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1 | ## Autoconf macros for working with Guile. |
2 | ## | |
3 | ## Copyright (C) 1998,2001 Free Software Foundation, Inc. | |
4 | ## | |
5 | ## This program is free software; you can redistribute it and/or modify | |
6 | ## it under the terms of the GNU General Public License as published by | |
7 | ## the Free Software Foundation; either version 2, or (at your option) | |
8 | ## any later version. | |
9 | ## | |
10 | ## This program is distributed in the hope that it will be useful, | |
11 | ## but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | ## GNU General Public License for more details. | |
14 | ## | |
15 | ## You should have received a copy of the GNU General Public License | |
16 | ## along with this software; see the file COPYING. If not, write to | |
17 | ## the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
18 | ## Boston, MA 02111-1307 USA | |
19 | ## | |
20 | ## As a special exception, the Free Software Foundation gives permission | |
21 | ## for additional uses of the text contained in its release of GUILE. | |
22 | ## | |
23 | ## The exception is that, if you link the GUILE library with other files | |
24 | ## to produce an executable, this does not by itself cause the | |
25 | ## resulting executable to be covered by the GNU General Public License. | |
26 | ## Your use of that executable is in no way restricted on account of | |
27 | ## linking the GUILE library code into it. | |
28 | ## | |
29 | ## This exception does not however invalidate any other reasons why | |
30 | ## the executable file might be covered by the GNU General Public License. | |
31 | ## | |
32 | ## This exception applies only to the code released by the | |
33 | ## Free Software Foundation under the name GUILE. If you copy | |
34 | ## code from other Free Software Foundation releases into a copy of | |
35 | ## GUILE, as the General Public License permits, the exception does | |
36 | ## not apply to the code that you add in this way. To avoid misleading | |
37 | ## anyone as to the status of such modified files, you must delete | |
38 | ## this exception notice from them. | |
39 | ## | |
40 | ## If you write modifications of your own for GUILE, it is your choice | |
41 | ## whether to permit this exception to apply to your modifications. | |
42 | ## If you do not wish that, delete this exception notice. | |
43 | ||
44 | ## Index | |
45 | ## ----- | |
46 | ## | |
47 | ## GUILE_PROGS -- set paths to Guile interpreter, config and tool programs | |
48 | ## GUILE_FLAGS -- set flags for compiling and linking with Guile | |
49 | ## GUILE_SITE_DIR -- find path to Guile "site" directory | |
50 | ## GUILE_CHECK -- evaluate Guile Scheme code and capture the return value | |
51 | ## GUILE_MODULE_CHECK -- check feature of a Guile Scheme module | |
52 | ## GUILE_MODULE_AVAILABLE -- check availability of a Guile Scheme module | |
53 | ## GUILE_MODULE_REQUIRED -- fail if a Guile Scheme module is unavailable | |
54 | ## GUILE_MODULE_EXPORTS -- check if a module exports a variable | |
55 | ## GUILE_MODULE_REQUIRED_EXPORT -- fail if a module doesn't export a variable | |
56 | ||
57 | ## Code | |
58 | ## ---- | |
59 | ||
8c4b7ca3 TTN |
60 | ## NOTE: Comments preceding an AC_DEFUN (starting from "Usage:") are massaged |
61 | ## into doc/ref/autoconf-macros.texi (see Makefile.am in that directory). | |
62 | ||
b6aaeeac TTN |
63 | # GUILE_PROGS -- set paths to Guile interpreter, config and tool programs |
64 | # | |
65 | # Usage: GUILE_PROGS | |
66 | # | |
8c4b7ca3 TTN |
67 | # This macro looks for programs @code{guile}, @code{guile-config} and |
68 | # @code{guile-tools}, and sets variables @var{GUILE}, @var{GUILE_CONFIG} and | |
