--- libs/math/example/Jamfile.v2.orig	2019-04-09 21:36:00.000000000 +0200
+++ libs/math/example/Jamfile.v2	2020-06-30 15:38:40.568805000 +0200
@@ -132,9 +132,9 @@
    [ run series.cpp  ]
    [ run continued_fractions.cpp  ]
 
-   [ run root_elliptic_finding.cpp /boost/timer : : : release <link>static  [ requires cxx11_unified_initialization_syntax cxx11_defaulted_functions ] <target-os>freebsd:<linkflags>"-lrt" <target-os>linux:<linkflags>"-lrt -lpthread" ]
-   [ run root_finding_algorithms.cpp /boost/timer : : : release <link>static  [ requires cxx11_hdr_tuple cxx11_unified_initialization_syntax ] <target-os>freebsd:<linkflags>"-lrt" <target-os>linux:<linkflags>"-lrt -lpthread" ]
-   [ run root_n_finding_algorithms.cpp /boost/timer : : : release <link>static  [ requires cxx11_unified_initialization_syntax cxx11_defaulted_functions ] <target-os>freebsd:<linkflags>"-lrt" <target-os>linux:<linkflags>"-lrt -lpthread" ]
+   [ run root_elliptic_finding.cpp /boost/timer : : : release <link>static  [ requires cxx11_unified_initialization_syntax cxx11_defaulted_functions ] <target-os>bsdsunix:<linkflags>"-lrt" <target-os>freebsd:<linkflags>"-lrt" <target-os>linux:<linkflags>"-lrt -lpthread" ]
+   [ run root_finding_algorithms.cpp /boost/timer : : : release <link>static  [ requires cxx11_hdr_tuple cxx11_unified_initialization_syntax ] <target-os>bsdsunix:<linkflags>"-lrt" <target-os>freebsd:<linkflags>"-lrt" <target-os>linux:<linkflags>"-lrt -lpthread" ]
+   [ run root_n_finding_algorithms.cpp /boost/timer : : : release <link>static  [ requires cxx11_unified_initialization_syntax cxx11_defaulted_functions ] <target-os>bsdsunix:<linkflags>"-lrt" <target-os>freebsd:<linkflags>"-lrt" <target-os>linux:<linkflags>"-lrt -lpthread" ]
 
    [ explicit root_elliptic_finding  ]
    [ explicit root_finding_algorithms  ]