From 634530fd35202c915142d3724d021fa5e4d7aa2c Mon Sep 17 00:00:00 2001
From: kanschat <kanschat@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Tue, 4 Sep 2007 04:19:05 +0000
Subject: [PATCH] new test for BLAS

git-svn-id: https://svn.dealii.org/trunk@15114 0785d39b-7218-0410-832d-ea1e28bc413d
---
 deal.II/configure    | 104 ++++++++++++++++++++++++++++++++++++++++++-
 deal.II/configure.in |   7 +++
 2 files changed, 110 insertions(+), 1 deletion(-)

diff --git a/deal.II/configure b/deal.II/configure
index 0a78a1ae2f..77e732dc7f 100755
--- a/deal.II/configure
+++ b/deal.II/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 15013 .
+# From configure.in Revision: 15082 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.59 for deal.II 6.0.pre.
 #
@@ -12131,6 +12131,108 @@ fi
 
 fi;
 
+if test "x$with_ blas" != "x" -a "x$with_blas" != "xno" ; then
+  echo "$as_me:$LINENO: checking for daxpy_" >&5
+echo $ECHO_N "checking for daxpy_... $ECHO_C" >&6
+if test "${ac_cv_func_daxpy_+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define daxpy_ to an innocuous variant, in case <limits.h> declares daxpy_.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define daxpy_ innocuous_daxpy_
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char daxpy_ (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef daxpy_
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char daxpy_ ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_daxpy_) || defined (__stub___daxpy_)
+choke me
+#else
+char (*f) () = daxpy_;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != daxpy_;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_daxpy_=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_daxpy_=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_daxpy_" >&5
+echo "${ECHO_T}$ac_cv_func_daxpy_" >&6
+if test $ac_cv_func_daxpy_ = yes; then
+  :
+else
+  { { echo "$as_me:$LINENO: error: BLAS library not installed correctly" >&5
+echo "$as_me: error: BLAS library not installed correctly" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+fi
+
+
 
 
 
diff --git a/deal.II/configure.in b/deal.II/configure.in
index e1284349db..18cd1f0af4 100644
--- a/deal.II/configure.in
+++ b/deal.II/configure.in
@@ -525,6 +525,13 @@ AC_ARG_WITH(lapack,
                           argument is given, use -llapack. Default is not to
                           use -llapack.],
   DEAL_II_WITH_LAPACK($withval))
+
+dnl Finally check if BLAS is really there. We have to do it this way, since
+dnl MAC OSX links BLAS functions in a different way
+if test "x$with_ blas" != "x" -a "x$with_blas" != "xno" ; then
+  AC_CHECK_FUNC(daxpy_,,[AC_MSG_ERROR([BLAS library not installed correctly])])
+fi
+
 AC_CHECK_FUNCS([dgemv_ sgemv_ dgeev_ sgeev_ dgeevx_ sgeevx_ dgesvd_ sgesvd_])
 AC_CHECK_FUNCS([dgetrf_ sgetrf_ dgetrs_ sgetrs_ dstev_ sstev_])
 
-- 
2.39.5