[libsigrok.git] / configure.ac

##
## This file is part of the libsigrok project.
##
## Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.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])

AC_INIT([libsigrok], [0.4.0],
	[sigrok-devel@lists.sourceforge.net],
	[libsigrok], [http://www.sigrok.org])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_AUX_DIR([autostuff])
AC_CONFIG_HEADERS([config.h include/libsigrok/version.h])

# We require at least automake 1.11 (needed for 'silent rules').
AM_INIT_AUTOMAKE([1.11 -Wall -Werror no-define nostdinc subdir-objects check-news color-tests])
AM_SILENT_RULES([yes])
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])

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

# Checks for programs.
AC_PROG_CC
AC_PROG_CXX
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

# Set up the libsigrok version defines.
SR_PKG_VERSION_SET([SR_PACKAGE_VERSION], [AC_PACKAGE_VERSION])

# Library version for libsigrok (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
SR_LIB_VERSION_SET([SR_LIB_VERSION], [2:0:0])

#############################
##  Optional dependencies  ##
#############################

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

# Keep track of all checked modules so we can list them at the end.
SR_PKG_CHECK_SUMMARY([sr_pkglibs_summary])

# Collect the pkg-config module names of all dependencies in SR_PKGLIBS.
# These are used to derive the compiler flags and for the "Requires.private"
# field in the generated libsigrok.pc file.
SR_VAR_OPT_PKG([SR_PKGLIBS], [sr_deps_avail])
SR_PKGLIBS_TESTS=
SR_PKGLIBS_CXX=
SR_PKGLIBS_PYTHON=

SR_ARG_OPT_PKG([libserialport], [LIBSERIALPORT], [NEED_SERIAL],
	[libserialport >= 0.1.1])

SR_ARG_OPT_PKG([libftdi], [LIBFTDI],,
	[libftdi1 >= 1.0], [libftdi >= 0.16])

# FreeBSD comes with an "integrated" libusb-1.0-style USB API.
# This means libusb-1.0 is always available; no need to check for it.
AS_CASE([$host], [*freebsd*], [sr_have_libusb=yes])

SR_ARG_OPT_PKG([libusb], [LIBUSB_1_0], [NEED_USB],
	[libusb-1.0 >= 1.0.16])

SR_ARG_OPT_PKG([librevisa], [LIBREVISA], [NEED_VISA],
	[librevisa >= 0.0.20130412])

SR_ARG_OPT_PKG([libgpib], [LIBGPIB], [NEED_GPIB],
	[libgpib])

######################
##  Feature checks  ##
######################

# The Check unit testing framework is optional. Disable if not found.
SR_PKG_CHECK([check], [SR_PKGLIBS_TESTS], [check >= 0.9.4])
AM_CONDITIONAL([HAVE_CHECK], [test "x$sr_have_check" = xyes])

AC_LANG([C])

# Enable the C99 standard if possible, and enforce the use
# of SR_API to explicitly mark all public API functions.
SR_EXTRA_CFLAGS=
SR_CHECK_COMPILE_FLAGS([SR_EXTRA_CFLAGS], [C99], [-std=c99 -c99 -AC99 -qlanglvl=extc99])
SR_CHECK_COMPILE_FLAGS([SR_EXTRA_CFLAGS], [visibility], [-fvisibility=hidden])

SR_ARG_ENABLE_WARNINGS([SR_WFLAGS], [-Wall], [-Wall -Wextra -Wmissing-prototypes])

# Check host characteristics.
AC_SYS_LARGEFILE
AC_C_BIGENDIAN

AC_CHECK_HEADERS([sys/mman.h], [SR_APPEND([sr_deps_avail], [sys_mman_h])])
AC_CHECK_HEADERS([sys/ioctl.h], [SR_APPEND([sr_deps_avail], [sys_ioctl_h])])
AC_CHECK_HEADERS([sys/timerfd.h], [SR_APPEND([sr_deps_avail], [sys_timerfd_h])])

# We need to link against the Winsock2 library for SCPI over TCP.
AS_CASE([$host], [*-mingw*], [SR_EXTRA_LIBS='-lws2_32'], [SR_EXTRA_LIBS=])

# libm (the standard math library) is always needed.
SR_SEARCH_LIBS([SR_EXTRA_LIBS], [pow], [m])

# RPC is only needed for VXI support.
AC_CACHE_CHECK([for RPC support], [sr_cv_have_rpc],
	[AC_LINK_IFELSE([AC_LANG_PROGRAM(
			[[#include <rpc/rpc.h>]m4_newline[CLIENT *rpc_test(void);]],
			[[(void) clnt_create("", 0, 0, "");]])],
		[sr_cv_have_rpc=yes], [sr_cv_have_rpc=no])])
AS_IF([test "x$sr_cv_have_rpc" = xyes],
	[AC_DEFINE([HAVE_RPC], [1], [Specifies whether we have RPC support.])])
# VXI support is only compiled if RPC support was found.
AM_CONDITIONAL([NEED_RPC], [test "x$sr_cv_have_rpc" = xyes])

########################
##  Hardware drivers  ##
########################

# Keep track of all drivers so we can list them at the end.
SR_VAR_SUMMARY([sr_driver_summary])

# Check whether the sr_deps_avail list contains all of the arguments.
# Unavailable dependencies are collected in sr_deps_missing.
sr_check_driver_deps() {
	sr_deps_missing=
	for sr_dep
	do
		AS_CASE([" $sr_deps_avail "], [*" $sr_dep "*],,
			[SR_APPEND([sr_deps_missing], [', '], [$sr_dep])])
	done
	test -z "$sr_deps_missing" || return 1
}

AC_ARG_ENABLE([all-drivers],
	[AS_HELP_STRING([--enable-all-drivers],
			[enable all drivers by default [default=yes]])],
	[], [enable_all_drivers=yes])

