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guile.m4 allows selection of guile 2.0, 1.8, etc.
* meta/guile.m4 (GUILE_PKG): New macro, chooses a version of Guile against which to compile. (GUILE_FLAGS, GUILE_PROGS): Rewrite to call GUILE_PKG as necessary, to respect any previous call to GUILE_PKG, and to not require guile-tools.
This commit is contained in:
Andy Wingo
parent
988ca6b212
commit
ccd0ae1fbb
1 changed files with 121 additions and 44 deletions
165
meta/guile.m4
165
meta/guile.m4
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@ -1,6 +1,6 @@
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## Autoconf macros for working with Guile.
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##
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## Copyright (C) 1998,2001, 2006, 2010 Free Software Foundation, Inc.
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## Copyright (C) 1998,2001, 2006, 2010, 2012 Free Software Foundation, Inc.
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##
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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 License
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@ -22,6 +22,7 @@
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## Index
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## -----
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##
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## GUILE_PKG -- find Guile development files
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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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@ -38,53 +39,85 @@
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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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# GUILE_PKG -- find Guile development files
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#
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# Usage: GUILE_PROGS
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# Usage: GUILE_PKG([VERSIONS])
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#
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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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# This macro runs the @code{pkg-config} tool to find development files
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# for an available version of Guile.
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#
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# The variables are marked for substitution, as by @code{AC_SUBST}.
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# By default, this macro will search for the latest stable version of
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# Guile (e.g. 2.0), falling back to the previous stable version
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# (e.g. 1.8) if it is available. If no guile-@var{VERSION}.pc file is
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# found, an error is signalled. The found version is stored in
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# @var{GUILE_EFFECTIVE_VERSION}.
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#
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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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# If @code{GUILE_PROGS} was already invoked, this macro ensures that the
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# development files have the same effective version as the Guile
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# program.
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#
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# @var{GUILE_EFFECTIVE_VERSION} is marked for substitution, as by
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# @code{AC_SUBST}.
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#
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AC_DEFUN([GUILE_PKG],
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[PKG_PROG_PKG_CONFIG
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_guile_versions_to_search="m4_default([$1], [2.0 1.8])"
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if test -n "$GUILE_EFFECTIVE_VERSION"; then
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_guile_tmp=""
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for v in $_guile_versions_to_search; do
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if test "$v" = "$GUILE_EFFECTIVE_VERSION"; then
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_guile_tmp=$v
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fi
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done
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if test -z "$_guile_tmp"; then
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AC_MSG_FAILURE([searching for guile development files for versions $_guile_versions_to_search, but previously found $GUILE version $GUILE_EFFECTIVE_VERSION])
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fi
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_guile_versions_to_search=$GUILE_EFFECTIVE_VERSION
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fi
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AC_SUBST(GUILE)
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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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GUILE_EFFECTIVE_VERSION=""
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_guile_errors=""
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for v in $_guile_versions_to_search; do
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AC_MSG_NOTICE([checking for guile $v])
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if test -z "$GUILE_EFFECTIVE_VERSION"; then
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PKG_CHECK_EXISTS([guile-$v], [GUILE_EFFECTIVE_VERSION=$v], [])
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fi
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done
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if test -z "$GUILE_EFFECTIVE_VERSION"; then
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AC_MSG_ERROR([
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No Guile development packages were found.
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Please verify that you have Guile installed. If you installed Guile
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from a binary distribution, please verify that you have also installed
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the development packages. If you installed it yourself, you might need
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to adjust your PKG_CONFIG_PATH; see the pkg-config man page for more.
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])
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fi
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AC_SUBST(GUILE_CONFIG)
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AC_PATH_PROG(GUILE_TOOLS,guile-tools)
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AC_SUBST(GUILE_TOOLS)
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AC_MSG_NOTICE([found guile $v])
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AC_SUBST([GUILE_EFFECTIVE_VERSION])
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])
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# GUILE_FLAGS -- set flags for compiling and linking with Guile
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#
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# Usage: GUILE_FLAGS
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#
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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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# four variables, @var{GUILE_CFLAGS}, @var{GUILE_LDFLAGS}, @var{GUILE_LIBS},
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# and @var{GUILE_LTLIBS}.
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# This macro runs the @code{pkg-config} tool to find out how to compile
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# and link programs against Guile. It sets four variables:
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# @var{GUILE_CFLAGS}, @var{GUILE_LDFLAGS}, @var{GUILE_LIBS}, and
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# @var{GUILE_LTLIBS}.
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#
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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 one or more @code{-I}
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# flags.
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#
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# @var{GUILE_LDFLAGS}: flags to pass to the compiler 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 one or more @code{-L} flag to tell the compiler where to find
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# the libraries. But it does not include flags that influence the program's
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# runtime search path for libraries, and will therefore lead to a program
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# that fails to start, unless all necessary libraries are installed in a
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# standard location such as @file{/usr/lib}.
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# @var{GUILE_LDFLAGS}: flags to pass to the compiler to link a program
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# against Guile. This includes @code{-lguile-@var{VERSION}} for the
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# Guile library itself, and may also include one or more @code{-L} flag
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# to tell the compiler where to find the libraries. But it does not
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# include flags that influence the program's runtime search path for
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# libraries, and will therefore lead to a program that fails to start,
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# unless all necessary libraries are installed in a standard location
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# such as @file{/usr/lib}.
