dnl These m4 macros are whitespace sensitive and break if moved around much.

m4_define([LU_VERSION_H], m4_include([libusb/version.h]))

m4_define([LU_DEFINE_VERSION_ATOM],

	[m4_define([$1], m4_bregexp(LU_VERSION_H,

	[^#define\s*$1\s*\([0-9]*\).*], [\1]))])

m4_define([LU_DEFINE_VERSION_RC_ATOM],

	[m4_define([$1], m4_bregexp(LU_VERSION_H,

	[^#define\s*$1\s*"\(-rc[0-9]*\)".*], [\1]))])

dnl The m4_bregexp() returns (only) the numbers following the #define named

dnl in the first macro parameter. m4_define() then defines the name for use

dnl in AC_INIT.

LU_DEFINE_VERSION_ATOM([LIBUSB_MAJOR])

LU_DEFINE_VERSION_ATOM([LIBUSB_MINOR])

LU_DEFINE_VERSION_ATOM([LIBUSB_MICRO])

LU_DEFINE_VERSION_RC_ATOM([LIBUSB_RC])

AC_INIT([libusb],[LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO[]LIBUSB_RC],[libusb-devel@lists.sourceforge.net],[libusb],[http://libusb.info])

# Library versioning

# These numbers should be tweaked on every release. Read carefully:

# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html

# http://sourceware.org/autobook/autobook/autobook_91.html

lt_current=2

lt_revision=0

lt_age=2

LTLDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age}"

AM_INIT_AUTOMAKE

AC_CONFIG_SRCDIR([libusb/core.c])

AC_CONFIG_MACRO_DIR([m4])

AC_CONFIG_HEADERS([config.h])

m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

AC_PREREQ([2.69])

AC_PROG_CC

AC_PROG_CXX

LT_INIT

LT_LANG([Windows Resource])

AC_C_INLINE

AM_PROG_CC_C_O

AC_DEFINE([_GNU_SOURCE], 1, [Use GNU extensions])

LTLDFLAGS="${LTLDFLAGS} -no-undefined"

AC_MSG_CHECKING([operating system])

dnl on linux-android platform, some functions are in different places

case $host in

*-linux-android*)

	AC_MSG_RESULT([This is a Linux-Android system])

	is_backend_android=yes

	;;

*)

	is_backend_android=no

esac

case $host in

*-linux* | *-uclinux*)

	AC_MSG_RESULT([Linux])

	backend=linux

	threads=posix

	;;

*-darwin*)

	AC_MSG_RESULT([Darwin/Mac OS X])

	backend=darwin

	threads=posix

	;;

*-openbsd*)

	AC_MSG_RESULT([OpenBSD])

	backend=openbsd

	threads=posix

	;;

*-netbsd*)

	AC_MSG_RESULT([NetBSD])

	backend=netbsd

	threads=posix

	;;

*-mingw* | *msys*)

	AC_MSG_RESULT([Windows])

	backend=windows

	threads=windows

	create_import_lib=yes

	AM_CFLAGS="${AM_CFLAGS} -fno-omit-frame-pointer"

	;;

*-cygwin*)

	AC_MSG_RESULT([Cygwin (using Windows backend)])

	backend=windows

	threads=posix

	;;

*-haiku*)

	AC_MSG_RESULT([Haiku])

	backend=haiku

	threads=posix

	;;

*-solaris*)

	AC_MSG_RESULT([SunOS])

	backend=sunos

	threads=posix

	;;

*)

	AC_MSG_RESULT([Null])

	backend="null"

	threads="posix"

esac

case $backend in

linux)

	AC_DEFINE(OS_LINUX, 1, [Linux backend])

	AC_SUBST(OS_LINUX)

	AC_SEARCH_LIBS([clock_gettime], [rt], [], [], [-pthread])

	AC_ARG_ENABLE([udev],

		[AC_HELP_STRING([--enable-udev], [use udev for device enumeration and hotplug support (recommended) [default=yes]])],

		[], [enable_udev=yes])

		if test "x$enable_udev" = xyes ; then

			# system has udev. use it or fail!

			AC_CHECK_HEADERS([libudev.h], [], [AC_MSG_ERROR([udev support requested but libudev header not installed])])

			AC_CHECK_LIB([udev], [udev_new], [], [AC_MSG_ERROR([udev support requested but libudev not installed])])

			AC_DEFINE(USE_UDEV, 1, [Use udev for device enumeration/hotplug])

		else

			AC_CHECK_HEADERS([asm/types.h], [], [])

			AC_CHECK_HEADERS([sys/socket.h linux/netlink.h], [], [AC_MSG_ERROR([Linux netlink headers not found])], [

