diff --git a/binfmt/Makefile b/binfmt/Makefile
index 3a6a1dff3d7..fbca62866b1 100644
--- a/binfmt/Makefile
+++ b/binfmt/Makefile
@@ -38,22 +38,22 @@ include $(TOPDIR)/Make.defs
 
 # Basic BINFMT source files
 
-CSRCS  = binfmt_globals.c binfmt_initialize.c binfmt_register.c binfmt_unregister.c
-CSRCS += binfmt_loadmodule.c binfmt_unloadmodule.c binfmt_execmodule.c
-CSRCS += binfmt_exec.c binfmt_copyargv.c binfmt_dumpmodule.c
+BINFMT_CSRCS  = binfmt_globals.c binfmt_initialize.c binfmt_register.c binfmt_unregister.c
+BINFMT_CSRCS += binfmt_loadmodule.c binfmt_unloadmodule.c binfmt_execmodule.c
+BINFMT_CSRCS += binfmt_exec.c binfmt_copyargv.c binfmt_dumpmodule.c
 
 ifeq ($(CONFIG_BINFMT_LOADABLE),y)
-CSRCS += binfmt_exit.c
+BINFMT_CSRCS += binfmt_exit.c
 endif
 
 ifeq ($(CONFIG_LIBC_EXECFUNCS),y)
-CSRCS += binfmt_execsymtab.c
+BINFMT_CSRCS += binfmt_execsymtab.c
 endif
 
 # Builtin application interfaces
 
 ifeq ($(CONFIG_BUILTIN),y)
-CSRCS += builtin.c
+BINFMT_CSRCS += builtin.c
 endif
 
 # Add configured binary modules
@@ -61,31 +61,31 @@ endif
 include libnxflat/Make.defs
 include libelf/Make.defs
 
-AOBJS = $(BINFMT_ASRCS:.S=$(OBJEXT))
-COBJS = $(CSRCS:.c=$(OBJEXT))
+BINFMT_AOBJS = $(BINFMT_ASRCS:.S=$(OBJEXT))
+BINFMT_COBJS = $(BINFMT_CSRCS:.c=$(OBJEXT))
 
-SRCS = $(BINFMT_ASRCS) $(CSRCS)
-OBJS = $(AOBJS) $(COBJS)
+BINFMT_SRCS = $(BINFMT_ASRCS) $(BINFMT_CSRCS)
+BINFMT_OBJS = $(BINFMT_AOBJS) $(BINFMT_COBJS)
 
 BIN = libbinfmt$(LIBEXT)
 
 all: $(BIN)
 .PHONY: depend clean distclean
 
-$(AOBJS): %$(OBJEXT): %.S
+$(BINFMT_AOBJS): %$(OBJEXT): %.S
 	$(call ASSEMBLE, $<, $@)
 
-$(COBJS): %$(OBJEXT): %.c
+$(BINFMT_COBJS): %$(OBJEXT): %.c
 	$(call COMPILE, $<, $@)
 
-$(BIN): $(OBJS)
+$(BIN): $(BINFMT_OBJS)
 	$(call ARCHIVE, $@, $^)
 
-makedepfile: $(CSRCS:.c=.ddc) $(BINFMT_ASRCS:.S=.dds)
+makedepfile: $(BINFMT_CSRCS:.c=.ddc) $(BINFMT_ASRCS:.S=.dds)
 	$(call CATFILE, Make.dep, $^)
 	$(call DELFILE, $^)
 
-.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
+.depend: Makefile $(BINFMT_SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MAKE) makedepfile
 	$(Q) touch $@
 
diff --git a/binfmt/libelf/Make.defs b/binfmt/libelf/Make.defs
index 16025360dc4..670ad01fa24 100644
--- a/binfmt/libelf/Make.defs
+++ b/binfmt/libelf/Make.defs
@@ -37,16 +37,16 @@ ifeq ($(CONFIG_ELF),y)
 
 # ELF application interfaces
 
-CSRCS += elf.c
+BINFMT_CSRCS += elf.c
 
 # ELF library
 
-CSRCS += libelf_bind.c libelf_init.c libelf_addrenv.c libelf_iobuffer.c
-CSRCS += libelf_load.c libelf_read.c libelf_sections.c libelf_symbols.c
-CSRCS += libelf_uninit.c libelf_unload.c libelf_verify.c
+BINFMT_CSRCS += libelf_bind.c libelf_init.c libelf_addrenv.c libelf_iobuffer.c
+BINFMT_CSRCS += libelf_load.c libelf_read.c libelf_sections.c libelf_symbols.c
+BINFMT_CSRCS += libelf_uninit.c libelf_unload.c libelf_verify.c
 
 ifeq ($(CONFIG_BINFMT_CONSTRUCTORS),y)
-CSRCS += libelf_ctors.c libelf_dtors.c
+BINFMT_CSRCS += libelf_ctors.c libelf_dtors.c
 endif
 
 # Hook the libelf subdirectory into the build
diff --git a/binfmt/libnxflat/Make.defs b/binfmt/libnxflat/Make.defs
index 4c897cd61a5..6a0bf1873f5 100644
--- a/binfmt/libnxflat/Make.defs
+++ b/binfmt/libnxflat/Make.defs
@@ -37,13 +37,13 @@ ifeq ($(CONFIG_NXFLAT),y)
 
 # NXFLAT application interfaces
 
-CSRCS += nxflat.c
+BINFMT_CSRCS += nxflat.c
 
 # NXFLAT library
 
-CSRCS += libnxflat_init.c libnxflat_uninit.c libnxflat_addrenv.c
-CSRCS += libnxflat_load.c libnxflat_unload.c libnxflat_verify.c
-CSRCS += libnxflat_read.c libnxflat_bind.c
+BINFMT_CSRCS += libnxflat_init.c libnxflat_uninit.c libnxflat_addrenv.c
+BINFMT_CSRCS += libnxflat_load.c libnxflat_unload.c libnxflat_verify.c
+BINFMT_CSRCS += libnxflat_read.c libnxflat_bind.c
 
 # Hook the libnxflat subdirectory into the build