The two files I found that would need changes [they referenced LD_LIBRARY_PATH] were makefile.rules and GNUmakefile.cfg, both of which have at least one platform specific block.

That is what was done in one of the cases in the run block of GNUmakefile.cfg for LD_LIBRARY_PATH and LIBPATH. I don't see any motivating reason to avoid doing the same.

In my testing that seems to work just fine. You might have a look at the patch shown below.

Index: gcc.config =================================================================== --- gcc.config (revision 652071) +++ gcc.config (working copy) @@ -93,16 +93,13 @@ endif endif

-ifneq ($(OSNAME),Darwin) +ifeq ($(OSNAME),Darwin) # no -shared option for GCC on Mac OS X (Darwin) - LDSOFLAGS = -shared + LDSOFLAGS = -dynamiclib + LDSOFLAGS += -compatibility_version 4 -current_version $(LIBVER) else # Flags needed when linking the library - LDSOFLAGS = \ --dynamiclib \ --install_name $(BUILDDIR)/lib/$(LIBNAME) \ --compatibility_version 4 \ --current_version $(LIBVER) + LDSOFLAGS = -shared endif

Index: GNUmakefile.cfg =================================================================== --- GNUmakefile.cfg (revision 652071) +++ GNUmakefile.cfg (working copy) @@ -249,9 +249,10 @@ test -f $$file.o -a ! $$? -eq 0 ; \ else \ echo "./$$file" >>$(LOGFILE) ; \ + DYLD_LIBRARY_PATH=$$DYLD_LIBRARY_PATH:. ;