diff --git a/Makefile b/Makefile
index 453d8d2f8b..03b03cea6f 100644
--- a/Makefile
+++ b/Makefile
@@ -526,6 +526,14 @@ endif
 endif
 CLEANOPTS=FPC=$(PPNEW)
 BUILDOPTS=FPC=$(PPNEW) FPCFPMAKE=$(FPCFPMAKENEW) RELEASE=1 'OPT=$(OPTNEW)' 'FPCMAKEOPT=$(OPT)'
+ifdef CROSSCOMPILE
+ifneq ($(CROSSASPROG),)
+BUILDOPTS+=ASPROG=$(CROSSASPROG)
+endif
+ifneq ($(CROSSASTARGET),)
+BUILDOPTS+=ASTARGET=$(CROSSASTARGET)
+endif
+endif
 INSTALLOPTS=FPC=$(PPNEW) ZIPDESTDIR=$(BASEDIR) FPCMAKE=$(FPCMAKENEW)
 BuildOnlyBaseCPUs=jvm
 ifneq ($(wildcard utils),)
diff --git a/Makefile.fpc b/Makefile.fpc
index 93e4b406e0..c03a7dccc0 100644
--- a/Makefile.fpc
+++ b/Makefile.fpc
@@ -220,6 +220,14 @@ endif
 
 CLEANOPTS=FPC=$(PPNEW)
 BUILDOPTS=FPC=$(PPNEW) FPCFPMAKE=$(FPCFPMAKENEW) RELEASE=1 'OPT=$(OPTNEW)' 'FPCMAKEOPT=$(OPT)'
+ifdef CROSSCOMPILE
+ifneq ($(CROSSASPROG),)
+BUILDOPTS+=ASPROG=$(CROSSASPROG)
+endif
+ifneq ($(CROSSASTARGET),)
+BUILDOPTS+=ASTARGET=$(CROSSASTARGET)
+endif
+endif
 INSTALLOPTS=FPC=$(PPNEW) ZIPDESTDIR=$(BASEDIR) FPCMAKE=$(FPCMAKENEW)
 
 # CPU targets for which we only build the compiler/rtl