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
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])
19 AC_INIT([libusb-1.0], [LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO[]LIBUSB_RC], [libusb-devel@lists.sourceforge.net], [libusb-1.0], [http://libusb.info])
20 AC_CONFIG_HEADERS([config.h])
21 AC_CONFIG_SRCDIR([libusb/core.c])
22 AC_CONFIG_MACRO_DIR([m4])
28 LT_LANG([Windows Resource])
30 dnl Library versioning
31 dnl These numbers should be tweaked on every release. Read carefully:
32 dnl http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
33 dnl http://sourceware.org/autobook/autobook/autobook_91.html
37 LT_LDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age} -no-undefined"
39 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
44 dnl check for -std=gnu11 compiler support (optional)
45 dnl note that we don't just check if the compiler accepts '-std=x11'
46 dnl but also that it supports the _Thread_local keyword because some compilers
47 dnl (e.g. gcc 4.8) accept the command line option but do not implement TLS
48 saved_CFLAGS="${CFLAGS}"
50 AC_MSG_CHECKING([if $CC supports -std=gnu11])
51 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([_Thread_local int x;], [x = 42;])],
56 if test "x$c_dialect" != xgnu; then
57 dnl fallback check for -std=c11 compiler support (required)
59 AC_MSG_CHECKING([if $CC supports -std=c11])
60 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([_Thread_local int x;], [x = 42;])],
61 [AC_MSG_RESULT([yes])],
63 AC_MSG_ERROR([compiler with C11 support is required to build libusb])])
66 CFLAGS="${saved_CFLAGS}"
68 AC_DEFINE([_GNU_SOURCE], [1], [Enable GNU extensions.])
69 AC_DEFINE([DEFAULT_VISIBILITY], [__attribute__ ((visibility ("default")))], [Define to the attribute for default visibility.])
73 AC_MSG_CHECKING([operating system])
76 AC_MSG_RESULT([Darwin/Mac OS X])
81 AC_MSG_RESULT([Haiku])
85 *-linux* | *-uclinux*)
86 dnl on Android Linux, some functions are in different places
89 AC_MSG_RESULT([Android Linux])
93 AC_MSG_RESULT([Linux])
100 AC_MSG_RESULT([NetBSD])
105 AC_MSG_RESULT([OpenBSD])
110 AC_MSG_RESULT([SunOS])
115 AC_MSG_RESULT([Windows (using Cygwin)])
118 EXTRA_CFLAGS="-mwin32"
121 AC_MSG_RESULT([Windows])
124 test "x$enable_shared" = xyes && create_import_lib=yes
125 EXTRA_CFLAGS="-mwin32 -fno-omit-frame-pointer"
128 AC_MSG_RESULT([Null])
129 AC_MSG_WARN([The host being compiled for is not supported.])
130 AC_MSG_WARN([The library may compile but will not function in any useful manner.])
136 if test "x$platform" = xposix; then
137 AC_DEFINE([PLATFORM_POSIX], [1], [Define to 1 if compiling for a POSIX platform.])
138 AC_CHECK_TYPES([nfds_t], [], [], [[#include <poll.h>]])
139 AC_CHECK_FUNCS([pipe2])
140 dnl Some compilers do not support the '-pthread' option so check for it here
141 saved_CFLAGS="${CFLAGS}"
142 CFLAGS="-Wall -Werror -pthread"
143 AC_MSG_CHECKING([if $CC recognizes -pthread])
144 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])],
145 [AC_MSG_RESULT([yes])
146 AC_SUBST(THREAD_CFLAGS, [-pthread])],
147 [AC_MSG_RESULT([no])])
148 CFLAGS="${saved_CFLAGS}"
149 dnl Android Linux and Darwin provide pthread functions directly in libc
150 dnl glibc also provides some pthread functions directly, so search for a thread-specific function
151 AC_SEARCH_LIBS([pthread_create], [pthread],
152 [test "x$ac_cv_search_pthread_create" != "xnone required" && AC_SUBST(THREAD_LIBS, [-lpthread])],
