Full_Name: Richard L. Grubb Version: 1.6.2 OS: AIX 4.3.3 Submission from: (NULL) (130.76.96.17) The ldAIX4 script in the tools directory calls the nm program, assuming it is the nm supplied with AIX. However, I have GNU nm in $HOME/bin, and it was being executed instead of /usr/bin/nm or /bin/nm. The script failed silently, and caused downstream problems because etc/R.exp was empty. I ran into this same bug under R 1.7.0, but have not verified my fix yet (I backed up to version 1.6.2 to see if I could build it). My fix was to replace the line "nm=nm" in the script ldAIX4 with "nm=/bin/nm" See also my bug report on nm not being able to read src/main/dounzip.o