#ifdef HAVE_ASM_TYPES_H

#include <asm/types.h>

#endif

#include <sys/socket.h>

])

		fi

		AC_SUBST(USE_UDEV)

	if test "x$is_backend_android" != xyes; then

		THREAD_CFLAGS="-pthread"

		LIBS="${LIBS} -pthread"

	fi

	AC_CHECK_HEADERS([poll.h])

	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])

	;;

darwin)

	AC_DEFINE(OS_DARWIN, 1, [Darwin backend])

	AC_SUBST(OS_DARWIN)

	LIBS="-lobjc -Wl,-framework,IOKit -Wl,-framework,CoreFoundation"

	LTLDFLAGS="${LTLDFLAGS} -Wl,-prebind"

	AC_CHECK_HEADERS([poll.h])

	AC_CHECK_TYPE([nfds_t],

		[AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])],

		[AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])],

		[#include <poll.h>])

	;;

openbsd)

	AC_DEFINE(OS_OPENBSD, 1, [OpenBSD backend])

	AC_SUBST(OS_OPENBSD)

	THREAD_CFLAGS="-pthread"

	LIBS="-pthread"

	AC_CHECK_HEADERS([poll.h])

	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])

	;;

sunos)

	AC_DEFINE(OS_SUNOS, 1, [SunOS backend])

	AC_SUBST(OS_SUNOS)

	THREAD_CFLAGS="-pthread"

	LIBS="-pthread -ldevinfo"

	AC_CHECK_HEADERS([poll.h])

	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])

	;;

netbsd)

	AC_DEFINE(OS_NETBSD, 1, [NetBSD backend])

	AC_SUBST(OS_NETBSD)

	THREAD_CFLAGS="-pthread"

	LIBS="-pthread"

	AC_CHECK_HEADERS([poll.h])

	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])

	;;

windows)

	AC_DEFINE(OS_WINDOWS, 1, [Windows backend])

	AC_SUBST(OS_WINDOWS)

	LIBS=""

	LTLDFLAGS="${LTLDFLAGS} -avoid-version -Wl,--add-stdcall-alias"

	AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])

	AC_DEFINE([WINVER], 0x0501, [Oldest Windows version supported])

	AC_DEFINE([_WIN32_WINNT], 0x0501, [Oldest Windows version supported])

	;;

haiku)

	AC_DEFINE(OS_HAIKU, 1, [Haiku backend])

	AC_SUBST(OS_HAIKU)

	LIBS="${LIBS} -lbe"

	AC_CHECK_HEADERS([poll.h])

	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])

	;;

null)

	AC_DEFINE(OS_NULL, 1, [Null backend])

	AC_SUBST(OS_NULL)

	THREAD_CFLAGS="-pthread"

	LIBS="-pthread"

	AC_CHECK_HEADERS([poll.h])

	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])

	;;

esac

AC_SUBST(LIBS)

AM_CONDITIONAL(OS_LINUX, test "x$backend" = xlinux)

AM_CONDITIONAL(OS_DARWIN, test "x$backend" = xdarwin)

AM_CONDITIONAL(OS_OPENBSD, test "x$backend" = xopenbsd)

AM_CONDITIONAL(OS_SUNOS, test "x$backend" = xsunos)

AM_CONDITIONAL(OS_NETBSD, test "x$backend" = xnetbsd)

AM_CONDITIONAL(OS_WINDOWS, test "x$backend" = xwindows)

AM_CONDITIONAL(OS_HAIKU, test "x$backend" = xhaiku)

AM_CONDITIONAL(OS_NULL, test "x$backend" = xnull)

AM_CONDITIONAL(THREADS_POSIX, test "x$threads" = xposix)

AM_CONDITIONAL(CREATE_IMPORT_LIB, test "x$create_import_lib" = xyes)

AM_CONDITIONAL(USE_UDEV, test "x$enable_udev" = xyes)

if test "x$threads" = xposix; then

	AC_DEFINE(THREADS_POSIX, 1, [Use POSIX Threads])

fi

# timerfd

AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])

AC_ARG_ENABLE([timerfd],

	[AS_HELP_STRING([--enable-timerfd],

		[use timerfd for timing [default=auto]])],

	[use_timerfd=$enableval], [use_timerfd=auto])

if test "x$use_timerfd" = xyes -a "x$timerfd_h" = x0; then

	AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])

fi

AC_CHECK_DECLS([TFD_NONBLOCK, TFD_CLOEXEC], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])

if test "x$use_timerfd" = xyes -a "x$tfd_hdr_ok" = xno; then

	AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])

fi

AC_MSG_CHECKING([whether to use timerfd for timing])

if test "x$use_timerfd" = xno; then

	AC_MSG_RESULT([no (disabled by user)])

else

	if test "x$timerfd_h" = x1 -a "x$tfd_hdr_ok" = xyes; then

		AC_MSG_RESULT([yes])

