* src/dynlib.c [WINDOWSNT]: Include w32common.h.
<g_b_init_get_module_handle_ex> [WINDOWSNT]: New static variable.
(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS)
(GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT) [WINDOWSNT]: Define
if undefined.
(dynlib_reset_last_error): Reset g_b_init_get_module_handle_ex to
zero.
(dynlib_addr) [WINDOWSNT]: Non-trivial implementation to report
the full file name of the module for a given address.
This avoids warnings when converting between void * and
function pointers, which strict C11 does not allow.
* configure.ac (dlfunc): Check for existence.
* src/dynlib.c (dlfunc) [!HAVE_DLFUNC]: New macro.
(dynlib_func): New function.
* src/dynlib.h (dynlib_function_ptr, dynlib_func): New decls.
* src/emacs-module.c (Fmodule_load): Use dynlib_func, not
dynlib_sym, for function pointers.
* src/dynlib.c [WINDOWSNT]: Include errno.h, lisp.h, and w32.h.
No need to include windows.h, as w32.h already does that.
<dynlib_last_err>: New static variable.
(dynlib_reset_last_error): New function.
(dynlib_open): Convert forward slashes to backslashes. Convert
file names from UTF-8 to either UTF-16 or the current ANSI
codepage, and call either LoadLibraryW or LoadLibraryA. If the
argument is NULL, return a handle to the main module, like
'dlopen' does. Record the error, if any, for use by dynlib_error.
(dynlib_sym): Check the handle for validity. Record the error, if
any, for use by dynlib_error.
(dynlib_error): Call w32_strerror to produce the error string, and
zero out the last error code, like dlerror does.
(dynlib_close): Check the handle for validity. Record the error,
if any, for use by dynlib_error. Don't call FreeLibrary with a
handle for the main module.
* src/w32.c (globals_of_w32): Call dynlib_reset_last_error.
* src/dynlib.c, src/emacs-module.c: Include <config.h> first.
* src/dynlib.h: Do not include config.h.
It’s every .c file’s responsibility to include config.h first.
* src/emacs-module.c: Include emacs-module.h immediately after
config.h, to test that emacs-module.h doesn’t depend on
include files other than config.h.
* src/dynlib.c (dynlib_close): #ifdef out for now, as it’s not used.
* src/eval.c, src/lisp.h (lisp_eval_depth): Now static.
* src/module.c (Fmodule_load): Fix pointer signedness bug.
(Fmodule_call): Tell GCC that the default case is unreachable.
This is mostly indenting and spacing changes. Also, remove
some unnecessary static decls instead of bothering to reindent them.
* src/module.h (EMACS_EXTERN_C_BEGIN): Remove, and do this inline,
as most other Emacs files do for this sort of thing.
