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## Autoconf macros for working with Guile.
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## Copyright (C) 1998,2001, 2006 Free Software Foundation, Inc.
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## This library is free software; you can redistribute it and/or
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## modify it under the terms of the GNU Lesser General Public
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## License as published by the Free Software Foundation; either
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## version 2.1 of the License, or (at your option) any later version.
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## This library is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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## Lesser General Public License for more details.
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## You should have received a copy of the GNU Lesser General Public
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## License along with this library; if not, write to the Free Software
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## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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## GUILE_PROGS -- set paths to Guile interpreter, config and tool programs
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## GUILE_FLAGS -- set flags for compiling and linking with Guile
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## GUILE_SITE_DIR -- find path to Guile "site" directory
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## GUILE_CHECK -- evaluate Guile Scheme code and capture the return value
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## GUILE_MODULE_CHECK -- check feature of a Guile Scheme module
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## GUILE_MODULE_AVAILABLE -- check availability of a Guile Scheme module
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## GUILE_MODULE_REQUIRED -- fail if a Guile Scheme module is unavailable
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## GUILE_MODULE_EXPORTS -- check if a module exports a variable
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## GUILE_MODULE_REQUIRED_EXPORT -- fail if a module doesn't export a variable
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## NOTE: Comments preceding an AC_DEFUN (starting from "Usage:") are massaged
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## into doc/ref/autoconf-macros.texi (see Makefile.am in that directory).
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# GUILE_PROGS -- set paths to Guile interpreter, config and tool programs
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# This macro looks for programs @code{guile}, @code{guile-config} and
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# @code{guile-tools}, and sets variables @var{GUILE}, @var{GUILE_CONFIG} and
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# @var{GUILE_TOOLS}, to their paths, respectively. If either of the first two
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# is not found, signal error.
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# The variables are marked for substitution, as by @code{AC_SUBST}.
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AC_DEFUN([GUILE_PROGS],
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[AC_PATH_PROG(GUILE,guile)
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if test "$GUILE" = "" ; then
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AC_MSG_ERROR([guile required but not found])
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AC_PATH_PROG(GUILE_CONFIG,guile-config)
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if test "$GUILE_CONFIG" = "" ; then
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AC_MSG_ERROR([guile-config required but not found])
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AC_SUBST(GUILE_CONFIG)
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AC_PATH_PROG(GUILE_TOOLS,guile-tools)
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# GUILE_FLAGS -- set flags for compiling and linking with Guile
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# This macro runs the @code{guile-config} script, installed with Guile, to
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# find out where Guile's header files and libraries are installed. It sets
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# two variables, @var{GUILE_CFLAGS} and @var{GUILE_LDFLAGS}.
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# @var{GUILE_CFLAGS}: flags to pass to a C or C++ compiler to build code that
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# uses Guile header files. This is almost always just a @code{-I} flag.
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# @var{GUILE_LDFLAGS}: flags to pass to the linker to link a program against
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# Guile. This includes @code{-lguile} for the Guile library itself, any
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# libraries that Guile itself requires (like -lqthreads), and so on. It may
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# also include a @code{-L} flag to tell the compiler where to find the
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# The variables are marked for substitution, as by @code{AC_SUBST}.
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AC_DEFUN([GUILE_FLAGS],
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[AC_REQUIRE([GUILE_PROGS])dnl
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AC_MSG_CHECKING([libguile compile flags])
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GUILE_CFLAGS="`$GUILE_CONFIG compile`"
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AC_MSG_RESULT([$GUILE_CFLAGS])
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AC_MSG_CHECKING([libguile link flags])
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GUILE_LDFLAGS="`$GUILE_CONFIG link`"
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AC_MSG_RESULT([$GUILE_LDFLAGS])
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AC_SUBST(GUILE_CFLAGS)
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AC_SUBST(GUILE_LDFLAGS)
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# GUILE_SITE_DIR -- find path to Guile "site" directory
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# Usage: GUILE_SITE_DIR
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# This looks for Guile's "site" directory, usually something like
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# PREFIX/share/guile/site, and sets var @var{GUILE_SITE} to the path.
