Makefile: add flags after -o - c++

Question

I am trying to compile Indri 5.9 (downloaded from http://sourceforge.net/projects/lemur/) on Ubuntu 14.04 LTS using VirtualBox, but after "env CPP=/usr/bin/cpp CXX=/usr/bin/g++ ./configure" and when I "make", I got a problem: ator.cpp:216:undefined reference to 'gzopen'. I already installed zlib1g0dev by "sudo apt-get install zlib1g-dev", and according to Compilation problems with ZLIB it seems I have to add "-lz" at the end of "-o". However, this is my Makefile:
-include MakeDefns
INSTALLDIRS = $(bindir) $(includedir) $(pkgincludedir) $(includedir)/lemur $(libdir) $(pkgdatadir) $(pkgdatadir)/doc
.PHONY: all dist clean install $(INSTALLDIRS) site-search
all:
$(MAKE) -C contrib
$(MAKE) -C obj -f ../src/Makefile
ifeq ($(WITH_SWIG), 1)
$(MAKE) -C swig/src
endif
$(MAKE) -C buildindex
$(MAKE) -C runquery
$(MAKE) -C indrid
$(MAKE) -C dumpindex
$(MAKE) -C harvestlinks
$(MAKE) -C pagerank
$(MAKE) -C rmodel
$(MAKE) -C makeprior
$(MAKE) -C site-search
$(MAKE) -C modifyfields
$(MAKE) -C clarity
$(MAKE) -C reformulate
$(INSTALLDIRS):
$(INSTALL_DIR) $#
clean:
$(MAKE) clean -C contrib
$(MAKE) clean -C obj -f ../src/Makefile
ifeq ($(WITH_SWIG), 1)
$(MAKE) clean -C swig/src
endif
$(MAKE) clean -C buildindex
$(MAKE) clean -C runquery
$(MAKE) clean -C indrid
$(MAKE) clean -C dumpindex
$(MAKE) clean -C harvestlinks
$(MAKE) clean -C pagerank
$(MAKE) clean -C rmodel
$(MAKE) clean -C makeprior
$(MAKE) -C site-search clean
$(MAKE) -C modifyfields clean
$(MAKE) -C clarity clean
$(MAKE) -C reformulate clean
rm -f depend/*
distclean: clean
rm -rf autom4te.cache MakeDefns Makefile.app config.log config.status indri.ncb indri.suo
dist: distclean
$(MAKE) stamp -C obj -f ../src/Makefile
cd ..; tar zcvf indri-`date +%Y%m%d-%H%M`.tar.gz indri
install: $(INSTALLDIRS)
rm -f $(libdir)/$(INDRILIB)
$(MAKE) install -C contrib
$(MAKE) install -C obj -f ../src/Makefile
ifeq ($(WITH_SWIG), 1)
$(MAKE) install -C swig/src
endif
$(MAKE) install -C buildindex
$(MAKE) install -C runquery
$(MAKE) install -C indrid
$(MAKE) install -C dumpindex
$(MAKE) install -C harvestlinks
$(MAKE) install -C pagerank
$(MAKE) install -C rmodel
$(MAKE) install -C makeprior
$(MAKE) install -C modifyfields
$(MAKE) install -C clarity
$(MAKE) install -C reformulate
$(MAKE) install -C doc
$(MAKE) -C site-search install
$(INSTALL_DATA) Makefile.app $(pkgdatadir)
test:
And this is MakeDefns:
SHELL = /bin/bash
host_os = linux-gnu
srcdir = .
top_srcdir = .
prefix = /usr/local
exec_prefix = ${prefix}
bindir = ${exec_prefix}/bin
sbindir = ${exec_prefix}/sbin
libexecdir = ${exec_prefix}/libexec
datadir = ${datarootdir}
sysconfdir = ${prefix}/etc
sharedstatedir = ${prefix}/com
localstatedir = ${prefix}/var
libdir = ${exec_prefix}/lib
infodir = ${datarootdir}/info
mandir = ${datarootdir}/man
includedir = ${prefix}/include
datarootdir = ${prefix}/share
oldincludedir = /usr/include
pkgdatadir = $(datadir)/indri
pkglibdir = $(libdir)/indri
pkgincludedir = $(includedir)/indri
top_builddir = .
