[libsoup] Makefile.glib: support marking get_type as extern

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 35acf971258358bea5c5d8647fe0ef756d473b99
Author: Paolo Borelli <pborelli gnome org>
Date:   Tue Nov 3 11:45:26 2015 +0100

    Makefile.glib: support marking get_type as extern
    
    Add GLIB_MKENUMS_EXTERN to the template, so that a program can
    redefine it to ensure the function is exported in MSVC builds
    
    https://bugzilla.gnome.org/show_bug.cgi?id=757146

 Makefile.glib |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.glib b/Makefile.glib
index 9e06353..97e94b0 100644
--- a/Makefile.glib
+++ b/Makefile.glib
@@ -206,7 +206,8 @@ $(1).h.stamp: $(_glib_enum_types_h_sources) Makefile
                $$(GLIB_MKENUMS_H_FLAGS) \
                $$($(_glib_enum_types_prefix)_MKENUMS_H_FLAGS) \
                --fhead "#include <glib-object.h>\n\nG_BEGIN_DECLS\n" \
-               --vhead "GType @enum_name _get_type (void) G_GNUC_CONST;\n#define @ENUMPREFIX 
_TYPE_@ENUMSHORT@ (@enum_name _get_type ())\n" \
+               --fhead "#ifndef GLIB_MKENUMS_EXTERN\n#define GLIB_MKENUMS_EXTERN\n#endif\n" \
+               --vhead "GLIB_MKENUMS_EXTERN GType @enum_name _get_type (void) G_GNUC_CONST;\n#define 
@ENUMPREFIX _TYPE_@ENUMSHORT@ (@enum_name _get_type ())\n" \
                --ftail "G_END_DECLS\n\n#endif /* $(_glib_enum_types_guard) */" \
                $$(filter-out Makefile, $$^) > $(1).h.tmp && \
        (cmp -s $(1).h.tmp $(1).h || cp $(1).h.tmp $(1).h) && \