154 elif test "x$platform" = xwindows; then
155 AC_DEFINE([PLATFORM_WINDOWS], [1], [Define to 1 if compiling for a Windows platform.])
157 AC_MSG_ERROR([Unknown platform])
162 AC_CHECK_FUNCS([pthread_threadid_np])
163 LIBS="${LIBS} -lobjc -Wl,-framework,IOKit -Wl,-framework,CoreFoundation"
169 AC_SEARCH_LIBS([clock_gettime], [rt], [], [], [])
170 AC_CHECK_FUNCS([pthread_setname_np])
171 AC_ARG_ENABLE([udev],
172 [AC_HELP_STRING([--enable-udev], [use udev for device enumeration and hotplug support (recommended) [default=yes]])],
173 [use_udev=$enableval], [use_udev=yes])
174 if test "x$use_udev" = xyes; then
175 dnl system has udev. use it or fail!
176 AC_CHECK_HEADER([libudev.h], [], [AC_MSG_ERROR([udev support requested but libudev header not installed])])
177 AC_CHECK_LIB([udev], [udev_new], [], [AC_MSG_ERROR([udev support requested but libudev not installed])])
179 AC_CHECK_HEADERS([asm/types.h])
180 AC_CHECK_HEADER([linux/netlink.h], [], [AC_MSG_ERROR([Linux netlink header not found])])
181 AC_CHECK_HEADER([sys/socket.h], [], [AC_MSG_ERROR([Linux socket header not found])])
185 LIBS="${LIBS} -ldevinfo"
188 AC_CHECK_TYPES([struct timespec], [], [], [[#include <time.h>]])
189 AC_DEFINE([_WIN32_WINNT], [_WIN32_WINNT_VISTA], [Define to the oldest supported Windows version.])
190 LT_LDFLAGS="${LT_LDFLAGS} -avoid-version -Wl,--add-stdcall-alias"
193 dnl no special handling required
197 dnl headers not available on all platforms but required on others
198 AC_CHECK_HEADERS([sys/time.h])
200 if test "x$platform" = xposix; then
201 dnl the clock_gettime() function needs certain clock IDs defined
202 AC_CHECK_FUNCS([clock_gettime], [have_clock_gettime=yes], [have_clock_gettime=])
203 if test "x$have_clock_gettime" = xyes; then
204 AC_CHECK_DECL([CLOCK_MONOTONIC], [], [AC_MSG_ERROR([C library headers missing definition for CLOCK_MONOTONIC])], [[#include <time.h>]])
205 dnl use the monotonic clock for condition variable timed waits if possible
206 AC_CHECK_FUNCS([pthread_condattr_setclock], [need_clock_realtime=], [need_clock_realtime=yes])
207 if test "x$need_clock_realtime" = xyes; then
208 AC_CHECK_DECL([CLOCK_REALTIME], [], [AC_MSG_ERROR([C library headers missing definition for CLOCK_REALTIME])], [[#include <time.h>]])
210 elif test "x$backend" != xdarwin; then
211 AC_MSG_ERROR([clock_gettime() is required on this platform])
216 if test "x$backend" = xlinux || test "x$backend" = xsunos; then
217 AC_ARG_ENABLE([eventfd],
218 [AS_HELP_STRING([--enable-eventfd], [use eventfd for signalling [default=auto]])],
