rename __LIBVLC__ to LIBVLC_INTERNAL_

define names starting with 2 underscore are reserved.

https://devblogs.microsoft.com/oldnewthing/20230109-00/?p=107685

config.h.meson

@@ -75,7 +75,7 @@
 #endif /* _WIN32 */
 
 /* Define within the LibVLC source code tree. */
-#define __LIBVLC__
+#define LIBVLC_INTERNAL_
 
 /* Define to the libdir */
 #mesondefine LIBDIR

configure.ac

@@ -48,7 +48,7 @@ AH_VERBATIM([FORTIFY_SOURCE],
 # define _FORTIFY_SOURCE 2
 #endif])
 AC_DEFINE([_FILE_OFFSET_BITS], 64, [Define to 64 for large files support.])
-AC_DEFINE([__LIBVLC__],, [Define within the LibVLC source code tree.])
+AC_DEFINE([LIBVLC_INTERNAL_],, [Define within the LibVLC source code tree.])
 AC_DEFINE([WIN32_LEAN_AND_MEAN],, [Define to limit the scope of <windows.h>.])
 
 AC_PROG_CXX

include/vlc/libvlc.h

@@ -42,7 +42,7 @@
 # define LIBVLC_API
 #endif
 
-#ifdef __LIBVLC__
+#ifdef LIBVLC_INTERNAL_
 /* Avoid unhelpful warnings from libvlc with our deprecated APIs */
 #   define LIBVLC_DEPRECATED
 #elif defined(__GNUC__) && \

include/vlc_common.h

@@ -298,7 +298,7 @@
  *
  * This macro performs a run-time assertion if C assertions are enabled
  * and the following preprocessor symbol is defined:
- * @verbatim __LIBVLC__ @endverbatim
+ * @verbatim LIBVLC_INTERNAL_ @endverbatim
  * That restriction ensures that assertions in public header files are not
  * unwittingly <i>leaked</i> to externally-compiled plug-ins
  * including those header files.
@@ -306,7 +306,7 @@
  * Within the LibVLC code base, this is exactly the same as assert(), which can
  * and probably should be used directly instead.
  */
-#ifdef __LIBVLC__
+#ifdef LIBVLC_INTERNAL_
 # define vlc_assert(pred) assert(pred)
 #else
 # define vlc_assert(pred) ((void)0)

include/vlc_plugin.h

@@ -577,7 +577,7 @@ int CDECL_SYMBOL VLC_SYMBOL(vlc_entry_cfg_str_enum)(const char *name, \
     "\x47\x4e\x55\x20\x47\x65\x6e\x65\x72\x61\x6c\x20\x50\x75\x62\x6c" \
     "\x69\x63\x20\x4c\x69\x63\x65\x6e\x73\x65\x2c\x20\x76\x65\x72\x73" \
     "\x69\x6f\x6e\x20\x32\x20\x6f\x72\x20\x6c\x61\x74\x65\x72\x2e"
-#if defined (__LIBVLC__)
+#if defined (LIBVLC_INTERNAL_)
 # define VLC_MODULE_COPYRIGHT VLC_COPYRIGHT_VIDEOLAN
 # ifndef VLC_MODULE_LICENSE
 #  define VLC_MODULE_LICENSE VLC_LICENSE_LGPL_2_1_PLUS

src/check_headers

@@ -12,7 +12,7 @@ while read l; do
 	test -z "$d" && continue
 	test "$d" = "WORDS_BIGENDIAN" && continue
 	test "$d" = "UNICODE" && continue
-	test "$d" = "__LIBVLC__" && continue
+	test "$d" = "LIBVLC_INTERNAL_" && continue
 
 	if test -z "$regexp"; then
 		regexp="[^A-Za-z0-9_]\("

src/test/headers.c

@@ -25,10 +25,10 @@
 
 #define PACKAGE "vlc"
 
-/* Because we are from src/ __LIBVLC__ is defined, but we don't want that,
+/* Because we are from src/ LIBVLC_INTERNAL_ is defined, but we don't want that,
  * as we act here as a third-party program just linking to libvlc */
-#ifdef __LIBVLC__
-# undef __LIBVLC__
+#ifdef LIBVLC_INTERNAL_
+# undef LIBVLC_INTERNAL_
 #endif
 
 #include <vlc/vlc.h>