Fix bug #760: complete Eigen's lapack interface with default Lapack for SPQR if there is no fortran compiler.

1 files changed, 39 insertions, 26 deletions

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index e1bff179d..62cbedae7 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -13,11 +13,26 @@ if(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/split_test_helper.h)
   endforeach()
 endif()
 
+# check if we have a Fortran compiler
+include("../cmake/language_support.cmake")
+
+workaround_9220(Fortran EIGEN_Fortran_COMPILER_WORKS)
+
+if(EIGEN_Fortran_COMPILER_WORKS)
+  enable_language(Fortran OPTIONAL)
+  if(NOT CMAKE_Fortran_COMPILER)
+    set(EIGEN_Fortran_COMPILER_WORKS OFF)
+  endif()
+endif()
+
+if(NOT EIGEN_Fortran_COMPILER_WORKS)
+  # search for a default Lapack library to complete Eigen's one
+  find_package(LAPACK)
+endif()
+
 # configure blas/lapack (use Eigen's ones)
-set(BLAS_FOUND TRUE)
-set(LAPACK_FOUND TRUE)
-set(BLAS_LIBRARIES eigen_blas)
-set(LAPACK_LIBRARIES eigen_lapack)
+set(EIGEN_BLAS_LIBRARIES eigen_blas)
+set(EIGEN_LAPACK_LIBRARIES eigen_lapack)
 
 set(EIGEN_TEST_MATRIX_DIR "" CACHE STRING "Enable testing of realword sparse matrices contained in the specified path")
 if(EIGEN_TEST_MATRIX_DIR)
@@ -32,33 +47,33 @@ endif(EIGEN_TEST_MATRIX_DIR)
 set(SPARSE_LIBS " ")
 
 find_package(Cholmod)
-if(CHOLMOD_FOUND AND BLAS_FOUND AND LAPACK_FOUND)
+if(CHOLMOD_FOUND)
   add_definitions("-DEIGEN_CHOLMOD_SUPPORT")
   include_directories(${CHOLMOD_INCLUDES})
-  set(SPARSE_LIBS ${SPARSE_LIBS} ${CHOLMOD_LIBRARIES} ${BLAS_LIBRARIES} ${LAPACK_LIBRARIES})
-  set(CHOLMOD_ALL_LIBS  ${CHOLMOD_LIBRARIES} ${BLAS_LIBRARIES} ${LAPACK_LIBRARIES})
+  set(SPARSE_LIBS ${SPARSE_LIBS} ${CHOLMOD_LIBRARIES} ${EIGEN_BLAS_LIBRARIES} ${EIGEN_LAPACK_LIBRARIES})
+  set(CHOLMOD_ALL_LIBS  ${CHOLMOD_LIBRARIES} ${EIGEN_BLAS_LIBRARIES} ${EIGEN_LAPACK_LIBRARIES})
   ei_add_property(EIGEN_TESTED_BACKENDS "Cholmod, ")
 else()
   ei_add_property(EIGEN_MISSING_BACKENDS "Cholmod, ")
 endif()
 
 find_package(Umfpack)
-if(UMFPACK_FOUND AND BLAS_FOUND)
+if(UMFPACK_FOUND)
   add_definitions("-DEIGEN_UMFPACK_SUPPORT")
   include_directories(${UMFPACK_INCLUDES})
-  set(SPARSE_LIBS ${SPARSE_LIBS} ${UMFPACK_LIBRARIES} ${BLAS_LIBRARIES})
-  set(UMFPACK_ALL_LIBS ${UMFPACK_LIBRARIES} ${BLAS_LIBRARIES})
+  set(SPARSE_LIBS ${SPARSE_LIBS} ${UMFPACK_LIBRARIES} ${EIGEN_BLAS_LIBRARIES})
+  set(UMFPACK_ALL_LIBS ${UMFPACK_LIBRARIES} ${EIGEN_BLAS_LIBRARIES})
   ei_add_property(EIGEN_TESTED_BACKENDS "UmfPack, ")
 else()
   ei_add_property(EIGEN_MISSING_BACKENDS "UmfPack, ")
 endif()
 
