Re: ?????? ?????? Implicit rule for linking multiple object files

[ljh]

Hi Paul,

I use some example code which uses C++20 modules.

There are five .cpp files, e.g:

main.c  depends on a.c b.c c.c d.c

b.c d.c depends on c.c

a.c     depends on b.c

d.c     depends on a.c

I update my Makefile like the following. Is it correct and guaranteed to work

under parallel make?

CXXFLAGS = -std=c++2a -fmodules-ts

CC       = $(CXX)

# executable

main : a.o b.o c.o d.o main.o

# order of compiling object files

main.o : a.o b.o c.o d.o

b.o d.o : c.o

a.o : b.o

d.o : a.o

Thanks