1 ## Autoconf macros for working with Guile.
3 ## Copyright (C) 1998,2001, 2006, 2010, 2012, 2013 Free Software Foundation, Inc.
5 ## This library is free software; you can redistribute it and/or
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.
10 ## This library 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 GNU
13 ## Lesser General Public License for more details.
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
17 ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 ## GUILE_PKG -- find Guile development files
26 ## GUILE_PROGS -- set paths to Guile interpreter, config and tool programs
27 ## GUILE_FLAGS -- set flags for compiling and linking with Guile
28 ## GUILE_SITE_DIR -- find path to Guile "site" directory
29 ## GUILE_CHECK -- evaluate Guile Scheme code and capture the return value
30 ## GUILE_MODULE_CHECK -- check feature of a Guile Scheme module
31 ## GUILE_MODULE_AVAILABLE -- check availability of a Guile Scheme module
32 ## GUILE_MODULE_REQUIRED -- fail if a Guile Scheme module is unavailable
33 ## GUILE_MODULE_EXPORTS -- check if a module exports a variable
34 ## GUILE_MODULE_REQUIRED_EXPORT -- fail if a module doesn't export a variable
39 ## NOTE: Comments preceding an AC_DEFUN (starting from "Usage:") are massaged
40 ## into doc/ref/autoconf-macros.texi (see Makefile.am in that directory).
42 # GUILE_PKG -- find Guile development files
44 # Usage: GUILE_PKG([VERSIONS])
46 # This macro runs the @code{pkg-config} tool to find development files
47 # for an available version of Guile.
49 # By default, this macro will search for the latest stable version of
50 # Guile (e.g. 2.0), falling back to the previous stable version
51 # (e.g. 1.8) if it is available. If no guile-@var{VERSION}.pc file is
52 # found, an error is signalled. The found version is stored in
53 # @var{GUILE_EFFECTIVE_VERSION}.
55 # If @code{GUILE_PROGS} was already invoked, this macro ensures that the
56 # development files have the same effective version as the Guile
59 # @var{GUILE_EFFECTIVE_VERSION} is marked for substitution, as by
64 _guile_versions_to_search="m4_default([$1], [2.0 1.8])"
65 if test -n "$GUILE_EFFECTIVE_VERSION"; then
67 for v in $_guile_versions_to_search; do
68 if test "$v" = "$GUILE_EFFECTIVE_VERSION"; then
72 if test -z "$_guile_tmp"; then
73 AC_MSG_FAILURE([searching for guile development files for versions $_guile_versions_to_search, but previously found $GUILE version $GUILE_EFFECTIVE_VERSION])
75 _guile_versions_to_search=$GUILE_EFFECTIVE_VERSION
77 GUILE_EFFECTIVE_VERSION=""
79 for v in $_guile_versions_to_search; do
80 AC_MSG_NOTICE([checking for guile $v])
81 if test -z "$GUILE_EFFECTIVE_VERSION"; then
82 PKG_CHECK_EXISTS([guile-$v], [GUILE_EFFECTIVE_VERSION=$v], [])
86 if test -z "$GUILE_EFFECTIVE_VERSION"; then
88 No Guile development packages were found.
90 Please verify that you have Guile installed. If you installed Guile
91 from a binary distribution, please verify that you have also installed
92 the development packages. If you installed it yourself, you might need
93 to adjust your PKG_CONFIG_PATH; see the pkg-config man page for more.
96 AC_MSG_NOTICE([found guile $v])
97 AC_SUBST([GUILE_EFFECTIVE_VERSION])
100 # GUILE_FLAGS -- set flags for compiling and linking with Guile
104 # This macro runs the @code{pkg-config} tool to find out how to compile
105 # and link programs against Guile. It sets four variables:
106 # @var{GUILE_CFLAGS}, @var{GUILE_LDFLAGS}, @var{GUILE_LIBS}, and
107 # @var{GUILE_LTLIBS}.
109 # @var{GUILE_CFLAGS}: flags to pass to a C or C++ compiler to build code that
110 # uses Guile header files. This is almost always just one or more @code{-I}
113 # @var{GUILE_LDFLAGS}: flags to pass to the compiler to link a program
114 # against Guile. This includes @code{-lguile-@var{VERSION}} for the
115 # Guile library itself, and may also include one or more @code{-L} flag
116 # to tell the compiler where to find the libraries. But it does not
117 # include flags that influence the program's runtime search path for
118 # libraries, and will therefore lead to a program that fails to start,
119 # unless all necessary libraries are installed in a standard location
120 # such as @file{/usr/lib}.
122 # @var{GUILE_LIBS} and @var{GUILE_LTLIBS}: flags to pass to the compiler or to
123 # libtool, respectively, to link a program against Guile. It includes flags
124 # that augment the program's runtime search path for libraries, so that shared
125 # libraries will be found at the location where they were during linking, even
126 # in non-standard locations. @var{GUILE_LIBS} is to be used when linking the
127 # program directly with the compiler, whereas @var{GUILE_LTLIBS} is to be used
128 # when linking the program is done through libtool.
