MESSAGE(FATAL_ERROR "Teuchos: ${PACKAGE_NAME}_ENABLE_COMPLEX is OFF, yet you set HAVE_COMPLEX_BLAS=ON.  Please do not do this.  You normally do not need to set HAVE_COMPLEX_BLAS explicitly.  If for some reason you do, then it must have the same value as ${PACKAGE_NAME}_ENABLE_COMPLEX.")

MESSAGE(FATAL_ERROR "Tpetra: Tpetra_INST_COMPLEX_DOUBLE is ON (meaning that you want to want to instantiate and/or test Tpetra classes with Scalar = std::complex<double>), but HAVE_COMPLEX_BLAS is not defined.  This means that you are linking with a BLAS library that lacks complex arithmetic (Z) support.  Tpetra needs a BLAS implementation that supports complex arithmetic.")

ELSEIF (NOT HAVE_COMPLEX_BLAS)

MESSAGE(FATAL_ERROR "Tpetra: Tpetra_INST_COMPLEX_DOUBLE is ON (meaning that you want to want to instantiate and/or test Tpetra classes with Scalar = std::complex<double>), but HAVE_COMPLEX_BLAS is OFF.  This means that you are linking with a BLAS library that lacks complex arithmetic (Z) support.  Tpetra needs a BLAS implementation that supports complex arithmetic.")

MESSAGE(FATAL_ERROR "Tpetra: Tpetra_INST_COMPLEX_FLOAT is ON (meaning that you want to want to instantiate and/or test Tpetra classes with Scalar = std::complex<float>), but HAVE_COMPLEX_BLAS is not defined.  This means that you are linking with a BLAS library that lacks complex arithmetic (Z) support.  Tpetra needs a BLAS implementation that supports complex arithmetic.")

ELSEIF (NOT HAVE_COMPLEX_BLAS)

MESSAGE(FATAL_ERROR "Tpetra: Tpetra_INST_COMPLEX_FLOAT is ON (meaning that you want to want to instantiate and/or test Tpetra classes with Scalar = std::complex<float>), but HAVE_COMPLEX_BLAS is OFF.  This means that you are linking with a BLAS library that lacks complex arithmetic (Z) support.  Tpetra needs a BLAS implementation that supports complex arithmetic.")