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Re: Issue with AC_LANG_PROGRAM
From: |
Eric Blake |
Subject: |
Re: Issue with AC_LANG_PROGRAM |
Date: |
Thu, 18 Jul 2013 06:08:27 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 |
On 07/18/2013 03:36 AM, Miguel Guedes wrote:
> Hello,
>
>
> I am using AC_LANG_PROGRAM to test for libboost_system and it invokes
> gcc/g++ in the following way:
>
> configure:3975: g++ -o conftest -g -O2 -lboost_system conftest.cpp
>
> The above results in a few errors and doesn't link even though the
> library in question is present in the system. This is because the
> source file should be at the front in the call to g++, e.g.:
>
> g++ conftest.cpp -o conftest -g -O2 -lboost_system
That's probably because you put -lboost_system into LDFLAGS instead of
the proper LIBS (LDFLAGS is for -L/path, LIBS for -llib).
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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