Add check for GNU extensions to ftw()/nftw().

2007-05-14  Emmanuele Bassi  <ebassi@gnome.org>

	* configure.in: Add check for GNU extensions to ftw()/nftw().

	* gtk/gtksearchenginesimple.c: Fix compilation on systems with
	only POSIX-compliant ftw(). (#435797, based on a patch by
	Richard Hult)

svn path=/trunk/; revision=17844

3 files changed, 42 insertions, 8 deletions

diff --git a/ChangeLog b/ChangeLog
index 7c2b50d821..06c4eddf4b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2007-05-14  Emmanuele Bassi  <ebassi@gnome.org>
 
+	* configure.in: Add check for GNU extensions to ftw()/nftw().
+
+	* gtk/gtksearchenginesimple.c: Fix compilation on systems with
+	only POSIX-compliant ftw(). (#435797, based on a patch by
+	Richard Hult)
+
+2007-05-14  Emmanuele Bassi  <ebassi@gnome.org>
+
 	* gtk/gtkfilechooserdefault.c:
 	Convert the GtkTreeIter inside the sorting functions for the
 	search and recent modes. This doesn't yet fix the segfault when
diff --git a/configure.in b/configure.in
index 7113cec10d..90acb1c124 100644
--- a/configure.in
+++ b/configure.in
@@ -567,6 +567,17 @@ AC_CHECK_HEADERS(sys/time.h, AC_DEFINE(HAVE_SYS_TIME_H))
 AC_CHECK_HEADERS(unistd.h, AC_DEFINE(HAVE_UNISTD_H))
 AC_CHECK_HEADERS(ftw.h, AC_DEFINE(HAVE_FTW_H))
 
+AC_MSG_CHECKING([for GNU ftw extensions])
+AC_TRY_COMPILE([#define _XOPEN_SOURCE 500
+#define _GNU_SOURCE
+#include <ftw.h>], [int flags = FTW_ACTIONRETVAL;], gtk_ok=yes, gtk_ok=no)
+if test $gtk_ok = yes; then
+    AC_MSG_RESULT([yes])
+    AC_DEFINE(HAVE_GNU_FTW,1,[Have GNU ftw])
+else
+    AC_MSG_RESULT([no])
+fi
+
 saved_cflags="$CFLAGS"
 saved_ldflags="$LDFLAGS"
 
diff --git a/gtk/gtksearchenginesimple.c b/gtk/gtksearchenginesimple.c
index 26768488ee..ede5e85214 100644
--- a/gtk/gtksearchenginesimple.c
+++ b/gtk/gtksearchenginesimple.c
@@ -20,10 +20,17 @@
  * Based on nautilus-search-engine-simple.c
  */
 
+#include <config.h>
+
+#ifdef HAVE_GNU_FTW
 #define _XOPEN_SOURCE 500
 #define _GNU_SOURCE 
+#endif
+
+#ifdef HAVE_FTW_H
+#include <ftw.h>
+#endif
 
-#include <config.h>
 #include "gtksearchenginesimple.h"
 
 #define XDG_PREFIX _gtk_xdg
@@ -31,10 +38,6 @@
 
 #include <string.h>
 
-#ifdef HAVE_FTW_H
-#include <ftw.h>
-#endif
-
 #include <glib/gstrfuncs.h>
 
 #define BATCH_SIZE 500
@@ -205,9 +208,13 @@ search_visit_func (const char        *fpath,
   gboolean is_hidden;
   
   data = (SearchThreadData*)g_static_private_get (&search_thread_data);
-  
+
   if (data->cancelled)
+#ifdef HAVE_GNU_FTW
     return FTW_STOP;
+#else
+    return 1;
+#endif /* HAVE_GNU_FTW */
 
   name = strrchr (fpath, '/');
   if (name)
@@ -262,10 +269,14 @@ search_visit_func (const char        *fpath,
   if (data->n_processed_files > BATCH_SIZE)
     send_batch (data);
 
+#ifdef HAVE_GNU_FTW
   if (is_hidden)
     return FTW_SKIP_SUBTREE;
   else
     return FTW_CONTINUE;
+#else
+  return 0;
+#endif /* HAVE_GNU_FTW */
 }
 #endif /* HAVE_FTW_H */
 
@@ -279,12 +290,16 @@ search_thread_func (gpointer user_data)
   
   g_static_private_set (&search_thread_data, data, NULL);
 
-  nftw (data->path, search_visit_func, 20, FTW_ACTIONRETVAL | FTW_PHYS);
+  nftw (data->path, search_visit_func, 20,
+#ifdef HAVE_GNU_FTW
+        FTW_ACTIONRETVAL |
+#endif
+        FTW_PHYS);
 
   send_batch (data);
   
   g_idle_add (search_thread_done_idle, data);
-#endif
+#endif /* HAVE_FTW_H */
   
   return NULL;
 }