1 /* GNU Guile interface for GNU Make.
2 Copyright (C) 2011-2013 Free Software Foundation, Inc.
3 This file is part of GNU Make.
5 GNU Make is free software; you can redistribute it and/or modify it under the
6 terms of the GNU General Public License as published by the Free Software
7 Foundation; either version 3 of the License, or (at your option) any later
10 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
11 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along with
15 this program. If not, see <http://www.gnu.org/licenses/>. */
27 /* Pre-2.0 versions of Guile don't have a typedef for gsubr function types. */
28 #if SCM_MAJOR_VERSION < 2
29 # define GSUBR_TYPE SCM (*) ()
30 /* Guile 1.x doesn't really support i18n. */
31 # define EVAL_STRING(_s) scm_c_eval_string (_s)
33 # define GSUBR_TYPE scm_t_subr
34 # define EVAL_STRING(_s) scm_eval_string (scm_from_utf8_string (_s))
37 static SCM make_mod = SCM_EOL;
38 static SCM obj_to_str = SCM_EOL;
40 /* Convert an SCM object into a string. */
42 cvt_scm_to_str (SCM obj)
44 return scm_to_locale_string (scm_call_1 (obj_to_str, obj));
47 /* Perform the GNU make expansion function. */
49 guile_expand_wrapper (SCM obj)
51 char *str = cvt_scm_to_str (obj);
55 DB (DB_BASIC, (_("guile: Expanding '%s'\n"), str));
56 res = gmk_expand (str);
57 ret = scm_from_locale_string (res);
65 /* Perform the GNU make eval function. */
67 guile_eval_wrapper (SCM obj)
69 char *str = cvt_scm_to_str (obj);
71 DB (DB_BASIC, (_("guile: Evaluating '%s'\n"), str));
77 /* Invoked by scm_c_define_module(), in the context of the GNU make module. */
79 guile_define_module (void *data UNUSED)
81 /* Ingest the predefined Guile module for GNU make. */
82 #include "gmk-default.h"
84 /* Register a subr for GNU make's eval capability. */
85 scm_c_define_gsubr ("gmk-expand", 1, 0, 0, (GSUBR_TYPE) guile_expand_wrapper);
87 /* Register a subr for GNU make's eval capability. */
88 scm_c_define_gsubr ("gmk-eval", 1, 0, 0, (GSUBR_TYPE) guile_eval_wrapper);
90 /* Define the rest of the module. */
91 scm_c_eval_string (GUILE_module_defn);
94 /* Initialize the GNU make Guile module. */
96 guile_init (void *arg UNUSED)
98 /* Define the module. */
99 make_mod = scm_c_define_module ("gnu make", guile_define_module, NULL);
101 /* Get a reference to the object-to-string translator, for later. */
102 obj_to_str = scm_variable_ref (scm_c_module_lookup (make_mod, "obj-to-str"));
104 /* Import the GNU make module exports into the generic space. */
105 scm_c_eval_string ("(use-modules (gnu make))");
111 internal_guile_eval (void *arg)
113 return cvt_scm_to_str (EVAL_STRING (arg));
116 /* This is the function registered with make */
118 func_guile (const char *funcname UNUSED, unsigned int argc UNUSED, char **argv)
124 /* Initialize the Guile interpreter. */
125 scm_with_guile (guile_init, NULL);
129 if (argv[0] && argv[0][0] != '\0')
130 return scm_with_guile (internal_guile_eval, argv[0]);
135 /* ----- Public interface ----- */
137 /* We could send the flocp to define_new_function(), but since guile is
138 "kind of" built-in, that didn't seem so useful. */
140 guile_gmake_setup (const gmk_floc *flocp UNUSED)
142 /* Create a make function "guile". */
143 gmk_add_function ("guile", func_guile, 0, 1, GMK_FUNC_DEFAULT);