[PATCH] doc: Add config check for doxygen 1.8.0+.

[Jon A. Cruz]

I'd be fine with this being held off on. In general the next older
version support to hold the line at would be 1.6.1 as that's what is in
RHEL/CentOS/Scientific 6.

That makes me think perhaps I should first submit this updated to start
with a check for 1.6.0 and then leave bumping up to 1.8+ as a trivial
follow-up when the time is proper.


On 12/03/2014 12:39 PM, Bill Spitzak wrote:
> Thanks! You know I tried searching for "version" in the autotools
> documents, but did not find this. That documentation is pretty incomplete.
> 
> Note that as far as I can tell the only feature we are using is the
> tildes for code markup, and that is being questioned right now.
> 
> On 12/02/2014 09:48 PM, Jon A. Cruz wrote:
>> Add a config time check for a new enough (1.8.0+) version of doxygen.
>>
>> Signed-off-by: Jon A. Cruz <jonc at osg.samsung.com>
>> ---
>>   configure.ac | 8 ++++++++
>>   1 file changed, 8 insertions(+)
>>
>> diff --git a/configure.ac b/configure.ac
>> index 6f8220b..317cdae 100644
>> --- a/configure.ac
>> +++ b/configure.ac
>> @@ -109,6 +109,14 @@ if test "x$enable_documentation" = "xyes"; then
>>           AC_MSG_ERROR([Documentation build requested but doxygen not
>> found. Install doxygen or disable the documentation using
>> --disable-documentation])
>>       fi
>>
>> +    AC_MSG_CHECKING([for compatible doxygen version])
>> +    doxygen_version=`$DOXYGEN --version`
>> +    AS_VERSION_COMPARE([$doxygen_version], [1.8.0],
>> +                       [AC_MSG_RESULT([no])
>> +                        AC_MSG_ERROR([Doxygen $doxygen_version too
>> old. Doxygen 1.8+ required for documentation build. Install required
>> doxygen version or disable the documentation using
>> --disable-documentation])],
>> +                       [AC_MSG_RESULT([yes])],
>> +                       [AC_MSG_RESULT([yes])])
>> +
>>       AC_PATH_PROG(XMLTO, xmlto)
>>
>>       if test "x$XMLTO" = "x"; then
>>
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