Fixed glibc 2.10 compiler problems (Fedora 11 and others) with scandir()

and strchr() (STR #2222).


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6833 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

CHANGES

@@ -1,5 +1,7 @@
 CHANGES IN FLTK 1.3.0
 
+	- Fixed glibc 2.10 compiler problems (Fedora 11 and others)
+	  with scandir() and strchr() (STR #2222)
 	- Corrected const methods of Fl_Text_{Buffer|Display|Selection}
 	  to be declared const, corrected an Fl_Text_Buffer attrib. typo
 	- Fixed OpenGL shared context handling (STR #2135)

configh.in

@@ -180,7 +180,8 @@
 #undef U64
 
 /*
- * HAVE_DIRENT_H, HAVE_SYS_NDIR_H, HAVE_SYS_DIR_H, HAVE_NDIR_H, HAVE_SCANDIR:
+ * HAVE_DIRENT_H, HAVE_SYS_NDIR_H, HAVE_SYS_DIR_H, HAVE_NDIR_H,
+ * HAVE_SCANDIR, HAVE_SCANDIR_POSIX:
  *
  * Where is <dirent.h> (used only by fl_file_chooser and scandir).
  */
@@ -190,6 +191,7 @@
 #undef HAVE_SYS_DIR_H
 #undef HAVE_NDIR_H
 #undef HAVE_SCANDIR
+#undef HAVE_SCANDIR_POSIX
 
 /*
  * Possibly missing sprintf-style functions:

configure.in

@@ -449,6 +449,26 @@ AC_CHECK_FUNC(scandir,
     else
         AC_DEFINE(HAVE_SCANDIR)
     fi)
+
+dnl Do we have the POSIX compatible scandir() prototype?
+AC_CACHE_CHECK([whether we have the POSIX compatible scandir() prototype],
+    ac_cv_cxx_scandir_posix,[
+	AC_LANG_SAVE
+	AC_LANG_CPLUSPLUS
+	AC_TRY_COMPILE([
+	  #include <dirent.h>
+	  int func (const char *d, dirent ***list, void *sort) {
+	    int n = scandir(d, list, 0, (int(*)(const dirent **, const dirent **))sort);
+	  }
+	],[
+	], ac_cv_cxx_scandir_posix=yes, ac_cv_cxx_scandir_posix=no)
+	AC_LANG_RESTORE
+    ])
+
+if test "$ac_cv_cxx_scandir_posix" = yes; then
+    AC_DEFINE(HAVE_SCANDIR_POSIX)
+fi
+
 AC_CHECK_FUNC(vsnprintf,[
     case "$uname" in
     	HP-UX*)

src/filename_list.cxx

@@ -77,8 +77,8 @@ int fl_filename_list(const char *d, dirent ***list,
                      Fl_File_Sort_F *sort) {
 #ifndef HAVE_SCANDIR
   int n = scandir(d, list, 0, sort);
-#elif defined(__hpux) || defined(__CYGWIN__)
-  // HP-UX, Cygwin define the comparison function like this:
+#elif defined(HAVE_SCANDIR_POSIX)
+  // POSIX (2008) defines the comparison function like this:
   int n = scandir(d, list, 0, (int(*)(const dirent **, const dirent **))sort);
 #elif defined(__osf__)
   // OSF, DU 4.0x

src/fl_set_fonts_xft.cxx

@@ -271,13 +271,13 @@ Fl_Font Fl::set_fonts(const char* pattern_name)
       // So the bit we want is up to the first comma - BUT some strings have
       // more than one name, separated by, guess what?, a comma...
       stop = start = first = 0;
-      stop = strchr((const char *)font, ',');
-      start = strchr((const char *)font, ':');
+      stop = strchr((char *)font, ',');
+      start = strchr((char *)font, ':');
       if ((stop) && (start) && (stop < start))
       {
         first = stop + 1; // discard first version of name
         // find first comma *after* the end of the name
-        stop = strchr((const char *)start, ',');
+        stop = strchr((char *)start, ',');
       }
       else
       {