feat(cli): display target architecture and byte order in version output

src/cli/main.c

@@ -36,6 +36,74 @@
 #define ZXC_PATH_SEP '/'
 #endif
 
+/** @brief Target architecture shown by -V. */
+#if defined(_M_ARM64EC) || defined(__arm64ec__)  // also defines x86_64 macros: test first
+#define ZXC_CLI_ARCH "arm64ec"
+#elif defined(__x86_64__) && defined(__ILP32__)
+#define ZXC_CLI_ARCH "x32"
+#elif defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64)
+#define ZXC_CLI_ARCH "x86_64"
+#elif defined(__i386__) || defined(_M_IX86)
+#define ZXC_CLI_ARCH "x86"
+#elif defined(__aarch64__) || defined(_M_ARM64)
+#define ZXC_CLI_ARCH "arm64"
+#elif defined(__arm__) || defined(_M_ARM)
+#define ZXC_CLI_ARCH "arm"
+#elif defined(__riscv)
+#if __riscv_xlen == 64
+#define ZXC_CLI_ARCH "riscv64"
+#else
+#define ZXC_CLI_ARCH "riscv32"
+#endif
+#elif defined(__powerpc64__) || defined(__ppc64__)
+#define ZXC_CLI_ARCH "ppc64"
+#elif defined(__powerpc__) || defined(__ppc__)
+#define ZXC_CLI_ARCH "ppc"
+#elif defined(__s390x__)
+#define ZXC_CLI_ARCH "s390x"
+#elif defined(__loongarch64)
+#define ZXC_CLI_ARCH "loongarch64"
+#elif defined(__loongarch__)
+#define ZXC_CLI_ARCH "loongarch32"
+#elif defined(__mips64)
+#define ZXC_CLI_ARCH "mips64"
+#elif defined(__mips__)
+#define ZXC_CLI_ARCH "mips"
+#elif defined(__sparc__) && defined(__arch64__)
+#define ZXC_CLI_ARCH "sparc64"
+#elif defined(__sparc__)
+#define ZXC_CLI_ARCH "sparc"
+#elif defined(__alpha__)
+#define ZXC_CLI_ARCH "alpha"
+#elif defined(__hppa__)
+#define ZXC_CLI_ARCH "hppa"
+#elif defined(__ia64__)
+#define ZXC_CLI_ARCH "ia64"
+#elif defined(__m68k__)
+#define ZXC_CLI_ARCH "m68k"
+#elif defined(__sh__)
+#define ZXC_CLI_ARCH "sh"
+#elif defined(__wasm32__)
+#define ZXC_CLI_ARCH "wasm32"
+#elif defined(__wasm64__)
+#define ZXC_CLI_ARCH "wasm64"
+#else
+#define ZXC_CLI_ARCH "unknown"
+#endif
+
+/** @brief Byte order shown by -V. */
+#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#define ZXC_CLI_ENDIAN "LE"
+#elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#define ZXC_CLI_ENDIAN "BE"
+#elif defined(__LITTLE_ENDIAN__) || defined(_WIN32)
+#define ZXC_CLI_ENDIAN "LE"
+#elif defined(__BIG_ENDIAN__)
+#define ZXC_CLI_ENDIAN "BE"
+#else
+#define ZXC_CLI_ENDIAN "unknown"
+#endif
+
 #ifdef _WIN32
 // Windows Implementation
 #include <direct.h>
@@ -606,7 +674,7 @@ static void print_help(const char* app) {
 }
 
 static void print_version(void) {
-    printf("ZXC CLI (%zu-bit) v%s, by Bertrand Lebonnois\nBSD 3-Clause License\n",
+    printf("ZXC CLI (" ZXC_CLI_ARCH " %zu-bit " ZXC_CLI_ENDIAN ") v%s, by Bertrand Lebonnois\n",
            sizeof(void*) * CHAR_BIT, ZXC_LIB_VERSION_STR);
 }
 

tests/test_cli.sh

@@ -221,6 +221,24 @@ else
     log_fail "Version flag failed"
 fi
 
+# The banner names the target: "(<arch> <32|64>-bit <LE|BE>)", never "unknown".
+VER_TARGET_RE='^ZXC CLI \(([a-z0-9_]+) (32|64)-bit (LE|BE)\) v'
+if [[ "$OUT_VER" =~ $VER_TARGET_RE ]]; then
+    VER_ARCH=${BASH_REMATCH[1]}
+    VER_ENDIAN=${BASH_REMATCH[3]}
+    # The test runs natively, so the shell shares the binary's byte order.
+    if [[ $(printf 'AB' | od -An -tx2 | tr -d ' \n') == "4241" ]]; then HOST_ENDIAN=LE; else HOST_ENDIAN=BE; fi
+    if [[ "$VER_ARCH" == "unknown" ]]; then
+        log_fail "Version banner has no architecture: $OUT_VER"
+    elif [[ "$VER_ENDIAN" != "$HOST_ENDIAN" ]]; then
+        log_fail "Version banner says $VER_ENDIAN, host is $HOST_ENDIAN: $OUT_VER"
+    else
+        log_pass "Version banner names the target ($VER_ARCH $VER_ENDIAN)"
+    fi
+else
+    log_fail "Version banner lacks arch, width or byte order: $OUT_VER"
+fi
+
 # 8. Checksum
 echo "Testing Checksum..."
 "$ZXC_BIN" -C -k -f "$TEST_FILE_ARG"