Makefile and cmake-conf: set CMAKE_SYSTEM_PROCESSOR

Makefile

@@ -735,6 +735,7 @@ build-only-$(1)_$(3): BUILD_$(if $(call seq,$(TARGET),$(BUILD)),NATIVE,CROSS) =
 build-only-$(1)_$(3): $(if $(findstring posix,$(TARGET)),POSIX,WIN32)_THREADS = TRUE
 build-only-$(1)_$(3): LIB_SUFFIX = $(if $(findstring shared,$(3)),dll,a)
 build-only-$(1)_$(3): BITS = $(if $(findstring x86_64,$(3)),64,32)
+build-only-$(1)_$(3): PROCESSOR = $(firstword $(call split,-,$(3)))
 build-only-$(1)_$(3): BUILD_TYPE = $(if $(findstring debug,$(3) $($(1)_CONFIGURE_OPTS)),debug,release)
 build-only-$(1)_$(3): BUILD_TYPE_SUFFIX = $(if $(findstring debug,$(3) $($(1)_CONFIGURE_OPTS)),d)
 build-only-$(1)_$(3): INSTALL_STRIP_TOOLCHAIN = install$(if $(STRIP_TOOLCHAIN),-strip)

src/cmake-conf.mk

@@ -23,6 +23,7 @@ define $(PKG)_BUILD
         -DCMAKE_SHARED_BOOL=$(CMAKE_SHARED_BOOL) \
         -DCMAKE_STATIC_BOOL=$(CMAKE_STATIC_BOOL) \
         -DLIBTYPE=$(if $(BUILD_SHARED),SHARED,STATIC) \
+        -DPROCESSOR=$(PROCESSOR) \
         -DPREFIX=$(PREFIX) \
         -DTARGET=$(TARGET) \
         -DBUILD=$(BUILD) \

src/cmake/conf/mxe-conf.cmake.in

@@ -24,6 +24,7 @@ endif()
 
 ## General configuration
 set(CMAKE_SYSTEM_NAME Windows)
+set(CMAKE_SYSTEM_PROCESSOR @PROCESSOR@)
 set(MSYS 1)
 set(CMAKE_EXPORT_NO_PACKAGE_REGISTRY ON)
 # Workaround for https://www.cmake.org/Bug/view.php?id=14075