build: Better support meson cross compilation.

build/makefile_base.mak

@@ -739,16 +739,12 @@ $(OBJ)/.vrclient-post-source:
 ## dxvk
 ##
 
-DXVK_MESON_ARGS32 = \
-    --bindir=$(DXVK_DST32)/lib/wine/dxvk \
-    --cross-file=$(DXVK_OBJ32)/build-win32.txt
-DXVK_MESON_ARGS64 = \
-    --bindir=$(DXVK_DST64)/lib64/wine/dxvk \
-    --cross-file=$(DXVK_OBJ64)/build-win64.txt
+DXVK_MESON_ARGS32 = --bindir=$(DXVK_DST32)/lib/wine/dxvk
+DXVK_MESON_ARGS64 = --bindir=$(DXVK_DST64)/lib64/wine/dxvk
 
 $(eval $(call rules-source,dxvk,$(SRCDIR)/dxvk))
-$(eval $(call rules-meson,dxvk,32))
-$(eval $(call rules-meson,dxvk,64))
+$(eval $(call rules-meson,dxvk,32,CROSS))
+$(eval $(call rules-meson,dxvk,64,CROSS))
 
 $(OBJ)/.dxvk-post-build64:
 	mkdir -p "$(DST_DIR)"/lib64/wine/dxvk
@@ -765,16 +761,12 @@ $(OBJ)/.dxvk-post-build32:
 ## dxvk-nvapi
 ##
 
-DXVK_NVAPI_MESON_ARGS32 = \
-    --bindir=$(DXVK_NVAPI_DST32)/lib/wine/nvapi \
-    --cross-file=$(DXVK_NVAPI_OBJ32)/build-win32.txt
-DXVK_NVAPI_MESON_ARGS64 = \
-    --bindir=$(DXVK_NVAPI_DST64)/lib64/wine/nvapi \
-    --cross-file=$(DXVK_NVAPI_OBJ64)/build-win64.txt
+DXVK_NVAPI_MESON_ARGS32 = --bindir=$(DXVK_NVAPI_DST32)/lib/wine/nvapi
+DXVK_NVAPI_MESON_ARGS64 = --bindir=$(DXVK_NVAPI_DST64)/lib64/wine/nvapi
 
 $(eval $(call rules-source,dxvk-nvapi,$(SRCDIR)/dxvk-nvapi))
-$(eval $(call rules-meson,dxvk-nvapi,32))
-$(eval $(call rules-meson,dxvk-nvapi,64))
+$(eval $(call rules-meson,dxvk-nvapi,32,CROSS))
+$(eval $(call rules-meson,dxvk-nvapi,64,CROSS))
 
 $(OBJ)/.dxvk-nvapi-post-build64:
 	mkdir -p "$(DST_DIR)"/lib64/wine/nvapi
@@ -850,16 +842,12 @@ VKD3D_PROTON_SOURCE_ARGS = \
   --exclude vkd3d_version.h.in \
 
 VKD3D_PROTON_MESON_ARGS = -Denable_standalone_d3d12=true
-VKD3D_PROTON_MESON_ARGS32 = \
-    --bindir=$(VKD3D_PROTON_DST32)/lib/wine/vkd3d-proton \
-    --cross-file=$(VKD3D_PROTON_OBJ32)/build-win32.txt
-VKD3D_PROTON_MESON_ARGS64 = \
-    --bindir=$(VKD3D_PROTON_DST64)/lib64/wine/vkd3d-proton \
-    --cross-file=$(VKD3D_PROTON_OBJ64)/build-win64.txt
+VKD3D_PROTON_MESON_ARGS32 = --bindir=$(VKD3D_PROTON_DST32)/lib/wine/vkd3d-proton
+VKD3D_PROTON_MESON_ARGS64 = --bindir=$(VKD3D_PROTON_DST64)/lib64/wine/vkd3d-proton
 
 $(eval $(call rules-source,vkd3d-proton,$(SRCDIR)/vkd3d-proton))
-$(eval $(call rules-meson,vkd3d-proton,32))
-$(eval $(call rules-meson,vkd3d-proton,64))
+$(eval $(call rules-meson,vkd3d-proton,32,CROSS))
+$(eval $(call rules-meson,vkd3d-proton,64,CROSS))
 
 $(OBJ)/.vkd3d-proton-post-source:
 	sed -re 's#@VCS_TAG@#$(shell git -C $(SRCDIR)/vkd3d-proton describe --always --exclude=* --abbrev=15 --dirty=0)#' \

make/rules-common.mk

@@ -114,6 +114,9 @@ $(2)_LIBFLAGS$(3) = $$(foreach d,$$($(2)_DEPS$(3)),-L$$($$(d)_LIBDIR$(3))) \
 # PKG_CONFIG is intentionally never using CROSS target, as it's missing
 # wrapper scripts in the toolchain, we use PKG_CONFIG_LIBDIR directly
 # instead.
+#
+# RC and WIDL are intentionally always using CROSS target, as their
+# native version doesn't exist.
 
