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      1 dnl These m4 macros are whitespace sensitive and break if moved around much.
      2 m4_define([LU_VERSION_H], m4_include([libusb/version.h]))
      3 m4_define([LU_DEFINE_VERSION_ATOM],
      4 	[m4_define([$1], m4_bregexp(LU_VERSION_H,
      5 	[^#define\s*$1\s*\([0-9]*\).*], [\1]))])
      6 m4_define([LU_DEFINE_VERSION_RC_ATOM],
      7 	[m4_define([$1], m4_bregexp(LU_VERSION_H,
      8 	[^#define\s*$1\s*"\(-rc[0-9]*\)".*], [\1]))])
      9 dnl The m4_bregexp() returns (only) the numbers following the #define named
     10 dnl in the first macro parameter. m4_define() then defines the name for use
     11 dnl in AC_INIT.
     12 
     13 LU_DEFINE_VERSION_ATOM([LIBUSB_MAJOR])
     14 LU_DEFINE_VERSION_ATOM([LIBUSB_MINOR])
     15 LU_DEFINE_VERSION_ATOM([LIBUSB_MICRO])
     16 LU_DEFINE_VERSION_RC_ATOM([LIBUSB_RC])
     17 
     18 AC_INIT([libusb],[LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO[]LIBUSB_RC],[libusb-devel (a] lists.sourceforge.net],[libusb],[http://libusb.info])
     19 
     20 # Library versioning
     21 # These numbers should be tweaked on every release. Read carefully:
     22 # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
     23 # http://sourceware.org/autobook/autobook/autobook_91.html
     24 lt_current="1"
     25 lt_revision="0"
     26 lt_age="1"
     27 LTLDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age}"
     28 
     29 AM_INIT_AUTOMAKE
     30 
     31 AC_CONFIG_SRCDIR([libusb/core.c])
     32 AC_CONFIG_MACRO_DIR([m4])
     33 AC_CONFIG_HEADERS([config.h])
     34 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
     35 
     36 AC_PREREQ([2.69])
     37 AC_PROG_CC
     38 AC_PROG_CXX
     39 LT_INIT
     40 LT_LANG([Windows Resource])
     41 AC_C_INLINE
     42 AM_PROG_CC_C_O
     43 AC_DEFINE([_GNU_SOURCE], 1, [Use GNU extensions])
     44 
     45 LTLDFLAGS="${LTLDFLAGS} -no-undefined"
     46 
     47 AC_MSG_CHECKING([operating system])
     48 
     49 dnl on linux-android platform, some functions are in different places
     50 case $host in
     51 *-linux-android*)
     52 	AC_MSG_RESULT([This is a Linux-Android system])
     53 	is_backend_android="yes"
     54 	;;
     55 *)
     56 	is_backend_android="no"
     57 esac
     58 
     59 case $host in
     60 *-linux* | *-uclinux*)
     61 	AC_MSG_RESULT([Linux])
     62 	backend="linux"
     63 	threads="posix"
     64 	;;
     65 *-darwin*)
     66 	AC_MSG_RESULT([Darwin/Mac OS X])
     67 	backend="darwin"
     68 	threads="posix"
     69 	;;
     70 *-openbsd*)
     71 	AC_MSG_RESULT([OpenBSD])
     72 	backend="openbsd"
     73 	threads="posix"
     74 	;;
     75 *-netbsd*)
     76 	AC_MSG_RESULT([NetBSD])
     77 	backend="netbsd"
     78 	threads="posix"
     79 	;;
     80 *-mingw* | *msys*)
     81 	AC_MSG_RESULT([Windows])
     82 	backend="windows"
     83 	threads="windows"
     84 	create_import_lib="yes"
     85 	AM_CFLAGS="${AM_CFLAGS} -fno-omit-frame-pointer"
     86 	;;
     87 *-cygwin*)
     88 	AC_MSG_RESULT([Cygwin (using Windows backend)])
     89 	backend="windows"
     90 	threads="posix"
     91 	;;
     92 *-haiku*)
     93 	AC_MSG_RESULT([Haiku])
     94 	backend="haiku"
     95 	threads="posix"
     96 	;;
     97 *-solaris*)
     98 	AC_MSG_RESULT([SunOS])
     99 	backend="sunos"
    100 	threads="posix"
    101 	;;
    102 *)
    103 	AC_MSG_ERROR([unsupported operating system $host])
    104 esac
    105 
    106 case $backend in
    107 linux)
    108 	AC_DEFINE(OS_LINUX, 1, [Linux backend])
    109 	AC_SUBST(OS_LINUX)
    110 	AC_SEARCH_LIBS(clock_gettime, rt, [], [], -pthread)
    111 	AC_ARG_ENABLE([udev],
    112 		[AC_HELP_STRING([--enable-udev], [use udev for device enumeration and hotplug support (recommended) [default=yes]])],
    113 		[], [enable_udev="yes"])
    114 		if test "x$enable_udev" = "xyes" ; then
    115 			# system has udev. use it or fail!
