Re: Issue with AC_LANG_PROGRAM

[Eric Blake]

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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