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1 | ## Autoconf macros for working with Guile. |
2 | ## | |
5ad38816 | 3 | ## Copyright (C) 1998,2001, 2006, 2010 Free Software Foundation, Inc. |
b6aaeeac | 4 | ## |
73be1d9e | 5 | ## This library is free software; you can redistribute it and/or |
53befeb7 NJ |
6 | ## modify it under the terms of the GNU Lesser General Public License |
7 | ## as published by the Free Software Foundation; either version 3 of | |
8 | ## the License, or (at your option) any later version. | |
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9 | ## |
10 | ## This library is distributed in the hope that it will be useful, | |
b6aaeeac | 11 | ## but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | ## Lesser General Public License for more details. | |
14 | ## | |
15 | ## You should have received a copy of the GNU Lesser General Public | |
16 | ## License along with this library; if not, write to the Free Software | |
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17 | ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
18 | ## 02110-1301 USA | |
b6aaeeac | 19 | |
5ad38816 | 20 | # serial 10 |
84eebc64 | 21 | |
b6aaeeac TTN |
22 | ## Index |
23 | ## ----- | |
24 | ## | |
25 | ## GUILE_PROGS -- set paths to Guile interpreter, config and tool programs | |
26 | ## GUILE_FLAGS -- set flags for compiling and linking with Guile | |
27 | ## GUILE_SITE_DIR -- find path to Guile "site" directory | |
28 | ## GUILE_CHECK -- evaluate Guile Scheme code and capture the return value | |
29 | ## GUILE_MODULE_CHECK -- check feature of a Guile Scheme module | |
30 | ## GUILE_MODULE_AVAILABLE -- check availability of a Guile Scheme module | |
31 | ## GUILE_MODULE_REQUIRED -- fail if a Guile Scheme module is unavailable | |
32 | ## GUILE_MODULE_EXPORTS -- check if a module exports a variable | |
33 | ## GUILE_MODULE_REQUIRED_EXPORT -- fail if a module doesn't export a variable | |
34 | ||
35 | ## Code | |
36 | ## ---- | |
37 | ||
8c4b7ca3 TTN |
38 | ## NOTE: Comments preceding an AC_DEFUN (starting from "Usage:") are massaged |
39 | ## into doc/ref/autoconf-macros.texi (see Makefile.am in that directory). | |
40 | ||
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41 | # GUILE_PROGS -- set paths to Guile interpreter, config and tool programs |
42 | # | |
43 | # Usage: GUILE_PROGS | |
44 | # | |
8c4b7ca3 TTN |
45 | # This macro looks for programs @code{guile}, @code{guile-config} and |
46 | # @code{guile-tools}, and sets variables @var{GUILE}, @var{GUILE_CONFIG} and | |
47 | # @var{GUILE_TOOLS}, to their paths, respectively. If either of the first two | |
e12ed7aa | 48 | # is not found, signal error. |
b6aaeeac | 49 | # |
8c4b7ca3 | 50 | # The variables are marked for substitution, as by @code{AC_SUBST}. |
b6aaeeac TTN |
51 | # |
52 | AC_DEFUN([GUILE_PROGS], | |
53 | [AC_PATH_PROG(GUILE,guile) | |
54 | if test "$GUILE" = "" ; then | |
55 | AC_MSG_ERROR([guile required but not found]) | |
56 | fi | |
57 | AC_SUBST(GUILE) | |
58 | AC_PATH_PROG(GUILE_CONFIG,guile-config) | |
59 | if test "$GUILE_CONFIG" = "" ; then | |
60 | AC_MSG_ERROR([guile-config required but not found]) | |
61 | fi | |
62 | AC_SUBST(GUILE_CONFIG) | |
63 | AC_PATH_PROG(GUILE_TOOLS,guile-tools) | |
64 | AC_SUBST(GUILE_TOOLS) | |
65 | ]) | |
66 | ||
67 | # GUILE_FLAGS -- set flags for compiling and linking with Guile | |
68 | # | |
69 | # Usage: GUILE_FLAGS | |
70 | # | |
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71 | # This macro runs the @code{guile-config} script, installed with Guile, to |
72 | # find out where Guile's header files and libraries are installed. It sets | |
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73 | # four variables, @var{GUILE_CFLAGS}, @var{GUILE_LDFLAGS}, @var{GUILE_LIBS}, |
74 | # and @var{GUILE_LTLIBS}. | |
b6aaeeac | 75 | # |
8c4b7ca3 | 76 | # @var{GUILE_CFLAGS}: flags to pass to a C or C++ compiler to build code that |
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77 | # uses Guile header files. This is almost always just one or more @code{-I} |
78 | # flags. | |
b6aaeeac | 79 | # |
