Error(s) in re-building vignettes:
--- re-building 'an_introduction.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 57-68 (an_introduction.Rmd) 
Error: processing vignette 'an_introduction.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'an_introduction.Rmd'

--- re-building 'converting_from_GillespieSSA.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 64-85 (converting_from_GillespieSSA.Rmd) 
Error: processing vignette 'converting_from_GillespieSSA.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'converting_from_GillespieSSA.Rmd'

--- re-building 'decaying_dimer.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 52-62 (decaying_dimer.Rmd) 
Error: processing vignette 'decaying_dimer.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'decaying_dimer.Rmd'

--- re-building 'epi_chain.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 96-106 (epi_chain.Rmd) 
Error: processing vignette 'epi_chain.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'epi_chain.Rmd'

--- re-building 'linear_chain.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 57-67 (linear_chain.Rmd) 
Error: processing vignette 'linear_chain.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'linear_chain.Rmd'

--- re-building 'logistic_growth.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 56-66 (logistic_growth.Rmd) 
Error: processing vignette 'logistic_growth.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'logistic_growth.Rmd'

--- re-building 'lotka_predator_prey.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 55-65 (lotka_predator_prey.Rmd) 
Error: processing vignette 'lotka_predator_prey.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'lotka_predator_prey.Rmd'

--- re-building 'radioactive_decay.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 46-56 (radioactive_decay.Rmd) 
Error: processing vignette 'radioactive_decay.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'radioactive_decay.Rmd'

--- re-building 'rm_predator_prey.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 77-87 (rm_predator_prey.Rmd) 
Error: processing vignette 'rm_predator_prey.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'rm_predator_prey.Rmd'

--- re-building 'sir.Rmd' using rmarkdown
Warning message:
In system(cmd) : 'make' not found
Quitting from lines 51-61 (sir.Rmd) 
Error: processing vignette 'sir.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'sir.Rmd'

SUMMARY: processing the following files failed:
  'an_introduction.Rmd' 'converting_from_GillespieSSA.Rmd'
  'decaying_dimer.Rmd' 'epi_chain.Rmd' 'linear_chain.Rmd'
  'logistic_growth.Rmd' 'lotka_predator_prey.Rmd'
  'radioactive_decay.Rmd' 'rm_predator_prey.Rmd' 'sir.Rmd'

Error: Vignette re-building failed.
Execution halted