219 [use_eventfd=$enableval],
221 if test "x$use_eventfd" != xno; then
222 AC_CHECK_HEADER([sys/eventfd.h], [eventfd_h=yes], [eventfd_h=])
223 if test "x$eventfd_h" = xyes; then
224 AC_CHECK_DECLS([EFD_NONBLOCK, EFD_CLOEXEC], [eventfd_h_ok=yes], [eventfd_h_ok=], [[#include <sys/eventfd.h>]])
225 if test "x$eventfd_h_ok" = xyes; then
226 AC_CHECK_FUNC([eventfd], [eventfd_ok=yes], [eventfd_ok=])
227 if test "x$eventfd_ok" = xyes; then
228 AC_DEFINE([HAVE_EVENTFD], [1], [Define to 1 if the system has eventfd functionality.])
229 elif test "x$use_eventfd" = xyes; then
230 AC_MSG_ERROR([eventfd() function not found; glibc 2.9+ required])
232 elif test "x$use_eventfd" = xyes; then
233 AC_MSG_ERROR([eventfd header not usable; glibc 2.9+ required])
235 elif test "x$use_eventfd" = xyes; then
236 AC_MSG_ERROR([eventfd header not available; glibc 2.9+ required])
239 AC_MSG_CHECKING([whether to use eventfd for signalling])
240 if test "x$use_eventfd" = xno; then
241 AC_MSG_RESULT([no (disabled by user)])
242 elif test "x$eventfd_h" != xyes; then
243 AC_MSG_RESULT([no (header not available)])
244 elif test "x$eventfd_h_ok" != xyes; then
245 AC_MSG_RESULT([no (header not usable)])
246 elif test "x$eventfd_ok" != xyes; then
247 AC_MSG_RESULT([no (functions not available)])
254 if test "x$backend" = xlinux || test "x$backend" = xsunos; then
255 AC_ARG_ENABLE([timerfd],
256 [AS_HELP_STRING([--enable-timerfd], [use timerfd for timing [default=auto]])],
257 [use_timerfd=$enableval],
259 if test "x$use_timerfd" != xno; then
260 AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=yes], [timerfd_h=])
261 if test "x$timerfd_h" = xyes; then
262 AC_CHECK_DECLS([TFD_NONBLOCK, TFD_CLOEXEC], [timerfd_h_ok=yes], [timerfd_h_ok=], [[#include <sys/timerfd.h>]])
263 if test "x$timerfd_h_ok" = xyes; then
264 AC_CHECK_FUNC([timerfd_create], [timerfd_ok=yes], [timerfd_ok=])
265 if test "x$timerfd_ok" = xyes; then
266 AC_DEFINE([HAVE_TIMERFD], [1], [Define to 1 if the system has timerfd functionality.])
267 elif test "x$use_timerfd" = xyes; then
268 AC_MSG_ERROR([timerfd_create() function not found; glibc 2.9+ required])
270 elif test "x$use_timerfd" = xyes; then
271 AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
273 elif test "x$use_timerfd" = xyes; then
274 AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
277 AC_MSG_CHECKING([whether to use timerfd for timing])
278 if test "x$use_timerfd" = xno; then
279 AC_MSG_RESULT([no (disabled by user)])
280 elif test "x$timerfd_h" != xyes; then
281 AC_MSG_RESULT([no (header not available)])
282 elif test "x$timerfd_h_ok" != xyes; then
283 AC_MSG_RESULT([no (header not usable)])
284 elif test "x$timerfd_ok" != xyes; then
285 AC_MSG_RESULT([no (functions not available)])
293 [AS_HELP_STRING([--disable-log], [disable all logging])],
294 [log_enabled=$enableval],
296 if test "x$log_enabled" != xno; then
297 AC_DEFINE([ENABLE_LOGGING], [1], [Define to 1 to enable message logging.])
300 AC_ARG_ENABLE([debug-log],
301 [AS_HELP_STRING([--enable-debug-log], [start with debug message logging enabled [default=no]])],
302 [debug_log_enabled=$enableval],
303 [debug_log_enabled=no])
304 if test "x$debug_log_enabled" != xno; then
305 AC_DEFINE([ENABLE_DEBUG_LOGGING], [1], [Define to 1 to start with debug message logging enabled.])
308 AC_ARG_ENABLE([system-log],
309 [AS_HELP_STRING([--enable-system-log], [output logging messages to the systemwide log, if supported by the OS [default=no]])],
310 [system_log_enabled=$enableval],
311 [system_log_enabled=no])
