Re: gEDA: gd instead of libgdeda

[Wojciech Kazubski <wk-at-NOSPAMire_dot_pw_dot_edu_dot_pl>]

>Some linux distributions (as Fedora Core) do have gd library already 
>available. GD is also needed to build new version of pcb with gtk frontend. 
>The only differece between gd and libgdgeda is the direction of 
>drawing arcs. Libgeda can be modified to use original gd instead of libgdgeda 
>This requires changing only one line of C source and some modifications to 
>configure files.
>
Improved patch. Previous version did not have -lgd specified for linking

Wojciech Kazubski
--- libgeda-20060123/src/o_arc_basic.c.gd	2006-01-24 04:20:50.000000000 +0100
+++ libgeda-20060123/src/o_arc_basic.c	2006-04-28 00:53:58.000000000 +0200
@@ -1286,7 +1286,7 @@
 						o_current->line_width));
 
   gdImageArc(current_im_ptr,
-	     x, y, width, height, start_angle, end_angle, color);
+	     x, y, width, height, 720 - end_angle, 720 - start_angle, color);
 #endif
 
 }
--- libgeda-20060123/configure.ac.gd	2006-01-22 14:57:05.000000000 +0100
+++ libgeda-20060123/configure.ac	2006-04-28 01:07:41.000000000 +0200
@@ -21,8 +21,8 @@
 #########################################################################
 # Command line flags start
 # 
-# --disable-gdgeda : turn off libgdgeda support
-AC_ARG_ENABLE(gdgeda, [  --disable-gdgeda        Disable libgdgeda support (don't use libgdgeda at all)], 
+# --disable-gdgeda : turn off gd support
+AC_ARG_ENABLE(gdgeda, [  --disable-gdgeda        Disable gd support (don't use gd at all)], 
   [ if test $enableval = "no"; then no_gdgeda=yes; fi ])
 
 # Change default location for rc files
@@ -146,9 +146,9 @@
 ############################################################################
 
 ############################################################################
-# Check for libgdgeda start
+# Check for gd start
 # 
-AC_PATH_PROG(LIBGDGEDACONFIG, libgdgeda-config, no, ${PATH})
+AC_PATH_PROG(LIBGDGEDACONFIG, gdlib-config, no, ${PATH})
 
 if test "$LIBGDGEDACONFIG" = "no"
 then
@@ -159,7 +159,7 @@
 else
    if test "$no_gdgeda" = "yes" 
    then
-     echo found libgdgeda, but disabling gdgeda support.
+     echo found gd, but disabling gd support.
      GDGEDA_CFLAGS=
      GDGEDA_LIBS=
      GDGEDA_VERSION=
@@ -174,13 +174,14 @@
 
      # This is not really used to figure out paths, but just to make 
      # sure >= 2.0.15 is installed
-     PKG_CHECK_MODULES(libgdgeda, libgdgeda >= 2.0.15)
-     AC_DEFINE(HAS_LIBGDGEDA, 1, [If libgdgeda has been installed, define this])
+     # PKG_CHECK_MODULES(gd, gd >= 2.0.15)
+     GDGEDA_LIBS="-lgd $GDGEDA_LIBS"
+     AC_DEFINE(HAS_LIBGDGEDA, 1, [If gd has been installed, define this])
    fi
 fi
 
 # 
-# Check for libgdgeda end
+# Check for gd end
 ############################################################################
 
 ############################################################################
@@ -628,7 +629,7 @@
    GLIB library version:             $GLIB_VERSION
    GTK+ library version:             $GTK_VERSION
    GUILE library version:            $GUILE_VERSION
-   libgdgeda (png output):           $GDGEDA $GDGEDA_VERSION
+   gd (png output):           	     $GDGEDA $GDGEDA_VERSION
    mingw build:                      $MINGW
    data directory:                   $expandedGEDADATADIR
    rc directory:                     $expandedGEDARCDIR