Question

I am an autotools newb and I have difficulties figuring out howto easily link a specific library into one of the configured targets.

I have a source package that I want to build the usual way: ./configure && make && make install

Unfortunately one of the cpps has a missing reference to another library. Compiling it by hand (adjusting the commandline) works. But I would rather "patch" the compile script. Where is the standard place to edit linking references?

 undefined reference to `boost::system::get_system_category()

这是我的错误信息。

Answer 1

请在<代码>Makefile.am上添加有关<代码>-l的旗帜。 e.g:

AM_LDFLAGS = -lboost_system-mt

请注意,Boost图书馆一般以图形形式结束——这是标明建筑组合的系列信函。在上述例子中,数字为-mt。在您的安装中,情况可能有所不同(尽管在PPOSIXy系统,监文信息系统中通常有-mt的变量)。

我也这样做:

AM_LDFLAGS = -lboost_system$(BOOST_LIB_SUFFIX)

<代码>BOOST_LIB_SUFFIX是一个宝贵的变量(见AC_ARG_VAR),该变量为-mt。

Answer 2

使用<代码>ax_cxx_check_lib.m4 由于动力——系统没有任何可与<代码”相核对的“C”符号(无人驾驶名称)。 AC_CHECK_LIB:

下载上述档案和名称acinclude.m4,并将其列入m<4>。您的项目根基更重。



http://www.un.org/Depts/DGACM/index_spanish.htm

AC_LANG_PUSH([C++])

AX_CXX_CHECK_LIB([boost_system-mt],[boost::system::generic_category()],[BOOST_LIB_SUFFIX="-mt"],[BOOST_LIB_SUFFIX=""])

AC_LANG_POP([C++])

AC_SUBST(BOOST_LIB_SUFFIX)


在Makefile.am:

[artifact_name]_LDFLAGS = -lboost_system@BOOST_LIB_SUFFIX@

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