[Mesa-dev] [PATCH] configure.ac: Check for expat21 if expat is not found.

[Vinson Lee]

On Mon, Aug 7, 2017 at 8:18 AM, Emil Velikov <emil.l.velikov at gmail.com> wrote:
> On 5 August 2017 at 21:53, Vinson Lee <vlee at freedesktop.org> wrote:
>> Fixes build error on CentOS 6.9.
>>
>> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102052
>> Fixes: 5c007203b73d ("configure.ac: drop manual detection of expat header/library")
>> Signed-off-by: Vinson Lee <vlee at freedesktop.org>
>> ---
>>  configure.ac |    4 +++-
>>  1 files changed, 3 insertions(+), 1 deletions(-)
>>
>> diff --git a/configure.ac b/configure.ac
>> index 5b12dd8..0dfd47b 100644
>> --- a/configure.ac
>> +++ b/configure.ac
>> @@ -1792,7 +1792,9 @@ if test "x$with_dri_drivers" = xno; then
>>  fi
>>
>>  # Check for expat
>> -PKG_CHECK_MODULES([EXPAT], [expat])
>> +PKG_CHECK_MODULES([EXPAT], [expat],,
>> +    [PKG_CHECK_MODULES([EXPAT], [expat21])]
> Hmm... the CenOS guys have gone "interesting" ways with this.
>
> I doubt we have any actual users for such setups, so I'm wondering if
> you can keep a WA for this locally.
> Say simply create a link/copy?
>
> Thanks
> Emil

CentOS 6 and RHEL 6 have expat 2.0 by default. expat 2.0 does not
provide expat.pc.