Reorganized default NOB_REBUILD_URSELF()

Author: rexim

nob.h

@@ -1,4 +1,4 @@
-/* nob - v2.0.1 - Public Domain - https://github.com/tsoding/nob.h
+/* nob - v2.1.0 - Public Domain - https://github.com/tsoding/nob.h
 
    This library is the next generation of the [NoBuild](https://github.com/tsoding/nobuild) idea.
 
@@ -693,24 +693,22 @@ NOBDEF char *nob_temp_running_executable_path(void);
 // TODO: Maybe instead NOB_REBUILD_URSELF macro, the Go Rebuild Urself™ Technology should use the
 //   user defined nob_cc_* macros instead?
 #ifndef NOB_REBUILD_URSELF
-#  if defined(_WIN32)
-#    if defined(__GNUC__)
-#      if defined(__cplusplus)
-#        define NOB_REBUILD_URSELF(binary_path, source_path) "gcc", "-x", "c++", "-o", binary_path, source_path
-#      else
-#        define NOB_REBUILD_URSELF(binary_path, source_path) "gcc", "-x", "c", "-o", binary_path, source_path
-#      endif
-#    elif defined(__clang__)
-#      if defined(__cplusplus)
-#        define NOB_REBUILD_URSELF(binary_path, source_path) "clang", "-x", "c++", "-o", binary_path, source_path
-#      else
-#        define NOB_REBUILD_URSELF(binary_path, source_path) "clang", "-x", "c", "-o", binary_path, source_path
-#      endif
-#    elif defined(_MSC_VER)
-#       define NOB_REBUILD_URSELF(binary_path, source_path) "cl.exe", nob_temp_sprintf("/Fe:%s", (binary_path)), source_path
-#    elif defined(__TINYC__)
-#       define NOB_REBUILD_URSELF(binary_path, source_path) "tcc", "-o", binary_path, source_path
+#  if defined(_MSC_VER)
+#    define NOB_REBUILD_URSELF(binary_path, source_path) "cl.exe", nob_temp_sprintf("/Fe:%s", (binary_path)), source_path
+#  elif defined(__clang__)
+#    if defined(__cplusplus)
+#      define NOB_REBUILD_URSELF(binary_path, source_path) "clang", "-x", "c++", "-o", binary_path, source_path
+#    else
+#      define NOB_REBUILD_URSELF(binary_path, source_path) "clang", "-x", "c", "-o", binary_path, source_path
+#    endif
+#  elif defined(__GNUC__)
+#    if defined(__cplusplus)
+#      define NOB_REBUILD_URSELF(binary_path, source_path) "gcc", "-x", "c++", "-o", binary_path, source_path
+#    else
+#      define NOB_REBUILD_URSELF(binary_path, source_path) "gcc", "-x", "c", "-o", binary_path, source_path
 #    endif
+#  elif defined(__TINYC__)
+#     define NOB_REBUILD_URSELF(binary_path, source_path) "tcc", "-o", binary_path, source_path
 #  else
 #    if defined(__cplusplus)
 #      define NOB_REBUILD_URSELF(binary_path, source_path) "cc", "-x", "c++", "-o", binary_path, source_path
@@ -2568,7 +2566,10 @@ NOBDEF char *nob_temp_running_executable_path(void)
 /*
    Revision history:
 
-     2.0.1+ (          ) Fix C++ support (by @rexim)
+      2.1.0 (          ) Improve C++ support (by @rexim)
+                           - Fix various C++ compilers warnings and complains throughout the code.
+                           - Reimplement nob_cmd_append() without taking a pointer to temporary array (some C++ compilers don't like that)
+                           - Make default NOB_REBUILD_URSELF() try to recompile with C++ if __cplusplus macro is defined
       2.0.1 (2026-01-07) Fix Walk_Entry naming (by @Sinha-Ujjawal)
                          Using single String Builder in nob__walk_dir_opt_impl (by @Sinha-Ujjawal)
                          Add tcc to nob_cc_*() and NOB_REBUILD_URSELF() macros (by @vylsaz)