*-darwin*)
AC_MSG_RESULT([Darwin/Mac OS X])
backend=darwin
- events=posix
- threads=posix
+ platform=posix
;;
*-haiku*)
AC_MSG_RESULT([Haiku])
backend=haiku
- events=posix
- threads=posix
+ platform=posix
;;
*-linux* | *-uclinux*)
dnl on Android Linux, some functions are in different places
;;
esac
backend=linux
- events=posix
- threads=posix
+ platform=posix
;;
*-netbsd*)
AC_MSG_RESULT([NetBSD])
backend=netbsd
- events=posix
- threads=posix
+ platform=posix
;;
*-openbsd*)
AC_MSG_RESULT([OpenBSD])
backend=openbsd
- events=posix
- threads=posix
+ platform=posix
;;
*-solaris*)
AC_MSG_RESULT([SunOS])
backend=sunos
- events=posix
- threads=posix
+ platform=posix
;;
*-cygwin*)
AC_MSG_RESULT([Windows (using Cygwin)])
backend=windows
- events=windows
- threads=posix
+ platform=windows
+ EXTRA_CFLAGS="-mwin32"
;;
*-mingw* | *msys*)
AC_MSG_RESULT([Windows])
backend=windows
- events=windows
- threads=windows
+ platform=windows
test "x$enable_shared" = xyes && create_import_lib=yes
- EXTRA_CFLAGS="-fno-omit-frame-pointer"
+ EXTRA_CFLAGS="-mwin32 -fno-omit-frame-pointer"
;;
*)
AC_MSG_RESULT([Null])
AC_MSG_WARN([The host being compiled for is not supported.])
AC_MSG_WARN([The library may compile but will not function in any useful manner.])
- backend="null"
- events=posix
- threads="posix"
+ backend=null
+ platform=posix
;;
esac
-if test "x$events" = xposix; then
- AC_DEFINE([EVENTS_POSIX], [1], [Define to 1 if using the POSIX events abstraction.])
+if test "x$platform" = xposix; then
+ AC_DEFINE([PLATFORM_POSIX], [1], [Define to 1 if compiling for a POSIX platform.])
AC_CHECK_TYPES([nfds_t], [], [], [[#include <poll.h>]])
AC_CHECK_FUNCS([pipe2])
-elif test "x$events" = xwindows; then
- AC_DEFINE([EVENTS_WINDOWS], [1], [Define to 1 if using the Windows events abstraction.])
-else
- AC_MSG_ERROR([Unknown events abstraction])
-fi
-
-if test "x$threads" = xposix; then
- AC_DEFINE([THREADS_POSIX], [1], [Define to 1 if using POSIX threads.])
dnl Some compilers do not support the '-pthread' option so check for it here
saved_CFLAGS="${CFLAGS}"
CFLAGS="-Wall -Werror -pthread"
AC_SEARCH_LIBS([pthread_create], [pthread],
[test "x$ac_cv_search_pthread_create" != "xnone required" && AC_SUBST(THREAD_LIBS, [-lpthread])],
[], [])
-elif test "x$threads" = xwindows; then
- AC_DEFINE([THREADS_WINDOWS], [1], [Define to 1 if using Windows threads.])
+elif test "x$platform" = xwindows; then
+ AC_DEFINE([PLATFORM_WINDOWS], [1], [Define to 1 if compiling for a Windows platform.])
else
- AC_MSG_ERROR([Unknown threads implementation])
+ AC_MSG_ERROR([Unknown platform])
fi
case $backend in
windows)
AC_CHECK_TYPES([struct timespec], [], [], [[#include <time.h>]])
AC_DEFINE([_WIN32_WINNT], [_WIN32_WINNT_VISTA], [Define to the oldest supported Windows version.])