69 | # @var{GUILE_TOOLS}, to their paths, respectively. If either of the first two | |
e12ed7aa | 70 | # is not found, signal error. |
b6aaeeac | 71 | # |
8c4b7ca3 | 72 | # The variables are marked for substitution, as by @code{AC_SUBST}. |
b6aaeeac TTN |
73 | # |
74 | AC_DEFUN([GUILE_PROGS], | |
75 | [AC_PATH_PROG(GUILE,guile) | |
76 | if test "$GUILE" = "" ; then | |
77 | AC_MSG_ERROR([guile required but not found]) | |
78 | fi | |
79 | AC_SUBST(GUILE) | |
80 | AC_PATH_PROG(GUILE_CONFIG,guile-config) | |
81 | if test "$GUILE_CONFIG" = "" ; then | |
82 | AC_MSG_ERROR([guile-config required but not found]) | |
83 | fi | |
84 | AC_SUBST(GUILE_CONFIG) | |
85 | AC_PATH_PROG(GUILE_TOOLS,guile-tools) | |
86 | AC_SUBST(GUILE_TOOLS) | |
87 | ]) | |
88 | ||
89 | # GUILE_FLAGS -- set flags for compiling and linking with Guile | |
90 | # | |
91 | # Usage: GUILE_FLAGS | |
92 | # | |
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93 | # This macro runs the @code{guile-config} script, installed with Guile, to |
94 | # find out where Guile's header files and libraries are installed. It sets | |
95 | # two variables, @var{GUILE_CFLAGS} and @var{GUILE_LDFLAGS}. | |
b6aaeeac | 96 | # |
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97 | # @var{GUILE_CFLAGS}: flags to pass to a C or C++ compiler to build code that |
98 | # uses Guile header files. This is almost always just a @code{-I} flag. | |
b6aaeeac | 99 | # |
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100 | # @var{GUILE_LDFLAGS}: flags to pass to the linker to link a program against |
101 | # Guile. This includes @code{-lguile} for the Guile library itself, any | |
102 | # libraries that Guile itself requires (like -lqthreads), and so on. It may | |
103 | # also include a @code{-L} flag to tell the compiler where to find the | |
b6aaeeac TTN |
104 | # libraries. |
105 | # | |
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106 | # The variables are marked for substitution, as by @code{AC_SUBST}. |
107 | # | |
108 | AC_DEFUN([GUILE_FLAGS], | |
109 | [AC_REQUIRE([GUILE_PROGS])dnl | |
110 | AC_MSG_CHECKING([libguile compile flags]) | |
111 | GUILE_CFLAGS="`$GUILE_CONFIG compile`" | |
112 | AC_MSG_RESULT([$GUILE_CFLAGS]) | |
113 | AC_MSG_CHECKING([libguile link flags]) | |
114 | GUILE_LDFLAGS="`$GUILE_CONFIG link`" | |
115 | AC_MSG_RESULT([$GUILE_LDFLAGS]) | |
2b9fe19f JB |
116 | AC_SUBST(GUILE_CFLAGS) |
117 | AC_SUBST(GUILE_LDFLAGS) | |
8c4b7ca3 | 118 | ]) |
d0001215 | 119 | |
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120 | # GUILE_SITE_DIR -- find path to Guile "site" directory |
121 | # | |
122 | # Usage: GUILE_SITE_DIR | |
123 | # | |
124 | # This looks for Guile's "site" directory, usually something like | |
8c4b7ca3 | 125 | # PREFIX/share/guile/site, and sets var @var{GUILE_SITE} to the path. |
b6aaeeac TTN |
126 | # Note that the var name is different from the macro name. |
127 | # | |
8c4b7ca3 | 128 | # The variable is marked for substitution, as by @code{AC_SUBST}. |
b6aaeeac TTN |
129 | # |
130 | AC_DEFUN([GUILE_SITE_DIR], | |
131 | [AC_REQUIRE([GUILE_PROGS])dnl | |
132 | AC_MSG_CHECKING(for Guile site directory) | |
133 | GUILE_SITE=`[$GUILE_CONFIG] info pkgdatadir`/site | |
134 | AC_MSG_RESULT($GUILE_SITE) | |
135 | AC_SUBST(GUILE_SITE) | |
136 | ]) | |
137 | ||
138 | # GUILE_CHECK -- evaluate Guile Scheme code and capture the return value | |
139 | # | |
140 | # Usage: GUILE_CHECK_RETVAL(var,check) | |
141 | # | |
8c4b7ca3 TTN |
142 | # @var{var} is a shell variable name to be set to the return value. |
143 | # @var{check} is a Guile Scheme expression, evaluated with "$GUILE -c", and | |
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144 | # returning either 0 or non-#f to indicate the check passed. |