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# Note that the var name is different from the macro name.
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# The variable is marked for substitution, as by @code{AC_SUBST}.
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AC_DEFUN([GUILE_SITE_DIR],
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[AC_REQUIRE([GUILE_PROGS])dnl
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AC_MSG_CHECKING(for Guile site directory)
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GUILE_SITE=`[$GUILE_CONFIG] info pkgdatadir`/site
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AC_MSG_RESULT($GUILE_SITE)
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# GUILE_CHECK -- evaluate Guile Scheme code and capture the return value
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# Usage: GUILE_CHECK_RETVAL(var,check)
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# @var{var} is a shell variable name to be set to the return value.
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# @var{check} is a Guile Scheme expression, evaluated with "$GUILE -c", and
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# returning either 0 or non-#f to indicate the check passed.
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# Non-0 number or #f indicates failure.
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# Avoid using the character "#" since that confuses autoconf.
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AC_DEFUN([GUILE_CHECK],
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[AC_REQUIRE([GUILE_PROGS])
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$GUILE -c "$2" > /dev/null 2>&1
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# GUILE_MODULE_CHECK -- check feature of a Guile Scheme module
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# Usage: GUILE_MODULE_CHECK(var,module,featuretest,description)
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# @var{var} is a shell variable name to be set to "yes" or "no".
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# @var{module} is a list of symbols, like: (ice-9 common-list).
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# @var{featuretest} is an expression acceptable to GUILE_CHECK, q.v.
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# @var{description} is a present-tense verb phrase (passed to AC_MSG_CHECKING).
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AC_DEFUN([GUILE_MODULE_CHECK],
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[AC_MSG_CHECKING([if $2 $4])
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GUILE_CHECK($1,(use-modules $2) (exit ((lambda () $3))))
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if test "$$1" = "0" ; then $1=yes ; else $1=no ; fi
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# GUILE_MODULE_AVAILABLE -- check availability of a Guile Scheme module
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# Usage: GUILE_MODULE_AVAILABLE(var,module)
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# @var{var} is a shell variable name to be set to "yes" or "no".
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# @var{module} is a list of symbols, like: (ice-9 common-list).
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AC_DEFUN([GUILE_MODULE_AVAILABLE],
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[GUILE_MODULE_CHECK($1,$2,0,is available)
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# GUILE_MODULE_REQUIRED -- fail if a Guile Scheme module is unavailable
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# Usage: GUILE_MODULE_REQUIRED(symlist)
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# @var{symlist} is a list of symbols, WITHOUT surrounding parens,
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# like: ice-9 common-list.
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AC_DEFUN([GUILE_MODULE_REQUIRED],
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[GUILE_MODULE_AVAILABLE(ac_guile_module_required, ($1))
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if test "$ac_guile_module_required" = "no" ; then
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AC_MSG_ERROR([required guile module not found: ($1)])
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# GUILE_MODULE_EXPORTS -- check if a module exports a variable
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# Usage: GUILE_MODULE_EXPORTS(var,module,modvar)
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# @var{var} is a shell variable to be set to "yes" or "no".
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# @var{module} is a list of symbols, like: (ice-9 common-list).
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# @var{modvar} is the Guile Scheme variable to check.
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AC_DEFUN([GUILE_MODULE_EXPORTS],
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[GUILE_MODULE_CHECK($1,$2,$3,exports `$3')
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# GUILE_MODULE_REQUIRED_EXPORT -- fail if a module doesn't export a variable
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# Usage: GUILE_MODULE_REQUIRED_EXPORT(module,modvar)
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# @var{module} is a list of symbols, like: (ice-9 common-list).
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# @var{modvar} is the Guile Scheme variable to check.
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AC_DEFUN([GUILE_MODULE_REQUIRED_EXPORT],
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[GUILE_MODULE_EXPORTS(guile_module_required_export,$1,$2)
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if test "$guile_module_required_export" = "no" ; then
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AC_MSG_ERROR([module $1 does not export $2; required])
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## guile.m4 ends here
added
removed
m4/guile.m4
