dnl
dnl Non-failing checks for functions, headers, libraries, etc go here
dnl

CAIRO_BEGINEND_DECLS

dnl ====================================================================
dnl Feature checks
dnl ====================================================================

AM_CONDITIONAL(CROSS_COMPILING, test "x$cross_compiling" = "xyes")
CAIRO_BIGENDIAN
CAIRO_CHECK_NATIVE_ATOMIC_PRIMITIVES
CAIRO_CHECK_ATOMIC_OP_NEEDS_MEMORY_BARRIER

AC_MSG_CHECKING([for native Win32])
case "$host" in
  *-*-mingw*)
    cairo_os_win32=yes
    ;;
  *)
    cairo_os_win32=no
    ;;
esac
AC_MSG_RESULT([$cairo_os_win32])
AM_CONDITIONAL(OS_WIN32, test "$cairo_os_win32" = "yes")

AC_MSG_CHECKING([for Sun Solaris (non-POSIX ctime_r)])
case "$host" in
    *-*-solaris*)
	CFLAGS="$CFLAGS -D_POSIX_PTHREAD_SEMANTICS"
	solaris_posix_pthread=yes
	;;
    *)
	solaris_posix_pthread=no
	;;
esac
AC_MSG_RESULT([$solaris_posix_pthread])

dnl ====================================================================
dnl Library checks
dnl ====================================================================

AC_CHECK_LIBM
LIBS="$LIBS $LIBM"

AC_CHECK_LIB(rt, sched_yield, [RT_LIBS=-lrt], [RT_LIBS=])
CAIROPERF_LIBS=$RT_LIBS
AC_SUBST(CAIROPERF_LIBS)

dnl ====================================================================
dnl Header/function checks
dnl ====================================================================

dnl Checks for precise integer types
AC_CHECK_HEADERS([stdint.h inttypes.h sys/int_types.h])
AC_CHECK_TYPES([uint64_t, uint128_t])

dnl Check for socket support for any2ppm daemon
AC_CHECK_HEADERS([fcntl.h unistd.h signal.h sys/stat.h sys/socket.h sys/poll.h sys/un.h])

dnl check for CPU affinity support
AC_CHECK_HEADERS([sched.h],
	[AC_CHECK_FUNCS([sched_getaffinity])])

dnl check for GNU-extensions to fenv
AC_CHECK_HEADER(fenv.h,
	[AC_CHECK_FUNCS(feenableexcept fedisableexcept)])

dnl check for misc headers and functions
AC_CHECK_HEADERS([libgen.h byteswap.h signal.h setjmp.h])
AC_CHECK_FUNCS([vasnprintf link ctime_r drand48 flockfile])

dnl check for win32 headers (this detects mingw as well)
AC_CHECK_HEADERS([windows.h], have_windows=yes, have_windows=no)