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#
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# @var{GUILE_LIBS} and @var{GUILE_LTLIBS}: flags to pass to the compiler or to
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# libtool, respectively, to link a program against Guile. It includes flags
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@ -97,16 +130,14 @@ AC_DEFUN([GUILE_PROGS],
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# The variables are marked for substitution, as by @code{AC_SUBST}.
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#
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AC_DEFUN([GUILE_FLAGS],
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[dnl Find guile-config.
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AC_REQUIRE([GUILE_PROGS])dnl
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[AC_REQUIRE([GUILE_PKG])
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PKG_CHECK_MODULES(GUILE, [guile-$GUILE_EFFECTIVE_VERSION])
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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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dnl GUILE_CFLAGS and GUILE_LIBS are already defined and AC_SUBST'd by
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dnl PKG_CHECK_MODULES. But GUILE_LIBS to pkg-config is GUILE_LDFLAGS
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dnl to us.
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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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GUILE_LDFLAGS=$GUILE_LIBS
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dnl Determine the platform dependent parameters needed to use rpath.
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dnl AC_LIB_LINKFLAGS_FROM_LIBS is defined in gnulib/m4/lib-link.m4 and needs
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@ -116,6 +147,7 @@ AC_DEFUN([GUILE_FLAGS],
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AC_LIB_LINKFLAGS_FROM_LIBS([GUILE_LTLIBS], [$GUILE_LDFLAGS], [yes])
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GUILE_LTLIBS="$GUILE_LDFLAGS $GUILE_LTLIBS"
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AC_SUBST([GUILE_EFFECTIVE_VERSION])
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AC_SUBST([GUILE_CFLAGS])
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AC_SUBST([GUILE_LDFLAGS])
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AC_SUBST([GUILE_LIBS])
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@ -133,16 +165,61 @@ AC_DEFUN([GUILE_FLAGS],
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# The variable is marked for substitution, as by @code{AC_SUBST}.
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#
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AC_DEFUN([GUILE_SITE_DIR],
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[AC_REQUIRE([GUILE_PROGS])dnl
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[AC_REQUIRE([GUILE_PKG])
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AC_MSG_CHECKING(for Guile site directory)
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GUILE_SITE=`[$GUILE_CONFIG] info sitedir`
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if test "$GUILE_SITE" = ""; then
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GUILE_SITE=`[$GUILE_CONFIG] info pkgdatadir`/site
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fi
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GUILE_SITE=`$PKG_CONFIG --print-errors --variable=sitedir guile-$GUILE_EFFECTIVE_VERSION`
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AC_MSG_RESULT($GUILE_SITE)
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if test "$GUILE_SITE" = ""; then
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AC_MSG_FAILURE(sitedir not found)
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fi
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AC_SUBST(GUILE_SITE)
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])
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# GUILE_PROGS -- set paths to Guile interpreter, config and tool programs
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#
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# Usage: GUILE_PROGS
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#
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# This macro looks for programs @code{guile} and @code{guild}, setting
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# variables @var{GUILE} and @var{GUILD} to their paths, respectively.
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# If @code{guile} is not found, signal an error.
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#
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# The effective version of the found @code{guile} is set to
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# @var{GUILE_EFFECTIVE_VERSION}. This macro ensures that the effective
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# version is compatible with the result of a previous invocation of
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# @code{GUILE_FLAGS}, if any.
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#
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# As a legacy interface, it also looks for @code{guile-config} and
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# @code{guile-tools}, setting @var{GUILE_CONFIG} and @var{GUILE_TOOLS}.
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#
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# The variables are marked for substitution, as by @code{AC_SUBST}.
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#
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AC_DEFUN([GUILE_PROGS],
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[AC_PATH_PROG(GUILE,guile)
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if test "$GUILE" = "" ; then
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AC_MSG_ERROR([guile required but not found])
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fi
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AC_SUBST(GUILE)
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_guile_prog_version=`$GUILE -c "(display (effective-version))"`
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if test -z "$GUILE_EFFECTIVE_VERSION"; then
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GUILE_EFFECTIVE_VERSION=$_guile_prog_version
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elif test "$GUILE_EFFECTIVE_VERSION" != "$_guile_prog_version"; then
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AC_MSG_ERROR([found development files for Guile $GUILE_EFFECTIVE_VERSION, but $GUILE has effective version $_guile_prog_version])
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fi
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AC_PATH_PROG(GUILD,guild)
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AC_SUBST(GUILD)
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AC_PATH_PROG(GUILE_CONFIG,guile-config)
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AC_SUBST(GUILE_CONFIG)
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if test -n "$GUILD"; then
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GUILE_TOOLS=$GUILD
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else
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AC_PATH_PROG(GUILE_TOOLS,guile-tools)
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fi
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AC_SUBST(GUILE_TOOLS)
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])
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# GUILE_CHECK -- evaluate Guile Scheme code and capture the return value
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#
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# Usage: GUILE_CHECK_RETVAL(var,check)
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