SUCCESSFUL BUILDS R is known to configure and compile on the following platforms. If you have success on any others, let us know the platform names and any changes you had to make so we can update this file and our installation procedures. PLATFORM COMPILER NOTES i386-unknown-freebsd2.2.5 gcc / f77 i386-unknown-linux debian 1.3 gcc / g77 i386-unknown-linux debian 2.0 egcs/ g77 i386-unknown-linux Redhat 4.2 egcs/ g77 i386-unknown-linux Redhat 4.2 gcc / f2c i386-unknown-linux RedHat 5.0 (??) i386-unknown-linux SuSe 6.0 egcs/ f77 mips-sgi-irix6.2 cc / f77 (1) sparc-sun-solaris2.5.1 gcc / g77 " gcc / f77 (3) " cc / f77 sparc-sun-solaris2.6 gcc / f77 sparc-sun-solaris2.6 cc / f77 alpha-dec-osf4 gcc (4) OLD (pre 0.62 systems) hppa1.1-hp-hpux9.07 c89 (2) hppa1.1-hp-hpux10.20 c89 alpha-dec-osf3.2 cc NOTES (1) Perl version 5 must be installed in order to build the documentation. (The SGI supplied Perl is version 4). (2) The Makefile in src/main must be edited manually after configuration and the reference to the library "-lSM" removed. (3) A number of users appear to have installation problems with f77, requiring the f77 library directory to be explicitly specified in -L and -R (4) (Greg Snow ) It needed the -mieee-with-inexact flag (the default config used -ieee_with_inexact, note the m and the switch from _ to -) I also changed a line in plot.c, the line was around 411 (I added some printf's for debugging so this is probably not the original line number) the original line was: if (FINITE(asp) && asp > 0 ) { my new line is: if (FINITE(asp) && asp > 0 && asp != NA_REAL ) { Apparently my setup thinks that NA_REAL is positive finite so the change was neccesary.