## _SR_DRIVER(Device name, driver-name, var-name, [dependencies...])
m4_define([_SR_DRIVER], [
	AC_ARG_ENABLE([$2],
		[AS_HELP_STRING([--enable-$2], [enable $1 support])],
		[$3=$enableval], [$3=$enable_all_drivers])

	AS_IF([test "x[$]$3" = xyes], [sr_hw_info=yes[]m4_ifval([$4], [
		sr_check_driver_deps $4 \
			|| $3=no sr_hw_info="no (missing: $sr_deps_missing)"
	])], [sr_hw_info='no (disabled)'])
	sr_driver_summary_append "$2" "$sr_hw_info"

	AM_CONDITIONAL([$3], [test "x[$]$3" = xyes])
	AM_COND_IF([$3], [AC_DEFINE([HAVE_$3], [1], [Whether to support $1 device.])])
])

## SR_DRIVER(Device name, driver-name, [dependencies...])
m4_define([SR_DRIVER],
	[_SR_DRIVER([$1], [$2], m4_expand([AS_TR_CPP([HW_$2])]), [$3])])

SR_DRIVER([Agilent DMM], [agilent-dmm], [libserialport])
SR_DRIVER([Appa 55II], [appa-55ii], [libserialport])
SR_DRIVER([ASIX SIGMA/SIGMA2], [asix-sigma], [libftdi])
SR_DRIVER([Atten PPS3xxx], [atten-pps3xxx], [libserialport])
SR_DRIVER([BayLibre ACME], [baylibre-acme], [sys_timerfd_h])
SR_DRIVER([BeagleLogic], [beaglelogic], [sys_mman_h sys_ioctl_h])
SR_DRIVER([Brymen BM86x], [brymen-bm86x], [libusb])
SR_DRIVER([Brymen DMM], [brymen-dmm], [libserialport])
SR_DRIVER([CEM DT-885x], [cem-dt-885x], [libserialport])
SR_DRIVER([Center 3xx], [center-3xx], [libserialport])
SR_DRIVER([ChronoVu LA], [chronovu-la], [libftdi])
SR_DRIVER([Colead SLM], [colead-slm], [libserialport])
SR_DRIVER([Conrad DIGI 35 CPU], [conrad-digi-35-cpu], [libserialport])
SR_DRIVER([DER EE DE-5000], [deree-de5000], [libserialport])
SR_DRIVER([demo], [demo])
SR_DRIVER([Fluke DMM], [fluke-dmm], [libserialport])
SR_DRIVER([fx2lafw], [fx2lafw], [libusb])
SR_DRIVER([GMC MH 1x/2x], [gmc-mh-1x-2x], [libserialport])
SR_DRIVER([Hameg HMO], [hameg-hmo], [libserialport])
SR_DRIVER([Hantek DSO], [hantek-dso], [libusb])
SR_DRIVER([Ikalogic Scanalogic-2], [ikalogic-scanalogic2], [libusb])
SR_DRIVER([Ikalogic Scanaplus], [ikalogic-scanaplus], [libftdi])
SR_DRIVER([Kecheng KC-330B], [kecheng-kc-330b], [libusb])
SR_DRIVER([KERN scale], [kern-scale], [libserialport])
SR_DRIVER([Lascar EL-USB], [lascar-el-usb], [libusb])
SR_DRIVER([Manson HCS-3xxx], [manson-hcs-3xxx], [libserialport])
SR_DRIVER([maynuo-m97], [maynuo-m97])
SR_DRIVER([MIC 985xx], [mic-985xx], [libserialport])
SR_DRIVER([Motech LPS 30x], [motech-lps-30x], [libserialport])
SR_DRIVER([Norma DMM], [norma-dmm], [libserialport])
SR_DRIVER([OpenBench Logic Sniffer], [openbench-logic-sniffer], [libserialport])
SR_DRIVER([Pipistrello-OLS], [pipistrello-ols], [libftdi])
SR_DRIVER([Rigol DS], [rigol-ds])
SR_DRIVER([Saleae Logic16], [saleae-logic16], [libusb])
SR_DRIVER([SCPI PPS], [scpi-pps])
SR_DRIVER([serial DMM], [serial-dmm], [libserialport])
SR_DRIVER([Sysclk LWLA], [sysclk-lwla], [libusb])
SR_DRIVER([Teleinfo], [teleinfo], [libserialport])
SR_DRIVER([Testo], [testo], [libusb])
SR_DRIVER([Tondaj SL-814], [tondaj-sl-814], [libserialport])
SR_DRIVER([UNI-T DMM], [uni-t-dmm], [libusb])
SR_DRIVER([UNI-T UT32x], [uni-t-ut32x], [libusb])
SR_DRIVER([Victor DMM], [victor-dmm], [libusb])
SR_DRIVER([Yokogawa DL/DLM], [yokogawa-dlm])
SR_DRIVER([ZEROPLUS Logic Cube], [zeroplus-logic-cube], [libusb])

###############################
##  Language bindings setup  ##
###############################

AC_LANG([C++])
SR_ARG_ENABLE_WARNINGS([SR_WXXFLAGS], [-Wall], [-Wall -Wextra])

AC_ARG_ENABLE([bindings],
	[AS_HELP_STRING([--enable-bindings], [build language bindings [default=yes]])],
	[], [enable_bindings=yes])

AC_ARG_ENABLE([cxx],
	[AS_HELP_STRING([--enable-cxx], [build C++ bindings [default=yes]])],
	[], [enable_cxx=$enable_bindings])

AC_ARG_ENABLE([python],
	[AS_HELP_STRING([--enable-python], [build Python bindings [default=yes]])],
	[], [enable_python=$enable_bindings])

AC_ARG_ENABLE([java],
	[AS_HELP_STRING([--enable-java], [build Java bindings [default=yes]])],
	[], [enable_java=$enable_bindings])

####################
##  C++ bindings  ##
####################

sr_cxx_missing=

# Check if the C++ compiler supports the C++11 standard.
AX_CXX_COMPILE_STDCXX_11([noext], [optional])
AS_IF([test "x$HAVE_CXX11" != x1],
	[SR_APPEND([sr_cxx_missing], [', '], ['C++11'])])

