fix: purely disabled any rtti and exceptions

Author: Charliechen114514

CMakeLists.txt

@@ -56,6 +56,9 @@ target_include_directories(cfbox PUBLIC include)
 target_include_directories(cfbox PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include)
 target_link_libraries(cfbox PRIVATE cfbox_compiler_flags)
 
+# ── Install target ─────────────────────────────────────────────
+install(TARGETS cfbox DESTINATION bin)
+
 # ── GTest via CPM (FetchContent) ──────────────────────────────
 if(NOT CMAKE_CROSSCOMPILING)
 CPMAddPackage(

cmake/compile/CompilerFlag.cmake

@@ -27,6 +27,10 @@ target_compile_options(cfbox_compiler_flags INTERFACE
     -Wnull-dereference
     -Wdouble-promotion
     -Wformat=2
+    -Wformat-signedness
+    -Wstrict-aliasing
+    -fno-exceptions
+    -fno-rtti
 )
 
 # ── Debug-specific flags ──────────────────────────────────────

src/applets/ar.cpp

@@ -54,9 +54,9 @@ auto ar_main(int argc, char* argv[]) -> int {
             std::memset(hdr, ' ', 60);
             std::memcpy(hdr, fname.c_str(), std::min(fname.size(), static_cast<std::size_t>(16)));
             std::snprintf(hdr + 16, 12, "%-10lu", static_cast<unsigned long>(::time(nullptr)));
-            std::snprintf(hdr + 28, 12, "%-6u", 0);  // uid
-            std::snprintf(hdr + 34, 12, "%-6u", 0);  // gid
-            std::snprintf(hdr + 40, 12, "%-8o", 0100644);
+            std::snprintf(hdr + 28, 12, "%-6u", 0u);  // uid
+            std::snprintf(hdr + 34, 12, "%-6u", 0u);  // gid
+            std::snprintf(hdr + 40, 12, "%-8o", 0100644u);
             std::snprintf(hdr + 48, 12, "%-10zu", data->size());
             hdr[58] = '`'; hdr[59] = '\n';
             output.append(hdr, 60);

src/applets/hostid.cpp

@@ -22,6 +22,6 @@ auto hostid_main(int argc, char* argv[]) -> int {
     if (parsed.has_long("version")) { cfbox::help::print_version(HELP); return 0; }
 
     long id = gethostid();
-    std::printf("%08lx\n", id);
+    std::printf("%08ld\n", id);
     return 0;
 }

src/applets/install.cpp

@@ -36,22 +36,20 @@ auto install_main(int argc, char* argv[]) -> int {
     auto target_dir = parsed.get_any('t', "target-directory");
     const auto& pos = parsed.positional();
 
-    auto parse_mode = [](const std::string& s) -> std::filesystem::perms {
-        unsigned long m = std::stoul(s, nullptr, 8);
-        return static_cast<std::filesystem::perms>(m);
-    };
-
     std::filesystem::perms mode = std::filesystem::perms::owner_read |
                                    std::filesystem::perms::owner_write |
                                    std::filesystem::perms::group_read |
                                    std::filesystem::perms::others_read;
     if (mode_str) {
-        try { mode = parse_mode(std::string{*mode_str}); }
-        catch (...) {
+        char* end = nullptr;
+        errno = 0;
+        unsigned long m = std::strtoul(mode_str->data(), &end, 8);
+        if (errno != 0 || end == mode_str->data() || *end != '\0') {
             std::fprintf(stderr, "cfbox install: invalid mode '%.*s'\n",
                          static_cast<int>(mode_str->size()), mode_str->data());
             return 1;
         }
+        mode = static_cast<std::filesystem::perms>(m);
     }
 
     if (mkdir_mode) {

src/applets/stat.cpp

@@ -155,8 +155,8 @@ auto stat_main(int argc, char* argv[]) -> int {
                         file_type_string(st.st_mode));
             auto* pw = getpwuid(st.st_uid);
             auto* gr = getgrgid(st.st_gid);
-            std::printf("Access: (%04o/%s)  Uid: (%5d/%-8s)   Gid: (%5d/%-8s)\n",
-                        st.st_mode & 07777,
+            std::printf("Access: (%04o/%s)  Uid: (%5u/%-8s)   Gid: (%5u/%-8s)\n",
+                        st.st_mode & 07777u,
                         format_perms(st.st_mode).c_str(),
                         st.st_uid, pw ? pw->pw_name : "",
                         st.st_gid, gr ? gr->gr_name : "");

src/applets/sum.cpp

@@ -40,10 +40,10 @@ auto sum_main(int argc, char* argv[]) -> int {
 
         if (sysv) {
             auto result = cfbox::checksum::sysv_sum(*data_result);
-            std::printf("%d %d", result.checksum, result.blocks);
+            std::printf("%u %u", result.checksum, result.blocks);
         } else {
             auto result = cfbox::checksum::bsd_sum(*data_result);
-            std::printf("%05d %5d", result.checksum, result.blocks);
+            std::printf("%05u %5u", result.checksum, result.blocks);
         }
         if (p != "-") std::printf(" %.*s", static_cast<int>(p.size()), p.data());
         std::putchar('\n');