How to compile the multithread code with gcc

Question

I have seen the given two makefiles as follows:

all: thread1 thread2 thread3

CFLAGS=-I/usr/include/nptl -D_REENTRANT
LDFLAGS=-L/usr/lib/nptl -lpthread

clea         


        

Answer 1

Almost:

gcc -o thread1 -I/usr/include/nptl -D_REENTRANT -L/usr/lib/nptl thread1.c -lpthread

The *FLAGS variables contain the arguments that are passed to the compiler and linker invocartion, respectively. (In your case you're compiling and linking in one go.) Make sure to add libraries after your own object files.