Issue with static library in c

Question

I'm trying to create a static library in C. I'm use gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3)

My c files is here:

add.c //Addition operation perform sub.c // Subtract operation perform mul.c // Multiply operation perform div.c // Division operation perform

And I'm trying to crate static library libabc.a using following command.

ar rcs libabc.a add.c sub.c mul.c div.c

And It's successfully created. but when I run executable using ./a.out ./libabc.a, I got following error.

./libabc.a: error adding symbols: Archive has no index; run ranlib to add one collect2: error: ld returned 1 exit status

What I doing wrong? please help me.

Thanks in Advance.

msc · Accepted Answer · 2017-02-11 08:23:15Z

Use object files(.o) instead of source file(.c). Like,

ar rcs libabc.a sum.o mul.o add.o div.o

Using -c option , create .o file.

cc -c -fpic add.c sub.c mul.c div.c

To link purely statically library, use -static, Like

cc -static yourprgram.c libabc.a

And run executable ./a.out. It successfully work.

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