    116 			AC_CHECK_HEADERS([libudev.h],[],[AC_ERROR(["udev support requested but libudev not installed"])])
    117 			AC_CHECK_LIB([udev], [udev_new], [], [AC_ERROR(["udev support requested but libudev not installed"])])
    118 			AC_DEFINE(USE_UDEV, 1, [Use udev for device enumeration/hotplug])
    119 		else
    120 			AC_CHECK_HEADERS([asm/types.h], [], [])
    121 			AC_CHECK_HEADERS([sys/socket.h linux/netlink.h], [], [AC_ERROR(["Linux netlink headers not found"])], [
    122 #ifdef HAVE_ASM_TYPES_H
    123 #include <asm/types.h>
    124 #endif
    125 #include <sys/socket.h>
    126 ])
    127 		fi
    128 		AC_SUBST(USE_UDEV)
    129 
    130 case $is_backend_android in
    131 yes)
    132 	dnl there are gettimeofday function but configure doesn't seem to be able to find it.
    133 	AC_DEFINE([HAVE_GETTIMEOFDAY], [1], [Define if you have gettimeofday])
    134 	;;
    135 *)
    136 	THREAD_CFLAGS="-pthread"
    137 	LIBS="${LIBS} -pthread"
    138 esac
    139 
    140 	AC_CHECK_HEADERS([poll.h])
    141 	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
    142 	;;
    143 darwin)
    144 	AC_DEFINE(OS_DARWIN, 1, [Darwin backend])
    145 	AC_SUBST(OS_DARWIN)
    146 	LIBS="-lobjc -Wl,-framework,IOKit -Wl,-framework,CoreFoundation"
    147 	LTLDFLAGS="${LTLDFLAGS} -Wl,-prebind"
    148 	AC_CHECK_HEADERS([poll.h])
    149 	AC_CHECK_TYPE([nfds_t],
    150 		[AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])],
    151 		[AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])],
    152 		[#include <poll.h>])
    153 	;;
    154 openbsd)
    155 	AC_DEFINE(OS_OPENBSD, 1, [OpenBSD backend])
    156 	AC_SUBST(OS_OPENBSD)
    157 	THREAD_CFLAGS="-pthread"
    158 	LIBS="-pthread"
    159 	AC_CHECK_HEADERS([poll.h])
    160 	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
    161 	;;
    162 sunos)
    163 	AC_DEFINE(OS_SUNOS, 1, [SunOS backend])
    164 	AC_SUBST(OS_SUNOS)
    165 	THREAD_CFLAGS="-pthread"
    166 	LIBS="-pthread -ldevinfo"
    167 	AC_CHECK_HEADERS([poll.h])
    168 	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
    169 	;;
    170 netbsd)
    171 	AC_DEFINE(OS_NETBSD, 1, [NetBSD backend])
    172 	AC_SUBST(OS_NETBSD)
    173 	THREAD_CFLAGS="-pthread"
    174 	LIBS="-pthread"
    175 	AC_CHECK_HEADERS([poll.h])
    176 	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
    177 	;;
    178 windows)
    179 	AC_DEFINE(OS_WINDOWS, 1, [Windows backend])
    180 	AC_SUBST(OS_WINDOWS)
    181 	LIBS=""
    182 	LTLDFLAGS="${LTLDFLAGS} -avoid-version -Wl,--add-stdcall-alias"
    183 	AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])
    184 	AC_DEFINE([WINVER], 0x0501, [Oldest Windows version supported])
    185 
    186 	AC_ARG_ENABLE([usbdk],
    187 		[AC_HELP_STRING([--enable-usbdk], [use UsbDk Windows backend [default=no]])],
    188 		[], [enable_usbdk="no"])
    189 		if test "x$enable_usbdk" = "xyes" ; then
    190 		    AC_DEFINE(USE_USBDK, 1, [Use UsbDk Windows backend])
    191 		fi
    192 		AC_SUBST(USE_USBDK)
    193 	;;
    194 haiku)
    195 	AC_DEFINE(OS_HAIKU, 1, [Haiku backend])
    196 	AC_SUBST(OS_HAIKU)
