Disabled external gits

cs440-acg/ext/openexr/OpenEXR_Viewers/m4/path.fltk.m4

@@ -0,0 +1,81 @@
+dnl
+dnl FLTK with GL support
+dnl
+
+AC_DEFUN([AM_PATH_FLTK],
+[dnl 
+dnl Get the cflags and libraries
+dnl
+AC_ARG_VAR(FLTK_CONFIG, Path to fltk-config command)
+AC_PATH_PROG(FLTK_CONFIG, fltk-config, no, [$PATH:/usr/local/bin])
+AC_ARG_WITH(fltk-config,[  --with-fltk-config=PATH Specify which fltk-config to use (optional)], FLTK_CONFIG="$withval",)
+
+  if test x$FLTK_CONFIG != xno ; then
+    FLTK_CXXFLAGS="`$FLTK_CONFIG --use-gl --cxxflags`"
+    FLTK_LDFLAGS="`$FLTK_CONFIG --use-gl --ldflags`"
+  else
+    FLTK_CXXFLAGS=""
+    FLTK_LDFLAGS=""
+  fi
+
+  AC_MSG_CHECKING(for FLTK with GL support)
+  no_fltk=""
+
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  ac_save_LDFLAGS="$LDFLAGS"
+  CXXFLAGS="$CXXFLAGS $FLTK_CXXFLAGS"
+  LDFLAGS="$LDFLAGS $FLTK_LDFLAGS"
+
+dnl
+dnl Now check if the installed FLTK has GL support
+dnl
+  AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  AC_TRY_LINK([
+#include <stdlib.h>
+#include <FL/Fl.H>
+#include <FL/Fl_Gl_Window.H>],
+[
+    Fl_Gl_Window foo (); 
+],, no_fltk=yes)
+  AC_LANG_RESTORE
+  CXXFLAGS="$ac_save_CXXFLAGS"
+  LDFLAGS="$ac_save_LDFLAGS"
+  
+  if test "x$no_fltk" = "x" ; then
+    AC_MSG_RESULT(yes)
+     ifelse([$1], , :, [$1])     
+  else
+    AC_MSG_RESULT(no)
+    echo "*** The fltk test program could not be compiled.  Possible reasons:"
+    echo "***"
+    echo "***     - FLTK is not installed."
+    echo "***     - Your version of FLTK does not support OpenGL."
+    echo "***     - configure cannot find your 'fltk-config' program (use"
+    echo "***       the --with-fltk-config option to tell configure where"
+    echo "***       to find it)."
+    echo "***     - Your version of FLTK is too old.  The exrdisplay"
+    echo "***       program requires FLTK 1.1 or higher."
+    echo "***     - Your FLTK library was compiled with a different C++"
+    echo "***       compiler than the one you're using to compile OpenEXR."
+    echo "***"
+    echo "*** The exrdisplay program will not be built because it depends on"
+    echo "*** a working FLTK install with OpenGL support."
+    FLTK_CXXFLAGS=""
+    FLTK_LDFLAGS=""
+    ifelse([$2], , :, [$2])
+  fi
+  AC_SUBST(FLTK_CXXFLAGS)
+  AC_SUBST(FLTK_LDFLAGS)
+  
+AC_MSG_RESULT([
+---------------------------------------------
+Fltk setup:
+
+FLTK_CXXFLAGS		$FLTK_CXXFLAGS
+FLTK_LDFLAGS            $FLTK_LDFLAGS
+---------------------------------------------
+])
+  
+  
+])