Amittai Aviram <amittai.aviram@xxxxxxxx> writes: > I would like to define some new functions in libgomp and make these > available to applications compiled with GCC with the -fopenmp flag. > Suppose I want to export function void foo(void). I had thought that > I could just define it in, say, foo.c, include foo.c into my build of > libgomp, and provide a header file in my application with foo's > signature. However, when I do this, I get a linker error that the > application uses an "undefined function." I have verified that foo.o > and foo.lo are in my gcc_obj build directory tree, and that the > definition of "foo" does indeed occur in foo.o (i.e., I can see its > disassembly using objdump -d). Now, libgomp already exports a bunch > of functions, such as omp_get_thread_num, etc. How can I do the same > with my new functions? Thanks! You need to edit libgomp/libgomp.map to assign an appropriate version to your new symbol. All libgomp symbols not mentioned in that file are hidden in libgomp.so. Ian
