configure.ac - chromiumos/third_party/libsigrokdecode - Git at Google

 ##
 ## This file is part of the libsigrokdecode project.
 ##
 ## Copyright (C) 2010 Bert Vermeulen <bert@biot.com>
 ##
 ## 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 3 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, see <http://www.gnu.org/licenses/>.
 ##

 # We require at least autoconf 2.63 (AC_INIT format changed there).
 AC_PREREQ([2.63])

 # libsigrokdecode package version number (NOT the same as shared lib version!).
 m4_define([srd_package_version_major], [0])
 m4_define([srd_package_version_minor], [3])
 m4_define([srd_package_version_micro], [0])
 m4_define([srd_package_version], [srd_package_version_major.srd_package_version_minor.srd_package_version_micro])

 AC_INIT([libsigrokdecode], [srd_package_version],
 	[sigrok-devel@lists.sourceforge.net], [libsigrokdecode],
 	[http://www.sigrok.org])
 AC_CONFIG_HEADER([config.h])
 AC_CONFIG_MACRO_DIR([autostuff])
 AC_CONFIG_AUX_DIR([autostuff])

 # We require at least automake 1.11 (needed for 'silent rules').
 AM_INIT_AUTOMAKE([1.11 -Wall -Werror subdir-objects check-news color-tests])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])

 AH_TOP([#ifndef SRD_CONFIG_H
 #define SRD_CONFIG_H    /* To stop multiple inclusions. */])
 AH_BOTTOM([#endif /* SRD_CONFIG_H */])

 # Enable more compiler warnings via -Wall and -Wextra. Add -fvisibility=hidden
 # and enforce use of SRD_API to explicitly mark all public API functions.
 AM_CFLAGS="$AM_CFLAGS -Wall -Wextra -Wmissing-prototypes -fvisibility=hidden"

 # Checks for programs.
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_INSTALL
 AC_PROG_LN_S

 # Required for per-target flags or subdir-objects with C sources.
 AM_PROG_CC_C_O

 # Initialize libtool.
 LT_INIT

 # Initialize pkg-config.
 # We require at least 0.22, as "Requires.private" behaviour changed there.
 PKG_PROG_PKG_CONFIG([0.22])

 # Library version for libsigrokdecode (NOT the same as the package version).
 # Carefully read the libtool docs before updating these numbers!
 # The algorithm for determining which number to change (and how) is nontrivial!
 # http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
 SRD_LIB_VERSION_CURRENT=2
 SRD_LIB_VERSION_REVISION=0
 SRD_LIB_VERSION_AGE=0
 SRD_LIB_VERSION="$SRD_LIB_VERSION_CURRENT:$SRD_LIB_VERSION_REVISION:$SRD_LIB_VERSION_AGE"
 SRD_LIB_LDFLAGS="-version-info $SRD_LIB_VERSION"
 AC_SUBST(SRD_LIB_VERSION_CURRENT)
 AC_SUBST(SRD_LIB_VERSION_REVISION)
 AC_SUBST(SRD_LIB_VERSION_AGE)
 AC_SUBST(SRD_LIB_VERSION)
 AC_SUBST(SRD_LIB_LDFLAGS)

 # Checks for libraries.

 # libglib-2.0 is always needed.
 # Note: glib-2.0 is part of the libsigrokdecode API
 # (hard pkg-config requirement).
 AM_PATH_GLIB_2_0([2.24.0],
         [AM_CFLAGS="$AM_CFLAGS $GLIB_CFLAGS"; LIBS="$LIBS $GLIB_LIBS"])