130 # The variables are marked for substitution, as by @code{AC_SUBST}.
132 AC_DEFUN([GUILE_FLAGS],
133 [AC_REQUIRE([GUILE_PKG])
134 PKG_CHECK_MODULES(GUILE, [guile-$GUILE_EFFECTIVE_VERSION])
136 dnl GUILE_CFLAGS and GUILE_LIBS are already defined and AC_SUBST'd by
137 dnl PKG_CHECK_MODULES. But GUILE_LIBS to pkg-config is GUILE_LDFLAGS
140 GUILE_LDFLAGS=$GUILE_LIBS
142 dnl Determine the platform dependent parameters needed to use rpath.
143 dnl AC_LIB_LINKFLAGS_FROM_LIBS is defined in gnulib/m4/lib-link.m4 and needs
144 dnl the file gnulib/build-aux/config.rpath.
145 AC_LIB_LINKFLAGS_FROM_LIBS([GUILE_LIBS], [$GUILE_LDFLAGS], [])
146 GUILE_LIBS="$GUILE_LDFLAGS $GUILE_LIBS"
147 AC_LIB_LINKFLAGS_FROM_LIBS([GUILE_LTLIBS], [$GUILE_LDFLAGS], [yes])
148 GUILE_LTLIBS="$GUILE_LDFLAGS $GUILE_LTLIBS"
150 AC_SUBST([GUILE_EFFECTIVE_VERSION])
151 AC_SUBST([GUILE_CFLAGS])
152 AC_SUBST([GUILE_LDFLAGS])
153 AC_SUBST([GUILE_LIBS])
154 AC_SUBST([GUILE_LTLIBS])
157 # GUILE_SITE_DIR -- find path to Guile "site" directory
159 # Usage: GUILE_SITE_DIR
161 # This looks for Guile's "site" directory, usually something like
162 # PREFIX/share/guile/site, and sets var @var{GUILE_SITE} to the path.
163 # Note that the var name is different from the macro name.
165 # The variable is marked for substitution, as by @code{AC_SUBST}.
167 AC_DEFUN([GUILE_SITE_DIR],
168 [AC_REQUIRE([GUILE_PKG])
169 AC_MSG_CHECKING(for Guile site directory)
170 GUILE_SITE=`$PKG_CONFIG --print-errors --variable=sitedir guile-$GUILE_EFFECTIVE_VERSION`
171 AC_MSG_RESULT($GUILE_SITE)
172 if test "$GUILE_SITE" = ""; then
173 AC_MSG_FAILURE(sitedir not found)
178 # GUILE_PROGS -- set paths to Guile interpreter, config and tool programs
180 # Usage: GUILE_PROGS([VERSION])
182 # This macro looks for programs @code{guile} and @code{guild}, setting
183 # variables @var{GUILE} and @var{GUILD} to their paths, respectively.
184 # If @code{guile} is not found, signal an error.
186 # By default, this macro will search for the latest stable version of
187 # Guile (e.g. 2.0). x.y or x.y.z versions can be specified. If an older
188 # version is found, the macro will signal an error.
190 # The effective version of the found @code{guile} is set to
191 # @var{GUILE_EFFECTIVE_VERSION}. This macro ensures that the effective
192 # version is compatible with the result of a previous invocation of
193 # @code{GUILE_FLAGS}, if any.
195 # As a legacy interface, it also looks for @code{guile-config} and
196 # @code{guile-tools}, setting @var{GUILE_CONFIG} and @var{GUILE_TOOLS}.
198 # The variables are marked for substitution, as by @code{AC_SUBST}.