		AC_DEFINE(USBI_TIMERFD_AVAILABLE, 1, [timerfd headers available])

	else

		AC_MSG_RESULT([no (header not available)])

	fi

fi

AC_CHECK_FUNCS([pipe2])

AC_CHECK_TYPES([struct timespec])

# Message logging

AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],

	[log_enabled=$enableval],

	[log_enabled=yes])

if test "x$log_enabled" != xno; then

	AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])

fi

AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],

	[start with debug message logging enabled [default=no]])],

	[debug_log_enabled=$enableval],

	[debug_log_enabled=no])

if test "x$debug_log_enabled" != xno; then

	AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Start with debug message logging enabled])

fi

AC_ARG_ENABLE([system-log], [AS_HELP_STRING([--enable-system-log],

	[output logging messages to system wide log, if supported by the OS [default=no]])],

	[system_log_enabled=$enableval],

	[system_log_enabled=no])

if test "x$system_log_enabled" != xno; then

	AC_DEFINE([USE_SYSTEM_LOGGING_FACILITY], 1, [Enable output to system log])

	# Check if syslog is available in standard C library

	AC_CHECK_HEADERS(syslog.h)

	AC_CHECK_FUNC([syslog], [have_syslog=yes], [have_syslog=no])

	if test "x$have_syslog" != xno; then

		AC_DEFINE([HAVE_SYSLOG_FUNC], 1, [syslog() function available])

	fi

fi

# Examples build

AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],

	[build example applications [default=no]])],

	[build_examples=$enableval],

	[build_examples=no])

AM_CONDITIONAL(BUILD_EXAMPLES, test "x$build_examples" != xno)

# Tests build

AC_ARG_ENABLE([tests-build], [AS_HELP_STRING([--enable-tests-build],

	[build test applications [default=no]])],

	[build_tests=$enableval],

	[build_tests=no])

AM_CONDITIONAL(BUILD_TESTS, test "x$build_tests" != xno)

# headers not available on all platforms but required on others

AC_CHECK_HEADERS([sys/time.h])

# sigaction not available on MinGW

AC_CHECK_FUNC([sigaction], [have_sigaction=yes], [have_sigaction=no])

AM_CONDITIONAL(HAVE_SIGACTION, test "x$have_sigaction" = xyes)

# check for -fvisibility=hidden compiler support (GCC >= 3.4)

saved_cflags="$CFLAGS"

# -Werror required for cygwin

CFLAGS="$CFLAGS -Werror -fvisibility=hidden"

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],

	[VISIBILITY_CFLAGS="-fvisibility=hidden"

	 AC_DEFINE([DEFAULT_VISIBILITY], [__attribute__((visibility("default")))], [Default visibility])],

	[VISIBILITY_CFLAGS=""

	 AC_DEFINE([DEFAULT_VISIBILITY], [], [Default visibility])],

	])

CFLAGS="$saved_cflags"

# check for -Wno-pointer-sign compiler support (GCC >= 4)

saved_cflags="$CFLAGS"

CFLAGS="$CFLAGS -Wno-pointer-sign"

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],

	nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")

CFLAGS="$saved_cflags"

# check for -std=gnu99 compiler support

saved_cflags="$CFLAGS"

CFLAGS="-std=gnu99"

AC_MSG_CHECKING([whether CC supports -std=gnu99])

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],

    [AC_MSG_RESULT([yes])]

    [AM_CFLAGS="${AM_CFLAGS} -std=gnu99"],

    [AC_MSG_RESULT([no])]

)

CFLAGS="$saved_cflags"

AM_CFLAGS="${AM_CFLAGS} -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow ${THREAD_CFLAGS} ${VISIBILITY_CFLAGS}"

AC_SUBST(AM_CFLAGS)

AC_SUBST(LTLDFLAGS)

AC_CONFIG_FILES([libusb-1.0.pc])

AC_CONFIG_FILES([Makefile])

AC_CONFIG_FILES([libusb/Makefile])

AC_CONFIG_FILES([examples/Makefile])

AC_CONFIG_FILES([tests/Makefile])

AC_CONFIG_FILES([doc/Makefile])

AC_CONFIG_FILES([doc/doxygen.cfg])

AC_OUTPUT