Package RGrace build failure report

Build errors
gdk_draw.c:3:21: gdk/gdk.h: No such file or directory
gdk_draw.c:4:21: gtk/gtk.h: No such file or directory
gdk_draw.c: In function `draw_rubber_box':
gdk_draw.c:9: error: `GtkWidget' undeclared (first use in this function)
gdk_draw.c:9: error: (Each undeclared identifier is reported only once
gdk_draw.c:9: error: for each function it appears in.)
gdk_draw.c:9: error: `drawing_widget' undeclared (first use in this function)
gdk_draw.c:9: error: parse error before ')' token
gdk_draw.c:10: error: `GdkColor' undeclared (first use in this function)
gdk_draw.c:11: error: `GdkGC' undeclared (first use in this function)
gdk_draw.c:11: error: `gc1' undeclared (first use in this function)
gdk_draw.c:12: error: `Color' undeclared (first use in this function)
gdk_draw.c:17: error: `GDK_XOR' undeclared (first use in this function)
gdk_draw.c:19: error: `GDK_LINE_SOLID' undeclared (first use in this function)
gdk_draw.c:19: error: `GDK_CAP_PROJECTING' undeclared (first use in this function)
gdk_draw.c:19: error: `GDK_JOIN_MITER' undeclared (first use in this function)
gdk_draw.c:20: error: `GDK_SOLID' undeclared (first use in this function)
make[1]: *** [gdk_draw.o] Error 1
ERROR: compilation failed for package 'RGrace'
Build output
* checking for file 'RGrace/DESCRIPTION' ... OK
* preparing 'RGrace':
* checking DESCRIPTION meta-information ... OK
* cleaning src
* checking whether 'INDEX' is up-to-date ... NO
* use '--force' to overwrite the existing 'INDEX'
* removing junk files
* checking for LF line-endings in source files
* checking for empty directories
* building binary distribution
* Installing *source* package 'RGrace' ...
** libs
gcc-3.3 -no-cpp-precomp -I/Library/Frameworks/R.framework/Resources/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/local/include -fno-common -g -O2 -c gdk_draw.c -o gdk_draw.o
** Removing '/private/tmp/Rinst.25303/RGrace'
ERROR
* installation failed