Add automatic generation of headers

- The 'stripdecls.py' script replaces declarations in all headers by includes to
  generated headers.
  `ag '#\s*if(?!ndef NEOVIM_).*((?!#\s*endif).*\n)*#ifdef INCLUDE_GENERATED'`
  was used for this.
- Add and integrate gendeclarations.lua into the build system to generate the
  required includes.
- Add -Wno-unused-function
- Made a bunch of old-style definitions ANSI

This adds a requirement: all type and structure definitions must be present
before INCLUDE_GENERATED_DECLARATIONS-protected include.

Warning: mch_expandpath (path.h.generated.h) was moved manually. So far it is
the only exception.

1 files changed, 4 insertions, 8 deletions

diff --git a/src/nvim/log.c b/src/nvim/log.c
index a187cc4755..da28a18509 100644
--- a/src/nvim/log.c
+++ b/src/nvim/log.c
@@ -16,16 +16,12 @@
 #define USR_LOG_FILE "$HOME/.nvimlog"
 
 
-static FILE *open_log_file(void);
-static bool do_log_to_file(FILE *log_file, int log_level,
-                           const char *func_name, int line_num,
-                           const char* fmt, ...);
-static bool v_do_log_to_file(FILE *log_file, int log_level,
-                             const char *func_name, int line_num,
-                             const char* fmt, va_list args);
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "log.c.generated.h"
+#endif
 
 bool do_log(int log_level, const char *func_name, int line_num,
-            const char* fmt, ...)
+            const char* fmt, ...) FUNC_ATTR_UNUSED
 {
   FILE *log_file = open_log_file();