diff options
Diffstat (limited to 'meta/guile.m4')
| -rw-r--r-- | meta/guile.m4 | 171 |
1 files changed, 124 insertions, 47 deletions
diff --git a/meta/guile.m4 b/meta/guile.m4 index a7186fb84..a3e1ef1de 100644 --- a/meta/guile.m4 +++ b/meta/guile.m4 @@ -1,6 +1,6 @@ ## Autoconf macros for working with Guile. ## -## Copyright (C) 1998,2001, 2006, 2010 Free Software Foundation, Inc. +## Copyright (C) 1998,2001, 2006, 2010, 2012 Free Software Foundation, Inc. ## ## This library is free software; you can redistribute it and/or ## modify it under the terms of the GNU Lesser General Public License @@ -22,6 +22,7 @@ ## Index ## ----- ## +## GUILE_PKG -- find Guile development files ## GUILE_PROGS -- set paths to Guile interpreter, config and tool programs ## GUILE_FLAGS -- set flags for compiling and linking with Guile ## GUILE_SITE_DIR -- find path to Guile "site" directory @@ -38,53 +39,85 @@ ## NOTE: Comments preceding an AC_DEFUN (starting from "Usage:") are massaged ## into doc/ref/autoconf-macros.texi (see Makefile.am in that directory). -# GUILE_PROGS -- set paths to Guile interpreter, config and tool programs -# -# Usage: GUILE_PROGS -# -# This macro looks for programs @code{guile}, @code{guile-config} and -# @code{guile-tools}, and sets variables @var{GUILE}, @var{GUILE_CONFIG} and -# @var{GUILE_TOOLS}, to their paths, respectively. If either of the first two -# is not found, signal error. -# -# The variables are marked for substitution, as by @code{AC_SUBST}. -# -AC_DEFUN([GUILE_PROGS], - [AC_PATH_PROG(GUILE,guile) - if test "$GUILE" = "" ; then - AC_MSG_ERROR([guile required but not found]) +# GUILE_PKG -- find Guile development files +# +# Usage: GUILE_PKG([VERSIONS]) +# +# This macro runs the @code{pkg-config} tool to find development files +# for an available version of Guile. +# +# By default, this macro will search for the latest stable version of +# Guile (e.g. 2.0), falling back to the previous stable version +# (e.g. 1.8) if it is available. If no guile-@var{VERSION}.pc file is +# found, an error is signalled. The found version is stored in +# @var{GUILE_EFFECTIVE_VERSION}. +# +# If @code{GUILE_PROGS} was already invoked, this macro ensures that the +# development files have the same effective version as the Guile +# program. +# +# @var{GUILE_EFFECTIVE_VERSION} is marked for substitution, as by +# @code{AC_SUBST}. +# +AC_DEFUN([GUILE_PKG], + [PKG_PROG_PKG_CONFIG + _guile_versions_to_search="m4_default([$1], [2.0 1.8])" + if test -n "$GUILE_EFFECTIVE_VERSION"; then + _guile_tmp="" + for v in $_guile_versions_to_search; do + if test "$v" = "$GUILE_EFFECTIVE_VERSION"; then + _guile_tmp=$v + fi + done + if test -z "$_guile_tmp"; then + AC_MSG_FAILURE([searching for guile development files for versions $_guile_versions_to_search, but previously found $GUILE version $GUILE_EFFECTIVE_VERSION]) + fi + _guile_versions_to_search=$GUILE_EFFECTIVE_VERSION fi - AC_SUBST(GUILE) - AC_PATH_PROG(GUILE_CONFIG,guile-config) - if test "$GUILE_CONFIG" = "" ; then - AC_MSG_ERROR([guile-config required but not