configure.in

dnl
dnl Configuration things for affyio
dnl


AC_INIT("DESCRIPTION")

dnl
dnl Are things (still) the same ?
dnl (taken from the 'writing R extensions manual')


R_ZLIB

AC_LANG(C)


AC_CHECK_LIB(pthread, pthread_create)

AC_TRY_LINK_FUNC(pthread_create, [use_pthreads=yes], [use_pthreads=no])

AC_MSG_CHECKING([if we can use pthreads])
AC_MSG_RESULT($use_pthreads)

AC_MSG_CHECKING([if PTHREAD_STACK_MIN is defined])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
	#include <pthread.h>
	#include <limits.h>

      int main () {size_t stacksize = PTHREAD_STACK_MIN + 0x4000;
}     	  
    ])],[use_pthread_stack_min=yes], [use_pthread_stack_min=no])
AC_MSG_RESULT($use_pthread_stack_min)

if test "x$use_pthread_stack_min" = xno; then
	use_pthreads=no
fi


AC_ARG_ENABLE([threading],
	AS_HELP_STRING([--disable-threading],[Disable threading]))


AS_IF([test "x$enable_threading" != "xno" ],[
	    if test "x${use_pthreads}" = "xno"; then
	       AC_MSG_NOTICE(------------------------------------------)
	       AC_MSG_NOTICE( Unable to find pthreads on this system.  )
	       AC_MSG_NOTICE( Building a single-threaded version.      )
	       AC_MSG_NOTICE(------------------------------------------)
	    fi


	    if test "x${use_pthreads}" = "xyes"; then
  	       AC_MSG_NOTICE(Enabling threading for affyio)
  	       AC_DEFINE(USE_PTHREADS, 1)
	    fi
	    ],
	    [
	    AC_MSG_NOTICE(Disabling threading for affyio)
	    ])









AC_OUTPUT(src/Makevars)