 $(2)_ENV$(3) = \
     CARGO_HOME=$$(OBJ)/.cargo \
@@ -125,6 +128,8 @@ $(2)_ENV$(3) = \
     CC="$$(TARGET_$(4)$(3))-gcc" \
     CXX="$$(TARGET_$(4)$(3))-g++" \
     LD="$$(TARGET_$(4)$(3))-ld" \
+    RC="$$(TARGET_CROSS$(3))-windres" \
+    WIDL="$$(TARGET_CROSS$(3))-widl" \
     PKG_CONFIG="$$(TARGET_$(3))-pkg-config" \
     PATH="$$(call list-join,:,$$(foreach d,$$($(2)_DEPS$(3)),$$($$(d)_BINDIR$(3))),,:):$$(SRC)/glslang/bin:$$$$PATH" \
     LD_LIBRARY_PATH="$$(call list-join,:,$$(foreach d,$$($(2)_DEPS$(3)),$$($$(d)_LIBDIR$(3))),,:)$$$$LD_LIBRARY_PATH" \

make/rules-meson.mk

@@ -2,26 +2,55 @@
 #   $(1): lowercase package name
 #   $(2): uppercase package name
 #   $(3): 32/64, build type
+#   $(4): CROSS/<empty>, cross compile
 #
 define create-rules-meson
+# Don't pass CROSS here, we need a native environment and we'll handle
+# cross compilation below with the CROSS-prefixed variables.
 $(call create-rules-common,$(1),$(2),$(3))
 
+define $(2)_MESON_CROSS$(3)
+cat <<EOF
+[binaries]
+ar = '$$$$CROSSAR'
+c = '$$$$CROSSCC'
+cpp = '$$$$CROSSCXX'
+ld = '$$$$CROSSLD'
+windres = '$$$$RC'
+strip = '$$$$STRIP'
+widl = '$$$$WIDL'
+pkgconfig = '$$$$PKG_CONFIG'
+
+[properties]
+needs_exe_wrapper = true
+c_args = [$$(call list-quote,$$($(2)_INCFLAGS$(3)) $$($(2)_CPPFLAGS) $$(COMMON_FLAGS) $$(COMMON_FLAGS$(3)))]
+cpp_args = [$$(call list-quote,$$($(2)_INCFLAGS$(3)) $$($(2)_CPPFLAGS) $$(COMMON_FLAGS) $$(COMMON_FLAGS$(3)) -std=c++17)]
+link_args = [$$(call list-quote,$$($(2)_LIBFLAGS$(3)) $$($(2)_LDFLAGS$(3)) $$($(2)_LDFLAGS) $$(CROSSLDFLAGS))]
+pkg_config_libdir = '$$$$CROSSPKG_CONFIG_LIBDIR'
+
+[host_machine]
+system = 'windows'
+cpu_family = '$$(MESON_CPU$(3))'
+cpu = '$$(MESON_CPU$(3))'
+endian = 'little'
+EOF
+endef
+
+export $(2)_MESON_CROSS$(3)
+
 ifeq ($(CONTAINER),1)
 $$(OBJ)/.$(1)-configure$(3): $$($(2)_SRC)/meson.build
 	@echo ":: configuring $(3)bit $(1)..." >&2
 	rm -rf "$$($(2)_OBJ$(3))/meson-private/coredata.dat"
 
-	grep -s -v -e c_args -e cpp_args -e link_args "$$($(2)_SRC)/build-win$(3).txt" | \
-	sed -e "s:\[properties\]:[properties]\nc_args = [$$(call list-quote,$$(COMMON_FLAGS))]:" \
-	    -e "s:\[properties\]:[properties]\ncpp_args = [$$(call list-quote,$$(COMMON_FLAGS))]:" \
-	    -e "s:\[properties\]:[properties]\nlink_args = [$$(call list-quote,$$(CROSSLDFLAGS))]:" \
-	  > "$$($(2)_OBJ$(3))/build-win$(3).txt"
+	echo "$$$$$(2)_MESON_CROSS$(3)" | env $$($(2)_ENV$(3)) sh >"$$($(2)_OBJ$(3))/cross-$(3).txt"
 
 	env $$($(2)_ENV$(3)) \
 	meson "$$($(2)_OBJ$(3))" "$$($(2)_SRC)" \
 	      --prefix="$$($(2)_DST$(3))" \
 	      --libdir="lib$(subst 32,,$(3))" \
 	      --buildtype=plain \
+	      $(if $(4),--cross-file="$$($(2)_OBJ$(3))/cross-$(3).txt",) \
 	      $$($(2)_MESON_ARGS) \
 	      $$($(2)_MESON_ARGS$(3)) \
 	      $$(MESON_STRIP_ARG)
@@ -36,4 +65,7 @@ $$(OBJ)/.$(1)-build$(3):
 endif
 endef
 
-rules-meson = $(call create-rules-meson,$(1),$(call toupper,$(1)),$(2))
+MESON_CPU32 = x86
+MESON_CPU64 = x86_64
+
+rules-meson = $(call create-rules-meson,$(1),$(call toupper,$(1)),$(2),$(3))