# The C++ bindings need glibmm.
SR_PKG_CHECK([glibmm], [SR_PKGLIBS_CXX], [glibmm-2.4 >= 2.32.0])
AS_IF([test "x$sr_have_glibmm" != xyes],
	[SR_APPEND([sr_cxx_missing], [', '], [glibmm])])

# The C++ bindings use Doxygen to parse libsigrok symbols.
AC_CHECK_PROG([HAVE_DOXYGEN], [doxygen], [yes], [no])
AS_IF([test "x$HAVE_DOXYGEN" != xyes],
	[SR_APPEND([sr_cxx_missing], [', '], [Doxygen])])

# Python is needed for the C++ bindings.
AM_PATH_PYTHON([2.7],
	[HAVE_PYTHON=yes],
	[HAVE_PYTHON=no
	SR_APPEND([sr_cxx_missing], [', '], [Python])])

AS_IF([test -z "$sr_cxx_missing"],
	[BINDINGS_CXX=$enable_cxx], [BINDINGS_CXX=no])
AM_CONDITIONAL([BINDINGS_CXX], [test "x$BINDINGS_CXX" = xyes])

# C++ bindings want stoi and stod.
AM_COND_IF([BINDINGS_CXX], [
	AC_CACHE_CHECK([for stoi and stod], [sr_cv_have_stoi_stod],
		[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <string>]],
				[[(void) std::stoi("1"); (void) std::stod("1.0");]])],
			[sr_cv_have_stoi_stod=yes], [sr_cv_have_stoi_stod=no])])
	AS_IF([test "x$sr_cv_have_stoi_stod" = xyes],
		[AC_DEFINE([HAVE_STOI_STOD], [1],
			[Specifies whether we have the stoi and stod functions.])])
])

#######################
##  Python bindings  ##
#######################

AS_IF([test "x$BINDINGS_CXX" = xyes],
	[sr_python_missing=],
	[sr_python_missing='C++ bindings'])

# The Python bindings need Python development files.
SR_PKG_CHECK([python_dev], [SR_PKGLIBS_PYTHON],
	[python >= 2.7], [python2 >= 2.7], [python27 >= 2.7])
AS_IF([test "x$sr_have_python_dev" != xyes],
	[SR_APPEND([sr_python_missing], [', '], [Headers])])

# PyGObject is needed for the Python bindings.
SR_PKG_CHECK([pygobject], [SR_PKGLIBS_PYTHON], [pygobject-3.0 >= 3.0.0])
AS_IF([test "x$sr_have_pygobject" != xyes],
	[SR_APPEND([sr_python_missing], [', '], [PyGObject])])

PKG_CHECK_EXISTS([pygobject-3.0 < 3.7.91],
	[AC_DEFINE([PYGOBJECT_FLAGS_SIGNED], [1],
		[Whether last argument to pyg_flags_get_value() is signed.])])

# The Python bindings need the setuptools Python module.
# We'll let it go through even if the AX macro wasn't found,
# as the Python module may still be there.
HAVE_PYMOD_SETUPTOOLS=yes
m4_ifdef([AX_PYTHON_MODULE],
	[AX_PYTHON_MODULE([setuptools])],
	[m4_warn([unsupported], [Missing macro AX_PYTHON_MODULE: no setuptools check])])
AS_IF([test "x$HAVE_PYMOD_SETUPTOOLS" != xyes],
	[SR_APPEND([sr_python_missing], [', '], [setuptools])])

# The Python bindings use SWIG to generate code.
AC_CHECK_PROGS([SWIG], [swig swig3.0 swig2.0])
AS_IF([test "x$SWIG" = x],
	[SR_APPEND([sr_python_missing], [', '], [SWIG])])

AS_IF([test -z "$sr_python_missing"],
	[BINDINGS_PYTHON=$enable_python], [BINDINGS_PYTHON=no])
AM_CONDITIONAL([BINDINGS_PYTHON], [test "x$BINDINGS_PYTHON" = xyes])

####################
##  Java bindings ##
####################

AS_IF([test "x$BINDINGS_CXX" = xyes],
	[sr_java_missing=],
	[sr_java_missing='C++ bindings'])

# The Java bindings use SWIG to generate code.
AS_IF([test "x$SWIG" = x],
	[SR_APPEND([sr_java_missing], [', '], [SWIG])])

# Find Java compiler and JNI includes for Java bindings.
AC_CHECK_PROG([HAVE_JAVAC], [javac], [yes], [no])
AS_IF([test "x$HAVE_JAVAC" = xno],
	[SR_APPEND([sr_java_missing], [', '], [JavaC])])

AC_ARG_WITH([jni-include-path],
	[AS_HELP_STRING([[--with-jni-include-path=DIR-LIST (space-separated)]],
		[specify JNI include directories [default=detect]])],
	[JNI_INCLUDE_DIRS=" $withval"], [JNI_INCLUDE_DIRS=])

JNI_CPPFLAGS=
AS_IF([test "x$enable_java$HAVE_JAVAC" = xyesyes], [
	AX_PROG_JAVAC
	AS_IF([test -z "$JNI_INCLUDE_DIRS" && test "x$cross_compiling" != xyes], [
		## Work around the totally broken logic in AX_JNI_INCLUDE_DIR:
		## If we can find jni.h without any special search path, skip
		## the execution of the broken macro to increase our chances of
		## success.
		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <jni.h>]], [])],,
			[AX_JNI_INCLUDE_DIR])
	])
])
for sr_dir in $JNI_INCLUDE_DIRS
do
	SR_APPEND([JNI_CPPFLAGS], ["-I$sr_dir"])
done
AC_SUBST([JNI_CPPFLAGS])

sr_save_cppflags=$CPPFLAGS
SR_APPEND([CPPFLAGS], [$JNI_CPPFLAGS])
AC_CHECK_HEADER([jni.h],,
	[SR_APPEND([sr_java_missing], [', '], ['JNI headers'])])
CPPFLAGS=$sr_save_cppflags

