project(EigenBlas CXX)

if( NOT DEFINED EIGEN_Fortran_COMPILER_WORKS OR EIGEN_Fortran_COMPILER_WORKS)

  enable_language(Fortran OPTIONAL)

  if(CMAKE_Fortran_COMPILER_WORKS)
    set(EIGEN_Fortran_COMPILER_WORKS TRUE CACHE INTERNAL "workaround cmake's enable_language issue")
  else()
    set(EIGEN_Fortran_COMPILER_WORKS FALSE CACHE INTERNAL "workaround cmake's enable_language issue")
  endif()
  
endif()

add_custom_target(blas)

set(EigenBlas_SRCS single.cpp double.cpp complex_single.cpp complex_double.cpp xerbla.cpp)

if(CMAKE_Fortran_COMPILER_WORKS)

message(WARNING " No fortran compiler has been detected, the blas build will be incomplete.")

set(EigenBlas_SRCS ${EigenBlas_SRCS}
    complexdots.f
    srotm.f srotmg.f drotm.f drotmg.f
    lsame.f   chpr2.f  ctbsv.f  dspmv.f  dtbmv.f  dtpsv.f ssbmv.f  sspr.f   stpmv.f
    zhpr2.f  ztbsv.f chbmv.f  chpr.f   ctpmv.f     dspr2.f dtbsv.f  sspmv.f  stbmv.f  stpsv.f
    zhbmv.f  zhpr.f   ztpmv.f chpmv.f  ctbmv.f  ctpsv.f    dsbmv.f  dspr.f   dtpmv.f   sspr2.f
    stbsv.f  zhpmv.f  ztbmv.f  ztpsv.f
)

endif(CMAKE_Fortran_COMPILER_WORKS)

add_library(eigen_blas_static ${EigenBlas_SRCS})
add_library(eigen_blas SHARED ${EigenBlas_SRCS})

if(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO)
  target_link_libraries(eigen_blas_static ${EIGEN_STANDARD_LIBRARIES_TO_LINK_TO})
  target_link_libraries(eigen_blas        ${EIGEN_STANDARD_LIBRARIES_TO_LINK_TO})
endif()

add_dependencies(blas eigen_blas eigen_blas_static)

install(TARGETS eigen_blas eigen_blas_static
        RUNTIME DESTINATION bin
        LIBRARY DESTINATION lib
        ARCHIVE DESTINATION lib)

if(CMAKE_Fortran_COMPILER_WORKS)

if(EIGEN_LEAVE_TEST_IN_ALL_TARGET)
  add_subdirectory(testing) # can't do EXCLUDE_FROM_ALL here, breaks CTest
else()
  add_subdirectory(testing EXCLUDE_FROM_ALL)
endif()

endif()