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？