+# 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])
+
+# Check for compiler support of 128 bit integers
+AC_CHECK_TYPES([__int128_t, __uint128_t], [], [], [])
+
+########################
+## 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.]) AC_DEFINE([HAVE_DRIVERS], [1], [Whether at least one driver is enabled.])])
+])
+
+## 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([Arachnid Labs Re:load Pro], [arachnid-labs-re-load-pro], [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], [libusb libftdi])
+SR_DRIVER([Colead SLM], [colead-slm], [libserialport])
+SR_DRIVER([Conrad DIGI 35 CPU], [conrad-digi-35-cpu], [libserialport])
+SR_DRIVER([demo], [demo])
+SR_DRIVER([DreamSourceLab DSLogic], [dreamsourcelab-dslogic], [libusb])
+SR_DRIVER([Fluke 45], [fluke-45])
+SR_DRIVER([Fluke DMM], [fluke-dmm], [libserialport])
+SR_DRIVER([FTDI LA], [ftdi-la], [libusb libftdi])
+SR_DRIVER([fx2lafw], [fx2lafw], [libusb])
+SR_DRIVER([GMC MH 1x/2x], [gmc-mh-1x-2x], [libserialport])
+SR_DRIVER([GW Instek GDS-800], [gwinstek-gds-800], [libserialport])
+SR_DRIVER([GW Instek GPD], [gwinstek-gpd], [libserialport])
+SR_DRIVER([Hameg HMO], [hameg-hmo], [libserialport])
+SR_DRIVER([Hantek 4032L], [hantek-4032l], [libusb])
+SR_DRIVER([Hantek 6xxx], [hantek-6xxx], [libusb])
+SR_DRIVER([Hantek DSO], [hantek-dso], [libusb])
+SR_DRIVER([HP 3457A], [hp-3457a])
+SR_DRIVER([HP 3478A], [hp-3478a], [libgpib])
+SR_DRIVER([Hung-Chang DSO-2100], [hung-chang-dso-2100], [libieee1284])
+SR_DRIVER([Ikalogic Scanalogic-2], [ikalogic-scanalogic2], [libusb])
+SR_DRIVER([Ikalogic Scanaplus], [ikalogic-scanaplus], [libftdi])
+SR_DRIVER([IPDBG_Logic_Analyser], [ipdbg-logic-analyser])
+SR_DRIVER([Kecheng KC-330B], [kecheng-kc-330b], [libusb])
+SR_DRIVER([KERN scale], [kern-scale], [libserialport])
+SR_DRIVER([Korad KAxxxxP], [korad-kaxxxxp], [libserialport])
+SR_DRIVER([Lascar EL-USB], [lascar-el-usb], [libusb])
+SR_DRIVER([LeCroy LogicStudio], [lecroy-logicstudio], [libusb])
+SR_DRIVER([LeCroy X-Stream], [lecroy-xstream])
+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([PCE PCE-322A], [pce-322a], [libserialport])
+SR_DRIVER([Pipistrello-OLS], [pipistrello-ols], [libftdi])
+SR_DRIVER([RDTech DPSxxxx/DPHxxxx], [rdtech-dps], [libserialport])
+SR_DRIVER([Rigol DS], [rigol-ds])
+SR_DRIVER([Rohde&Schwarz SME-0x], [rohde-schwarz-sme-0x], [libserialport])
+SR_DRIVER([Saleae Logic16], [saleae-logic16], [libusb])
+SR_DRIVER([Saleae Logic Pro], [saleae-logic-pro], [libusb])
+SR_DRIVER([SCPI PPS], [scpi-pps])
+SR_DRIVER([serial DMM], [serial-dmm], [libserialport])
+SR_DRIVER([serial LCR], [serial-lcr], [libserialport])
+SR_DRIVER([Siglent SDS], [siglent-sds])
+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])
+SR_DRIVER([ZKETECH EBD-USB], [zketech-ebd-usb], [libserialport])
+
+###############################
+## 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=$enable_bindings])
+
+AC_ARG_ENABLE([ruby],
+ [AS_HELP_STRING([--enable-ruby], [build Ruby bindings [default=yes]])],
+ [], [enable_ruby=$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])])
+
+# Link C++ code with gnustl_shared if it exists (Android)
+SR_SEARCH_LIBS([SR_EXTRA_CXX_LIBS], [__cxa_throw], [gnustl_shared])
+
+# 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$BINDINGS_CXX" = xyes],
+ [sr_python_missing=],
+ [sr_python_missing='C++ bindings'])
+
+# Extract major and minor version number of the Python interpreter.
+sr_pymajor=${PYTHON_VERSION%%.*}
+sr_pyminor=${PYTHON_VERSION#*.}
+
+# The Python bindings need Python development files. Check for either
+# Python 3 or Python 2 headers depending on the interpreter version.