AR = /usr/bin/ar
CC = gcc
GCC_33 = 0
CXX = /usr/bin/g++
LEX = :
INSTALL = /usr/bin/install -c
INSTALL_DATA = ${INSTALL} -m 644
INSTALL_PROGRAM = ${INSTALL}
INSTALL_DIR = ${INSTALL} -m 755 -d
JAVAC =
JAR =
JAVAINC =
JAVADOC =
JAVAHOME =
NEED_ANTLR = 1
SWIG =
PHP_SHARED = -shared
JAVA_SHARED = -shared
CSHARP_SHARED = -shared
PHP_SO = .so
JAVA_SO = .so
CSHARP_SO = .so
PHPINCLUDE =
MCS=
DEPENDENCIES = lemur xpdf
ifeq ($(NEED_ANTLR), 1)
DEPENDENCIES += antlr
endif
PACKAGE = indri
VERSION = 5.8
distdir = $(PACKAGE)-$(VERSION)
top_distdir = $(distdir)
INDRI_STANDALONE = 1
INDRILIB = lib$(PACKAGE).a
WITH_SWIG = 0
WITH_JAVA = 0
WITH_PHP = 0
WITH_CSHARP = 0
# C++ source files
CPPSRC1 = $(notdir $(wildcard ../src/*.cpp))
CPPSRC2 = $(notdir $(wildcard ../src/*.cc))
CPPSRC3 = $(notdir $(wildcard ../src/*.C))
# C source files
CSRC = $(notdir $(wildcard ../src/*.c))
# flex source files
FSRC = $(notdir $(wildcard ../src/*.l))
# Flex objects
FCPP = $(filter-out $(CPPSRC1), $(FSRC:.l=.cpp))
CPPSRC = $(CPPSRC1) $(CPPSRC3) $(CPPSRC3) $(FCPP)
.SECONDARY: $($(wildcard ../src/*.l).l=.cpp)
# All header files
ALLHEADER = $(wildcard ../include/indri/*.h*)
# Include path
INCPATH = -I../include $(patsubst %, -I../contrib/%/include, $(DEPENDENCIES))
ALLINCPATH = $(INCPATH)
# C++ objects
CPPOBJ = $(CPPSRC:.cpp=.o) $(CPPSRC2:.cc=.o) $(CPPSRC3:.C=.o)
# C objects
COBJ = $(CSRC:.c=.o)
# all objects
OBJ = $(CPPOBJ) $(COBJ)
# application makefiles should set SHARED=
# (see buildindex/Makefile
SHARED = -shared -fPIC
# C compiler and compiling options
# C++ compiler and compiling/linking options
CFLAGS = -DPACKAGE_NAME=\"Indri\" -DPACKAGE_TARNAME=\"indri\" -DPACKAGE_VERSION=\"5.8\" -DPACKAGE_STRING=\"Indri\ 5.8\" -DPACKAGE_BUGREPORT=\"project#lemurproject.org\" -DINDRI_STANDALONE=1 -DHAVE_LIBM=1 -DHAVE_LIBPTHREAD=1 -DHAVE_NAMESPACES=/\*\*/ -DISNAN_IN_NAMESPACE_STD=/\*\*/ -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_FSEEKO=1 -DHAVE_EXT_ATOMICITY_H=1 -DP_NEEDS_GNU_CXX_NAMESPACE=1 -DHAVE_MKSTEMP=1 -DHAVE_MKSTEMPS=1 -DNDEBUG=1 -g -O3 $(INCPATH) $(SHARED)
