From eb5bed3f1bb84c8a46ad584c1451bf9b0ba043fa Mon Sep 17 00:00:00 2001
From: maier <maier@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Thu, 11 Jul 2013 14:39:34 +0000
Subject: [PATCH] Resolve a cache invalidation issue

git-svn-id: https://svn.dealii.org/trunk@29967 0785d39b-7218-0410-832d-ea1e28bc413d
---
 .../cmake/configure/configure_1_lapack.cmake  | 39 ++++++++++++-------
 1 file changed, 24 insertions(+), 15 deletions(-)

diff --git a/deal.II/cmake/configure/configure_1_lapack.cmake b/deal.II/cmake/configure/configure_1_lapack.cmake
index 00f92171e7..5dbd35c580 100644
--- a/deal.II/cmake/configure/configure_1_lapack.cmake
+++ b/deal.II/cmake/configure/configure_1_lapack.cmake
@@ -19,20 +19,6 @@
 MACRO(FEATURE_LAPACK_FIND_EXTERNAL var)
   FIND_PACKAGE(LAPACK)
 
-  #
-  # Well, in case of static archives we have to manually pick up the
-  # complete link interface. *sigh*
-  #
-  # Do this unconditionally for the most common case:
-  # TODO: Non-GNU setups...
-  #
-  IF(NOT m_lib MATCHES "-NOTFOUND")
-    LIST(APPEND LAPACK_LIBRARIES ${m_lib})
-  ENDIF()
-
-  ENABLE_IF_LINKS(LAPACK_LINKER_FLAGS "-lgfortran")
-  ENABLE_IF_LINKS(LAPACK_LINKER_FLAGS "-lquadmath")
-
   IF(LAPACK_FOUND)
     MARK_AS_ADVANCED(
       atlas_LIBRARY
@@ -85,6 +71,14 @@ MACRO(RESET_LAPACK_FUNCTIONS_CACHE)
   ENDFOREACH()
 ENDMACRO()
 
+#
+# Resolve a cache invalidation problem by searching for this flag
+# unconditionally. It is used in FEATURE_LAPACK_CONFIGURE_EXTERNAL
+# depending on cached variables.
+#
+ENABLE_IF_LINKS(_dummy "-lgfortran")
+ENABLE_IF_LINKS(_dummy "-lquadmath")
+
 
 MACRO(FEATURE_LAPACK_CONFIGURE_EXTERNAL)
   #
@@ -105,10 +99,25 @@ MACRO(FEATURE_LAPACK_CONFIGURE_EXTERNAL)
     LIST(APPEND LAPACK_LIBRARIES ${BLAS_LIBRARIES})
   ENDIF()
 
+
+  #
+  # Well, in case of static archives we have to manually pick up the
+  # complete link interface. *sigh*
+  #
+  # Do this unconditionally for the most common case:
+  # TODO: Non-GNU setups...
+  #
+  IF(NOT m_lib MATCHES "-NOTFOUND")
+    LIST(APPEND LAPACK_LIBRARIES ${m_lib})
+  ENDIF()
+
+  ENABLE_IF_LINKS(LAPACK_LINKER_FLAGS "-lgfortran")
+  ENABLE_IF_LINKS(LAPACK_LINKER_FLAGS "-lquadmath")
+
+
   ADD_FLAGS(CMAKE_SHARED_LINKER_FLAGS "${LAPACK_LINKER_FLAGS}")
   LIST(APPEND DEAL_II_EXTERNAL_LIBRARIES ${LAPACK_LIBRARIES})
 
-
   CHECK_FOR_LAPACK_FUNCTIONS()
 ENDMACRO()
 
-- 
2.39.5