On Mon, Dec 19, 2022 at 9:37 AM <jim.cromie@xxxxxxxxx> wrote: > > Id like to build 2 modules (with different names) > from a single source file, with 2nd being dependent > on the 1st. > > Specifically, Ive got: > lib/test_dynamic_debug.c > > I want > A: lib/test_dynamic_debug.ko > B: lib/test_dynamic_debug_submod.ko > > I expect that the code just needs an #ifdef #else #endif > block to clearly put the dependor & dependee elements > next to each other. > > My question is how to do this in the Makefile ? > this does most of it > > --- a/lib/Makefile > +++ b/lib/Makefile > @@ -78,7 +78,8 @@ obj-$(CONFIG_TEST_SORT) += test_sort.o > obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o > obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o > obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o > -obj-$(CONFIG_TEST_DYNAMIC_DEBUG) += test_dynamic_debug.o > +obj-$(CONFIG_TEST_DYNAMIC_DEBUG) += test_dynamic_debug.o > test_dynamic_debug_submod.o > +CFLAGS_test_dynamic_debug_submod.o += -DTEST_DYNAMIC_DEBUG_SUBMOD > obj-$(CONFIG_TEST_PRINTF) += test_printf.o > > but how do I tell it the 2nd target ? more to the point, this doesnt work (nor do permutations), I miss something: +($obj)/test_dynamic_debug_submod.o: ($obj)/test_dynamic_debug.c > make[2]: *** No rule to make target 'lib/test_dynamic_debug_submod.o', > needed by 'lib/modules.order'. Stop. > make[1]: *** [/home/jimc/projects/lx/wk-test/scripts/Makefile.build:500: > lib] Error 2 > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
