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1 | #!@-bindir-@/guile \ |
2 | -e main -s | |
3 | !# | |
4 | ;;;; guile-config --- utility for linking programs with Guile | |
5 | ;;;; Jim Blandy <jim@red-bean.com> --- September 1997 | |
093d0179 | 6 | ;;;; |
12ce651a | 7 | ;;;; Copyright (C) 1998, 2001 Free Software Foundation, Inc. |
093d0179 JB |
8 | ;;;; |
9 | ;;;; This program is free software; you can redistribute it and/or modify | |
10 | ;;;; it under the terms of the GNU General Public License as published by | |
11 | ;;;; the Free Software Foundation; either version 2, or (at your option) | |
12 | ;;;; any later version. | |
13 | ;;;; | |
14 | ;;;; This program is distributed in the hope that it will be useful, | |
15 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;;;; GNU General Public License for more details. | |
18 | ;;;; | |
19 | ;;;; You should have received a copy of the GNU General Public License | |
20 | ;;;; along with this software; see the file COPYING. If not, write to | |
21 | ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
22 | ;;;; Boston, MA 02111-1307 USA | |
23 | ;;;; | |
24 | ;;;; As a special exception, the Free Software Foundation gives permission | |
25 | ;;;; for additional uses of the text contained in its release of GUILE. | |
26 | ;;;; | |
27 | ;;;; The exception is that, if you link the GUILE library with other files | |
28 | ;;;; to produce an executable, this does not by itself cause the | |
29 | ;;;; resulting executable to be covered by the GNU General Public License. | |
30 | ;;;; Your use of that executable is in no way restricted on account of | |
31 | ;;;; linking the GUILE library code into it. | |
32 | ;;;; | |
33 | ;;;; This exception does not however invalidate any other reasons why | |
34 | ;;;; the executable file might be covered by the GNU General Public License. | |
35 | ;;;; | |
36 | ;;;; This exception applies only to the code released by the | |
37 | ;;;; Free Software Foundation under the name GUILE. If you copy | |
38 | ;;;; code from other Free Software Foundation releases into a copy of | |
39 | ;;;; GUILE, as the General Public License permits, the exception does | |
40 | ;;;; not apply to the code that you add in this way. To avoid misleading | |
41 | ;;;; anyone as to the status of such modified files, you must delete | |
42 | ;;;; this exception notice from them. | |
43 | ;;;; | |
44 | ;;;; If you write modifications of your own for GUILE, it is your choice | |
45 | ;;;; whether to permit this exception to apply to your modifications. | |
46 | ;;;; If you do not wish that, delete this exception notice. | |
9a56cb24 JB |
47 | |
48 | ;;; TODO: | |
49 | ;;; * Add some plausible structure for returning the right exit status, | |
50 | ;;; just something that encourages people to do the correct thing. | |
51 | ;;; * Implement the static library support. This requires that | |
52 | ;;; some portion of the module system be done. | |
53 | ||
da509974 | 54 | (use-modules (ice-9 string-fun)) |
9a56cb24 JB |
55 | |
56 | \f | |
57 | ;;;; main function, command-line processing | |
58 | ||
59 | ;;; The script's entry point. | |
60 | (define (main args) | |
61 | (set-program-name! (car args)) | |
62 | (let ((args (cdr args))) | |
63 | (cond | |
64 | ((null? args) (show-help '()) | |
65 | (quit 1)) | |
66 | ((assoc (car args) command-table) | |
67 | => (lambda (row) | |
68 | (set! subcommand-name (car args)) | |
69 | ((cadr row) (cdr args)))) | |
70 | (else (show-help '()) | |
71 | (quit 1))))) | |
72 | ||
73 | (define program-name #f) | |
74 | (define subcommand-name #f) | |
75 | (define program-version "@-GUILE_VERSION-@") | |
76 | ||
77 | ;;; Given an executable path PATH, set program-name to something | |
78 | ;;; appropriate f or use in error messages (i.e., with leading | |
79 | ;;; directory names stripped). | |
80 | (define (set-program-name! path) | |
da509974 | 81 | (set! program-name (basename path))) |
