depends: remove (darwin) libtool now that it's no longer used

Note that this is completely unrelated to gnu usage of libtool.

depends/builders/darwin.mk

@@ -16,7 +16,6 @@ darwin_CXX:=$(shell xcrun -f clang++) -stdlib=libc++ -isysroot$(shell xcrun --sh
 darwin_AR:=$(shell xcrun -f ar)
 darwin_RANLIB:=$(shell xcrun -f ranlib)
 darwin_STRIP:=$(shell xcrun -f strip)
-darwin_LIBTOOL:=$(shell xcrun -f libtool)
 darwin_OTOOL:=$(shell xcrun -f otool)
 darwin_NM:=$(shell xcrun -f nm)
 darwin_INSTALL_NAME_TOOL:=$(shell xcrun -f install_name_tool)

depends/funcs.mk

@@ -6,7 +6,6 @@ $(1)_objc=$$($$($(1)_type)_OBJC)
 $(1)_objcxx=$$($$($(1)_type)_OBJCXX)
 $(1)_ar=$$($$($(1)_type)_AR)
 $(1)_ranlib=$$($$($(1)_type)_RANLIB)
-$(1)_libtool=$$($$($(1)_type)_LIBTOOL)
 $(1)_nm=$$($$($(1)_type)_NM)
 $(1)_cflags=$$($$($(1)_type)_CFLAGS) \
             $$($$($(1)_type)_$$(release_type)_CFLAGS)

depends/hosts/default.mk

@@ -7,7 +7,6 @@ default_host_CXX = $(host_toolchain)g++
 default_host_AR = $(host_toolchain)ar
 default_host_RANLIB = $(host_toolchain)ranlib
 default_host_STRIP = $(host_toolchain)strip
-default_host_LIBTOOL = $(host_toolchain)libtool
 default_host_NM = $(host_toolchain)nm
 default_host_OBJCOPY = $(host_toolchain)objcopy
 
@@ -39,5 +38,5 @@ host_$1 = $$($(host_arch)_$(host_os)_$1)
 host_$(release_type)_$1 = $$($(host_arch)_$(host_os)_$(release_type)_$1)
 endef
 
-$(foreach tool,CC CXX AR RANLIB STRIP LIBTOOL NM OBJCOPY OTOOL INSTALL_NAME_TOOL DSYMUTIL,$(eval $(call add_host_tool_func,$(tool))))
+$(foreach tool,CC CXX AR RANLIB STRIP NM OBJCOPY OTOOL INSTALL_NAME_TOOL DSYMUTIL,$(eval $(call add_host_tool_func,$(tool))))
 $(foreach flags,CFLAGS CXXFLAGS CPPFLAGS LDFLAGS, $(eval $(call add_host_flags_func,$(flags))))

depends/packages.md

@@ -74,7 +74,6 @@ These variables may be set to override or append their default values.
     $(package)_objcxx
     $(package)_ar
     $(package)_ranlib
-    $(package)_libtool
     $(package)_nm
     $(package)_cflags
     $(package)_cxxflags