[7768] set TEXINFO_XS in configure

[gavinsmith0123]

Revision: 7768
          http://svn.sv.gnu.org/viewvc/?view=rev&root=texinfo&revision=7768
Author:   gavin
Date:     2017-05-02 16:09:30 -0400 (Tue, 02 May 2017)
Log Message:
-----------
set TEXINFO_XS in configure

Modified Paths:
--------------
    trunk/ChangeLog
    trunk/configure.ac

Modified: trunk/ChangeLog
===================================================================
--- trunk/ChangeLog     2017-05-01 10:17:00 UTC (rev 7767)
+++ trunk/ChangeLog     2017-05-02 20:09:30 UTC (rev 7768)
@@ -1,3 +1,10 @@
+2017-05-02  Gavin Smith  <address@hidden>
+
+       * configure.ac: When checking for Perl XS support, set
+       TEXINFO_XS environment variable in order to get more
+       information printed (and also to negate any pre-existing
+       definition for this variable).
+
 2017-05-01  Eli Zaretskii  <address@hidden>
 
        * tp/Texinfo/MiscXS/misc.c (xs_unicode_text): Fix a typo in a

Modified: trunk/configure.ac
===================================================================
--- trunk/configure.ac  2017-05-01 10:17:00 UTC (rev 7767)
+++ trunk/configure.ac  2017-05-02 20:09:30 UTC (rev 7768)
@@ -392,6 +392,7 @@
   (cd tp/Texinfo/Convert/XSParagraph \
    && make clean \
    && make TestXS.la \
+   && TEXINFO_XS=debug ; export TEXINFO_XS \
    && ${PERL} -I . \
               -I ${xs_srcdir} \
               -w ${xs_srcdir}/Texinfo/Convert/XSParagraph/fail.pl \