Found the following significant warnings:
  source.cpp:29:12: warning: 'bool arma::syl(Mat<typename T1::elem_type>&, const Base<typename T1::elem_type, T1>&, const Base<typename T1::elem_type, T2>&, const Base<typename parent::elem_type, T2>&, const typename arma_blas_real_or_cx_only<typename T1::elem_type>::result*) [with T1 = Mat<double>; T2 = Op<Mat<double>, op_htrans>; T3 = Mat<double>; typename T1::elem_type = double; typename T1::elem_type = double; typename parent::elem_type = double; typename arma_blas_real_or_cx_only<typename T1::elem_type>::result = double; typename T1::elem_type = double]' is deprecated: use sylvester() instead [-Wdeprecated-declarations]
  source.cpp:163:12: warning: 'bool arma::syl(Mat<typename T1::elem_type>&, const Base<typename T1::elem_type, T1>&, const Base<typename T1::elem_type, T2>&, const Base<typename parent::elem_type, T2>&, const typename arma_blas_real_or_cx_only<typename T1::elem_type>::result*) [with T1 = Mat<double>; T2 = Op<Mat<double>, op_htrans>; T3 = Mat<double>; typename T1::elem_type = double; typename T1::elem_type = double; typename parent::elem_type = double; typename arma_blas_real_or_cx_only<typename T1::elem_type>::result = double; typename T1::elem_type = double]' is deprecated: use sylvester() instead [-Wdeprecated-declarations]
  source.cpp:448:12: warning: 'bool arma::syl(Mat<typename T1::elem_type>&, const Base<typename T1::elem_type, T1>&, const Base<typename T1::elem_type, T2>&, const Base<typename parent::elem_type, T2>&, const typename arma_blas_real_or_cx_only<typename T1::elem_type>::result*) [with T1 = Mat<double>; T2 = Op<Mat<double>, op_htrans>; T3 = Mat<double>; typename T1::elem_type = double; typename T1::elem_type = double; typename parent::elem_type = double; typename arma_blas_real_or_cx_only<typename T1::elem_type>::result = double; typename T1::elem_type = double]' is deprecated: use sylvester() instead [-Wdeprecated-declarations]
  source.cpp:507:12: warning: 'bool arma::syl(Mat<typename T1::elem_type>&, const Base<typename T1::elem_type, T1>&, const Base<typename T1::elem_type, T2>&, const Base<typename parent::elem_type, T2>&, const typename arma_blas_real_or_cx_only<typename T1::elem_type>::result*) [with T1 = Mat<double>; T2 = Op<Mat<double>, op_htrans>; T3 = Mat<double>; typename T1::elem_type = double; typename T1::elem_type = double; typename parent::elem_type = double; typename arma_blas_real_or_cx_only<typename T1::elem_type>::result = double; typename T1::elem_type = double]' is deprecated: use sylvester() instead [-Wdeprecated-declarations]
  source.cpp:548:12: warning: 'bool arma::syl(Mat<typename T1::elem_type>&, const Base<typename T1::elem_type, T1>&, const Base<typename T1::elem_type, T2>&, const Base<typename parent::elem_type, T2>&, const typename arma_blas_real_or_cx_only<typename T1::elem_type>::result*) [with T1 = Mat<double>; T2 = Op<Mat<double>, op_htrans>; T3 = Mat<double>; typename T1::elem_type = double; typename T1::elem_type = double; typename parent::elem_type = double; typename arma_blas_real_or_cx_only<typename T1::elem_type>::result = double; typename T1::elem_type = double]' is deprecated: use sylvester() instead [-Wdeprecated-declarations]
  source.cpp:727:12: warning: 'bool arma::syl(Mat<typename T1::elem_type>&, const Base<typename T1::elem_type, T1>&, const Base<typename T1::elem_type, T2>&, const Base<typename parent::elem_type, T2>&, const typename arma_blas_real_or_cx_only<typename T1::elem_type>::result*) [with T1 = Mat<double>; T2 = Op<Mat<double>, op_htrans>; T3 = Mat<double>; typename T1::elem_type = double; typename T1::elem_type = double; typename parent::elem_type = double; typename arma_blas_real_or_cx_only<typename T1::elem_type>::result = double; typename T1::elem_type = double]' is deprecated: use sylvester() instead [-Wdeprecated-declarations]
  source.cpp:766:12: warning: 'bool arma::syl(Mat<typename T1::elem_type>&, const Base<typename T1::elem_type, T1>&, const Base<typename T1::elem_type, T2>&, const Base<typename parent::elem_type, T2>&, const typename arma_blas_real_or_cx_only<typename T1::elem_type>::result*) [with T1 = Mat<double>; T2 = Op<Mat<double>, op_htrans>; T3 = Mat<double>; typename T1::elem_type = double; typename T1::elem_type = double; typename parent::elem_type = double; typename arma_blas_real_or_cx_only<typename T1::elem_type>::result = double; typename T1::elem_type = double]' is deprecated: use sylvester() instead [-Wdeprecated-declarations]
  source.cpp:788:12: warning: 'bool arma::syl(Mat<typename T1::elem_type>&, const Base<typename T1::elem_type, T1>&, const Base<typename T1::elem_type, T2>&, const Base<typename parent::elem_type, T2>&, const typename arma_blas_real_or_cx_only<typename T1::elem_type>::result*) [with T1 = Mat<double>; T2 = Op<Mat<double>, op_htrans>; T3 = Mat<double>; typename T1::elem_type = double; typename T1::elem_type = double; typename parent::elem_type = double; typename arma_blas_real_or_cx_only<typename T1::elem_type>::result = double; typename T1::elem_type = double]' is deprecated: use sylvester() instead [-Wdeprecated-declarations]
See 'd:/Rcompile/CRANpkg/local/4.5/cTMed.Rcheck/00install.out' for details.
* used C++ compiler: 'g++.exe (GCC) 14.2.0'