9a56cb24 JB |
82 | |
83 | (define (show-help args) | |
84 | (cond | |
85 | ((null? args) (show-help-overview)) | |
86 | ((assoc (car args) command-table) | |
87 | => (lambda (row) ((caddr row)))) | |
88 | (else | |
89 | (show-help-overview)))) | |
90 | ||
91 | (define (show-help-overview) | |
204c26b9 JB |
92 | (display-line-error "Usage: ") |
93 | (for-each (lambda (row) ((cadddr row))) | |
94 | command-table)) | |
95 | ||
96 | (define (usage-help) | |
97 | (let ((dle display-line-error) | |
98 | (p program-name)) | |
99 | (dle " " p " --help - show usage info (this message)") | |
100 | (dle " " p " --help SUBCOMMAND - show help for SUBCOMMAND"))) | |
9a56cb24 JB |
101 | |
102 | (define (show-version args) | |
204c26b9 JB |
103 | (display-line-error program-name " - Guile version " program-version)) |
104 | ||
105 | (define (help-version) | |
106 | (let ((dle display-line-error)) | |
107 | (dle "Usage: " program-name " --version") | |
108 | (dle "Show the version of this script. This is also the version of") | |
109 | (dle "Guile this script was installed with."))) | |
110 | ||
111 | (define (usage-version) | |
112 | (display-line-error | |
113 | " " program-name " --version - show installed script and Guile version")) | |
9a56cb24 JB |
114 | |
115 | \f | |
116 | ;;;; the "link" subcommand | |
117 | ||
118 | ;;; Write a set of linker flags to standard output to include the | |
119 | ;;; libraries that libguile needs to link against. | |
120 | ;;; | |
121 | ;;; In the long run, we want to derive these flags from Guile module | |
122 | ;;; declarations files that are installed along the load path. For | |
123 | ;;; now, we're just going to reach into Guile's configuration info and | |
124 | ;;; hack it out. | |
125 | (define (build-link args) | |
9a56cb24 | 126 | |
da509974 JB |
127 | ;; If PATH has the form FOO/libBAR.a, return the substring |
128 | ;; BAR, otherwise return #f. | |
129 | (define (match-lib path) | |
130 | (let* ((base (basename path)) | |
131 | (len (string-length base))) | |
132 | (if (and (> len 5) | |
9fb77163 DH |
133 | (string=? (substring base 0 3) "lib") |
134 | (string=? (substring base (- len 2)) ".a")) | |
135 | (substring base 3 (- len 2)) | |
da509974 JB |
136 | #f))) |
137 | ||
6073aaf2 MD |
138 | (if (> (length args) 0) |
139 | (error | |
140 | (string-append program-name | |
141 | " link: arguments to subcommand not yet implemented"))) | |
142 | ||
e96452c4 MD |
143 | (let* ((flags |
144 | (let loop ((libs | |
145 | ;; Get the string of linker flags we used to build | |
146 | ;; Guile, and break it up into a list. | |
147 | (separate-fields-discarding-char #\space | |
148 | (get-build-info 'LIBS) | |
149 | list))) | |
150 | ||
151 | (cond | |
152 | ((null? libs) '()) | |
153 | ||
154 | ;; Turn any "FOO/libBAR.a" elements into "-lBAR". | |
155 | ((match-lib (car libs)) | |
156 | => (lambda (bar) | |
157 | (cons (string-append "-l" bar) | |
158 | (loop (cdr libs))))) | |
159 | ||
160 | ;; Remove any empty strings that may have seeped in there. | |
161 | ((string=? (car libs) "") (loop (cdr libs))) | |
9a56cb24 | 162 | |
e96452c4 | 163 | (else (cons (car libs) (loop (cdr libs))))))) |
9a56cb24 | 164 | |
e96452c4 MD |
165 | ;; Include libguile itself in the list, along with the |
166 | ;; directory it was installed in. | |
167 | (flags (cons (string-append "-L" (get-build-info 'libdir)) | |
168 | (cons "-lguile" flags)))) | |
9a56cb24 | 169 | |
e96452c4 MD |
170 | ;; Display the flags, separated by spaces. |
171 | (display-separated flags) | |
172 | (newline))) | |
9a56cb24 JB |
173 | |
174 | (define (help-link) | |
175 | (let ((dle display-line-error)) | |
176 | (dle "Usage: " program-name " link") | |
177 | (dle "Print linker flags for building the `guile' executable.") | |
204c26b9 JB |
178 | (dle "Print the linker command-line flags necessary to link against") |
179 | (dle "the Guile library, and any other libraries it requires."))) | |