1867d3e0 | 80 | # @var{GUILE_LDFLAGS}: flags to pass to the compiler to link a program against |
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81 | # Guile. This includes @code{-lguile} for the Guile library itself, any |
82 | # libraries that Guile itself requires (like -lqthreads), and so on. It may | |
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83 | # also include one or more @code{-L} flag to tell the compiler where to find |
84 | # the libraries. But it does not include flags that influence the program's | |
85 | # runtime search path for libraries, and will therefore lead to a program | |
86 | # that fails to start, unless all necessary libraries are installed in a | |
87 | # standard location such as @file{/usr/lib}. | |
88 | # | |
89 | # @var{GUILE_LIBS} and @var{GUILE_LTLIBS}: flags to pass to the compiler or to | |
90 | # libtool, respectively, to link a program against Guile. It includes flags | |
91 | # that augment the program's runtime search path for libraries, so that shared | |
92 | # libraries will be found at the location where they were during linking, even | |
93 | # in non-standard locations. @var{GUILE_LIBS} is to be used when linking the | |
94 | # program directly with the compiler, whereas @var{GUILE_LTLIBS} is to be used | |
95 | # when linking the program is done through libtool. | |
b6aaeeac | 96 | # |
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97 | # The variables are marked for substitution, as by @code{AC_SUBST}. |
98 | # | |
99 | AC_DEFUN([GUILE_FLAGS], | |
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100 | [dnl Find guile-config. |
101 | AC_REQUIRE([GUILE_PROGS])dnl | |
102 | ||
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103 | AC_MSG_CHECKING([libguile compile flags]) |
104 | GUILE_CFLAGS="`$GUILE_CONFIG compile`" | |
105 | AC_MSG_RESULT([$GUILE_CFLAGS]) | |
1867d3e0 | 106 | |
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107 | AC_MSG_CHECKING([libguile link flags]) |
108 | GUILE_LDFLAGS="`$GUILE_CONFIG link`" | |
109 | AC_MSG_RESULT([$GUILE_LDFLAGS]) | |
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110 | |
111 | dnl Determine the platform dependent parameters needed to use rpath. | |
112 | dnl AC_LIB_LINKFLAGS_FROM_LIBS is defined in gnulib/m4/lib-link.m4 and needs | |
113 | dnl the file gnulib/build-aux/config.rpath. | |
114 | AC_LIB_LINKFLAGS_FROM_LIBS([GUILE_LIBS], [$GUILE_LDFLAGS], []) | |
115 | GUILE_LIBS="$GUILE_LDFLAGS $GUILE_LIBS" | |
116 | AC_LIB_LINKFLAGS_FROM_LIBS([GUILE_LTLIBS], [$GUILE_LDFLAGS], [yes]) | |
117 | GUILE_LTLIBS="$GUILE_LDFLAGS $GUILE_LTLIBS" | |
118 | ||
119 | AC_SUBST([GUILE_CFLAGS]) | |
120 | AC_SUBST([GUILE_LDFLAGS]) | |
121 | AC_SUBST([GUILE_LIBS]) | |
122 | AC_SUBST([GUILE_LTLIBS]) | |
8c4b7ca3 | 123 | ]) |
d0001215 | 124 | |
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125 | # GUILE_SITE_DIR -- find path to Guile "site" directory |
126 | # | |
127 | # Usage: GUILE_SITE_DIR | |
128 | # | |
129 | # This looks for Guile's "site" directory, usually something like | |
8c4b7ca3 | 130 | # PREFIX/share/guile/site, and sets var @var{GUILE_SITE} to the path. |
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131 | # Note that the var name is different from the macro name. |
132 | # | |
8c4b7ca3 | 133 | # The variable is marked for substitution, as by @code{AC_SUBST}. |
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134 | # |
135 | AC_DEFUN([GUILE_SITE_DIR], | |
136 | [AC_REQUIRE([GUILE_PROGS])dnl | |
137 | AC_MSG_CHECKING(for Guile site directory) | |
922d3695 | 138 | GUILE_SITE=`[$GUILE_CONFIG] info sitedir` |
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139 | if test "$GUILE_SITE" = ""; then |
140 | GUILE_SITE=`[$GUILE_CONFIG] info pkgdatadir`/site | |
141 | fi | |
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142 | AC_MSG_RESULT($GUILE_SITE) |
143 | AC_SUBST(GUILE_SITE) | |
144 | ]) | |
145 | ||
146 | # GUILE_CHECK -- evaluate Guile Scheme code and capture the return value | |
147 | # | |
148 | # Usage: GUILE_CHECK_RETVAL(var,check) | |
149 | # | |
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150 | # @var{var} is a shell variable name to be set to the return value. |