found]) + GUILE_EFFECTIVE_VERSION="" + _guile_errors="" + for v in $_guile_versions_to_search; do + AC_MSG_NOTICE([checking for guile $v]) + if test -z "$GUILE_EFFECTIVE_VERSION"; then + PKG_CHECK_EXISTS([guile-$v], [GUILE_EFFECTIVE_VERSION=$v], []) + fi + done + + if test -z "$GUILE_EFFECTIVE_VERSION"; then + AC_MSG_ERROR([ +No Guile development packages were found. + +Please verify that you have Guile installed. If you installed Guile +from a binary distribution, please verify that you have also installed +the development packages. If you installed it yourself, you might need +to adjust your PKG_CONFIG_PATH; see the pkg-config man page for more. +]) fi - AC_SUBST(GUILE_CONFIG) - AC_PATH_PROG(GUILE_TOOLS,guile-tools) - AC_SUBST(GUILE_TOOLS) + AC_MSG_NOTICE([found guile $v]) + AC_SUBST([GUILE_EFFECTIVE_VERSION]) ]) # GUILE_FLAGS -- set flags for compiling and linking with Guile # # Usage: GUILE_FLAGS # -# This macro runs the @code{guile-config} script, installed with Guile, to -# find out where Guile's header files and libraries are installed. It sets -# four variables, @var{GUILE_CFLAGS}, @var{GUILE_LDFLAGS}, @var{GUILE_LIBS}, -# and @var{GUILE_LTLIBS}. +# This macro runs the @code{pkg-config} tool to find out how to compile +# and link programs against Guile. It sets four variables: +# @var{GUILE_CFLAGS}, @var{GUILE_LDFLAGS}, @var{GUILE_LIBS}, and +# @var{GUILE_LTLIBS}. # # @var{GUILE_CFLAGS}: flags to pass to a C or C++ compiler to build code that # uses Guile header files. This is almost always just one or more @code{-I} # flags. # -# @var{GUILE_LDFLAGS}: flags to pass to the compiler to link a program against -# Guile. This includes @code{-lguile} for the Guile library itself, any -# libraries that Guile itself requires (like -lqthreads), and so on. It may -# also include one or more @code{-L} flag to tell the compiler where to find -# the libraries. But it does not include flags that influence the program's -# runtime search path for libraries, and will therefore lead to a program -# that fails to start, unless all necessary libraries are installed in a -# standard location such as @file{/usr/lib}. +# @var{GUILE_LDFLAGS}: flags to pass to the compiler to link a program +# against Guile. This includes @code{-lguile-@var{VERSION}} for the +# Guile library itself, and may also include one or more @code{-L} flag +# to tell the compiler where to find the libraries. But it does not +# include flags that influence the program's runtime search path for +# libraries, and will therefore lead to a program that fails to start, +# unless all necessary libraries are installed in a standard location +# such as @file{/usr/lib}. # # @var{GUILE_LIBS} and @var{GUILE_LTLIBS}: flags to pass to the compiler or to # libtool, respectively, to link a program against Guile. It includes flags @@ -97,16 +130,14 @@ AC_DEFUN([GUILE_PROGS], # The variables are marked for substitution, as by @code{AC_SUBST}. # AC_DEFUN([GUILE_FLAGS], - [dnl Find guile-config. - AC_REQUIRE([GUILE_PROGS])dnl + [AC_REQUIRE([GUILE_PKG]) + PKG_CHECK_MODULES(GUILE, [guile-$GUILE_EFFECTIVE_VERSION]) - AC_MSG_CHECKING([libguile