Dear all, The default name for a pascal procedure does not work correctly anymore. (See the output for version number and so on below). Explicitly declaring the name works, so a workaround is available. That can be done as follows: procedure p_routine; attribute (name='P_routine') If I am making a mistake somewhere, I would be glad to hear. Regards, Marten Jan de Ruiter % gpc --version gpc 20030830, based on gcc-3.2.1 % cat c_unit.c #include <stdio.h> extern void c_routine(); extern void P_routine(); void c_routine() { printf("c_routine invoked\n"); P_routine(); printf("c_routine done\n"); } % cat use_c_unit.p program test_c_unit; (*$L c_unit.c *) procedure c_routine; external name 'c_routine' ; procedure p_routine; begin writeln('pascal routine invoked'); end; begin c_routine; p_routine; end. % gpc --automake use_c_unit.p -o use_c_unit c_unit.o: In function `c_routine': c_unit.o(.text+0x13): undefined reference to `P_routine' collect2: ld returned 1 exit status # hmmm... does P_routine actually exist? Or does it have another name? % gpc -c --automake use_c_unit.p ; grep P_routine use_c_unit.o Binary file use_c_unit.o matches # Now I am stuck...