Libtool 不安装子项目

我正在C++做一个项目，我希望实现添加插件的能力。编译过程由 Autotools 处理。我已经设法将文件结构设置正确，并且主项目和插件都已编译，但由于某种原因，在运行make install时省略了插件。单独编译和安装插件时，它可以正常工作。我在这里错过了什么，或者为什么没有从顶部文件夹安装插件？

configure.ac

AC_PREREQ(2.58)
AC_INIT([Net Responsibility],[3.1r323],[contact@netresponsibility.com])
AC_SUBST([LIBTOOL_DEPS])
AC_CONFIG_AUX_DIR([.])
AC_CONFIG_SRCDIR([src/main.cpp])
AC_CONFIG_SUBDIRS([plugins/defaultReport])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([scripts/m4])
AC_CANONICAL_SYSTEM
AC_LANG([C++])
AC_PREFIX_PROGRAM([make])
AM_INIT_AUTOMAKE([subdir-objects])
LT_PREREQ([2.2])
LT_INIT([shared])

# Checks for programs.
AC_PROG_CXX
AC_PROG_INSTALL
# Checks for header files.
AC_HEADER_STDC

...
AC_CONFIG_FILES([Makefile])
AC_OUTPUT

Makefile.am

# Main library
lib_LTLIBRARIES = libNetResponsibility.la
libNetResponsibility_la_SOURCES = 
      @top_srcdir@/src/MainApplication.cpp
      ...
libNetResponsibility_la_CPPFLAGS = $(cppFlags)
libNetResponsibility_la_LDFLAGS = -no-undefined $(ldFlags)
# Minimal executable
bin_PROGRAMS = net-responsibility
net_responsibility_SOURCES = @top_srcdir@/src/main.cpp
net_responsibility_LDADD = -lNetResponsibility
dist_pkgdata_DATA = 
      $(top_srcdir)/data/txt.xml
      $(top_srcdir)/COPYING
dist_pkgdata_SCRIPTS = $(top_srcdir)/scripts/init.d
dist_noinst_SCRIPTS = $(top_srcdir)/scripts/postinst
      $(top_srcdir)/scripts/prerm
AM_LDFLAGS = -L/usr/local/lib -L/usr/lib
ACLOCAL_AMFLAGS = -I scripts/m4
incDirs = -I$(top_srcdir)/include
ldFlags = -L/usr/local/lib -L/usr/lib
cppFlags = $(incDirs)
           -DPKGDATADIR='$(pkgdatadir)'
           -DPKGLIBDIR='$(pkglibdir)'
           -DDATABASEDIR='$(databasedir)'
           -DPIDDIR='$(piddir)'
           @CPPFLAGS@
AM_CXXFLAGS = $(incDirs) @CXXFLAGS@
AM_CPPFLAGS = $(cppFlags)
EXTRA_DIST = $(top_srcdir)/lib $(top_srcdir)/include
SUBDIRS = . plugins/defaultReport
install: install-am postinst
uninstall: prerm uninstall-am postrm
postinst:
    $(top_srcdir)/scripts/postinst $(pkgdatadir) $(initdir)
prerm:
    $(top_srcdir)/scripts/prerm $(pkgdatadir) $(initdir)
postrm:
    rm -f $(piddir)/net-responsibility.pid
    rm -f $(pkgdatadir)/blacklist.xml
    rm -f $(pkgdatadir)/config.xml
    rm -rf $(pkgdatadir)/reports
    rm -f $(databasedir)/net-responsibility.db
    rm -f $(initdir)/net-responsibility
.PHONY: prerm postinst postrm

plugins/defaultReport/configure.ac

AC_PREREQ(2.58)
AC_INIT([Net Responsibility Plugin: Default Report],[0.1],[contact@netresponsibility.com])
AC_SUBST([LIBTOOL_DEPS])
AC_SUBST([nrlibdir], ["${libdir}/net-responsibility"])
AC_CONFIG_AUX_DIR([.])
AC_CONFIG_SRCDIR([src/Report.cpp])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
AC_LANG([C++])
AC_PREFIX_PROGRAM([make])
AM_INIT_AUTOMAKE([subdir-objects])
LT_PREREQ([2.2])
LT_INIT([shared])
# Checks for programs.
AC_PROG_CXX
AC_PROG_INSTALL
AC_CONFIG_FILES([Makefile])
AC_OUTPUT

plugins/defaultReport/Makefile.am

# General settings
ACLOCAL_AMFLAGS = -I m4
ldFlags = -L/usr/local/lib -L/usr/lib
AM_CXXFLAGS = @CXXFLAGS@
# Module specific settings
nrlib_LTLIBRARIES = defaultReport.la
defaultReport_la_SOURCES = 
   src/Report.cpp
defaultReport_la_LDFLAGS = -module -no-undefined $(ldFlags)
defaultReport_la_LIBADD = -lNetResponsibility
defaultReport_la_CPPFLAGS = -I../../include @CPPFLAGS@