R's spkg install checks for the file /usr/include/X11/Xwindows.h to determine whether to add X support. Is there any need to do this? I just run the configure script on my Solaris box with no options. i.e.

./configure

Despite /usr/include/X11/Xwindows.h not existing, R reports:

R is now configured for sparc-sun-solaris2.10

  Source directory:          .
  Installation directory:    /usr/local

  C compiler:                gcc -std=gnu99  -g -O2
  Fortran 77 compiler:       gfortran  -g -O2

  C++ compiler:              g++  -g -O2
  Fortran 90/95 compiler:    gfortran -g -O2
  Obj-C compiler:

  Interfaces supported:      X11, tcltk
  External libraries:        readline, ICU
  Additional capabilities:   PNG, JPEG, TIFF, NLS
  Options enabled:           shared BLAS, R profiling, Java

  Recommended packages:      yes


So it seems this test is inappropriate. Would it be better to let R decide whether to add X support or not?

Dave

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