 # Python 3 is always needed.
 # Note: We need to try a few different variants, since some systems have a
 # python3.pc file, others have a python-3.3.pc file, and so on.
 # We also export the name of the package so that it can be correctly
 # added to libsigrokdecode.pc.
 # See also: http://sigrok.org/wiki/Libsigrokdecode/Python
 CPPFLAGS_PYTHON=""
 LDFLAGS_PYTHON=""
 pyver="none"
 PKG_CHECK_MODULES([python3], [python3 >= 3.2],
 	[pyver=`$PKG_CONFIG --modversion python3`;
 	CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python3_CFLAGS";
 	LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python3_LIBS";
 	MODNAME_PYTHON="python3"],
 [PKG_CHECK_MODULES([python34], [python-3.4 >= 3.4],
 	[pyver=`$PKG_CONFIG --modversion python-3.4`;
 	CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python34_CFLAGS";
 	LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python34_LIBS";
 	MODNAME_PYTHON="python-3.4"],
 [PKG_CHECK_MODULES([python33], [python-3.3 >= 3.3],
 	[pyver=`$PKG_CONFIG --modversion python-3.3`;
 	CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python33_CFLAGS";
 	LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python33_LIBS";
 	MODNAME_PYTHON="python-3.3"],
 [PKG_CHECK_MODULES([python32], [python-3.2 >= 3.2],
 	[pyver=`$PKG_CONFIG --modversion python-3.2`;
 	CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python32_CFLAGS";
 	LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python32_LIBS";
 	MODNAME_PYTHON="python-3.2"],
 )])])])
 AC_SUBST(CPPFLAGS_PYTHON)
 AC_SUBST(LDFLAGS_PYTHON)
 AC_SUBST(MODNAME_PYTHON)

 # We also need to find the name of the python3 executable (for 'make install').
 # Some OSes call this python3, some call it python3.2, etc. etc.
 AC_CHECK_PROGS([PYTHON3], [python3.4 python3.3 python3.2 python3])
 if test "x$PYTHON3" = "x"; then
 	AC_MSG_ERROR([cannot find python3 executable.])
 fi

 # Link against libm, this is required (among other things) by Python.
 AC_SEARCH_LIBS([pow], [m])

 # The Check unit testing framework is optional. Disable if not found.
 PKG_CHECK_MODULES([check], [check >= 0.9.4],
 	[have_check="yes"], [have_check="no"])
 AM_CONDITIONAL(HAVE_CHECK, test x"$have_check" = "xyes")

 # Checks for header files.
 # These are already checked: inttypes.h stdint.h stdlib.h string.h unistd.h.

 AC_SUBST(DECODERS_DIR, "$datadir/libsigrokdecode/decoders")
 AC_SUBST(MAKEFLAGS, '--no-print-directory')
 AC_SUBST(AM_LIBTOOLFLAGS, '--silent')

 SRD_PACKAGE_VERSION_MAJOR=srd_package_version_major
 SRD_PACKAGE_VERSION_MINOR=srd_package_version_minor
 SRD_PACKAGE_VERSION_MICRO=srd_package_version_micro
 SRD_PACKAGE_VERSION=srd_package_version

 AC_SUBST(SRD_PACKAGE_VERSION_MAJOR)
 AC_SUBST(SRD_PACKAGE_VERSION_MINOR)
 AC_SUBST(SRD_PACKAGE_VERSION_MICRO)
 AC_SUBST(SRD_PACKAGE_VERSION)

 AC_SUBST(AM_CFLAGS)

 AC_CONFIG_FILES([Makefile version.h libsigrokdecode.pc])

 AC_OUTPUT

 echo
 echo "libsigrokdecode configuration summary:"
 echo
 echo "  - Package version (major.minor.micro):    $SRD_PACKAGE_VERSION"
 echo "  - Library version (current:revision:age): $SRD_LIB_VERSION"
 echo "  - Prefix: $prefix"
 echo "  - Building on: $build"
 echo "  - Building for: $host"
 echo
 echo "Detected libraries:"
 echo

 if test "x$pyver" = "xnone"; then
 	echo "  - (REQUIRED) python >= 3.2: no"
 else
 	echo "  - (REQUIRED) python >= 3.2: yes ($pyver)"
 fi

 # Note: This only works for libs with pkg-config integration.
 for lib in "glib-2.0 >= 2.24.0" "check >= 0.9.4"; do
 	optional="OPTIONAL"
 	if test "x$lib" = "xglib-2.0 >= 2.24.0"; then optional="REQUIRED"; fi
 	if `$PKG_CONFIG --exists $lib`; then
 		ver=`$PKG_CONFIG --modversion $lib`
 		answer="yes ($ver)"
 	else
 		answer="no"
 	fi
 	echo "  - ($optional) $lib: $answer"
 done

 echo
 echo "Enabled features:"
 echo
 echo "  - (OPTIONAL) Library unit test framework support: $have_check"
 echo
	##
	## This file is part of the libsigrokdecode project.
	##
	## Copyright (C) 2010 Bert Vermeulen <bert@biot.com>
	##
	## 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 3 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, see <http://www.gnu.org/licenses/>.
	##

