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# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_ruby_ext.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_RUBY_EXT
#
# DESCRIPTION
#
# Fetches the linker flags and C compiler flags for compiling and linking
# Ruby binary extensions. The macro substitutes RUBY_VERSION,
# RUBY_EXT_INC, RUBY_EXT_LIB, RUBY_EXT_CPPFLAGS, RUBY_EXT_LDFLAGS and
# RUBY_EXT_DLEXT variables if Ruby executable has been found. It also
# checks the same variables before trying to retrieve them from the Ruby
# configuration.
#
# RUBY_VERSION: version of the Ruby interpreter
# RUBY_EXT_INC: Ruby include directory
# RUBY_EXT_LIB: Ruby extensions destination directory
# RUBY_EXT_CPPFLAGS: C preprocessor flags to compile extensions
# RUBY_EXT_LDFLAGS: linker flags to build extensions
# RUBY_EXT_DLEXT: extensions suffix for ruby modules (e.g. "so")
#
# Examples:
#
# AX_RUBY_EXT
# if test x"$RUBY" = x; then
# AC_ERROR(["cannot find Ruby"])
# fi
#
# LICENSE
#
# Copyright (c) 2011 Stanislav Sedov <stas@FreeBSD.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright
#
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
#
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.
#serial 1
AC_DEFUN([AX_RUBY_EXT],[
#
# Check if ruby executable exists.
#
AC_PATH_PROGS(RUBY, ["${RUBY-ruby}"], [])
if test -n "$RUBY" ; then
AC_MSG_NOTICE([Ruby executable: '$RUBY'])
#
# Check Ruby version.
#
AC_MSG_CHECKING([for Ruby version])
[RUBY_VERSION=`$RUBY -e 'puts RUBY_VERSION'`];
AC_MSG_RESULT([$RUBY_VERSION])
AC_SUBST(RUBY_VERSION)
#
# Check for Ruby extensions compiler
#
AC_ARG_VAR(RUBY_EXT_CC, [Compiler for ruby extensions])
AC_MSG_CHECKING([for Ruby extensions compiler])
if test -z "$RUBY_EXT_CC" ; then
[RUBY_EXT_CC=`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG["CC"]'`];
fi
AC_MSG_RESULT([$RUBY_EXT_CC])
AC_SUBST(RUBY_EXT_CC)
#
# Check for Ruby extensions include path.
#
AC_ARG_VAR(RUBY_EXT_INC, [Directory to include ruby headers from])
AC_MSG_CHECKING([for Ruby headers include path])
if test -z "$RUBY_EXT_INC" ; then
[RUBY_EXT_INC=-I`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG["rubyhdrdir"]'`];
[RUBY_EXT_INC_EXTRA=" -I`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG["rubyarchhdrdir"]'`"];
if test "$RUBY_EXT_INC_EXTRA" != " -I" ; then
RUBY_EXT_INC+=$RUBY_EXT_INC_EXTRA
else
[RUBY_EXT_INC+=" -I`$RUBY -rrbconfig -e 'printf("%s/%s",RbConfig::CONFIG["rubyhdrdir"],RbConfig::CONFIG["arch"])'`"]
fi
if test "$RUBY_EXT_INC" = "-Inil -Inil" ; then
[RUBY_EXT_INC=-I`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG["archdir"]'`];
fi
fi
AC_MSG_RESULT([$RUBY_EXT_INC])
AC_SUBST(RUBY_EXT_INC)
#
# Check for the extensions target directory.
#
AC_ARG_VAR(RUBY_EXT_LIB, [Directory to install ruby extensions into])
AC_MSG_CHECKING([for Ruby extensions target directory])
if test -z "$RUBY_EXT_LIB" ; then
[RUBY_EXT_LIB=`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG["vendorarchdir"]'`];
fi
AC_MSG_RESULT([$RUBY_EXT_LIB])
AC_SUBST(RUBY_EXT_LIB)
#
# Check for Ruby CPP flags.
#
AC_ARG_VAR(RUBY_EXT_CPPFLAGS, [CPPFLAGS to compile Ruby extensions])
AC_MSG_CHECKING([for Ruby extensions C preprocessor flags])
if test -z "$RUBY_EXT_CPPFLAGS" ; then
[RUBY_EXT_CPPFLAGS=`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG["CPPFLAGS"]'`];
fi
AC_MSG_RESULT([$RUBY_EXT_CPPFLAGS])
AC_SUBST(RUBY_EXT_CPPFLAGS)
#
# Check for Ruby extensions link flags.
#
AC_ARG_VAR(RUBY_EXT_LDFLAGS, [LDFLAGS to build Ruby extensions])
AC_MSG_CHECKING([for Ruby extensions linker flags])
if test -z "$RUBY_EXT_LDFLAGS" ; then
[RUBY_EXT_LDFLAGS=`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG["LDFLAGS"]'`];
[RUBY_EXT_LDFLAGS+=" "];
[RUBY_EXT_LDFLAGS+=`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG["LIBRUBYARG_SHARED"]'`];
fi
AC_MSG_RESULT([$RUBY_EXT_LDFLAGS])
AC_SUBST(RUBY_EXT_LDFLAGS)
#
# Check for Ruby dynamic library extension.
#
AC_ARG_VAR(RUBY_EXT_DLEXT, [Ruby dynamic library extension])
AC_MSG_CHECKING([for Ruby dynamic library extension])
if test -z "$RUBY_EXT_DLEXT" ; then
[RUBY_EXT_DLEXT=`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG["DLEXT"]'`];
RUBY_EXT_DLEXT=".${RUBY_EXT_DLEXT}"
fi
AC_MSG_RESULT([$RUBY_EXT_DLEXT])
AC_SUBST(RUBY_EXT_DLEXT)
fi
])
|