AS_IF([test -z "$sr_java_missing"],
	[BINDINGS_JAVA=$enable_java], [BINDINGS_JAVA=no])
AM_CONDITIONAL([BINDINGS_JAVA], [test "x$BINDINGS_JAVA" = xyes])

##############################
##  Finalize configuration  ##
##############################

# Add mandatory dependencies to module list.
SR_APPEND([SR_PKGLIBS], ['libzip >= 0.10'])
AC_SUBST([SR_PKGLIBS])

# Retrieve the compile and link flags for all modules combined.
# Also, bail out at this point if any module dependency is not met.
PKG_CHECK_MODULES([LIBSIGROK], [glib-2.0 >= 2.32.0 $SR_PKGLIBS])
PKG_CHECK_MODULES([TESTS], [$SR_PKGLIBS_TESTS glib-2.0 $SR_PKGLIBS])

# SR_PKGLIBS_CXX may be empty, so only invoke these checks when
# the C++ bindings are enabled.
AM_COND_IF([BINDINGS_CXX], [
	PKG_CHECK_MODULES([LIBSIGROKCXX], [$SR_PKGLIBS_CXX])
	PKG_CHECK_MODULES([PYSIGROK], [$SR_PKGLIBS_PYTHON $SR_PKGLIBS_CXX])
])
sr_glib_version=`$PKG_CONFIG --modversion glib-2.0 2>&AS_MESSAGE_LOG_FD`
sr_libzip_version=`$PKG_CONFIG --modversion libzip 2>&AS_MESSAGE_LOG_FD`

AC_DEFINE_UNQUOTED([CONF_LIBZIP_VERSION], ["$sr_libzip_version"],
	[Build-time version of libzip.])
AC_DEFINE_UNQUOTED([CONF_HOST], ["$host"],
	[The canonical host libsigrok will run on.])

AC_CONFIG_FILES([Makefile libsigrok.pc bindings/cxx/libsigrokcxx.pc])

AC_OUTPUT

# Prepare bindings report messages.
m4_define([SR_PREPARE_BINDING_REPORT], [
	sr_report_$1=
	test -z "$sr_$1_missing" || sr_report_$1=" (missing: $sr_$1_missing)"
	test "x$enable_$1" = xyes || sr_report_$1=' (disabled)'
])
m4_map_args([SR_PREPARE_BINDING_REPORT], [cxx], [python], [java])

cat >&AS_MESSAGE_FD <<_EOF

libsigrok configuration summary:
 - Package version................. $SR_PACKAGE_VERSION
 - Library ABI version............. $SR_LIB_VERSION
 - Prefix.......................... $prefix
 - Building on..................... $build
 - Building for.................... $host
 - Additional C compiler flags..... $SR_EXTRA_CFLAGS
 - C compiler warnings............. $SR_WFLAGS
 - C++ compiler warnings........... $SR_WXXFLAGS

Detected libraries (required):
 - glib-2.0 >= 2.32.0.............. $sr_glib_version
 - libzip >= 0.10.................. $sr_libzip_version

Detected libraries (optional):
$sr_pkglibs_summary
Enabled hardware drivers:
$sr_driver_summary
Enabled SCPI backends:
 - TCP............................. yes
 - RPC............................. $sr_cv_have_rpc
 - serial.......................... $sr_have_libserialport
 - VISA............................ $sr_have_librevisa
 - GPIB............................ $sr_have_libgpib
 - USBTMC.......................... $sr_have_libusb

Enabled language bindings:
 - C++............................. $BINDINGS_CXX$sr_report_cxx
 - Python.......................... $BINDINGS_PYTHON$sr_report_python
 - Java............................ $BINDINGS_JAVA$sr_report_java

