Automake: How to use a header from one library in a another library in a sister directory

问题

My directory set up:

libone
  one.c
  one.h
  Makefile.am

libtwo
  two.c #includes one.h
  two.h
  Makefile.am

...
Makefile.am
configure.ac
...

Now when I do autoreconf -fvi and configure and make, I get the error from two.c: could not find one.h. How do I setup the include paths in Makefile.am's? Any help appreciated.

回答1:

Either do it the quick'n'dirty way

#include "../libone/one.h"

or (preferred, because then it doesn't matter whether one.h is installed or in the source tree or split out into a different project)

#include <libone/one.h>

and in your Makefile.am

libtwo_a_SOURCES = two.c two.h
libtwo_a_CPPFLAGS = -I$(top_srcdir)

来源：https://stackoverflow.com/questions/13088365/automake-how-to-use-a-header-from-one-library-in-a-another-library-in-a-sister