[pango] build/Makefile.msvcproj: Don't Use realpath(1)

[Chun-wei Fan <fanchunwei src gnome org>]

commit 28df77e08b1f9c9ad27ba719465c2ff230516df0
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Apr 10 10:08:17 2015 +0800

    build/Makefile.msvcproj: Don't Use realpath(1)
    
    Apaprently there are many incompatible realpath(1) implementations out
    there, so things like --relative-to can't be assured to work everywhere,
    such as on Ubuntu.
    
    Instead, simply use the subst feature of automake to fulfil the same
    purpose, which is like what the rest of this file does, and follows the
    pattern of the introspection makefile, which this is modelled on.
    
    Also update the simple tutorial and clean up a bit, changing $(empty) to
    <nothing> as Behdad pointed out.
    
    This is also checked with 'make -j8 distcheck'.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=735039

 build/Makefile.msvcproj |   14 +++++---------
 1 files changed, 5 insertions(+), 9 deletions(-)
---
diff --git a/build/Makefile.msvcproj b/build/Makefile.msvcproj
index 0fe3107..5d9cdc5 100644
--- a/build/Makefile.msvcproj
+++ b/build/Makefile.msvcproj
@@ -10,19 +10,16 @@
 #
 # Add this to Makefile.am where your library/program is built:
 #   include $(top_srcdir)/build/Makefile.msvcproj
-#   MSVCPROJS = YourProject
+#   MSVCPROJS = YourProject (can be multiple projects in a single srcdir)
 #   YourProject_FILES = $(libyourlib_1_0_SOURCES)
 #   YourProject_EXCLUDES = ... # list of sources to exclude, separated by '|', wildcards allowed; use random 
unsed value if none
 #   YourProject_HEADERS_DIR = $(libyourlibincludedir)
 #   YourProject_HEADERS_INST = $(libyourlib_1_0_HEADERS)
 #   YourProject_HEADERS_EXCLUDES = ... # <list of headers to exclude from installation, separated by '|', 
wildcards allowed; use random unsed value if none>
 #
-#   dist-hook: \ # (or add to it if it is already there)
+#   dist-hook: \ # (or add to it if it is already there, note the vs9 items will also call the vs10 items in 
the process)
 #      $(top_builddir)/build/win32/vs9/YourProject.vcproj      \
-#      $(top_builddir)/build/win32/vs9/YourProject.headers     \
-#      $(top_builddir)/build/win32/vs10/YourProject.vcxproj    \
-#      $(top_builddir)/build/win32/vs10/YourProject.vcxproj.filters    \
-#      $(top_builddir)/build/win32/vs9/YourProject.vs10.headers
+#      $(top_builddir)/build/win32/vs9/YourProject.headers
 
 
 # Private functions
@@ -30,7 +27,7 @@
 ## Transform the MSVC project filename (no filename extensions) to something which can reference through a 
variable
 ## without automake/make complaining, eg Gtk-2.0 -> Gtk_2_0
 _proj_name=$(subst /,_,$(subst -,_,$(subst .,_,$(1))))
-_proj_path_raw:=$(shell realpath --relative-to=$(top_srcdir) $(srcdir))
+_proj_path_raw:=$(subst $(abs_top_srcdir)/,,$(abs_srcdir))
 _proj_path=$(subst /,\\,$(_proj_path_raw))
 _proj_subdir_int=$(if $(ifeq $(_proj_path),\.),\\,\\$(_proj_path)\\)
 _proj_subdir=$(subst \\.\\,\\,$(_proj_subdir_int))
@@ -43,8 +40,7 @@ _proj_headers_raw=$(subst /,\\,$($(_proj_name)_HEADERS_INST))
 _proj_headers=$(subst $(srcdir)\\,,$(subst $(builddir)\\,,$(subst 
$(top_builddir)\\$(_proj_path)\\,\\,$(_proj_headers_raw))))
 _proj_headers_excludes=$($(_proj_name)_HEADERS_EXCLUDES)
 
-empty:=
-_headers_dest_posix=$(subst $(includedir),$(empty),$($(_proj_name)_HEADERS_DIR))
+_headers_dest_posix=$(subst $(includedir),,$($(_proj_name)_HEADERS_DIR))
 _headers_destdir=$(subst /,\\,$(_headers_dest_posix))
 
 #