* Check that sem_timedwait is available (since it's not on mac osx)

[simgrid.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 1fd4950..1f8e726 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,3 +1,8 @@
+dnl Copyright (C) 2004-2007. The SimGrid team. All rights reserved.
+
+dnl This file is part of the SimGrid project. This is free software:
+dnl You can redistribute and/or modify it under the terms of the
+dnl GNU LGPL (v2.1) licence.
 
 ######################
 ## Setup the autotools
@@ -86,20 +91,37 @@ dnl #
 dnl #  1. determine possibilities
 dnl #
 
-dnl #  check for MCSC method
+dnl #  check for MCSC method (ucontexts)
 AC_CHECK_MCSC(mcsc=yes, mcsc=no) 
 
 dnl #  check for pthread method
 AC_CHECK_HEADERS([pthread.h])
 AC_CHECK_LIB(pthread,pthread_create,pthread=yes, pthread=no)
 
+if test x$pthread = xyes ; then
+  AC_CHECK_LIB(pthread, sem_timedwait, HAVE_SEM_TIMEDWAIT=yes, HAVE_SEM_TIMEDWAIT=no)
+  if test ${HAVE_SEM_TIMEDWAIT} = yes ; then
+     AC_MSG_CHECKING(if sem_timedwait is compilable)
+     AC_TRY_COMPILE([#include <semaphore.h>],
+                   [sem_t *s; const struct timespec * t; sem_timedwait(s, t);], HAVE_SEM_TIMEDWAIT=yes, HAVE_SEM_TIMEDWAIT=no)
+     if test ${HAVE_SEM_TIMEDWAIT} = yes ; then
+        AC_DEFINE([HAVE_SEM_TIMEDWAIT],1,[Define if the sem_timedwait is avaible or not (part of XPG6 standard only)])
+        AC_MSG_RESULT(yes)
+     else
+       AC_MSG_RESULT(no)
+     fi
+  fi
+fi
+
 dnl #
 dnl #  2. make a general decision
 dnl #
 
 if test ".$mcsc" = .yes; then
+   # ucontext found
    mcsc=yes
 elif test ".$pthread" = .yes; then
+   # ucontext not found, but pthread found
    pthread=yes
 else
     ac_header=windows.h
@@ -154,13 +176,11 @@ if test "x$with_context" = "xucontext" ; then
   fi
 fi
 
-if test "x$with_context" = "xpthreads"; then
-  with_context=pthread
-fi
 if test "x$with_context" = "xpthread"; then
   AC_CHECK_HEADERS([pthread.h])
-  AC_CHECK_LIB(pthread,pthread_create,,
-    [AC_MSG_ERROR([[Cannot find pthreads (try --with-context=ucontext if you haven't already tried).]])])
+  if test x$pthread != xyes ; then
+    AC_MSG_ERROR([[Cannot find pthreads (try --with-context=ucontext if you haven't already tried).]])
+  fi
   AC_DEFINE([CONTEXT_THREADS],1,[Define if xbt contexts are based on our threads implementation or not])
   AC_MSG_RESULT(You have pthreads and requested for them. Fine.)
 fi
@@ -358,17 +378,15 @@ SG_CONFIGURE_PART(Check for Java bindings...)
 # Java cruft
 AC_ARG_ENABLE(java,
              AS_HELP_STRING([--disable-java], [To not compile the Java bindings even if the tools are found]),
-             want_java=$enableval,want_java=yes)
-if test "x$want_java" != "xyes" ; then
-   AC_MSG_CHECKING(whether to compile java bindings)
-   AC_MSG_RESULT(disabled by user)
+             disable_java=$enableval,disable_java=yes)
+AC_MSG_CHECKING(whether to compile java bindings)
+if test "x$disable_java" != "xyes" ; then
    use_java="disabled by user"
 else
   AC_PATH_PROG([JAVAC], [javac], `which javac`)
   AC_PATH_PROG([JAVA],  [java] , `which java`)
   AC_PATH_PROG([JAR],   [jar]  , `which jar`)
   AC_CHECK_HEADERS(jni.h)
-  AC_MSG_CHECKING(whether to compile java bindings)
   if test -n "$JAVAC"   \
      && test -n "$JAVA" \
      && test -n "$JAR"  \
@@ -378,8 +396,8 @@ else
   else   
      use_java="no"
   fi
-  AC_MSG_RESULT($use_java)
 fi
+AC_MSG_RESULT($use_java)
 AM_CONDITIONAL(HAVE_JAVA,test "x$use_java" = "xyes")
 
 #####################