200 AC_DEFUN([GUILE_PROGS],
201 [AC_PATH_PROG(GUILE,guile)
202 _guile_required_version="m4_default([$1], [2.0])"
203 if test "$GUILE" = "" ; then
204 AC_MSG_ERROR([guile required but not found])
208 _guile_effective_version=`$GUILE -c "(display (effective-version))"`
209 if test -z "$GUILE_EFFECTIVE_VERSION"; then
210 GUILE_EFFECTIVE_VERSION=$_guile_effective_version
211 elif test "$GUILE_EFFECTIVE_VERSION" != "$_guile_effective_version"; then
212 AC_MSG_ERROR([found development files for Guile $GUILE_EFFECTIVE_VERSION, but $GUILE has effective version $_guile_effective_version])
215 _guile_major_version=`$GUILE -c "(display (major-version))"`
216 _guile_minor_version=`$GUILE -c "(display (minor-version))"`
217 _guile_micro_version=`$GUILE -c "(display (micro-version))"`
218 _guile_prog_version="$_guile_major_version.$_guile_minor_version.$_guile_micro_version"
220 AC_MSG_CHECKING([for Guile version >= $_guile_required_version])
221 _major_version=`echo $_guile_required_version | cut -d . -f 1`
222 _minor_version=`echo $_guile_required_version | cut -d . -f 2`
223 _micro_version=`echo $_guile_required_version | cut -d . -f 3`
224 if test "$_guile_major_version" -ge "$_major_version"; then
225 if test "$_guile_minor_version" -ge "$_minor_version"; then
226 if test -n "$_micro_version"; then
227 if test "$_guile_micro_version" -lt "$_micro_version"; then
228 AC_MSG_ERROR([Guile $_guile_required_version required, but $_guile_prog_version found])
232 AC_MSG_ERROR([Guile $_guile_required_version required, but $_guile_prog_version found])
235 AC_MSG_ERROR([Guile $_guile_required_version required, but $_guile_prog_version found])
237 AC_MSG_RESULT([$_guile_prog_version])
239 AC_PATH_PROG(GUILD,guild)
242 AC_PATH_PROG(GUILE_CONFIG,guile-config)
243 AC_SUBST(GUILE_CONFIG)
244 if test -n "$GUILD"; then
247 AC_PATH_PROG(GUILE_TOOLS,guile-tools)
249 AC_SUBST(GUILE_TOOLS)
252 # GUILE_CHECK -- evaluate Guile Scheme code and capture the return value
254 # Usage: GUILE_CHECK_RETVAL(var,check)
256 # @var{var} is a shell variable name to be set to the return value.
257 # @var{check} is a Guile Scheme expression, evaluated with "$GUILE -c", and
258 # returning either 0 or non-#f to indicate the check passed.
259 # Non-0 number or #f indicates failure.
260 # Avoid using the character "#" since that confuses autoconf.
262 AC_DEFUN([GUILE_CHECK],
263 [AC_REQUIRE([GUILE_PROGS])
264 $GUILE -c "$2" > /dev/null 2>&1
268 # GUILE_MODULE_CHECK -- check feature of a Guile Scheme module
270 # Usage: GUILE_MODULE_CHECK(var,module,featuretest,description)
272 # @var{var} is a shell variable name to be set to "yes" or "no".
273 # @var{module} is a list of symbols, like: (ice-9 common-list).
274 # @var{featuretest} is an expression acceptable to GUILE_CHECK, q.v.
275 # @var{description} is a present-tense verb phrase (passed to AC_MSG_CHECKING).
277 AC_DEFUN([GUILE_MODULE_CHECK],
278 [AC_MSG_CHECKING([if $2 $4])
279 GUILE_CHECK($1,(use-modules $2) (exit ((lambda () $3))))
280 if test "$$1" = "0" ; then $1=yes ; else $1=no ; fi
284 # GUILE_MODULE_AVAILABLE -- check availability of a Guile Scheme module
286 # Usage: GUILE_MODULE_AVAILABLE(var,module)
288 # @var{var} is a shell variable name to be set to "yes" or "no".
289 # @var{module} is a list of symbols, like: (ice-9 common-list).
291 AC_DEFUN([GUILE_MODULE_AVAILABLE],
292 [GUILE_MODULE_CHECK($1,$2,0,is available)
295 # GUILE_MODULE_REQUIRED -- fail if a Guile Scheme module is unavailable
297 # Usage: GUILE_MODULE_REQUIRED(symlist)
299 # @var{symlist} is a list of symbols, WITHOUT surrounding parens,
300 # like: ice-9 common-list.
302 AC_DEFUN([GUILE_MODULE_REQUIRED],
303 [GUILE_MODULE_AVAILABLE(ac_guile_module_required, ($1))
304 if test "$ac_guile_module_required" = "no" ; then
305 AC_MSG_ERROR([required guile module not found: ($1)])
309 # GUILE_MODULE_EXPORTS -- check if a module exports a variable
311 # Usage: GUILE_MODULE_EXPORTS(var,module,modvar)
313 # @var{var} is a shell variable to be set to "yes" or "no".
314 # @var{module} is a list of symbols, like: (ice-9 common-list).
315 # @var{modvar} is the Guile Scheme variable to check.
317 AC_DEFUN([GUILE_MODULE_EXPORTS],
318 [GUILE_MODULE_CHECK($1,$2,$3,exports `$3')
321 # GUILE_MODULE_REQUIRED_EXPORT -- fail if a module doesn't export a variable
323 # Usage: GUILE_MODULE_REQUIRED_EXPORT(module,modvar)
325 # @var{module} is a list of symbols, like: (ice-9 common-list).
326 # @var{modvar} is the Guile Scheme variable to check.
328 AC_DEFUN([GUILE_MODULE_REQUIRED_EXPORT],
329 [GUILE_MODULE_EXPORTS(guile_module_required_export,$1,$2)
330 if test "$guile_module_required_export" = "no" ; then
331 AC_MSG_ERROR([module $1 does not export $2; required])
335 ## guile.m4 ends here