Compile without GLib (without pain)

configure.ac

@@ -40,14 +40,30 @@ AC_ARG_ENABLE(opencl,
  have_opencl=true],
 [AC_MSG_RESULT([no])])
 
+haveglib=false
 havegtk=false
-AM_PATH_GTK_2_0(2.0.0, havegtk=true,
-AC_MSG_WARN([GTK not found.  hdfsee will not be built.]))
+AC_MSG_CHECKING([whether to use GTK/GLib])
+AC_ARG_ENABLE(gtk,
+   [AC_HELP_STRING([--disable-gtk], [Disable GTK+/GLib])],
+   [
+      AC_MSG_RESULT([yes])
+      AM_PATH_GTK_2_0(2.0.0,
+      [
+         havegtk=true
+         haveglib=true
+         AC_DEFINE([HAVE_GLIB], [1], [Define to 1 if GLib is available])
+         GTK_LIBS="$GTK_LIBS -lgthread-2.0 -lutil"
+      ],
+      AC_MSG_WARN([GTK not found.  hdfsee will not be built.]))
+   ],
+   [AC_MSG_RESULT([no])]
+)
 
 AM_CONDITIONAL([HAVE_GTK], test x$havegtk = xtrue)
+AM_CONDITIONAL([HAVE_GLIB], test x$haveglib = xtrue)
 AM_CONDITIONAL([HAVE_OPENCL], test x$have_opencl = xtrue)
 
 CFLAGS="$CFLAGS $HDF5_CFLAGS $GTK_CFLAGS $GSL_CFLAGS $OPENCL_CFLAGS"
-LIBS="$LIBS $HDF5_LIBS -lm -lz $GSL_LIBS $GTK_LIBS $OPENCL_LIBS -lgthread-2.0 -lutil"
+LIBS="$LIBS $HDF5_LIBS -lm -lz $GSL_LIBS $GTK_LIBS $OPENCL_LIBS"
 
 AC_OUTPUT(Makefile src/Makefile data/Makefile)

src/Makefile.am

@@ -21,11 +21,15 @@ process_hkl_SOURCES = process_hkl.c sfac.c statistics.c cell.c utils.c \
                       reflections.c
 process_hkl_LDADD = @LIBS@
 
-indexamajig_SOURCES = indexamajig.c hdf5-file.c utils.c dirax.c cell.c image.c \
+indexamajig_SOURCES = indexamajig.c hdf5-file.c utils.c cell.c image.c \
                       intensities.c peaks.c index.c filters.c \
                       diffraction.c detector.c sfac.c
 indexamajig_LDADD = @LIBS@
 
+if HAVE_GLIB
+indexamajig_SOURCES += dirax.c
+endif
+
 if HAVE_GTK
 hdfsee_SOURCES = hdfsee.c displaywindow.c render.c hdf5-file.c utils.c image.c \
                  filters.c
@@ -39,7 +43,11 @@ compare_hkl_SOURCES = compare_hkl.c sfac.c cell.c utils.c reflections.c
 compare_hkl_LDADD = @LIBS@
 
 powder_plot_SOURCES = powder_plot.c cell.c utils.c image.c hdf5-file.c \
-                      detector.c index.c diffraction.c sfac.c dirax.c
+                      detector.c index.c diffraction.c sfac.c
 powder_plot_LDADD = @LIBS@
 
+if HAVE_GLIB
+powder_plot_SOURCES += dirax.c
+endif
+
 INCLUDES = "-I$(top_srcdir)/data"

src/dirax.h

@@ -17,8 +17,19 @@
 #include <config.h>
 #endif
 
+#include "utils.h"
+
+#if HAVE_GLIB
 
 extern void run_dirax(struct image *image);
 
+#else
+
+static void run_dirax(struct image *image)
+{
+	ERROR("Can't run DirAx without GLib.\n");
+}
+
+#endif
 
 #endif	/* DIRAX_H */

src/image.h

@@ -19,7 +19,10 @@
 
 #include <stdint.h>
 #include <complex.h>
+
+#if HAVE_GLIB
 #include <glib.h>
+#endif
 
 #include "utils.h"
 #include "cell.h"
@@ -86,6 +89,7 @@ struct image {
 	ImageFeatureList	*rflist;	/* "Predicted" features */
 
 	/* DirAx auto-indexing low-level stuff */
+#if HAVE_GLIB
 	GIOChannel		*dirax;
 	int			dirax_pty;
 	pid_t			dirax_pid;
@@ -97,6 +101,7 @@ struct image {
 	/* DirAx auto-indexing high-level stuff */
 	int			dirax_step;
 	int			dirax_read_cell;
+#endif
 };
 
 /* An opaque type representing a list of images */