+SR_PKG_CHECK([python_dev], [SR_PKGLIBS_PYTHON],
+ [python = $PYTHON_VERSION],
+ [python$sr_pymajor = $PYTHON_VERSION],
+ [python$sr_pymajor$sr_pyminor = $PYTHON_VERSION],
+ [python-$PYTHON_VERSION = $PYTHON_VERSION])
+
+AS_IF([test "x$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$sr_have_pygobject" != xyes],
+ [SR_APPEND([sr_python_missing], [', '], [PyGObject])])
+
+PKG_CHECK_EXISTS([pygobject-3.0 < 3.7.91],
+ [AC_DEFINE([PYGOBJECT_FLAGS_SIGNED], [1],
+ [Whether last argument to pyg_flags_get_value() is signed.])])
+
+# The Python bindings need the setuptools and numpy Python modules.
+# We'll let it go through even if the AX macro wasn't found, as the
+# Python modules may still be there.
+m4_ifdef([AX_PYTHON_MODULE], [
+ AX_PYTHON_MODULE([setuptools])
+ AX_PYTHON_MODULE([numpy])
+], [
+ HAVE_PYMOD_SETUPTOOLS=yes
+ HAVE_PYMOD_NUMPY=yes
+ m4_warn([unsupported],
+ [Missing macro AX_PYTHON_MODULE: no check for setuptools and numpy])
+])
+AS_IF([test "x$HAVE_PYMOD_SETUPTOOLS" != xyes],
+ [SR_APPEND([sr_python_missing], [', '], [setuptools])])
+AS_IF([test "x$HAVE_PYMOD_NUMPY" != xyes],
+ [SR_APPEND([sr_python_missing], [', '], [numpy])])
+
+# The Python bindings use SWIG to generate code.
+AC_CHECK_PROGS([SWIG], [swig swig3.0 swig2.0])
+AS_IF([test "x$SWIG" != x],
+ AC_MSG_CHECKING([for $SWIG version])
+ [SWIG_VERSION=`$SWIG -version 2>&1 | sed -n 's/SWIG Version //p'`]
+ AC_MSG_RESULT([$SWIG_VERSION]))
+AS_IF([test "x$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$BINDINGS_PYTHON" = xyes])
+
+#####################
+## Ruby bindings ##
+#####################
+
+AS_IF([test "x$BINDINGS_CXX" = xyes],
+ [sr_ruby_missing=],
+ [sr_ruby_missing='C++ bindings'])
+
+AC_PATH_PROGS(RUBY, ["${RUBY-ruby}"], [])
+AS_IF([test "x$RUBY" != x],
+ AC_MSG_CHECKING([for Ruby version])
+ [RUBY_VERSION=`$RUBY -e 'puts RUBY_VERSION'`]
+ AC_MSG_RESULT([$RUBY_VERSION])
+ [RUBY_DLEXT=`$RUBY -rrbconfig -e 'puts RbConfig::CONFIG[["DLEXT"]]'`]
+ AC_SUBST(RUBY_DLEXT))
+
+AS_IF([test "x$RUBY" = x],
+ [SR_APPEND([sr_ruby_missing], [', '], [Ruby])])
+
+# Extract major and minor version number of the Ruby interpreter.
+sr_rbmajor=${RUBY_VERSION%%.*}
+sr_rbminor=${RUBY_VERSION#*.}
+sr_rbminor=${sr_rbminor%%.*}
+
+# The Ruby bindings need Ruby development files.
+SR_PKG_CHECK([ruby_dev], [SR_PKGLIBS_RUBY],
+ [ruby],
+ [ruby-$sr_rbmajor.$sr_rbminor])
+
+AS_IF([test "x$sr_have_ruby_dev" != xyes],
+ [SR_APPEND([sr_ruby_missing], [', '], [Headers])])
+
+# The Ruby bindings use SWIG >= 3.0.8 to generate code.
+AS_IF([test "x$SWIG" = x],
+ [SR_APPEND([sr_ruby_missing], [', '], [SWIG])],
+ [AS_VERSION_COMPARE($SWIG_VERSION, "3.0.8",
+ [SR_APPEND([sr_ruby_missing], [', '], ['SWIG >= 3.0.8'])])])
+
+AS_IF([test -z "$sr_ruby_missing"],
+ [BINDINGS_RUBY=$enable_ruby], [BINDINGS_RUBY=no])
+AM_CONDITIONAL([BINDINGS_RUBY], [test "x$BINDINGS_RUBY" = xyes])
+
+####################
+## Java bindings ##
+####################
+
+AS_IF([test "x$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"])