File 'RGtk2/libs/RGtk2.so':
  Found non-API calls to R: 'R_CStackLimit', 'R_new_custom_connection',
    'Rf_EncodeInteger', 'Rf_EncodeLogical', 'Rf_EncodeReal',
    'Rf_formatInteger', 'Rf_formatLogical', 'Rf_formatReal'

Compiled code should not call non-API entry points in R.

See 'Writing portable packages' in the 'Writing R Extensions' manual.
File ‘RGtk2/libs/RGtk2.so’:
  Found non-API calls to R: ‘R_CStackLimit’, ‘R_new_custom_connection’,
    ‘Rf_EncodeInteger’, ‘Rf_EncodeLogical’, ‘Rf_EncodeReal’,
    ‘Rf_formatInteger’, ‘Rf_formatLogical’, ‘Rf_formatReal’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
installed size is 25.7Mb
  sub-directories of 1Mb or more:
    R      3.7Mb
    help  10.5Mb
    libs   9.7Mb
File ‘RGtk2/libs/RGtk2.so’:
  Found non-API calls to R: ‘R_CStackLimit’, ‘R_new_custom_connection’,
    ‘Rf_EncodeInteger’, ‘Rf_EncodeLogical’, ‘Rf_EncodeReal’,
    ‘Rf_formatInteger’, ‘Rf_formatLogical’, ‘Rf_formatReal’
File ‘RGtk2/libs/RGtk2.so’:
  Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’

Compiled code should not call non-API entry points in R.
It is good practice to register native routines and to disable symbol
search.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
File ‘RGtk2/libs/RGtk2.so’:
  Found non-API calls to R: ‘R_CStackLimit’, ‘R_new_custom_connection’,
    ‘Rf_EncodeInteger’, ‘Rf_EncodeLogical’, ‘Rf_EncodeReal’,
    ‘Rf_formatInteger’, ‘Rf_formatLogical’, ‘Rf_formatReal’
File ‘RGtk2/libs/RGtk2.so’:
  Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’

Compiled code should not call non-API entry points in R.
It is good practice to register native routines and to disable symbol
search.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
installed size is 34.3Mb
  sub-directories of 1Mb or more:
    R      3.7Mb
    help  10.6Mb
    libs  18.5Mb
File 'RGtk2/libs/x64/RGtk2.dll':
  Found non-API calls to R: 'R_new_custom_connection',
    'Rf_EncodeInteger', 'Rf_EncodeLogical', 'Rf_EncodeReal',
    'Rf_formatInteger', 'Rf_formatLogical', 'Rf_formatReal'

Compiled code should not call non-API entry points in R.

See 'Writing portable packages' in the 'Writing R Extensions' manual.
File 'RGtk2/libs/x64/RGtk2.dll':
  Found non-API calls to R: 'R_new_custom_connection',
    'Rf_EncodeInteger', 'Rf_EncodeLogical', 'Rf_EncodeReal',
    'Rf_formatInteger', 'Rf_formatLogical', 'Rf_formatReal'

Compiled code should not call non-API entry points in R.

See 'Writing portable packages' in the 'Writing R Extensions' manual.
File ‘RGtk2/libs/RGtk2.so’:
  Found non-API calls to R: ‘R_CStackLimit’, ‘R_new_custom_connection’,
    ‘Rf_EncodeInteger’, ‘Rf_EncodeLogical’, ‘Rf_EncodeReal’,
    ‘Rf_formatInteger’, ‘Rf_formatLogical’, ‘Rf_formatReal’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
File ‘RGtk2/libs/RGtk2.so’:
  Found non-API calls to R: ‘R_CStackLimit’, ‘R_new_custom_connection’,
    ‘Rf_EncodeInteger’, ‘Rf_EncodeLogical’, ‘Rf_EncodeReal’,
    ‘Rf_formatInteger’, ‘Rf_formatLogical’, ‘Rf_formatReal’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
Installation failed.
See ‘/Volumes/Builds/packages/big-sur-arm64/results/4.1/RGtk2.Rcheck/00install.out’ for details.
installed size is 34.0Mb
  sub-directories of 1Mb or more:
    R      3.7Mb
    help  10.9Mb
    libs  17.7Mb
File ‘RGtk2/libs/RGtk2.so’:
  Found non-API calls to R: ‘R_CStackLimit’, ‘R_new_custom_connection’,
    ‘Rf_EncodeInteger’, ‘Rf_EncodeLogical’, ‘Rf_EncodeReal’,
    ‘Rf_formatInteger’, ‘Rf_formatLogical’, ‘Rf_formatReal’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
installed size is 21.0Mb
  sub-directories of 1Mb or more:
    R      3.7Mb
    help  10.7Mb
    libs   5.1Mb
File 'RGtk2/libs/i386/RGtk2.dll':
  Found non-API calls to R: 'R_new_custom_connection',
    'Rf_EncodeInteger', 'Rf_EncodeLogical', 'Rf_EncodeReal',
    'Rf_formatInteger', 'Rf_formatLogical', 'Rf_formatReal'
File 'RGtk2/libs/x64/RGtk2.dll':
  Found non-API calls to R: 'R_new_custom_connection',
    'Rf_EncodeInteger', 'Rf_EncodeLogical', 'Rf_EncodeReal',
    'Rf_formatInteger', 'Rf_formatLogical', 'Rf_formatReal'

Compiled code should not call non-API entry points in R.

See 'Writing portable packages' in the 'Writing R Extensions' manual.
installed size is 34.0Mb
  sub-directories of 1Mb or more:
    R      3.7Mb
    help  10.9Mb
    libs  17.7Mb
File ‘RGtk2/libs/RGtk2.so’:
  Found non-API calls to R: ‘R_CStackLimit’, ‘R_new_custom_connection’,
    ‘Rf_EncodeInteger’, ‘Rf_EncodeLogical’, ‘Rf_EncodeReal’,
    ‘Rf_formatInteger’, ‘Rf_formatLogical’, ‘Rf_formatReal’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
installed size is 20.9Mb
  sub-directories of 1Mb or more:
    R      3.7Mb
    help  10.7Mb
    libs   5.1Mb
File 'RGtk2/libs/i386/RGtk2.dll':
  Found non-API calls to R: 'R_new_custom_connection',
    'Rf_EncodeInteger', 'Rf_EncodeLogical', 'Rf_EncodeReal',
    'Rf_formatInteger', 'Rf_formatLogical', 'Rf_formatReal'
File 'RGtk2/libs/x64/RGtk2.dll':
  Found non-API calls to R: 'R_new_custom_connection',
    'Rf_EncodeInteger', 'Rf_EncodeLogical', 'Rf_EncodeReal',
    'Rf_formatInteger', 'Rf_formatLogical', 'Rf_formatReal'

Compiled code should not call non-API entry points in R.

See 'Writing portable packages' in the 'Writing R Extensions' manual.