_EOF
Commit	Line	Data
	1	##
	2	## This file is part of the libsigrok project.
	3	##
	4	## Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
	5	## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
	6	##
	7	## This program is free software: you can redistribute it and/or modify
	8	## it under the terms of the GNU General Public License as published by
	9	## the Free Software Foundation, either version 3 of the License, or
	10	## (at your option) any later version.
	11	##
	12	## This program is distributed in the hope that it will be useful,
	13	## but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	## GNU General Public License for more details.
	16	##
	17	## You should have received a copy of the GNU General Public License
	18	## along with this program. If not, see <http://www.gnu.org/licenses/>.
	19	##
	20
	21	# We require at least autoconf 2.63 (AC_INIT format changed there).
	22	AC_PREREQ([2.63])
	23
	24	AC_INIT([libsigrok], [0.4.0],
	25	[sigrok-devel@lists.sourceforge.net],
	26	[libsigrok], [http://www.sigrok.org])
	27	AC_CONFIG_MACRO_DIR([m4])
	28	AC_CONFIG_AUX_DIR([autostuff])
	29	AC_CONFIG_HEADERS([config.h include/libsigrok/version.h])
	30
	31	# We require at least automake 1.11 (needed for 'silent rules').
	32	AM_INIT_AUTOMAKE([1.11 -Wall -Werror no-define nostdinc subdir-objects check-news color-tests])
	33	AM_SILENT_RULES([yes])
	34	m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
	35
	36	AH_TOP([#ifndef SR_CONFIG_H
	37	#define SR_CONFIG_H /* To stop multiple inclusions. */])
	38	AH_BOTTOM([#endif /* SR_CONFIG_H */])
	39
	40	# Checks for programs.
	41	AC_PROG_CC
	42	AC_PROG_CXX
	43	AC_PROG_INSTALL
	44	AC_PROG_LN_S
	45
	46	# Required for per-target flags or subdir-objects with C sources.
	47	AM_PROG_CC_C_O
	48
	49	# Initialize libtool.
	50	LT_INIT
	51
	52	# Set up the libsigrok version defines.
	53	SR_PKG_VERSION_SET([SR_PACKAGE_VERSION], [AC_PACKAGE_VERSION])
	54
	55	# Library version for libsigrok (NOT the same as the package version).
	56	# Carefully read the libtool docs before updating these numbers!
	57	# The algorithm for determining which number to change (and how) is nontrivial!
	58	# http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
	59	SR_LIB_VERSION_SET([SR_LIB_VERSION], [2:0:0])
	60
	61	#############################
	62	## Optional dependencies ##
	63	#############################
	64
	65	# Initialize pkg-config.
	66	# We require at least 0.22, as "Requires.private" behaviour changed there.
	67	PKG_PROG_PKG_CONFIG([0.22])
	68
	69	# Keep track of all checked modules so we can list them at the end.
	70	SR_PKG_CHECK_SUMMARY([sr_pkglibs_summary])
	71
	72	# Collect the pkg-config module names of all dependencies in SR_PKGLIBS.
	73	# These are used to derive the compiler flags and for the "Requires.private"
	74	# field in the generated libsigrok.pc file.
	75	SR_VAR_OPT_PKG([SR_PKGLIBS], [sr_deps_avail])
	76	SR_PKGLIBS_TESTS=
	77	SR_PKGLIBS_CXX=
	78	SR_PKGLIBS_PYTHON=
	79
	80	SR_ARG_OPT_PKG([libserialport], [LIBSERIALPORT], [NEED_SERIAL],
	81	[libserialport >= 0.1.1])
	82
	83	SR_ARG_OPT_PKG([libftdi], [LIBFTDI],,
	84	[libftdi1 >= 1.0], [libftdi >= 0.16])
	85
	86	# FreeBSD comes with an "integrated" libusb-1.0-style USB API.
	87	# This means libusb-1.0 is always available; no need to check for it.
	88	AS_CASE([$host], [freebsd], [sr_have_libusb=yes])
	89
	90	SR_ARG_OPT_PKG([libusb], [LIBUSB_1_0], [NEED_USB],
	91	[libusb-1.0 >= 1.0.16])
	92
	93	SR_ARG_OPT_PKG([librevisa], [LIBREVISA], [NEED_VISA],
	94	[librevisa >= 0.0.20130412])
	95
	96	SR_ARG_OPT_PKG([libgpib], [LIBGPIB], [NEED_GPIB],
	97	[libgpib])
	98
	99	######################
	100	## Feature checks ##
	101	######################
	102
	103	# The Check unit testing framework is optional. Disable if not found.
	104	SR_PKG_CHECK([check], [SR_PKGLIBS_TESTS], [check >= 0.9.4])
	105	AM_CONDITIONAL([HAVE_CHECK], [test "x$sr_have_check" = xyes])
	106
	107	AC_LANG([C])
	108
	109	# Enable the C99 standard if possible, and enforce the use
	110	# of SR_API to explicitly mark all public API functions.
	111	SR_EXTRA_CFLAGS=
	112	SR_CHECK_COMPILE_FLAGS([SR_EXTRA_CFLAGS], [C99], [-std=c99 -c99 -AC99 -qlanglvl=extc99])
	113	SR_CHECK_COMPILE_FLAGS([SR_EXTRA_CFLAGS], [visibility], [-fvisibility=hidden])
	114
	115	SR_ARG_ENABLE_WARNINGS([SR_WFLAGS], [-Wall], [-Wall -Wextra -Wmissing-prototypes])
	116
	117	# Check host characteristics.
	118	AC_SYS_LARGEFILE
	119	AC_C_BIGENDIAN
	120
	121	AC_CHECK_HEADERS([sys/mman.h], [SR_APPEND([sr_deps_avail], [sys_mman_h])])
	122	AC_CHECK_HEADERS([sys/ioctl.h], [SR_APPEND([sr_deps_avail], [sys_ioctl_h])])
	123	AC_CHECK_HEADERS([sys/timerfd.h], [SR_APPEND([sr_deps_avail], [sys_timerfd_h])])
	124