145 | # Non-0 number or #f indicates failure. | |
146 | # Avoid using the character "#" since that confuses autoconf. | |
147 | # | |
148 | AC_DEFUN([GUILE_CHECK], | |
149 | [AC_REQUIRE([GUILE_PROGS]) | |
150 | $GUILE -c "$2" > /dev/null 2>&1 | |
151 | $1=$? | |
152 | ]) | |
153 | ||
154 | # GUILE_MODULE_CHECK -- check feature of a Guile Scheme module | |
155 | # | |
156 | # Usage: GUILE_MODULE_CHECK(var,module,featuretest,description) | |
157 | # | |
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158 | # @var{var} is a shell variable name to be set to "yes" or "no". |
159 | # @var{module} is a list of symbols, like: (ice-9 common-list). | |
160 | # @var{featuretest} is an expression acceptable to GUILE_CHECK, q.v. | |
161 | # @var{description} is a present-tense verb phrase (passed to AC_MSG_CHECKING). | |
b6aaeeac TTN |
162 | # |
163 | AC_DEFUN([GUILE_MODULE_CHECK], | |
164 | [AC_MSG_CHECKING([if $2 $4]) | |
165 | GUILE_CHECK($1,(use-modules $2) (exit ((lambda () $3)))) | |
166 | if test "$$1" = "0" ; then $1=yes ; else $1=no ; fi | |
167 | AC_MSG_RESULT($$1) | |
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168 | ]) |
169 | ||
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170 | # GUILE_MODULE_AVAILABLE -- check availability of a Guile Scheme module |
171 | # | |
172 | # Usage: GUILE_MODULE_AVAILABLE(var,module) | |
173 | # | |
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174 | # @var{var} is a shell variable name to be set to "yes" or "no". |
175 | # @var{module} is a list of symbols, like: (ice-9 common-list). | |
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176 | # |
177 | AC_DEFUN([GUILE_MODULE_AVAILABLE], | |
178 | [GUILE_MODULE_CHECK($1,$2,0,is available) | |
d0001215 TTN |
179 | ]) |
180 | ||
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181 | # GUILE_MODULE_REQUIRED -- fail if a Guile Scheme module is unavailable |
182 | # | |
183 | # Usage: GUILE_MODULE_REQUIRED(symlist) | |
184 | # | |
8c4b7ca3 TTN |
185 | # @var{symlist} is a list of symbols, WITHOUT surrounding parens, |
186 | # like: ice-9 common-list. | |
b6aaeeac TTN |
187 | # |
188 | AC_DEFUN([GUILE_MODULE_REQUIRED], | |
189 | [GUILE_MODULE_AVAILABLE(ac_guile_module_required, ($1)) | |
d0001215 TTN |
190 | if test "$ac_guile_module_required" = "no" ; then |
191 | AC_MSG_ERROR([required guile module not found: ($1)]) | |
192 | fi | |
193 | ]) | |
194 | ||
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195 | # GUILE_MODULE_EXPORTS -- check if a module exports a variable |
196 | # | |
197 | # Usage: GUILE_MODULE_EXPORTS(var,module,modvar) | |
198 | # | |
8c4b7ca3 TTN |
199 | # @var{var} is a shell variable to be set to "yes" or "no". |
200 | # @var{module} is a list of symbols, like: (ice-9 common-list). | |
201 | # @var{modvar} is the Guile Scheme variable to check. | |
b6aaeeac TTN |
202 | # |
203 | AC_DEFUN([GUILE_MODULE_EXPORTS], | |
204 | [GUILE_MODULE_CHECK($1,$2,$3,exports `$3') | |
205 | ]) | |
206 | ||
207 | # GUILE_MODULE_REQUIRED_EXPORT -- fail if a module doesn't export a variable | |
208 | # | |
209 | # Usage: GUILE_MODULE_REQUIRED_EXPORT(module,modvar) | |
210 | # | |
8c4b7ca3 TTN |
211 | # @var{module} is a list of symbols, like: (ice-9 common-list). |
212 | # @var{modvar} is the Guile Scheme variable to check. | |
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213 | # |
214 | AC_DEFUN([GUILE_MODULE_REQUIRED_EXPORT], | |
215 | [GUILE_MODULE_EXPORTS(guile_module_required_export,$1,$2) | |
216 | if test "$guile_module_required_export" = "no" ; then | |
217 | AC_MSG_ERROR([module $1 does not export $2; required]) | |
218 | fi | |
219 | ]) | |
220 | ||
221 | ## guile.m4 ends here |