151 | # @var{check} is a Guile Scheme expression, evaluated with "$GUILE -c", and | |
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152 | # returning either 0 or non-#f to indicate the check passed. |
153 | # Non-0 number or #f indicates failure. | |
154 | # Avoid using the character "#" since that confuses autoconf. | |
155 | # | |
156 | AC_DEFUN([GUILE_CHECK], | |
157 | [AC_REQUIRE([GUILE_PROGS]) | |
158 | $GUILE -c "$2" > /dev/null 2>&1 | |
159 | $1=$? | |
160 | ]) | |
161 | ||
162 | # GUILE_MODULE_CHECK -- check feature of a Guile Scheme module | |
163 | # | |
164 | # Usage: GUILE_MODULE_CHECK(var,module,featuretest,description) | |
165 | # | |
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166 | # @var{var} is a shell variable name to be set to "yes" or "no". |
167 | # @var{module} is a list of symbols, like: (ice-9 common-list). | |
168 | # @var{featuretest} is an expression acceptable to GUILE_CHECK, q.v. | |
169 | # @var{description} is a present-tense verb phrase (passed to AC_MSG_CHECKING). | |
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170 | # |
171 | AC_DEFUN([GUILE_MODULE_CHECK], | |
172 | [AC_MSG_CHECKING([if $2 $4]) | |
173 | GUILE_CHECK($1,(use-modules $2) (exit ((lambda () $3)))) | |
174 | if test "$$1" = "0" ; then $1=yes ; else $1=no ; fi | |
175 | AC_MSG_RESULT($$1) | |
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176 | ]) |
177 | ||
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178 | # GUILE_MODULE_AVAILABLE -- check availability of a Guile Scheme module |
179 | # | |
180 | # Usage: GUILE_MODULE_AVAILABLE(var,module) | |
181 | # | |
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182 | # @var{var} is a shell variable name to be set to "yes" or "no". |
183 | # @var{module} is a list of symbols, like: (ice-9 common-list). | |
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184 | # |
185 | AC_DEFUN([GUILE_MODULE_AVAILABLE], | |
186 | [GUILE_MODULE_CHECK($1,$2,0,is available) | |
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187 | ]) |
188 | ||
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189 | # GUILE_MODULE_REQUIRED -- fail if a Guile Scheme module is unavailable |
190 | # | |
191 | # Usage: GUILE_MODULE_REQUIRED(symlist) | |
192 | # | |
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193 | # @var{symlist} is a list of symbols, WITHOUT surrounding parens, |
194 | # like: ice-9 common-list. | |
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195 | # |
196 | AC_DEFUN([GUILE_MODULE_REQUIRED], | |
197 | [GUILE_MODULE_AVAILABLE(ac_guile_module_required, ($1)) | |
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198 | if test "$ac_guile_module_required" = "no" ; then |
199 | AC_MSG_ERROR([required guile module not found: ($1)]) | |
200 | fi | |
201 | ]) | |
202 | ||
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203 | # GUILE_MODULE_EXPORTS -- check if a module exports a variable |
204 | # | |
205 | # Usage: GUILE_MODULE_EXPORTS(var,module,modvar) | |
206 | # | |
8c4b7ca3 TTN |
207 | # @var{var} is a shell variable to be set to "yes" or "no". |
208 | # @var{module} is a list of symbols, like: (ice-9 common-list). | |
209 | # @var{modvar} is the Guile Scheme variable to check. | |
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210 | # |
211 | AC_DEFUN([GUILE_MODULE_EXPORTS], | |
212 | [GUILE_MODULE_CHECK($1,$2,$3,exports `$3') | |
213 | ]) | |
214 | ||
215 | # GUILE_MODULE_REQUIRED_EXPORT -- fail if a module doesn't export a variable | |
216 | # | |
217 | # Usage: GUILE_MODULE_REQUIRED_EXPORT(module,modvar) | |
218 | # | |
8c4b7ca3 TTN |
219 | # @var{module} is a list of symbols, like: (ice-9 common-list). |
220 | # @var{modvar} is the Guile Scheme variable to check. | |
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221 | # |
222 | AC_DEFUN([GUILE_MODULE_REQUIRED_EXPORT], | |
223 | [GUILE_MODULE_EXPORTS(guile_module_required_export,$1,$2) | |
224 | if test "$guile_module_required_export" = "no" ; then | |
225 | AC_MSG_ERROR([module $1 does not export $2; required]) | |
226 | fi | |
227 | ]) | |
228 | ||
229 | ## guile.m4 ends here |