[PATCH] configure.ac: Link PSPPIRE explicitly against gthread.

[Ben Pfaff]

Seems to be required on OpenSUSE.

Reported by Mindaugas.
Bug #36396.
---
 configure.ac           |    3 +++
 src/ui/gui/automake.mk |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/configure.ac b/configure.ac
index 7d33ca2..2f3a8da 100644
--- a/configure.ac
+++ b/configure.ac
@@ -73,6 +73,9 @@ AC_ARG_WITH([gui],
 AM_CONDITIONAL([HAVE_GUI], 
                [test "$with_cairo" != no && test "$with_gui" != "no"])
 if test "$with_cairo" != no && test "$with_gui" != "no"; then
+  PKG_CHECK_MODULES([GTHREAD], [gthread-2.0], [],
+    [PSPP_REQUIRED_PREREQ([gthread 2.0 (or use --without-gui)])])
+
   PKG_CHECK_MODULES([GTK], [gtk+-2.0 >= 2.16], [],
     [PSPP_REQUIRED_PREREQ([gtk+ 2.0 version 2.16 or later (or use 
--without-gui)])])
 
diff --git a/src/ui/gui/automake.mk b/src/ui/gui/automake.mk
index 96209a0..a7cb1de 100644
--- a/src/ui/gui/automake.mk
+++ b/src/ui/gui/automake.mk
@@ -74,6 +74,7 @@ src_ui_gui_psppire_LDADD = \
        src/libpspp.la \
        src/libpspp-core.la \
        $(GTK_LIBS) \
+       $(GTHREAD_LIBS) \
        $(GTKSOURCEVIEW_LIBS) \
        $(CAIRO_LIBS) \
        $(LIBINTL) \
-- 
1.7.2.5