	# We require at least autoconf 2.63 (AC_INIT format changed there).
	AC_PREREQ([2.63])

	# libsigrokdecode package version number (NOT the same as shared lib version!).
	m4_define([srd_package_version_major], [0])
	m4_define([srd_package_version_minor], [3])
	m4_define([srd_package_version_micro], [0])
	m4_define([srd_package_version], [srd_package_version_major.srd_package_version_minor.srd_package_version_micro])

	AC_INIT([libsigrokdecode], [srd_package_version],
	[sigrok-devel@lists.sourceforge.net], [libsigrokdecode],
	[http://www.sigrok.org])
	AC_CONFIG_HEADER([config.h])
	AC_CONFIG_MACRO_DIR([autostuff])
	AC_CONFIG_AUX_DIR([autostuff])

	# We require at least automake 1.11 (needed for 'silent rules').
	AM_INIT_AUTOMAKE([1.11 -Wall -Werror subdir-objects check-news color-tests])
	m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
	m4_ifdef([AM_PROG_AR], [AM_PROG_AR])

	AH_TOP([#ifndef SRD_CONFIG_H
	#define SRD_CONFIG_H /* To stop multiple inclusions. */])
	AH_BOTTOM([#endif /* SRD_CONFIG_H */])

	# Enable more compiler warnings via -Wall and -Wextra. Add -fvisibility=hidden
	# and enforce use of SRD_API to explicitly mark all public API functions.
	AM_CFLAGS="$AM_CFLAGS -Wall -Wextra -Wmissing-prototypes -fvisibility=hidden"

	# Checks for programs.
	AC_PROG_CC
	AC_PROG_CPP
	AC_PROG_INSTALL
	AC_PROG_LN_S

	# Required for per-target flags or subdir-objects with C sources.
	AM_PROG_CC_C_O

	# Initialize libtool.
	LT_INIT

	# Initialize pkg-config.
	# We require at least 0.22, as "Requires.private" behaviour changed there.
	PKG_PROG_PKG_CONFIG([0.22])

	# Library version for libsigrokdecode (NOT the same as the package version).
	# Carefully read the libtool docs before updating these numbers!
	# The algorithm for determining which number to change (and how) is nontrivial!
	# http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
	SRD_LIB_VERSION_CURRENT=2
	SRD_LIB_VERSION_REVISION=0
	SRD_LIB_VERSION_AGE=0
	SRD_LIB_VERSION="$SRD_LIB_VERSION_CURRENT:$SRD_LIB_VERSION_REVISION:$SRD_LIB_VERSION_AGE"
	SRD_LIB_LDFLAGS="-version-info $SRD_LIB_VERSION"
	AC_SUBST(SRD_LIB_VERSION_CURRENT)
	AC_SUBST(SRD_LIB_VERSION_REVISION)
	AC_SUBST(SRD_LIB_VERSION_AGE)
	AC_SUBST(SRD_LIB_VERSION)
	AC_SUBST(SRD_LIB_LDFLAGS)

	# Checks for libraries.

	# libglib-2.0 is always needed.
	# Note: glib-2.0 is part of the libsigrokdecode API
	# (hard pkg-config requirement).
	AM_PATH_GLIB_2_0([2.24.0],
	[AM_CFLAGS="$AM_CFLAGS $GLIB_CFLAGS"; LIBS="$LIBS $GLIB_LIBS"])

