libabigail/autoconf-archive/ax_check_python_modules.m4
Dodji Seketeli 38ac2a8fb2 Improve python modules detection
After I tried to build libabigail on Debian, I realized the detection
of python modules wasn't that great.  The koji module wasn't present
and yet the detection system tried to launch fedabipkgdiff regression
tests.  Woops.

I was thinking about coming up with something easier to to update to
add new modules to check for anyway, so I just dived in.  I came up
with a new autoconf macro of my own, AX_CHECK_PYTHON_MODULES, that
lets you check for the presence of several python modules at once.
This is more handy than having to call AX_PYTHON_MODULE for each
module we want to detect.  This fixes the detection issue I found and
simplifies configure.ac.

	* configure.ac: Include
	autoconf-archive/ax_check_python_modules.m4 rather than
	autoconf-archive/ax_python_module.m4.  Use AX_CHECK_PYTHON_MODULES
	rather than AX_PYTHON_MODULE.
	* Makefile.am: Add the new file
	autoconf-archive/ax_check_python_modules.m4 to source distribution
	and remove the older autoconf-archive/ax_python_module.m4 one.
	* autoconf-archive/ax_check_python_modules.m4: New file.
	* autoconf-archive/ax_python_module.m4: Remove.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-06-03 17:53:11 +02:00

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# -*- Autoconf -*-
#
# ax_check_python_modules.m4 - Macros to locate python modules.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
#
# Author: Dodji Seketeli <dodji@seketeli.org>
#
#--------------------------------------------------------------------------------
#
# SYNOPSIS
#
# AX_CHECK_PYTHON_MODULE(MODNAME,
# PYTHON,
# ACTION-IF-FOUND,
# ACTION-IF-NOT-FOUND)
#
# DESCRIPTION
#
# Check that a python module is present on the system.
#
# MODNAME is the name of the python module to check for.
#
# PYTHON is either python2 or python3. It's the python interpreter
# to use. By default, this is python3.
#
# If the module MODNAME is found, the shell variable
# HAVE_PYMOD_MODNAME is set to 'yes' and ACTION-IF_FOUND is
# evaluated. Otherwise the shell variable HAVE_PYMOD_MODNAME is set
# to 'no' and ACTION-IF-NOT-FOUND is evaluated.
#
# Note that this macro was inspired from the ax_python_module.m4
# at
# http://www.gnu.org/software/autoconf-archive/ax_python_module.html.
#
#----------------------------------------------------------------------------------
AU_ALIAS([AC_CHECK_PYTHON_MODULE], [AX_CHECK_PYTHON_MODULE])
AC_DEFUN([AX_CHECK_PYTHON_MODULE],[
if test -z $PYTHON; then
if test -z "$2"; then
PYTHON="python3"
else
PYTHON="$2"
fi
fi
PYTHON_NAME=`basename $PYTHON`
AC_MSG_CHECKING($PYTHON_NAME module: $1)
$PYTHON -c "import $1" 2>/dev/null
if test $? -eq 0; then
AC_MSG_RESULT(yes)
eval AS_TR_CPP(HAVE_PYMOD_$1)=yes
$3
#
else
AC_MSG_RESULT(no)
eval AS_TR_CPP(HAVE_PYMOD_$1)=no
$4
#
fi
])
#--------------------------------------------------------------------------------
#
# SYNOPSIS
#
# AX_CHECK_PYTHON_MODULES(MODLIST,
# PYTHON,
# ACTION-IF-FOUND,
# ACTION-IF-NOT-FOUND)
#
# DESCRIPTION
#
# Checks that a set of Python modules are present on the system.
#
# MODLIST is a white space separated list of python modules to check
# for.
#
# PYTHON is either python2 or python3. It's the name of the python
# interpreter to use to perform the checking. By default, uses
# python3.
#
# If there is a module from MODLIST that is not found the execution
# of the test stops and ACTION-IF-NOT-FOUND is evaluated.
# Otherwise, if all modules are found, ACTION-IF-FOUND is evaluated.
#
#--------------------------------------------------------------------------------
AU_ALIAS([AC_CHECK_PYTHON_MODULES], [AX_CHECK_PYTHON_MODULES])
AC_DEFUN([AX_CHECK_PYTHON_MODULES], [
ax_python_modules_are_ok__=yes
for m in $1; do
AX_CHECK_PYTHON_MODULE([$m],
$2,
[ax_python_module_FOUND__=yes],
[ax_python_module_FOUND__=no])
if test x$ax_python_module_FOUND__ = xno; then
MISSING_PYTHON_MODULES="$MISSING_PYTHON_MODULES $m"
ax_python_modules_are_ok__=no
fi
done
if test x$ax_python_modules_are_ok__ = xyes; then
$3
#
else
$4
#
fi
])