312 if test "x$system_log_enabled" != xno; then
313 AC_DEFINE([USE_SYSTEM_LOGGING_FACILITY], [1], [Define to 1 to output logging messages to the systemwide log.])
314 if test "x$backend" != xwindows && test "x$is_android_linux" != xyes; then
315 dnl Check if syslog is available in standard C library
316 AC_CHECK_HEADER([syslog.h], [syslog_h=yes], [syslog_h=])
317 if test "x$syslog_h" = xyes; then
318 AC_CHECK_FUNCS([syslog])
324 AC_ARG_ENABLE([examples-build],
325 [AS_HELP_STRING([--enable-examples-build], [build example applications [default=no]])],
326 [build_examples=$enableval],
330 AC_ARG_ENABLE([tests-build],
331 [AS_HELP_STRING([--enable-tests-build], [build test applications [default=no]])],
332 [build_tests=$enableval],
335 AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != xno])
336 AM_CONDITIONAL([BUILD_TESTS], [test "x$build_tests" != xno])
337 AM_CONDITIONAL([CREATE_IMPORT_LIB], [test "x$create_import_lib" = xyes])
338 AM_CONDITIONAL([OS_DARWIN], [test "x$backend" = xdarwin])
339 AM_CONDITIONAL([OS_HAIKU], [test "x$backend" = xhaiku])
340 AM_CONDITIONAL([OS_LINUX], [test "x$backend" = xlinux])
341 AM_CONDITIONAL([OS_NETBSD], [test "x$backend" = xnetbsd])
342 AM_CONDITIONAL([OS_NULL], [test "x$backend" = xnull])
343 AM_CONDITIONAL([OS_OPENBSD], [test "x$backend" = xopenbsd])
344 AM_CONDITIONAL([OS_SUNOS], [test "x$backend" = xsunos])
345 AM_CONDITIONAL([OS_WINDOWS], [test "x$backend" = xwindows])
346 AM_CONDITIONAL([PLATFORM_POSIX], [test "x$platform" = xposix])
347 AM_CONDITIONAL([PLATFORM_WINDOWS], [test "x$platform" = xwindows])
348 AM_CONDITIONAL([USE_UDEV], [test "x$use_udev" = xyes])
350 dnl The -Wcast-function-type warning causes a flurry of warnings when compiling
351 dnl Windows with GCC 8 or later because of dynamically loaded functions
352 if test "x$backend" = xwindows; then
353 saved_CFLAGS="${CFLAGS}"
354 CFLAGS="-Werror -Wcast-function-type"
355 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])],
356 [EXTRA_CFLAGS="${EXTRA_CFLAGS} -Wno-cast-function-type"],
358 CFLAGS="${saved_CFLAGS}"
361 SHARED_CFLAGS="-Wall -Wextra -Wshadow -Wunused -Wwrite-strings -Werror=format-security -Werror=implicit-function-declaration -Werror=implicit-int -Werror=init-self -Werror=missing-prototypes -Werror=strict-prototypes -Werror=undef -Werror=uninitialized"
363 AM_CPPFLAGS="${EXTRA_CPPFLAGS}"
364 AC_SUBST(AM_CPPFLAGS)
366 AM_CFLAGS="-std=${c_dialect}11 ${EXTRA_CFLAGS} ${SHARED_CFLAGS}"
369 AM_CXXFLAGS="-std=${c_dialect}++11 ${EXTRA_CFLAGS} ${SHARED_CFLAGS} -Wmissing-declarations"
370 AC_SUBST(AM_CXXFLAGS)
374 dnl set name of html output directory for doxygen
375 AC_SUBST(DOXYGEN_HTMLDIR, [api-1.0])
377 AC_CONFIG_FILES([libusb-1.0.pc])
378 AC_CONFIG_FILES([Makefile])
379 AC_CONFIG_FILES([libusb/Makefile])
380 AC_CONFIG_FILES([examples/Makefile])
381 AC_CONFIG_FILES([tests/Makefile])
382 AC_CONFIG_FILES([doc/Makefile])
383 AC_CONFIG_FILES([doc/doxygen.cfg])