 find_package(SuperLU)
-if(SUPERLU_FOUND AND BLAS_FOUND)
+if(SUPERLU_FOUND)
   add_definitions("-DEIGEN_SUPERLU_SUPPORT")
   include_directories(${SUPERLU_INCLUDES})
-  set(SPARSE_LIBS ${SPARSE_LIBS} ${SUPERLU_LIBRARIES} ${BLAS_LIBRARIES})
-  set(SUPERLU_ALL_LIBS ${SUPERLU_LIBRARIES} ${BLAS_LIBRARIES})
+  set(SPARSE_LIBS ${SPARSE_LIBS} ${SUPERLU_LIBRARIES} ${EIGEN_BLAS_LIBRARIES})
+  set(SUPERLU_ALL_LIBS ${SUPERLU_LIBRARIES} ${EIGEN_BLAS_LIBRARIES})
   ei_add_property(EIGEN_TESTED_BACKENDS  "SuperLU, ")
 else()
   ei_add_property(EIGEN_MISSING_BACKENDS  "SuperLU, ")
@@ -68,7 +83,7 @@ endif()
 find_package(Pastix)
 find_package(Scotch)
 find_package(Metis)
-if(PASTIX_FOUND AND BLAS_FOUND)
+if(PASTIX_FOUND)
   add_definitions("-DEIGEN_PASTIX_SUPPORT")
   include_directories(${PASTIX_INCLUDES})
   if(SCOTCH_FOUND)
@@ -80,8 +95,8 @@ if(PASTIX_FOUND AND BLAS_FOUND)
   else(SCOTCH_FOUND)
     ei_add_property(EIGEN_MISSING_BACKENDS  "PaStiX, ")
   endif(SCOTCH_FOUND)
-  set(SPARSE_LIBS ${SPARSE_LIBS} ${PASTIX_LIBRARIES} ${ORDERING_LIBRARIES} ${BLAS_LIBRARIES})
-  set(PASTIX_ALL_LIBS ${PASTIX_LIBRARIES} ${BLAS_LIBRARIES})
+  set(SPARSE_LIBS ${SPARSE_LIBS} ${PASTIX_LIBRARIES} ${ORDERING_LIBRARIES} ${EIGEN_BLAS_LIBRARIES})
+  set(PASTIX_ALL_LIBS ${PASTIX_LIBRARIES} ${EIGEN_BLAS_LIBRARIES})
   ei_add_property(EIGEN_TESTED_BACKENDS  "PaStiX, ")
 else()
   ei_add_property(EIGEN_MISSING_BACKENDS  "PaStiX, ")
@@ -96,16 +111,14 @@ else()
 endif()
 
 find_package(SPQR)
-if(SPQR_FOUND AND BLAS_FOUND AND LAPACK_FOUND)
-  if(CHOLMOD_FOUND)
-    add_definitions("-DEIGEN_SPQR_SUPPORT")
-    include_directories(${SPQR_INCLUDES})
-    set(SPQR_ALL_LIBS ${SPQR_LIBRARIES} ${CHOLMOD_LIBRARIES} ${LAPACK_LIBRARIES} ${BLAS_LIBRARIES})
-    set(SPARSE_LIBS ${SPARSE_LIBS} ${SPQR_ALL_LIBS})
-    ei_add_property(EIGEN_TESTED_BACKENDS "SPQR, ")
-  else(CHOLMOD_FOUND)
-    ei_add_property(EIGEN_MISSING_BACKENDS "SPQR, ")
-  endif(CHOLMOD_FOUND)
+if(SPQR_FOUND AND CHOLMOD_FOUND AND (EIGEN_Fortran_COMPILER_WORKS OR LAPACK_FOUND) )
+  add_definitions("-DEIGEN_SPQR_SUPPORT")
+  include_directories(${SPQR_INCLUDES})
+  set(SPQR_ALL_LIBS ${SPQR_LIBRARIES} ${CHOLMOD_LIBRARIES} ${EIGEN_LAPACK_LIBRARIES} ${EIGEN_BLAS_LIBRARIES} ${LAPACK_LIBRARIES})
+  set(SPARSE_LIBS ${SPARSE_LIBS} ${SPQR_ALL_LIBS})
+  ei_add_property(EIGEN_TESTED_BACKENDS "SPQR, ")
+else()
+  ei_add_property(EIGEN_MISSING_BACKENDS "SPQR, ")
 endif()
 
 option(EIGEN_TEST_NOQT "Disable Qt support in unit tests" OFF)