	125	# We need to link against the Winsock2 library for SCPI over TCP.
	126	AS_CASE([$host], [-mingw], [SR_EXTRA_LIBS='-lws2_32'], [SR_EXTRA_LIBS=])
	127
	128	# libm (the standard math library) is always needed.
	129	SR_SEARCH_LIBS([SR_EXTRA_LIBS], [pow], [m])
	130
	131	# RPC is only needed for VXI support.
	132	AC_CACHE_CHECK([for RPC support], [sr_cv_have_rpc],
	133	[AC_LINK_IFELSE([AC_LANG_PROGRAM(
	134	[[#include <rpc/rpc.h>]m4_newline[CLIENT *rpc_test(void);]],
	135	[[(void) clnt_create("", 0, 0, "");]])],
	136	[sr_cv_have_rpc=yes], [sr_cv_have_rpc=no])])
	137	AS_IF([test "x$sr_cv_have_rpc" = xyes],
	138	[AC_DEFINE([HAVE_RPC], [1], [Specifies whether we have RPC support.])])
	139	# VXI support is only compiled if RPC support was found.
	140	AM_CONDITIONAL([NEED_RPC], [test "x$sr_cv_have_rpc" = xyes])
	141
	142	########################
	143	## Hardware drivers ##
	144	########################
	145
	146	# Keep track of all drivers so we can list them at the end.
	147	SR_VAR_SUMMARY([sr_driver_summary])
	148
	149	# Check whether the sr_deps_avail list contains all of the arguments.
	150	# Unavailable dependencies are collected in sr_deps_missing.
	151	sr_check_driver_deps() {
	152	sr_deps_missing=
	153	for sr_dep
	154	do
	155	AS_CASE([" $sr_deps_avail "], [" $sr_dep "],,
	156	[SR_APPEND([sr_deps_missing], [', '], [$sr_dep])])
	157	done
	158	test -z "$sr_deps_missing" \|\| return 1
	159	}
	160
	161	AC_ARG_ENABLE([all-drivers],
	162	[AS_HELP_STRING([--enable-all-drivers],
	163	[enable all drivers by default [default=yes]])],
	164	[], [enable_all_drivers=yes])
	165
	166	## _SR_DRIVER(Device name, driver-name, var-name, [dependencies...])
	167	m4_define([_SR_DRIVER], [
	168	AC_ARG_ENABLE([$2],
	169	[AS_HELP_STRING([--enable-$2], [enable $1 support])],
	170	[$3=$enableval], [$3=$enable_all_drivers])
	171
	172	AS_IF([test "x[$]$3" = xyes], [sr_hw_info=yes[]m4_ifval([$4], [
	173	sr_check_driver_deps $4 \
	174	\|\| $3=no sr_hw_info="no (missing: $sr_deps_missing)"
	175	])], [sr_hw_info='no (disabled)'])
	176	sr_driver_summary_append "$2" "$sr_hw_info"
	177
	178	AM_CONDITIONAL([$3], [test "x[$]$3" = xyes])
	179	AM_COND_IF([$3], [AC_DEFINE([HAVE_$3], [1], [Whether to support $1 device.])])
	180	])
	181
	182	## SR_DRIVER(Device name, driver-name, [dependencies...])
	183	m4_define([SR_DRIVER],
	184	[_SR_DRIVER([$1], [$2], m4_expand([AS_TR_CPP([HW_$2])]), [$3])])
	185
	186	SR_DRIVER([Agilent DMM], [agilent-dmm], [libserialport])
	187	SR_DRIVER([Appa 55II], [appa-55ii], [libserialport])
	188	SR_DRIVER([ASIX SIGMA/SIGMA2], [asix-sigma], [libftdi])
	189	SR_DRIVER([Atten PPS3xxx], [atten-pps3xxx], [libserialport])
	190	SR_DRIVER([BayLibre ACME], [baylibre-acme], [sys_timerfd_h])
	191	SR_DRIVER([BeagleLogic], [beaglelogic], [sys_mman_h sys_ioctl_h])
	192	SR_DRIVER([Brymen BM86x], [brymen-bm86x], [libusb])
	193	SR_DRIVER([Brymen DMM], [brymen-dmm], [libserialport])
	194	SR_DRIVER([CEM DT-885x], [cem-dt-885x], [libserialport])
	195	SR_DRIVER([Center 3xx], [center-3xx], [libserialport])
	196	SR_DRIVER([ChronoVu LA], [chronovu-la], [libftdi])
	197	SR_DRIVER([Colead SLM], [colead-slm], [libserialport])
	198	SR_DRIVER([Conrad DIGI 35 CPU], [conrad-digi-35-cpu], [libserialport])
	199	SR_DRIVER([DER EE DE-5000], [deree-de5000], [libserialport])
	200	SR_DRIVER([demo], [demo])
	201	SR_DRIVER([Fluke DMM], [fluke-dmm], [libserialport])
	202	SR_DRIVER([fx2lafw], [fx2lafw], [libusb])
	203	SR_DRIVER([GMC MH 1x/2x], [gmc-mh-1x-2x], [libserialport])
	204	SR_DRIVER([Hameg HMO], [hameg-hmo], [libserialport])
	205	SR_DRIVER([Hantek DSO], [hantek-dso], [libusb])
	206	SR_DRIVER([Ikalogic Scanalogic-2], [ikalogic-scanalogic2], [libusb])
	207	SR_DRIVER([Ikalogic Scanaplus], [ikalogic-scanaplus], [libftdi])
	208	SR_DRIVER([Kecheng KC-330B], [kecheng-kc-330b], [libusb])
	209	SR_DRIVER([KERN scale], [kern-scale], [libserialport])
	210	SR_DRIVER([Lascar EL-USB], [lascar-el-usb], [libusb])
	211	SR_DRIVER([Manson HCS-3xxx], [manson-hcs-3xxx], [libserialport])
	212	SR_DRIVER([maynuo-m97], [maynuo-m97])
	213	SR_DRIVER([MIC 985xx], [mic-985xx], [libserialport])
	214	SR_DRIVER([Motech LPS 30x], [motech-lps-30x], [libserialport])
	215	SR_DRIVER([Norma DMM], [norma-dmm], [libserialport])
	216	SR_DRIVER([OpenBench Logic Sniffer], [openbench-logic-sniffer], [libserialport])
	217	SR_DRIVER([Pipistrello-OLS], [pipistrello-ols], [libftdi])
	218	SR_DRIVER([Rigol DS], [rigol-ds])
	219	SR_DRIVER([Saleae Logic16], [saleae-logic16], [libusb])
	220	SR_DRIVER([SCPI PPS], [scpi-pps])
	221	SR_DRIVER([serial DMM], [serial-dmm], [libserialport])
	222	SR_DRIVER([Sysclk LWLA], [sysclk-lwla], [libusb])
	223	SR_DRIVER([Teleinfo], [teleinfo], [libserialport])
