depends: bring back LD64_VERSION

This was erroneously removed, we need this when cross-compiling to
retain access to modern linker capabilities

depends/hosts/darwin.mk

@@ -1,12 +1,13 @@
 OSX_MIN_VERSION=10.8
 OSX_SDK_VERSION=10.11
 OSX_SDK=$(SDK_PATH)/MacOSX$(OSX_SDK_VERSION).sdk
+LD64_VERSION=253.9
 
 clang_prog=$(build_prefix)/bin/clang
 clangxx_prog=$(clang_prog)++
 
-darwin_CC=$(build_prefix)/bin/clang -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK)
-darwin_CXX=$(clang_prog)++ -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -stdlib=libc++
+darwin_CC=$(build_prefix)/bin/clang -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -mlinker-version=$(LD64_VERSION)
+darwin_CXX=$(clang_prog)++ -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -mlinker-version=$(LD64_VERSION) -stdlib=libc++
 
 darwin_CFLAGS=-pipe
 darwin_CXXFLAGS=$(darwin_CFLAGS)

depends/packages/qt.mk

@@ -87,6 +87,7 @@ $(package)_config_opts_darwin += -device-option MAC_SDK_VERSION=$(OSX_SDK_VERSIO
 $(package)_config_opts_darwin += -device-option CROSS_COMPILE="$(host)-"
 $(package)_config_opts_darwin += -device-option MAC_MIN_VERSION=$(OSX_MIN_VERSION)
 $(package)_config_opts_darwin += -device-option MAC_TARGET=$(host)
+$(package)_config_opts_darwin += -device-option MAC_LD64_VERSION=$(LD64_VERSION)
 endif
 
 $(package)_config_opts_linux = -qt-xcb

depends/patches/qt/mac-qmake.conf

@@ -17,7 +17,7 @@ QMAKE_MAC_SDK.macosx.PlatformPath = /phony
 !host_build: QMAKE_CFLAGS += -target $${MAC_TARGET}
 !host_build: QMAKE_OBJECTIVE_CFLAGS += $$QMAKE_CFLAGS
 !host_build: QMAKE_CXXFLAGS += $$QMAKE_CFLAGS
-!host_build: QMAKE_LFLAGS += -target $${MAC_TARGET}
+!host_build: QMAKE_LFLAGS += -target $${MAC_TARGET} -mlinker-version=$${MAC_LD64_VERSION}
 QMAKE_AR = $${CROSS_COMPILE}ar cq
 QMAKE_RANLIB=$${CROSS_COMPILE}ranlib
 QMAKE_LIBTOOL=$${CROSS_COMPILE}libtool