dnl

dnl This file provides the following macros

dnl

dnl     LT_LIB_XTHREADS

dnl	AM_FUNC_VOID_SPRINTF

dnl

dnl This should be the canonical approach to check for XTHREADS.

dnl (see "man XtToolkitThreadInitialize")

AC_DEFUN([LT_LIB_XTHREADS],

[AC_REQUIRE([AC_PATH_X])

AC_CACHE_CHECK(whether libXt was compiled with -DXTHREADS, lt_cv_xthreads,

[lt_save_CFLAGS="$CFLAGS"

lt_save_CPPFLAGS="$CPPFLAGS"

lt_save_LIBS="$LIBS"

LIBS="$X_LIBS -lXt $X_PRE_LIBS -lX11 $X_EXTRA_LIBS $LIBS"

CFLAGS="$X_CFLAGS $CFLAGS"

CPPFLAGS="$X_CFLAGS $CPPFLAGS"

AC_TRY_RUN([

#include <X11/Intrinsic.h>

int main() {

Boolean brc;

brc=XtToolkitThreadInitialize();

if (True==brc)

  exit(0);

else

  exit(1);

}

],

lt_cv_xthreads=yes,

lt_cv_xthreads=no,

lt_cv_xthreads=dunno)

CFLAGS="$lt_save_CFLAGS"

CPPFLAGS="$lt_save_CPPFLAGS"

LIBS="$lt_save_LIBS"

])

if test $lt_cv_xthreads = dunno; then

  AC_MSG_WARN(Can't check for XTHREADS if cross-compiling. Assume XTHREADS)

  AC_DEFINE(XTHREADS,1,"Has XThreads")

  AC_DEFINE(XUSE_MTSAFE_API,1,"API is MTSAFE")

fi

if test $lt_cv_xthreads = yes; then

  AC_DEFINE(XTHREADS,1,"Has XThreads")

  AC_DEFINE(XUSE_MTSAFE_API,1,"API is MTSAFE")

fi

])

dnl This test is not very reliable probably ...

AC_DEFUN([AM_FUNC_VOID_SPRINTF],

[AC_CACHE_CHECK(whether sprintf returns void, ac_cv_func_void_sprintf,

[AC_TRY_RUN([#include <stdio.h>

int sprintf(); main() { exit(sprintf(".")); }],

  ac_cv_func_void_sprintf=no, ac_cv_func_void_sprintf=yes, ac_cv_func_void_sprintf=yes)])

if test $ac_cv_func_void_sprintf = no; then

  AC_DEFINE(VOID_SPRINTF,1,

  [Define if sprintf doesn't return the number of chars written])

fi

])

dnl

dnl End of special macros.

dnl