- dnl Cygwin and MSYS compilers do not define _WIN32 as MinGW and MSVC do
- dnl simplify checks for Windows compilation by ensuring it is always defined
- EXTRA_CPPFLAGS="-D_WIN32"
LT_LDFLAGS="${LT_LDFLAGS} -avoid-version -Wl,--add-stdcall-alias"
;;
*)
dnl headers not available on all platforms but required on others
AC_CHECK_HEADERS([sys/time.h])
-dnl the clock_gettime() function needs certain clock IDs defined
-AC_CHECK_FUNCS([clock_gettime], [have_clock_gettime=yes], [have_clock_gettime=])
-if test "x$have_clock_gettime" = xyes; then
- AC_CHECK_DECL([CLOCK_REALTIME], [], [AC_MSG_ERROR([C library headers missing definition for CLOCK_REALTIME])], [[#include <time.h>]])
- AC_CHECK_DECL([CLOCK_MONOTONIC], [], [AC_MSG_ERROR([C library headers missing definition for CLOCK_MONOTONIC])], [[#include <time.h>]])
-elif test "x$backend" != xdarwin && test "x$backend" != xwindows; then
- AC_MSG_ERROR([clock_gettime() is required on this platform])
+if test "x$platform" = xposix; then
+ dnl the clock_gettime() function needs certain clock IDs defined
+ AC_CHECK_FUNCS([clock_gettime], [have_clock_gettime=yes], [have_clock_gettime=])
+ if test "x$have_clock_gettime" = xyes; then
+ AC_CHECK_DECL([CLOCK_MONOTONIC], [], [AC_MSG_ERROR([C library headers missing definition for CLOCK_MONOTONIC])], [[#include <time.h>]])
+ dnl use the monotonic clock for condition variable timed waits if possible
+ AC_CHECK_FUNCS([pthread_condattr_setclock], [need_clock_realtime=], [need_clock_realtime=yes])
+ if test "x$need_clock_realtime" = xyes; then
+ AC_CHECK_DECL([CLOCK_REALTIME], [], [AC_MSG_ERROR([C library headers missing definition for CLOCK_REALTIME])], [[#include <time.h>]])
+ fi
+ elif test "x$backend" != xdarwin; then
+ AC_MSG_ERROR([clock_gettime() is required on this platform])
+ fi
+fi
+
+dnl eventfd support
+if test "x$backend" = xlinux || test "x$backend" = xsunos; then
+ AC_ARG_ENABLE([eventfd],
+ [AS_HELP_STRING([--enable-eventfd], [use eventfd for signalling [default=auto]])],
+ [use_eventfd=$enableval],
+ [use_eventfd=auto])
+ if test "x$use_eventfd" != xno; then
+ AC_CHECK_HEADER([sys/eventfd.h], [eventfd_h=yes], [eventfd_h=])
+ if test "x$eventfd_h" = xyes; then
+ AC_CHECK_DECLS([EFD_NONBLOCK, EFD_CLOEXEC], [eventfd_h_ok=yes], [eventfd_h_ok=], [[#include <sys/eventfd.h>]])
+ if test "x$eventfd_h_ok" = xyes; then
+ AC_CHECK_FUNC([eventfd], [eventfd_ok=yes], [eventfd_ok=])
+ if test "x$eventfd_ok" = xyes; then
+ AC_DEFINE([HAVE_EVENTFD], [1], [Define to 1 if the system has eventfd functionality.])
+ elif test "x$use_eventfd" = xyes; then
+ AC_MSG_ERROR([eventfd() function not found; glibc 2.9+ required])
+ fi
+ elif test "x$use_eventfd" = xyes; then
+ AC_MSG_ERROR([eventfd header not usable; glibc 2.9+ required])
+ fi
+ elif test "x$use_eventfd" = xyes; then
+ AC_MSG_ERROR([eventfd header not available; glibc 2.9+ required])
+ fi
+ fi
+ AC_MSG_CHECKING([whether to use eventfd for signalling])
+ if test "x$use_eventfd" = xno; then
+ AC_MSG_RESULT([no (disabled by user)])
+ elif test "x$eventfd_h" != xyes; then
+ AC_MSG_RESULT([no (header not available)])
+ elif test "x$eventfd_h_ok" != xyes; then
+ AC_MSG_RESULT([no (header not usable)])
+ elif test "x$eventfd_ok" != xyes; then
+ AC_MSG_RESULT([no (functions not available)])
+ else
+ AC_MSG_RESULT([yes])
+ fi
fi
dnl timerfd support
AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != xno])
AM_CONDITIONAL([BUILD_TESTS], [test "x$build_tests" != xno])
AM_CONDITIONAL([CREATE_IMPORT_LIB], [test "x$create_import_lib" = xyes])
-AM_CONDITIONAL([EVENTS_POSIX], [test "x$events" = xposix])
-AM_CONDITIONAL([EVENTS_WINDOWS], [test "x$events" = xwindows])
AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = xyes])
AM_CONDITIONAL([OS_DARWIN], [test "x$backend" = xdarwin])
AM_CONDITIONAL([OS_HAIKU], [test "x$backend" = xhaiku])
AM_CONDITIONAL([OS_OPENBSD], [test "x$backend" = xopenbsd])
AM_CONDITIONAL([OS_SUNOS], [test "x$backend" = xsunos])
AM_CONDITIONAL([OS_WINDOWS], [test "x$backend" = xwindows])
-AM_CONDITIONAL([THREADS_POSIX], [test "x$threads" = xposix])
-AM_CONDITIONAL([THREADS_WINDOWS], [test "x$threads" = xwindows])
+AM_CONDITIONAL([PLATFORM_POSIX], [test "x$platform" = xposix])
+AM_CONDITIONAL([PLATFORM_WINDOWS], [test "x$platform" = xwindows])
AM_CONDITIONAL([USE_UDEV], [test "x$use_udev" = xyes])
dnl The -Wcast-function-type warning causes a flurry of warnings when compiling
projects / platform / upstream / libusb.git / blobdiff