Generate executable file with makefile in linux

Question

I want to generate two executable file from two sources.

What should i put in the Flag EXEC ? Is this line correct? --> EXEC := amqp_consommateur amqp_producteur

CC := gcc
CFLAGS := -Wall -g
SRCDIR := src
OBJDIR := obj
INCLUDES := -I/usr/local/include/ -I/home/tvi/projets/RabbitMQ/libamqp/dlo -I/home/tvi/projets/RabbitMQ/rabbitmq-c/librabbitmq 
LFLAGS := -L/usr/local/lib64
LDFLAGS :=
LIBS := -L. -lrabbitmq
SRCS_RAW := amqp_consommateur.c amqp_producteur.c

SRCS := $(addprefix $(SRCDIR)/,$(SRCS_RAW))
OBJS := $(addprefix $(OBJDIR)/,$(SRCS_RAW:.c=.o))
EXEC := amqp_consommateur amqp_producteur

$(info DEBUG: SRCS=$(SRCS))
$(info DEBUG: OBJS=$(OBJS))
$(info DEBUG: EXEC=$(EXEC))

.PHONY: all
all: $(EXEC)
    @echo "$(MAKE) : Tout est généré"

$(EXEC): $(OBJS)
    $(CC) $(CFLAGS) -o $(EXEC) $(OBJS) $(LDFLAGS) $(INCLUDES) $(LFLAGS) $(LIBS)

#rule to create object directory if it doesnt exist
$(OBJDIR):
    mkdir $(OBJDIR)

#define implicit rule to build objects in their own directory
#(note -- order only dependency on object directory)
$(OBJS): $(OBJDIR)/%.o: $(SRCDIR)/%.c | $(OBJDIR)
    $(CC) $(CFLAGS) $(INCLUDES) -c $<  -o $@
    
.PHONY: clean
clean:
    $(RM) *~  $(EXEC)
    $(RM) -r $(OBJDIR)

`-o $(EXEC)` won't work. You can't output multiple executables with a single compilation. — Barmar, Jan 26 '21 at 15:59
@Barmar 12: so you should do two makefiles to generate two executables? — Embeded_developer, Jan 26 '21 at 16:12
No, separate rules in the same makefile for each executable. — Barmar, Jan 26 '21 at 16:13
This thread might be helpful https://stackoverflow.com/questions/26133377/understanding-makefile-with-c-o-and — Zois Tasoulas, Jan 26 '21 at 16:19
@Barmar: how can I separate rules for each executable ? Thanks. — Embeded_developer, Jan 26 '21 at 16:26
There's a built-in default recipe for creating XXX from XXX.o. Just use that instead of writing your own. — Barmar, Jan 26 '21 at 16:26
https://www.gnu.org/software/make/manual/html_node/Catalogue-of-Rules.html — Barmar, Jan 26 '21 at 17:03
Does this answer your question? [Makefile to compile multiple C programs?](https://stackoverflow.com/questions/5950395/makefile-to-compile-multiple-c-programs) — Tsyvarev, Jan 27 '21 at 09:10

Generate executable file with makefile in linux

0 Answers0