    197 	LIBS="${LIBS} -lbe"
    198 	AC_CHECK_HEADERS([poll.h])
    199 	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
    200 	;;
    201 esac
    202 
    203 AC_SUBST(LIBS)
    204 
    205 AM_CONDITIONAL(OS_LINUX, test "x$backend" = xlinux)
    206 AM_CONDITIONAL(OS_DARWIN, test "x$backend" = xdarwin)
    207 AM_CONDITIONAL(OS_OPENBSD, test "x$backend" = xopenbsd)
    208 AM_CONDITIONAL(OS_SUNOS, test "x$backend" = xsunos)
    209 AM_CONDITIONAL(OS_NETBSD, test "x$backend" = xnetbsd)
    210 AM_CONDITIONAL(OS_WINDOWS, test "x$backend" = xwindows)
    211 AM_CONDITIONAL(OS_HAIKU, test "x$backend" = xhaiku)
    212 AM_CONDITIONAL(THREADS_POSIX, test "x$threads" = xposix)
    213 AM_CONDITIONAL(CREATE_IMPORT_LIB, test "x$create_import_lib" = "xyes")
    214 AM_CONDITIONAL(USE_UDEV, test "x$enable_udev" = xyes)
    215 AM_CONDITIONAL(USE_USBDK, test "x$enable_usbdk" = xyes)
    216 if test "$threads" = posix; then
    217 	AC_DEFINE(THREADS_POSIX, 1, [Use POSIX Threads])
    218 fi
    219 
    220 # timerfd
    221 AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
    222 AC_ARG_ENABLE([timerfd],
    223 	[AS_HELP_STRING([--enable-timerfd],
    224 		[use timerfd for timing [default=auto]])],
    225 	[use_timerfd=$enableval], [use_timerfd='auto'])
    226 
    227 if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then
    228 	AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
    229 fi
    230 
    231 AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])
    232 if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then
    233 	AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
    234 fi
    235 
    236 AC_MSG_CHECKING([whether to use timerfd for timing])
    237 if test "x$use_timerfd" = "xno"; then
    238 	AC_MSG_RESULT([no (disabled by user)])
    239 else
    240 	if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
    241 		AC_MSG_RESULT([yes])
    242 		AC_DEFINE(USBI_TIMERFD_AVAILABLE, 1, [timerfd headers available])
    243 	else
    244 		AC_MSG_RESULT([no (header not available)])
    245 	fi
    246 fi
    247 
    248 AC_CHECK_TYPES(struct timespec)
    249 
    250 # Message logging
    251 AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
    252 	[log_enabled=$enableval],
    253 	[log_enabled='yes'])
    254 if test "x$log_enabled" != "xno"; then
    255 	AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
    256 fi
    257 
    258 AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
    259 	[start with debug message logging enabled [default=no]])],
    260 	[debug_log_enabled=$enableval],
    261 	[debug_log_enabled='no'])
    262 if test "x$debug_log_enabled" != "xno"; then
    263 	AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Start with debug message logging enabled])
    264 fi
    265 
    266 AC_ARG_ENABLE([system-log], [AS_HELP_STRING([--enable-system-log],
    267 	[output logging messages to system wide log, if supported by the OS [default=no]])],
    268 	[system_log_enabled=$enableval],
    269 	[system_log_enabled='no'])
    270 if test "x$system_log_enabled" != "xno"; then