9a56cb24 | 180 | |
204c26b9 JB |
181 | (define (usage-link) |
182 | (display-line-error | |
183 | " " program-name " link - print libraries to link with")) | |
9a56cb24 | 184 | |
9a56cb24 | 185 | |
204c26b9 JB |
186 | \f |
187 | ;;;; The "compile" subcommand | |
9a56cb24 | 188 | |
817e0769 JB |
189 | (define (build-compile args) |
190 | (if (> (length args) 0) | |
191 | (error | |
192 | (string-append program-name | |
193 | " compile: no arguments expected"))) | |
194 | (display-line "-I" (get-build-info 'includedir))) | |
195 | ||
196 | (define (help-compile) | |
197 | (let ((dle display-line-error)) | |
198 | (dle "Usage: " program-name " compile") | |
199 | (dle "Print C compiler flags for compiling code that uses Guile.") | |
200 | (dle "This includes any `-I' flags needed to find Guile's header files."))) | |
201 | ||
202 | (define (usage-compile) | |
203 | (display-line-error | |
204 | " " program-name " compile - print C compiler flags to compile with")) | |
9a56cb24 JB |
205 | |
206 | \f | |
207 | ;;;; The "info" subcommand | |
208 | ||
209 | (define (build-info args) | |
210 | (cond | |
211 | ((null? args) (show-all-vars)) | |
212 | ((null? (cdr args)) (show-var (car args))) | |
213 | (else (display-line-error "Usage: " program-name " info [VAR]") | |
214 | (quit 2)))) | |
215 | ||
216 | (define (show-all-vars) | |
217 | (for-each (lambda (binding) | |
218 | (display-line (car binding) " = " (cdr binding))) | |
219 | %guile-build-info)) | |
220 | ||
221 | (define (show-var var) | |
222 | (display (get-build-info (string->symbol var))) | |
223 | (newline)) | |
224 | ||
225 | (define (help-info) | |
204c26b9 JB |
226 | (let ((d display-line-error)) |
227 | (d "Usage: " program-name " info [VAR]") | |
228 | (d "Display the value of the Makefile variable VAR used when Guile") | |
229 | (d "was built. If VAR is omitted, display all Makefile variables.") | |
230 | (d "Use this command to find out where Guile was installed,") | |
231 | (d "where it will look for Scheme code at run-time, and so on."))) | |
9a56cb24 | 232 | |
204c26b9 JB |
233 | (define (usage-info) |
234 | (display-line-error | |
235 | " " program-name " info [VAR] - print Guile build directories")) | |
9a56cb24 JB |
236 | |
237 | \f | |
238 | ;;;; trivial utilities | |
239 | ||
240 | (define (get-build-info name) | |
241 | (let ((val (assq name %guile-build-info))) | |
242 | (if (not (pair? val)) | |
243 | (begin | |
244 | (display-line-error | |
245 | program-name " " subcommand-name ": no such build-info: " name) | |
246 | (quit 2))) | |
247 | (cdr val))) | |
248 | ||
249 | (define (display-line . args) | |
250 | (apply display-line-port (current-output-port) args)) | |
251 | ||
252 | (define (display-line-error . args) | |
253 | (apply display-line-port (current-error-port) args)) | |
254 | ||
255 | (define (display-line-port port . args) | |
256 | (for-each (lambda (arg) (display arg port)) | |
257 | args) | |
709a308d | 258 | (newline port)) |
9a56cb24 JB |
259 | |
260 | (define (display-separated args) | |
261 | (let loop ((args args)) | |
262 | (cond ((null? args)) | |
263 | ((null? (cdr args)) (display (car args))) | |
264 | (else (display (car args)) | |
265 | (display " ") | |
266 | (loop (cdr args)))))) | |
267 | ||
268 | \f | |
269 | ;;;; the command table | |
270 | ||
271 | ;;; We define this down here, so Guile builds the list after all the | |
272 | ;;; functions have been defined. | |
273 | (define command-table | |
274 | (list | |
204c26b9 JB |
275 | (list "--version" show-version help-version usage-version) |
276 | (list "--help" show-help show-help-overview usage-help) | |
277 | (list "link" build-link help-link usage-link) | |
278 | (list "compile" build-compile help-compile usage-compile) | |
279 | (list "info" build-info help-info usage-info))) | |
9a56cb24 JB |
280 | |
281 | \f | |
282 | ;;; Local Variables: | |
283 | ;;; mode: scheme | |
284 | ;;; End: |