build-busybox: Add a script for building busybox for Windows

wrappers/busybox-list-applets.c

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2025 Martin Storsjo
+ *
+ * This file is part of llvm-mingw.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdint.h>
+#define ALIGN1
+#define ALIGN2
+#define SKIP_applet_main
+#include "include/applet_tables.h"
+
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char **argv) {
+    int offset = 0;
+    for (int i = 0; i < NUM_APPLETS; i++) {
+        printf("%s\n", &applet_names[offset]);
+        offset += strlen(&applet_names[offset]) + 1;
+    }
+    return 0;
+}

wrappers/busybox-wrapper.c

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2018 Martin Storsjo
+ *
+ * This file is part of llvm-mingw.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "native-wrapper.h"
+
+int _tmain(int argc, TCHAR* argv[]) {
+    const TCHAR *dir;
+    const TCHAR *exe;
+    const TCHAR *basename, *target;
+    split_argv(argv[0], &dir, &basename, &target, &exe);
+    TCHAR *exe_path = concat(dir, _T("busybox.exe"));
+
+    return run_final(exe_path, (const TCHAR *const *) argv);
+}