CXXFLAGS = -DPACKAGE_NAME=\"Indri\" -DPACKAGE_TARNAME=\"indri\" -DPACKAGE_VERSION=\"5.8\" -DPACKAGE_STRING=\"Indri\ 5.8\" -DPACKAGE_BUGREPORT=\"project#lemurproject.org\" -DINDRI_STANDALONE=1 -DHAVE_LIBM=1 -DHAVE_LIBPTHREAD=1 -DHAVE_NAMESPACES=/\*\*/ -DISNAN_IN_NAMESPACE_STD=/\*\*/ -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_FSEEKO=1 -DHAVE_EXT_ATOMICITY_H=1 -DP_NEEDS_GNU_CXX_NAMESPACE=1 -DHAVE_MKSTEMP=1 -DHAVE_MKSTEMPS=1 -DNDEBUG=1 -g -O3 $(INCPATH) $(SHARED)
CXXFLAGS_NOOPT = -DPACKAGE_NAME=\"Indri\" -DPACKAGE_TARNAME=\"indri\" -DPACKAGE_VERSION=\"5.8\" -DPACKAGE_STRING=\"Indri\ 5.8\" -DPACKAGE_BUGREPORT=\"project#lemurproject.org\" -DINDRI_STANDALONE=1 -DHAVE_LIBM=1 -DHAVE_LIBPTHREAD=1 -DHAVE_NAMESPACES=/\*\*/ -DISNAN_IN_NAMESPACE_STD=/\*\*/ -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_FSEEKO=1 -DHAVE_EXT_ATOMICITY_H=1 -DP_NEEDS_GNU_CXX_NAMESPACE=1 -DHAVE_MKSTEMP=1 -DHAVE_MKSTEMPS=1 -DNDEBUG=1 -g $(INCPATH) $(SHARED)
CPPLDFLAGS = -lpthread -lm
ifeq ($(STYLE),release)
CFLAGS = -DPACKAGE_NAME=\"Indri\" -DPACKAGE_TARNAME=\"indri\" -DPACKAGE_VERSION=\"5.8\" -DPACKAGE_STRING=\"Indri\ 5.8\" -DPACKAGE_BUGREPORT=\"project#lemurproject.org\" -DINDRI_STANDALONE=1 -DHAVE_LIBM=1 -DHAVE_LIBPTHREAD=1 -DHAVE_NAMESPACES=/\*\*/ -DISNAN_IN_NAMESPACE_STD=/\*\*/ -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_FSEEKO=1 -DHAVE_EXT_ATOMICITY_H=1 -DP_NEEDS_GNU_CXX_NAMESPACE=1 -DHAVE_MKSTEMP=1 -DHAVE_MKSTEMPS=1 -DNDEBUG=1 -DNDEBUG -g -O3 $(INCPATH) $(SHARED)
CXXFLAGS = -DPACKAGE_NAME=\"Indri\" -DPACKAGE_TARNAME=\"indri\" -DPACKAGE_VERSION=\"5.8\" -DPACKAGE_STRING=\"Indri\ 5.8\" -DPACKAGE_BUGREPORT=\"project#lemurproject.org\" -DINDRI_STANDALONE=1 -DHAVE_LIBM=1 -DHAVE_LIBPTHREAD=1 -DHAVE_NAMESPACES=/\*\*/ -DISNAN_IN_NAMESPACE_STD=/\*\*/ -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_FSEEKO=1 -DHAVE_EXT_ATOMICITY_H=1 -DP_NEEDS_GNU_CXX_NAMESPACE=1 -DHAVE_MKSTEMP=1 -DHAVE_MKSTEMPS=1 -DNDEBUG=1 -DNDEBUG -g -O3 $(INCPATH) $(SHARED)
CPPLDFLAGS = -lpthread -lm
endif
ifeq ($(STYLE),profile)
CFLAGS=-g -pg $(INCPATH)
CXXFLAGS=-g -pg $(INCPATH)
endif
# generating C++ with flex
../src/%.cpp: ../src/%.l
$(LEX) -8 -Cf -o$# $<
I am new to Makefile, so could anyone help me on how to add "-lz" to it? Or any other suggestions for compiling Indri 5.9. Thanks a lot!