为什么自己编译的 aria2 体积很大

从 https://github.com/aria2/aria2 下载的源代码，依赖包已经安装在 Cent os 下使用命令

yum install gnutls-devel nettle-devel gmp-devel libssh2-devel c-ares-devel libxml2-devel zlib-devel sqlite-devel pkgconfig libgcrypt-devel libssl-devel libtool autoconf automake autotools autopoint

./configure后显示信息如下

    version:        1.0.1-DEV shared 0:1:0
    Host type:      x86_64-pc-linux-gnu
    Install prefix: /usr/local
    C compiler:     gcc
    CFlags:         -g -O2
    Library types:  Shared=yes, Static=yes
    CUnit:          no
    Nettle:         yes
    Build examples: yes

configure: summary of build options:

Build:          x86_64-pc-linux-gnu
Host:           x86_64-pc-linux-gnu
Target:         x86_64-pc-linux-gnu
Install prefix: /usr/local
CC:             gcc
CXX:            g++
CPP:            gcc -E
CXXFLAGS:       -g -O2
CFLAGS:         -g -O2
CPPFLAGS:
LDFLAGS:
LIBS:
DEFS:           -DHAVE_CONFIG_H
CXX1XCXXFLAGS:   -std=c++11
EXTRACXXFLAGS:   -pipe
EXTRACFLAGS:     -pipe
EXTRACPPFLAGS:
EXTRALDFLAGS:
EXTRALIBS:
WARNCXXFLAGS:
LibUV:          no (CFLAGS='' LIBS='')
SQLite3:        yes (CFLAGS=' ' LIBS='-lsqlite3  ')
SSL Support:    yes
AppleTLS:       no (LDFLAGS='')
WinTLS:         no (LIBS='')
GnuTLS:         yes (CFLAGS='-I/usr/include/p11-kit-1  ' LIBS='-lgnutls  ')
OpenSSL:        no (CFLAGS='' LIBS='')
CA Bundle:
LibNettle:      yes (CFLAGS=' ' LIBS='-lnettle  ')
LibGmp:         yes (CFLAGS='' LIBS='-lgmp')
LibGcrypt:      no (CFLAGS='' LIBS='')
LibXML2:        yes (CFLAGS='-I/usr/include/libxml2  ' LIBS='-lxml2  ')
LibExpat:       no (CFLAGS='' LIBS='')
LibCares:       yes (CFLAGS=' ' LIBS='-lcares  ')
Zlib:           yes (CFLAGS=' ' LIBS='-lz  ')
Libssh2:        yes (CFLAGS=' ' LIBS='-lssh2  ')
Tcmalloc:       no (CFLAGS='' LIBS='')
Jemalloc:       no (CFLAGS='' LIBS='')
Epoll:          yes
Bittorrent:     yes
Metalink:       yes
XML-RPC:        yes
Message Digest: libnettle
WebSocket:      yes (CFLAGS='-I$(top_builddir)/deps/wslay/lib/includes -I$(top_srcdir)/deps/wslay/lib/includes' LIBS='$(top_builddir)/deps/wslay/lib/libwslay.la')
Libaria2:       no (shared=yes static=no)
bash_completion dir: ${datarootdir}/doc/${PACKAGE_TARNAME}/bash_completion
Static build:   no

make 之后在 src 目录里面找到 aria2c，但是体积有 70 多 MB，通过 yum 安装的只有 2MB，但是 yum 安装的版本特别低。编译安装的在后台运行的时候占用内存达到 200MB，yum 安装的后台占用只有 10MB 左右。百度，谷歌都已经问过。请问一下怎么编译才能编译出 yum 安装的那样的小体积程序？