ng-mkcard $(DESTDIR)$(PREFIX)/libexec/x48ng-mkcard
 	install -c -m 755 dist/x48ng-dump2rom $(DESTDIR)$(PREFIX)/libexec/x48ng-dump2rom
 	install -c -m 755 dist/x48ng-checkrom $(DESTDIR)$(PREFIX)/libexec/x48ng-checkrom
 

src/legacy_tools/mkcard.c

@@ -1,72 +0,0 @@
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <stdbool.h>
-
-bool write_mem_file( char* name, unsigned char* mem, size_t size )
-{
-    FILE* fp;
-
-    if ( NULL == ( fp = fopen( name, "w" ) ) ) {
-        fprintf( stderr, "can\'t open %s\n", name );
-        return false;
-    }
-
-    if ( fwrite( mem, 1, size, fp ) != size ) {
-        fprintf( stderr, "can\'t write %s\n", name );
-        fclose( fp );
-        return false;
-    }
-
-    fclose( fp );
-    return true;
-}
-
-int main( int argc, char** argv )
-{
-    size_t size;
-    char* name;
-    char* asize;
-    unsigned char* core;
-
-    if ( argc < 2 ) {
-        fprintf( stderr, "usage: %s [32K | 128K | 1M | 2M | 4M] file-name\n", argv[ 0 ] );
-        exit( 1 );
-    }
-
-    name = argv[ 2 ];
-    asize = argv[ 1 ];
-    if ( !strcmp( asize, "32K" ) )
-        size = 0x8000;
-    else if ( !strcmp( asize, "128K" ) )
-        size = 0x20000;
-    else if ( !strcmp( asize, "256K" ) )
-        size = 0x40000;
-    else if ( !strcmp( asize, "512K" ) )
-        size = 0x80000;
-    else if ( !strcmp( asize, "1M" ) )
-        size = 0x100000;
-    else if ( !strcmp( asize, "2M" ) )
-        size = 0x200000;
-    else if ( !strcmp( asize, "4M" ) )
-        size = 0x400000;
-    else {
-        fprintf( stderr, "size must be one of 32K, 128K, 256K, 512K, 1M, 2M, or 4M\n" );
-        exit( 1 );
-    }
-
-    if ( ( core = ( unsigned char* )malloc( size ) ) == NULL ) {
-        fprintf( stderr, "can\'t malloc %ld bytes\n", size );
-        exit( 1 );
-    }
-    memset( core, 0, size );
-
-    if ( !write_mem_file( name, core, size ) ) {
-        fprintf( stderr, "can\'t write to %s\n", name );
-        exit( 1 );
-    }
-
-    exit( 0 );
-}