Remove a AC_MSG_CHECKING not paired with any AC_MSG_RESULT and thus producing ugly...

[simgrid.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index ca8d990..ee7a572 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -83,10 +83,7 @@ dnl #  1. determine possibilities
 dnl #
 
 dnl #  check for MCSC method
-AC_MSG_CHECKING(on top of what can we build the contexts)
-AC_CHECK_HEADER(ucontext.h,,, [#include <sys/types.h>])
-AC_CHECK_FUNCS(makecontext swapcontext getcontext setcontext)
-AC_CHECK_MCSC(mcsc=yes, mcsc=no)
+AC_CHECK_MCSC(mcsc=yes, mcsc=no) 
 
 dnl #  check for pthread method
 AC_CHECK_HEADERS([pthread.h])
@@ -121,12 +118,17 @@ AC_ARG_WITH(pthread, [  --with-pthread   Use pthread instead of ucontext.],with_
 AC_ARG_WITH(context,
   [  --with-context=[ucontext/pthread]   Use either (System V) swapcontext or pthread [[default=auto]].],,
   with_context=auto)
+
+if test "x$with_context$mcsc" = "xucontextno" ; then 
+  AC_MSG_ERROR([--with-context=ucontext specified but ucontext unusable. Relaunch configure without this argument.], 77)
+fi
+
 case $with_context in
  ucontext) ;;
  pthread) ;;
  windows) ;;
  auto) with_context=ucontext;;
- *) AC_MSG_ERROR("--with-context must be either ucontext or pthread") ;;
+ *) AC_MSG_ERROR([--with-context must be either ucontext or pthread]) ;;
 esac
 
 if test "x$with_context" = "xucontext" ; then
@@ -408,7 +410,7 @@ Configuration of package \`${PACKAGE}' (version ${VERSION}) on $gras_arch_name (
 if test -e CVS && test x$USE_MAINTAINER_MODE != xyes ; then
   echo "WARNING:"
   echo "WARNING: you seem to compile the CVS version without the maintainer mode."
-  echo "WARNING: This is not really supported, so you should configure SimGrid like:"
+  echo "WARNING: You may want to enable this by specifying:"
   echo "WARNING:"
   echo "WARNING: ./configure --enable-maintainer-mode  $ac_configure_args"
   echo "WARNING:"