Dynamic library with multiple object files, fails during loading

Question

Similar to this post: Compile multiple C source fles into a unique object file

I have to compile multiple C files into a single dynamic shared library. Here is what I have in my Makefile:

_OBJS = file1.o file2.o

CFLAGS += -Wall -I../include 

SHARED_LIB =libdynamic.so

.PHONY: all
all:  (SHARED_LIB)

$(SHARED_LIB): 
        $(CC) -fPIC -c file1.c file2.c $(CFLAGS) 
        $(CC) -shared -o $(SHARED_LIB) -L$/lib -ldl $(_OBJS)

However the generated shared library doesn't have the functions belonging to file2.c. How can I get it working?

Thanks.

Answer 1

您没有创建目标文件（* .o）。

尝试：

$(SHARED_LIB):
    $(CC) -fPIC -c file1.c -o file1.o $(CFLAGS)
    $(CC) -fPIC -c file2.c -o file2.o $(CFLAGS)
    $(CC) -shared -o $(SHARED_LIB) -L$/lib -ldl $(_OBJS)

此外，您在all:目标后缺少'$'。