    271 	AC_DEFINE([USE_SYSTEM_LOGGING_FACILITY], 1, [Enable output to system log])
    272 fi
    273 
    274 # Check if syslog is available in standard C library
    275 AC_CHECK_HEADERS(syslog.h)
    276 AC_CHECK_FUNC([syslog], [have_syslog=yes], [have_syslog=no])
    277 if test "x$have_syslog" != "xno"; then
    278 	AC_DEFINE([HAVE_SYSLOG_FUNC], 1, [syslog() function available])
    279 fi
    280 
    281 # Examples build
    282 AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
    283 	[build example applications [default=no]])],
    284 	[build_examples=$enableval],
    285 	[build_examples='no'])
    286 AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])
    287 
    288 # Tests build
    289 AC_ARG_ENABLE([tests-build], [AS_HELP_STRING([--enable-tests-build],
    290 	[build test applications [default=no]])],
    291 	[build_tests=$enableval],
    292 	[build_tests='no'])
    293 AM_CONDITIONAL([BUILD_TESTS], [test "x$build_tests" != "xno"])
    294 
    295 # check for -fvisibility=hidden compiler support (GCC >= 3.4)
    296 saved_cflags="$CFLAGS"
    297 # -Werror required for cygwin
    298 CFLAGS="$CFLAGS -Werror -fvisibility=hidden"
    299 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
    300 	[VISIBILITY_CFLAGS="-fvisibility=hidden"
    301 	 AC_DEFINE([DEFAULT_VISIBILITY], [__attribute__((visibility("default")))], [Default visibility]) ],
    302 	[ VISIBILITY_CFLAGS=""
    303 	 AC_DEFINE([DEFAULT_VISIBILITY], [], [Default visibility]) ],
    304 	])
    305 CFLAGS="$saved_cflags"
    306 
    307 # check for -Wno-pointer-sign compiler support (GCC >= 4)
    308 saved_cflags="$CFLAGS"
    309 CFLAGS="$CFLAGS -Wno-pointer-sign"
    310 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
    311 	nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
    312 CFLAGS="$saved_cflags"
    313 
    314 # sigaction not available on MinGW
    315 AC_CHECK_FUNC([sigaction], [have_sigaction=yes], [have_sigaction=no])
    316 AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = "xyes"])
    317 
    318 # headers not available on all platforms but required on others
    319 AC_CHECK_HEADERS([sys/time.h])
    320 AC_CHECK_FUNCS(gettimeofday)
    321 AC_CHECK_HEADERS([signal.h])
    322 
    323 # check for -std=gnu99 compiler support
    324 saved_cflags="$CFLAGS"
    325 CFLAGS="-std=gnu99"
    326 AC_MSG_CHECKING([whether CC supports -std=gnu99])
    327 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
    328     [AC_MSG_RESULT([yes])]
    329     [AM_CFLAGS="${AM_CFLAGS} -std=gnu99"],
    330     [AC_MSG_RESULT([no])]
    331 )
    332 CFLAGS="$saved_cflags"
    333 
    334 AM_CFLAGS="${AM_CFLAGS} -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow ${THREAD_CFLAGS} ${VISIBILITY_CFLAGS}"
    335 
    336 AC_SUBST(AM_CFLAGS)
    337 AC_SUBST(LTLDFLAGS)
    338 
    339 AC_CONFIG_FILES([libusb-1.0.pc])
    340 AC_CONFIG_FILES([Makefile])
    341 AC_CONFIG_FILES([libusb/Makefile])
    342 AC_CONFIG_FILES([examples/Makefile])
    343 AC_CONFIG_FILES([tests/Makefile])
    344 AC_CONFIG_FILES([doc/Makefile])
    345 AC_CONFIG_FILES([doc/doxygen.cfg])
    346 AC_OUTPUT
    347