avrdude: Use a minimalistic embedded conf instead of an external file

src/avrdude/conf-generate.cpp

@@ -0,0 +1,41 @@
+#include <iostream>
+#include <fstream>
+#include <ios>
+#include <iomanip>
+
+
+int main(int argc, char const *argv[])
+{
+    if (argc != 3) {
+        std::cerr << "Usage: " << argv[0] << " <file> <symbol name>" << std::endl;
+        return -1;
+    }
+
+    const char* filename = argv[1];
+    const char* symbol = argv[2];
+
+    size_t size = 0;
+    std::fstream file(filename);
+    if (!file.good()) {
+        std::cerr << "Cannot read file: " << filename << std::endl;
+    }
+
+    std::cout << "/* WARN: This file is auto-generated from `" << filename << "` */" << std::endl;
+    std::cout << "unsigned char " << symbol << "[] = {";
+
+    char c;
+    std::cout << std::hex;
+    std::cout.fill('0');
+    for (file.get(c); !file.eof(); size++, file.get(c)) {
+        if (size % 12 == 0) { std::cout << "\n    "; }
+        std::cout << "0x" << std::setw(2) << (unsigned)c << ", ";
+    }
+
+    std::cout << "\n    0, 0\n};\n";
+
+    std::cout << std::dec;
+    std::cout << "size_t " << symbol << "_size = " << size << ";" << std::endl;
+    std::cout << "size_t " << symbol << "_size_yy = " << size + 2 << ";" << std::endl;
+
+    return 0;
+}