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Re: [libvirt] [PATCH] Report an error if no XDR library can be found



2009/12/22 Daniel P. Berrange <berrange redhat com>:
> On Tue, Dec 22, 2009 at 02:12:51AM +0100, Matthias Bolte wrote:
>> ---
>>  configure.in |    3 ++-
>>  1 files changed, 2 insertions(+), 1 deletions(-)
>>
>> diff --git a/configure.in b/configure.in
>> index 3be11f2..81548b8 100644
>> --- a/configure.in
>> +++ b/configure.in
>> @@ -116,7 +116,8 @@ dnl If portablexdr is installed, prefer that.
>>  dnl Otherwise try -lrpc (Cygwin) -lxdr (some MinGW), -lnsl (Solaris)
>>  dnl or none (most Unix)
>>  AC_CHECK_LIB([portablexdr],[xdrmem_create],[],[
>> -     AC_SEARCH_LIBS([xdrmem_create],[rpc xdr nsl])
>> +     AC_SEARCH_LIBS([xdrmem_create],[rpc xdr nsl],[],
>> +             [AC_MSG_ERROR([Cannot find a XDR library])])
>>       ])
>>
>>  AC_CHECK_LIB([intl],[gettext],[])
>
> Hmm, there is no xdr library required on Linux, so we don't want to
> throw an error in case. Its just part of glibc
>

When trying to compile libvirt on Windows libportablexdr for example
is necessary. On Linux I get this output in config log:

configure:41995: checking for xdrmem_create in -lportablexdr
configure:42030: gcc -o conftest -g -O2 conftest.c -lportablexdr >&5
/usr/bin/ld: cannot find -lportablexdr
collect2: ld returned 1 exit status
[...]
configure:42069: checking for library containing xdrmem_create
configure:42110: gcc -o conftest -g -O2 conftest.c >&5
configure:42117: $? = 0
configure:42148: result: none required

The first explicit check for libportablexdr fails, but the second test
succeeds and finds xdrmem_create from glibc.

Matthias


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