Autotools

configure.ac

AC_INIT[hello], [1.0], [bug@xxx.org])
AM_INIT_AUTOMAKE([-Wall -Werror foreign])
AM_PROG_AR
AC_PROG_RANLIB
AC_PROG_CC
AC_PROG_CXX
AC_CONFIG_FILES([
	Makefile
	echo/Makefile
	])
AC_OUTPUT

Makefile.am

bin_PROGRAMS = hello
SUBDIRS=echo
hello_SOURCES = hello.cpp
hello_LDADD = ./echo/echo.a
hello_LDFLAGS = -lstdc++ -lpthread
AM_CPPFLAGS = -Iinclude
AM_CXXFLAGS = -std=c++11

autoreconf --install
./configure
make

CMake

CMakeLists.txt

add_executable(test, test.cc)

cmake .
make