The Makefile shown below sometimes fails to build the main target (app1). Can anyone reproduce the error and explain what's wrong or confirm it's a bug?
All required files are in the attached .tar file. To reproduce the error,
make sure app1.o does not exist, then run "make -j2 app1" repeatedly.
On my machine (Intel core i5 551, openSuSE 11.3, make 3.81) make
fails after a few retries, because the link command is invoked before
app1.o is compiled.
--Michael
### --- Makefile start ---
AR := ar
CC := gcc
all: app1
# Link apps
app%: app%.o lib.a
${CC} ${@:app%=app%.o} lib.a -o $@
# Link lib.a
LIBSRCS := a b
lib.a: ${LIBSRCS:%=%.o}
${AR} r $@ ${LIBSRCS:%=%.o}
# Compile
%.o: src/%.c
$(CC) -c -o $@ $<
# Dependencies
a.o: a.c lib.h
b.o: b.c lib.h
### --- Makefile end ---
make_bug.tar
Description: Unix tar archive
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