I got these errors too - looks like just cos and sin are busted. Clues ?

cc   -o pic lex.o main.o object.o common.o troff.o tex.o pic.o /usr/src/gnu/usr.bin/groff/libgroff/obj/libgroff.a -lm -lgnumalloc
ld: object.o: RRS text relocation at 0xb7ca for "_cos"
ld: object.o: RRS text relocation at 0xb7ba for "_sin"
ld: common.o: RRS text relocation at 0xe18c for "_cos"
ld: common.o: RRS text relocation at 0xe17c for "_sin"
ld: common.o: RRS text relocation at 0xc90a for "_cos"
ld: common.o: RRS text relocation at 0xc8fa for "_sin"
ld: common.o: RRS text relocation at 0xc39a for "_cos"
ld: common.o: RRS text relocation at 0xc38a for "_sin"
ld: common.o: RRS text relocation at 0xc9f8 for "_cos"
ld: common.o: RRS text relocation at 0xc9e4 for "_sin"
ld: pic.o: RRS text relocation at 0x15928 for "_cos"
ld: pic.o: RRS text relocation at 0x158d4 for "_sin"
ld: internal error: RRS relocs exceed allocation 48
*** Error code 1

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 John Brezak                    UUCP:     uunet!apollo.hp!brezak
 Hewlett Packard/Apollo         Internet: brezak@ch.hp.com
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