使用Autotools对“main”的未定义引用

Question

I have a little program, when I run make this error appears:

$ make
make  all-recursive
make[1]: se ingresa al directorio «/home/foo/boolham»
Making all in src
make[2]: se ingresa al directorio «/home/foo/boolham/src»
/bin/bash ../libtool --tag=CC   --mode=link gcc -std=gnu99  -g -O2   -o set set.o  
libtool: link: gcc -std=gnu99 -g -O2 -o set set.o 
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: ld returned 1 exit status
make[2]: *** [set] Error 1
make[2]: se sale del directorio «/home/foo/boolham/src»
make[1]: *** [all-recursive] Error 1
make[1]: se sale del directorio «/home/foo/boolham»
make: *** [all] Error 2

My Makefile.am has:

lib_LTLIBRARIES = libfsequence.la
libfsequence_la_SOURCES = fsequence.c fsequence.h

bin_PROGRAMS = set main

main_SOURCES = main.c main.h
set_SOURCES = set.c set.h

main_LDADD = libfsequence.la

main.c has only int main() function, set.c has sets functions and fsequences.c has functions to generate sequences of numbers. fsequences.c includes set.h as a utility functions and main.c includes fsequences.h .

What's wrong with my code?

Answer 1

It is a little shot in the dark, but I guess your set.c file is a file without main. Then You should not treat it as a program - it should be compiled with -c option (so .o file will be generated and linked with main).

I'm not familiar with autotools, but you should check some examples how to do that.

EDIT:

according to: http://socgsa.cs.clemson.edu/seminar/tools06/resources/08_autotools/automake.htm you just should remove 'set' from 'bin_PROGRAMS'