	# Python 3 is always needed.
	# Note: We need to try a few different variants, since some systems have a
	# python3.pc file, others have a python-3.3.pc file, and so on.
	# We also export the name of the package so that it can be correctly
	# added to libsigrokdecode.pc.
	# See also: http://sigrok.org/wiki/Libsigrokdecode/Python
	CPPFLAGS_PYTHON=""
	LDFLAGS_PYTHON=""
	pyver="none"
	PKG_CHECK_MODULES([python3], [python3 >= 3.2],
	[pyver=`$PKG_CONFIG --modversion python3`;
	CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python3_CFLAGS";
	LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python3_LIBS";
	MODNAME_PYTHON="python3"],
	[PKG_CHECK_MODULES([python34], [python-3.4 >= 3.4],
	[pyver=`$PKG_CONFIG --modversion python-3.4`;
	CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python34_CFLAGS";
	LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python34_LIBS";
	MODNAME_PYTHON="python-3.4"],
	[PKG_CHECK_MODULES([python33], [python-3.3 >= 3.3],
	[pyver=`$PKG_CONFIG --modversion python-3.3`;
	CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python33_CFLAGS";
	LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python33_LIBS";
	MODNAME_PYTHON="python-3.3"],
	[PKG_CHECK_MODULES([python32], [python-3.2 >= 3.2],
	[pyver=`$PKG_CONFIG --modversion python-3.2`;
	CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python32_CFLAGS";
	LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python32_LIBS";
	MODNAME_PYTHON="python-3.2"],
	)])])])
	AC_SUBST(CPPFLAGS_PYTHON)
	AC_SUBST(LDFLAGS_PYTHON)
	AC_SUBST(MODNAME_PYTHON)

	# We also need to find the name of the python3 executable (for 'make install').
	# Some OSes call this python3, some call it python3.2, etc. etc.
	AC_CHECK_PROGS([PYTHON3], [python3.4 python3.3 python3.2 python3])
	if test "x$PYTHON3" = "x"; then
	AC_MSG_ERROR([cannot find python3 executable.])
	fi

	# Link against libm, this is required (among other things) by Python.
	AC_SEARCH_LIBS([pow], [m])

	# The Check unit testing framework is optional. Disable if not found.
	PKG_CHECK_MODULES([check], [check >= 0.9.4],
	[have_check="yes"], [have_check="no"])
	AM_CONDITIONAL(HAVE_CHECK, test x"$have_check" = "xyes")

	# Checks for header files.
	# These are already checked: inttypes.h stdint.h stdlib.h string.h unistd.h.

	AC_SUBST(DECODERS_DIR, "$datadir/libsigrokdecode/decoders")
	AC_SUBST(MAKEFLAGS, '--no-print-directory')
	AC_SUBST(AM_LIBTOOLFLAGS, '--silent')

	SRD_PACKAGE_VERSION_MAJOR=srd_package_version_major
	SRD_PACKAGE_VERSION_MINOR=srd_package_version_minor
	SRD_PACKAGE_VERSION_MICRO=srd_package_version_micro
	SRD_PACKAGE_VERSION=srd_package_version

	AC_SUBST(SRD_PACKAGE_VERSION_MAJOR)
	AC_SUBST(SRD_PACKAGE_VERSION_MINOR)
	AC_SUBST(SRD_PACKAGE_VERSION_MICRO)
	AC_SUBST(SRD_PACKAGE_VERSION)

	AC_SUBST(AM_CFLAGS)

	AC_CONFIG_FILES([Makefile version.h libsigrokdecode.pc])

	AC_OUTPUT

	echo
	echo "libsigrokdecode configuration summary:"
	echo
	echo " - Package version (major.minor.micro): $SRD_PACKAGE_VERSION"
	echo " - Library version (current:revision:age): $SRD_LIB_VERSION"
	echo " - Prefix: $prefix"
	echo " - Building on: $build"
	echo " - Building for: $host"
	echo
	echo "Detected libraries:"
	echo

	if test "x$pyver" = "xnone"; then
	echo " - (REQUIRED) python >= 3.2: no"
	else
	echo " - (REQUIRED) python >= 3.2: yes ($pyver)"
	fi

	# Note: This only works for libs with pkg-config integration.
	for lib in "glib-2.0 >= 2.24.0" "check >= 0.9.4"; do
	optional="OPTIONAL"
	if test "x$lib" = "xglib-2.0 >= 2.24.0"; then optional="REQUIRED"; fi
	if `$PKG_CONFIG --exists $lib`; then
	ver=`$PKG_CONFIG --modversion $lib`
	answer="yes ($ver)"
	else
	answer="no"
	fi
	echo " - ($optional) $lib: $answer"
	done

	echo
	echo "Enabled features:"
	echo
	echo " - (OPTIONAL) Library unit test framework support: $have_check"
	echo