compile flags]) - GUILE_CFLAGS="`$GUILE_CONFIG compile`" - AC_MSG_RESULT([$GUILE_CFLAGS]) + dnl GUILE_CFLAGS and GUILE_LIBS are already defined and AC_SUBST'd by + dnl PKG_CHECK_MODULES. But GUILE_LIBS to pkg-config is GUILE_LDFLAGS + dnl to us. - AC_MSG_CHECKING([libguile link flags]) - GUILE_LDFLAGS="`$GUILE_CONFIG link`" - AC_MSG_RESULT([$GUILE_LDFLAGS]) + GUILE_LDFLAGS=$GUILE_LIBS dnl Determine the platform dependent parameters needed to use rpath. dnl AC_LIB_LINKFLAGS_FROM_LIBS is defined in gnulib/m4/lib-link.m4 and needs @@ -116,6 +147,7 @@ AC_DEFUN([GUILE_FLAGS], AC_LIB_LINKFLAGS_FROM_LIBS([GUILE_LTLIBS], [$GUILE_LDFLAGS], [yes]) GUILE_LTLIBS="$GUILE_LDFLAGS $GUILE_LTLIBS" + AC_SUBST([GUILE_EFFECTIVE_VERSION]) AC_SUBST([GUILE_CFLAGS]) AC_SUBST([GUILE_LDFLAGS]) AC_SUBST([GUILE_LIBS]) @@ -133,16 +165,61 @@ AC_DEFUN([GUILE_FLAGS], # The variable is marked for substitution, as by @code{AC_SUBST}. # AC_DEFUN([GUILE_SITE_DIR], - [AC_REQUIRE([GUILE_PROGS])dnl + [AC_REQUIRE([GUILE_PKG]) AC_MSG_CHECKING(for Guile site directory) - GUILE_SITE=`[$GUILE_CONFIG] info sitedir` + GUILE_SITE=`$PKG_CONFIG --print-errors --variable=sitedir guile-$GUILE_EFFECTIVE_VERSION` + AC_MSG_RESULT($GUILE_SITE) if test "$GUILE_SITE" = ""; then - GUILE_SITE=`[$GUILE_CONFIG] info pkgdatadir`/site + AC_MSG_FAILURE(sitedir not found) fi - AC_MSG_RESULT($GUILE_SITE) AC_SUBST(GUILE_SITE) ]) +# GUILE_PROGS -- set paths to Guile interpreter, config and tool programs +# +# Usage: GUILE_PROGS +# +# This macro looks for programs @code{guile} and @code{guild}, setting +# variables @var{GUILE} and @var{GUILD} to their paths, respectively. +# If @code{guile} is not found, signal an error. +# +# The effective version of the found @code{guile} is set to +# @var{GUILE_EFFECTIVE_VERSION}. This macro ensures that the effective +# version is compatible with the result of a previous invocation of +# @code{GUILE_FLAGS}, if any. +# +# As a legacy interface, it also looks for @code{guile-config} and +# @code{guile-tools}, setting @var{GUILE_CONFIG} and @var{GUILE_TOOLS}. +# +# The variables are marked for substitution, as by @code{AC_SUBST}. +# +AC_DEFUN([GUILE_PROGS], + [AC_PATH_PROG(GUILE,guile) + if test "$GUILE" = "" ; then + AC_MSG_ERROR([guile required but not found]) + fi + AC_SUBST(GUILE) + + _guile_prog_version=`$GUILE -c "(display (effective-version))"` + if test -z "$GUILE_EFFECTIVE_VERSION"; then + GUILE_EFFECTIVE_VERSION=$_guile_prog_version + elif test "$GUILE_EFFECTIVE_VERSION" != "$_guile_prog_version"; then + AC_MSG_ERROR([found development files for Guile $GUILE_EFFECTIVE_VERSION, but $GUILE has effective version $_guile_prog_version]) + fi + + AC_PATH_PROG(GUILD,guild) + AC_SUBST(GUILD) + + AC_PATH_PROG(GUILE_CONFIG,guile-config) + AC_SUBST(GUILE_CONFIG) + if test -n "$GUILD"; then + GUILE_TOOLS=$GUILD + else + AC_PATH_PROG(GUILE_TOOLS,guile-tools) + fi + AC_SUBST(GUILE_TOOLS) + ]) + # GUILE_CHECK -- evaluate Guile Scheme code and capture the return value # # Usage: GUILE_CHECK_RETVAL(var,check) |