build: Calculate ABS_GLIB_RUNTIME_LIBDIR at build time

Rather than calculating it at configure time. This means it can expand
$libdir properly, and use the Make $(realpath) function rather than
invoking the non-portable `readlink -f`.

This fixes problems where `readlink` would be called on an invalid path
(due to a variable not being expanded) and would evaluate to "", which
would then cause things to be installed in the wrong place.

https://bugzilla.gnome.org/show_bug.cgi?id=744772

configure.ac

@@ -282,9 +282,7 @@ AC_ARG_WITH(runtime-libdir,
            [],
 	   [with_runtime_libdir=""])
 GLIB_RUNTIME_LIBDIR="$with_runtime_libdir"
-ABS_GLIB_RUNTIME_LIBDIR="`readlink -f $libdir/$with_runtime_libdir`"
 AC_SUBST(GLIB_RUNTIME_LIBDIR)
-AC_SUBST(ABS_GLIB_RUNTIME_LIBDIR)
 AM_CONDITIONAL(HAVE_GLIB_RUNTIME_LIBDIR, [test "x$with_runtime_libdir" != "x"])
 
 dnl Check for a working C++ compiler, but do not bail out, if none is found.
@@ -3395,7 +3393,6 @@ build/win32/vs11/Makefile
 build/win32/vs12/Makefile
 build/win32/vs14/Makefile
 glib/Makefile
-glib/glib.stp
 glib/libcharset/Makefile
 glib/gnulib/Makefile
 glib/pcre/Makefile
@@ -3404,7 +3401,6 @@ glib/tests/Makefile
 gmodule/Makefile
 gmodule/gmoduleconf.h
 gobject/Makefile
-gobject/gobject.stp
 gobject/glib-mkenums
 gobject/tests/Makefile
 gthread/Makefile

gio/Makefile.am

@@ -828,6 +828,12 @@ dist-hook: \
 	  if test -f $$f; then d=.; else d=$(srcdir); fi; \
 	  cp $$d/$$f $(distdir) || exit 1; done
 
+if HAVE_GLIB_RUNTIME_LIBDIR
+ABS_GLIB_RUNTIME_LIBDIR = $(realpath $(libdir)/$(GLIB_RUNTIME_LIBDIR))
+else
+ABS_GLIB_RUNTIME_LIBDIR = $(libdir)
+endif
+
 if HAVE_GLIB_RUNTIME_LIBDIR
 install-data-hook:
 	mkdir -p $(DESTDIR)$(libdir)/$(GLIB_RUNTIME_LIBDIR)

glib/Makefile.am

@@ -382,6 +382,14 @@ tapset_in_files = glib.stp.in
 tapsetdir   = @ABS_TAPSET_DIR@
 tapset_DATA = $(tapset_in_files:.stp.in=.stp)
 EXTRA_DIST += $(tapset_in_files)
+CLEANFILES += $(tapset_in_files:.stp.in=.stp)
+
+$(tapset_DATA): %.stp: %.stp.in Makefile
+	$(AM_V_GEN)$(SED) \
+		-e 's|[@]ABS_GLIB_RUNTIME_LIBDIR[@]|$(ABS_GLIB_RUNTIME_LIBDIR)|g' \
+		-e 's|[@]LT_CURRENT[@]|$(LT_CURRENT)|g' \
+		-e 's|[@]LT_REVISION[@]|$(LT_REVISION)|g' \
+		$< > $@
 endif
 
 gspawn-win32-helper-console.c:
@@ -473,6 +481,11 @@ dist_gdb_SCRIPTS = glib.py
 libglib-gdb.py: libglib-gdb.py.in
 	$(AM_V_GEN) $(SED) -e "s|\@datadir\@|$(datadir)|" $(srcdir)/libglib-gdb.py.in > $(builddir)/libglib-gdb.py
 
+if HAVE_GLIB_RUNTIME_LIBDIR
+ABS_GLIB_RUNTIME_LIBDIR = $(realpath $(libdir)/$(GLIB_RUNTIME_LIBDIR))
+else
+ABS_GLIB_RUNTIME_LIBDIR = $(libdir)
+endif
 
 install-data-hook: libglib-gdb.py
 	mkdir -p $(DESTDIR)$(datadir)/gdb/auto-load$(ABS_GLIB_RUNTIME_LIBDIR)

gobject/Makefile.am

@@ -130,6 +130,14 @@ tapset_in_files = gobject.stp.in
 tapsetdir   = @ABS_TAPSET_DIR@
 tapset_DATA = $(tapset_in_files:.stp.in=.stp)
 EXTRA_DIST += $(tapset_in_files)
+CLEANFILES += $(tapset_in_files:.stp.in=.stp)
+
+$(tapset_DATA): %.stp: %.stp.in Makefile
+	$(AM_V_GEN)$(SED) \
+		-e 's|[@]ABS_GLIB_RUNTIME_LIBDIR[@]|$(ABS_GLIB_RUNTIME_LIBDIR)|g' \
+		-e 's|[@]LT_CURRENT[@]|$(LT_CURRENT)|g' \
+		-e 's|[@]LT_REVISION[@]|$(LT_REVISION)|g' \
+		$< > $@
 endif
 
 # non-header sources (headers should be specified in the above variables)
@@ -260,6 +268,12 @@ libgobject-gdb.py: libgobject-gdb.py.in
 uninstall-gdb:
 	-rm -r $(DESTDIR)$(datadir)/gdb
 
+if HAVE_GLIB_RUNTIME_LIBDIR
+ABS_GLIB_RUNTIME_LIBDIR = $(realpath $(libdir)/$(GLIB_RUNTIME_LIBDIR))
+else
+ABS_GLIB_RUNTIME_LIBDIR = $(libdir)
+endif
+
 install-data-hook: libgobject-gdb.py
 	mkdir -p $(DESTDIR)$(datadir)/gdb/auto-load/$(ABS_GLIB_RUNTIME_LIBDIR)
 	$(INSTALL) $(builddir)/libgobject-gdb.py $(DESTDIR)$(datadir)/gdb/auto-load/$(ABS_GLIB_RUNTIME_LIBDIR)/libgobject-2.0.so.0.$(LT_CURRENT).$(LT_REVISION)-gdb.py