[gobject-introspection] Makefile.introspection: use $^, simplifying non-srcdir builds

[Johan Dahlin <johan src gnome org>]

commit 3e0b443cf552347ebda086cb16003a8d55222870
Author: Dan Winship <danw gnome org>
Date:   Wed Apr 21 14:55:17 2010 -0400

    Makefile.introspection: use $^, simplifying non-srcdir builds
    
    In the .gir-building rule, use "$^" to refer to the source files,
    since that automatically looks in both $(srcdir) and $(builddir). This
    is particularly important since certain generated files will be in
    $(builddir) when building from git, but in $(srcdir) when building
    from tarballs
    
    If you were previously prefixing $(srcdir) to the Foo_gir_FILES
    members by hand, you should stop now.
    
    (Also, removed the dependencies on $(INTROSPECTION_SCANNER) and
    $(INTROSPECTION_COMPILER) for the .gir/.typelib rules, since the
    scanner one was broken anyway, and we don't have that kind of
    dependency for other rules (eg, making .o files depend on
    /usr/bin/gcc).)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=616425

 Makefile.introspection |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/Makefile.introspection b/Makefile.introspection
index bf9957a..b23ac02 100644
--- a/Makefile.introspection
+++ b/Makefile.introspection
@@ -114,7 +114,7 @@ $(if $(or $($(_gir_name)_LIBS),
 # Only dependencies we know are actually filenames goes into _FILES, make
 # sure these are built before running the scanner. Libraries and programs
 # needs to be added manually.
-$(1): $$($(_gir_name)_FILES) $(INTROSPECTION_PARSER)
+$(1): $$($(_gir_name)_FILES)
 	$(_gir_silent_scanner) $(INTROSPECTION_SCANNER) $(INTROSPECTION_SCANNER_ARGS) \
 	  --namespace=$(_gir_namespace) \
 	  --nsversion=$(_gir_version) \
@@ -125,7 +125,7 @@ $(1): $$($(_gir_name)_FILES) $(INTROSPECTION_PARSER)
 	  $(_gir_includes) \
 	  $($(_gir_name)_SCANNERFLAGS) \
 	  $($(_gir_name)_CFLAGS) \
-	  $($(_gir_name)_FILES) \
+	  $$^ \
 	  --output $(1)
 endef
 
@@ -141,5 +141,5 @@ $(_gir_silent_compiler) $(INTROSPECTION_COMPILER) $(INTROSPECTION_COMPILER_ARGS)
 endef
 
 # Simple rule to compile a typelib.
-%.typelib: %.gir $(INTROSPECTION_COMPILER)
+%.typelib: %.gir
 	$(call introspection-compiler,$<,$@)