	224	SR_DRIVER([Testo], [testo], [libusb])
	225	SR_DRIVER([Tondaj SL-814], [tondaj-sl-814], [libserialport])
	226	SR_DRIVER([UNI-T DMM], [uni-t-dmm], [libusb])
	227	SR_DRIVER([UNI-T UT32x], [uni-t-ut32x], [libusb])
	228	SR_DRIVER([Victor DMM], [victor-dmm], [libusb])
	229	SR_DRIVER([Yokogawa DL/DLM], [yokogawa-dlm])
	230	SR_DRIVER([ZEROPLUS Logic Cube], [zeroplus-logic-cube], [libusb])
	231
	232	###############################
	233	## Language bindings setup ##
	234	###############################
	235
	236	AC_LANG([C++])
	237	SR_ARG_ENABLE_WARNINGS([SR_WXXFLAGS], [-Wall], [-Wall -Wextra])
	238
	239	AC_ARG_ENABLE([bindings],
	240	[AS_HELP_STRING([--enable-bindings], [build language bindings [default=yes]])],
	241	[], [enable_bindings=yes])
	242
	243	AC_ARG_ENABLE([cxx],
	244	[AS_HELP_STRING([--enable-cxx], [build C++ bindings [default=yes]])],
	245	[], [enable_cxx=$enable_bindings])
	246
	247	AC_ARG_ENABLE([python],
	248	[AS_HELP_STRING([--enable-python], [build Python bindings [default=yes]])],
	249	[], [enable_python=$enable_bindings])
	250
	251	AC_ARG_ENABLE([java],
	252	[AS_HELP_STRING([--enable-java], [build Java bindings [default=yes]])],
	253	[], [enable_java=$enable_bindings])
	254
	255	####################
	256	## C++ bindings ##
	257	####################
	258
	259	sr_cxx_missing=
	260
	261	# Check if the C++ compiler supports the C++11 standard.
	262	AX_CXX_COMPILE_STDCXX_11([noext], [optional])
	263	AS_IF([test "x$HAVE_CXX11" != x1],
	264	[SR_APPEND([sr_cxx_missing], [', '], ['C++11'])])
	265
	266	# The C++ bindings need glibmm.
	267	SR_PKG_CHECK([glibmm], [SR_PKGLIBS_CXX], [glibmm-2.4 >= 2.32.0])
	268	AS_IF([test "x$sr_have_glibmm" != xyes],
	269	[SR_APPEND([sr_cxx_missing], [', '], [glibmm])])
	270
	271	# The C++ bindings use Doxygen to parse libsigrok symbols.
	272	AC_CHECK_PROG([HAVE_DOXYGEN], [doxygen], [yes], [no])
	273	AS_IF([test "x$HAVE_DOXYGEN" != xyes],
	274	[SR_APPEND([sr_cxx_missing], [', '], [Doxygen])])
	275
	276	# Python is needed for the C++ bindings.
	277	AM_PATH_PYTHON([2.7],
	278	[HAVE_PYTHON=yes],
	279	[HAVE_PYTHON=no
	280	SR_APPEND([sr_cxx_missing], [', '], [Python])])
	281
	282	AS_IF([test -z "$sr_cxx_missing"],
	283	[BINDINGS_CXX=$enable_cxx], [BINDINGS_CXX=no])
	284	AM_CONDITIONAL([BINDINGS_CXX], [test "x$BINDINGS_CXX" = xyes])
	285
	286	# C++ bindings want stoi and stod.
	287	AM_COND_IF([BINDINGS_CXX], [
	288	AC_CACHE_CHECK([for stoi and stod], [sr_cv_have_stoi_stod],
	289	[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <string>]],
	290	[[(void) std::stoi("1"); (void) std::stod("1.0");]])],
	291	[sr_cv_have_stoi_stod=yes], [sr_cv_have_stoi_stod=no])])
	292	AS_IF([test "x$sr_cv_have_stoi_stod" = xyes],
	293	[AC_DEFINE([HAVE_STOI_STOD], [1],
	294	[Specifies whether we have the stoi and stod functions.])])
	295	])
	296
	297	#######################
	298	## Python bindings ##
	299	#######################
	300
	301	AS_IF([test "x$BINDINGS_CXX" = xyes],
	302	[sr_python_missing=],
	303	[sr_python_missing='C++ bindings'])
	304
	305	# The Python bindings need Python development files.
	306	SR_PKG_CHECK([python_dev], [SR_PKGLIBS_PYTHON],
	307	[python >= 2.7], [python2 >= 2.7], [python27 >= 2.7])
	308	AS_IF([test "x$sr_have_python_dev" != xyes],
	309	[SR_APPEND([sr_python_missing], [', '], [Headers])])
	310
	311	# PyGObject is needed for the Python bindings.
	312	SR_PKG_CHECK([pygobject], [SR_PKGLIBS_PYTHON], [pygobject-3.0 >= 3.0.0])
	313	AS_IF([test "x$sr_have_pygobject" != xyes],
	314	[SR_APPEND([sr_python_missing], [', '], [PyGObject])])
	315
	316	PKG_CHECK_EXISTS([pygobject-3.0 < 3.7.91],
	317	[AC_DEFINE([PYGOBJECT_FLAGS_SIGNED], [1],
	318	[Whether last argument to pyg_flags_get_value() is signed.])])
	319
	320	# The Python bindings need the setuptools Python module.
	321	# We'll let it go through even if the AX macro wasn't found,
	322	# as the Python module may still be there.
	323	HAVE_PYMOD_SETUPTOOLS=yes
	324	m4_ifdef([AX_PYTHON_MODULE],
	325	[AX_PYTHON_MODULE([setuptools])],
	326	[m4_warn([unsupported], [Missing macro AX_PYTHON_MODULE: no setuptools check])])
	327	AS_IF([test "x$HAVE_PYMOD_SETUPTOOLS" != xyes],
	328	[SR_APPEND([sr_python_missing], [', '], [setuptools])])
	329
	330	# The Python bindings use SWIG to generate code.
	331	AC_CHECK_PROGS([SWIG], [swig swig3.0 swig2.0])
	332	AS_IF([test "x$SWIG" = x],
	333	[SR_APPEND([sr_python_missing], [', '], [SWIG])])
	334
	335	AS_IF([test -z "$sr_python_missing"],
	336	[BINDINGS_PYTHON=$enable_python], [BINDINGS_PYTHON=no])
	337	AM_CONDITIONAL([BINDINGS_PYTHON], [test "x$BINDINGS_PYTHON" = xyes])
	338
	339	####################
	340	## Java bindings ##
	341	####################
	342
	343	AS_IF([test "x$BINDINGS_CXX" = xyes],
