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a66469e003
load.c (load_object, load_file): Accept an additional argument DLP and return in it a pointer that can be used to unload the dynamic object. read.c (eval): Call load_file with an additional argument, and record the pointer returned there in the 'struct file' object of dynamic objects in that object's 'struct file'. commands.c (execute_file_commands): Unload dynamic objects before remaking them, to avoid failure to remake if the OS doesn't allow overwriting objects that are in use. filedef.h (struct file): New member dlopen_ptr. gnumake.h (GMK_EXPORT): Define to dllexport/dllimport decorations for Windows and to nothing on other platforms. (gmk_eval, gmk_expand, gmk_add_function): Add GMK_EXPORT qualifier to prototypes. makeint.h (MAIN): Define before including gnumake.h, to give correct dllexport decorations to exported functions. (load_file): Adjust prototype. loadapi.c: Don't include gnumake.h, since makeint.h already includes it, and takes care of defining MAIN before doing so. build_w32.bat (LinkGCC): Produce an import library for functions exported by Make for loadable dynamic objects. w32/compat/posixfcn.c (dlclose): New function. w32/include/dlfcn.h (dlclose): Add prototype. scripts/features/load: Fix signatures of testload_gmk_setup and explicit_setup, to bring them in line with the documentation.
68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
/* External interfaces usable by dynamic objects loaded into GNU Make.
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--THIS API IS A "TECHNOLOGY PREVIEW" ONLY. IT IS NOT A STABLE INTERFACE--
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Copyright (C) 2013 Free Software Foundation, Inc.
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This file is part of GNU Make.
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GNU Make is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3 of the License, or (at your option) any later
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version.
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GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef _GNUMAKE_H_
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#define _GNUMAKE_H_
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/* Specify the location of elements read from makefiles. */
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typedef struct
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{
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const char *filenm;
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unsigned long lineno;
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} gmk_floc;
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#ifdef _WIN32
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# ifdef MAIN
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# define GMK_EXPORT __declspec(dllexport)
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# else
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# define GMK_EXPORT __declspec(dllimport)
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# endif
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#else
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# define GMK_EXPORT
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#endif
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/* Run $(eval ...) on the provided string BUFFER. */
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void GMK_EXPORT gmk_eval (const char *buffer, const gmk_floc *floc);
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/* Run GNU make expansion on the provided string STR.
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Returns an allocated buffer that the caller must free. */
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char * GMK_EXPORT gmk_expand (const char *str);
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/* Register a new GNU make function NAME (maximum of 255 chars long).
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When the function is expanded in the makefile, FUNC will be invoked with
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the appropriate arguments.
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The return value of FUNC must be either NULL, in which case it expands to
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the empty string, or a pointer to the result of the expansion in a string
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created by malloc(). GNU make will free() the memory when it's done.
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MIN_ARGS is the minimum number of arguments the function requires.
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MAX_ARGS is the maximum number of arguments (or 0 if there's no maximum).
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MIN_ARGS and MAX_ARGS must be >= 0 and <= 255.
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If EXPAND_ARGS is 0, the arguments to the function will not be expanded
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before FUNC is called. If EXPAND_ARGS is non-0, they will be expanded.
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*/
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void GMK_EXPORT gmk_add_function (const char *name,
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char *(*func)(const char *nm,
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int argc, char **argv),
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int min_args, int max_args, int expand_args);
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#endif /* _GNUMAKE_H_ */
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