| 1 | /* External interfaces usable by dynamic objects loaded into GNU Make.
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| 2 | --THIS API IS A "TECHNOLOGY PREVIEW" ONLY. IT IS NOT A STABLE INTERFACE--
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| 3 |
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| 4 | Copyright (C) 2013-2020 Free Software Foundation, Inc.
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| 5 | This file is part of GNU Make.
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| 6 |
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| 7 | GNU Make is free software; you can redistribute it and/or modify it under the
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| 8 | terms of the GNU General Public License as published by the Free Software
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| 9 | Foundation; either version 3 of the License, or (at your option) any later
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| 10 | version.
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| 11 |
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| 12 | GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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| 14 | A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License along with
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| 17 | this program. If not, see <http://www.gnu.org/licenses/>. */
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| 18 |
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| 19 | #ifndef _GNUMAKE_H_
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| 20 | #define _GNUMAKE_H_
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| 21 |
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| 22 | /* Specify the location of elements read from makefiles. */
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| 23 | typedef struct
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| 24 | {
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| 25 | const char *filenm;
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| 26 | unsigned long lineno;
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| 27 | } gmk_floc;
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| 28 |
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| 29 | typedef char *(*gmk_func_ptr)(const char *nm, unsigned int argc, char **argv);
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| 30 |
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| 31 | #ifdef _WIN32
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| 32 | # ifdef GMK_BUILDING_MAKE
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| 33 | # define GMK_EXPORT __declspec(dllexport)
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| 34 | # else
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| 35 | # define GMK_EXPORT __declspec(dllimport)
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| 36 | # endif
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| 37 | #else
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| 38 | # define GMK_EXPORT
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| 39 | #endif
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| 40 |
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| 41 | /* Free memory returned by the gmk_expand() function. */
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| 42 | GMK_EXPORT void gmk_free (char *str);
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| 43 |
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| 44 | /* Allocate memory in GNU make's context. */
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| 45 | GMK_EXPORT char *gmk_alloc (unsigned int len);
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| 46 |
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| 47 | /* Run $(eval ...) on the provided string BUFFER. */
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| 48 | GMK_EXPORT void gmk_eval (const char *buffer, const gmk_floc *floc);
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| 49 |
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| 50 | /* Run GNU make expansion on the provided string STR.
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| 51 | Returns an allocated buffer that the caller must free with gmk_free(). */
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| 52 | GMK_EXPORT char *gmk_expand (const char *str);
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| 53 |
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| 54 | /* Register a new GNU make function NAME (maximum of 255 chars long).
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| 55 | When the function is expanded in the makefile, FUNC will be invoked with
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| 56 | the appropriate arguments.
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| 57 |
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| 58 | The return value of FUNC must be either NULL, in which case it expands to
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| 59 | the empty string, or a pointer to the result of the expansion in a string
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| 60 | created by gmk_alloc(). GNU make will free the memory when it's done.
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| 61 |
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| 62 | MIN_ARGS is the minimum number of arguments the function requires.
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| 63 | MAX_ARGS is the maximum number of arguments (or 0 if there's no maximum).
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| 64 | MIN_ARGS and MAX_ARGS may not exceed 255.
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| 65 |
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| 66 | The FLAGS value may be GMK_FUNC_DEFAULT, or one or more of the following
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| 67 | flags OR'd together:
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| 68 |
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| 69 | GMK_FUNC_NOEXPAND: the arguments to the function will be not be expanded
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| 70 | before FUNC is called.
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| 71 | */
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| 72 | GMK_EXPORT void gmk_add_function (const char *name, gmk_func_ptr func,
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| 73 | unsigned int min_args, unsigned int max_args,
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| 74 | unsigned int flags);
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| 75 |
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| 76 | #define GMK_FUNC_DEFAULT 0x00
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| 77 | #define GMK_FUNC_NOEXPAND 0x01
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| 78 |
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| 79 | #endif /* _GNUMAKE_H_ */
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