	344	[sr_java_missing=],
	345	[sr_java_missing='C++ bindings'])
	346
	347	# The Java bindings use SWIG to generate code.
	348	AS_IF([test "x$SWIG" = x],
	349	[SR_APPEND([sr_java_missing], [', '], [SWIG])])
	350
	351	# Find Java compiler and JNI includes for Java bindings.
	352	AC_CHECK_PROG([HAVE_JAVAC], [javac], [yes], [no])
	353	AS_IF([test "x$HAVE_JAVAC" = xno],
	354	[SR_APPEND([sr_java_missing], [', '], [JavaC])])
	355
	356	AC_ARG_WITH([jni-include-path],
	357	[AS_HELP_STRING([[--with-jni-include-path=DIR-LIST (space-separated)]],
	358	[specify JNI include directories [default=detect]])],
	359	[JNI_INCLUDE_DIRS=" $withval"], [JNI_INCLUDE_DIRS=])
	360
	361	JNI_CPPFLAGS=
	362	AS_IF([test "x$enable_java$HAVE_JAVAC" = xyesyes], [
	363	AX_PROG_JAVAC
	364	AS_IF([test -z "$JNI_INCLUDE_DIRS" && test "x$cross_compiling" != xyes], [
	365	## Work around the totally broken logic in AX_JNI_INCLUDE_DIR:
	366	## If we can find jni.h without any special search path, skip
	367	## the execution of the broken macro to increase our chances of
	368	## success.
	369	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <jni.h>]], [])],,
	370	[AX_JNI_INCLUDE_DIR])
	371	])
	372	])
	373	for sr_dir in $JNI_INCLUDE_DIRS
	374	do
	375	SR_APPEND([JNI_CPPFLAGS], ["-I$sr_dir"])
	376	done
	377	AC_SUBST([JNI_CPPFLAGS])
	378
	379	sr_save_cppflags=$CPPFLAGS
	380	SR_APPEND([CPPFLAGS], [$JNI_CPPFLAGS])
	381	AC_CHECK_HEADER([jni.h],,
	382	[SR_APPEND([sr_java_missing], [', '], ['JNI headers'])])
	383	CPPFLAGS=$sr_save_cppflags
	384
	385	AS_IF([test -z "$sr_java_missing"],
	386	[BINDINGS_JAVA=$enable_java], [BINDINGS_JAVA=no])
	387	AM_CONDITIONAL([BINDINGS_JAVA], [test "x$BINDINGS_JAVA" = xyes])
	388
	389	##############################
	390	## Finalize configuration ##
	391	##############################
	392
	393	# Add mandatory dependencies to module list.
	394	SR_APPEND([SR_PKGLIBS], ['libzip >= 0.10'])
	395	AC_SUBST([SR_PKGLIBS])
	396
	397	# Retrieve the compile and link flags for all modules combined.
	398	# Also, bail out at this point if any module dependency is not met.
	399	PKG_CHECK_MODULES([LIBSIGROK], [glib-2.0 >= 2.32.0 $SR_PKGLIBS])
	400	PKG_CHECK_MODULES([TESTS], [$SR_PKGLIBS_TESTS glib-2.0 $SR_PKGLIBS])
	401
	402	# SR_PKGLIBS_CXX may be empty, so only invoke these checks when
	403	# the C++ bindings are enabled.
	404	AM_COND_IF([BINDINGS_CXX], [
	405	PKG_CHECK_MODULES([LIBSIGROKCXX], [$SR_PKGLIBS_CXX])
	406	PKG_CHECK_MODULES([PYSIGROK], [$SR_PKGLIBS_PYTHON $SR_PKGLIBS_CXX])
	407	])
	408	sr_glib_version=`$PKG_CONFIG --modversion glib-2.0 2>&AS_MESSAGE_LOG_FD`
	409	sr_libzip_version=`$PKG_CONFIG --modversion libzip 2>&AS_MESSAGE_LOG_FD`
	410
	411	AC_DEFINE_UNQUOTED([CONF_LIBZIP_VERSION], ["$sr_libzip_version"],
	412	[Build-time version of libzip.])
	413	AC_DEFINE_UNQUOTED([CONF_HOST], ["$host"],
	414	[The canonical host libsigrok will run on.])
	415
	416	AC_CONFIG_FILES([Makefile libsigrok.pc bindings/cxx/libsigrokcxx.pc])
	417
	418	AC_OUTPUT
	419
	420	# Prepare bindings report messages.
	421	m4_define([SR_PREPARE_BINDING_REPORT], [
	422	sr_report_$1=
	423	test -z "$sr_$1_missing" \|\| sr_report_$1=" (missing: $sr_$1_missing)"
	424	test "x$enable_$1" = xyes \|\| sr_report_$1=' (disabled)'
	425	])
	426	m4_map_args([SR_PREPARE_BINDING_REPORT], [cxx], [python], [java])
	427
	428	cat >&AS_MESSAGE_FD <<_EOF
	429
	430	libsigrok configuration summary:
	431	- Package version................. $SR_PACKAGE_VERSION
	432	- Library ABI version............. $SR_LIB_VERSION
	433	- Prefix.......................... $prefix
	434	- Building on..................... $build
	435	- Building for.................... $host
	436	- Additional C compiler flags..... $SR_EXTRA_CFLAGS
	437	- C compiler warnings............. $SR_WFLAGS
	438	- C++ compiler warnings........... $SR_WXXFLAGS
	439
	440	Detected libraries (required):
	441	- glib-2.0 >= 2.32.0.............. $sr_glib_version
	442	- libzip >= 0.10.................. $sr_libzip_version
	443
	444	Detected libraries (optional):
	445	$sr_pkglibs_summary
	446	Enabled hardware drivers:
	447	$sr_driver_summary
	448	Enabled SCPI backends:
	449	- TCP............................. yes
	450	- RPC............................. $sr_cv_have_rpc
	451	- serial.......................... $sr_have_libserialport
	452	- VISA............................ $sr_have_librevisa
	453	- GPIB............................ $sr_have_libgpib
	454	- USBTMC.......................... $sr_have_libusb
	455
	456	Enabled language bindings:
	457	- C++............................. $BINDINGS_CXX$sr_report_cxx
	458	- Python.......................... $BINDINGS_PYTHON$sr_report_python
	459	- Java............................ $BINDINGS_JAVA$sr_report_java
	460
	461	_EOF