diff --git a/README.SRC b/README.SRC
index 72346021..ec19afce 100644
--- a/README.SRC
+++ b/README.SRC
@@ -87,7 +87,6 @@ Developer quick start
           #   # apt-get update
           #   # apt-get install zlib1g-dev:i386 libc6-dev:i386
           #   # apt-get install crossbuild-essential-riscv64  # for example
-
           # aarch64-linux-gnu/4.9.2/cc1 needs libmpfr.so.4.  Make a symlink:
           #   # ln -s /usr/lib/x86_64-linux-gnu/libmpfr.so.6 /usr/lib/x86_64-linux-gnu/libmpfr.so.4
 
diff --git a/src/stub/Makefile b/src/stub/Makefile
index 6348c241..a50a6e4a 100644
--- a/src/stub/Makefile
+++ b/src/stub/Makefile
@@ -2234,24 +2234,30 @@ riscv64-linux.elf-fold.h : $(srcdir)/src/$$T.lds \
 	$(call tc,bin2h) tmp/$T.bin $@
 
 tmp/riscv64-linux.elf-fold.o : $(srcdir)/src/$$T.S
-	$(call tc,gcc) -c $< -o $@
+	$(call tc,gcc) -c -O $< -o $@
 	$(call tc,f-objstrip,$@)
 
 tmp/riscv64-linux.elf-main2.o : $(srcdir)/src/$$T.c $(srcdir)/src/i386-linux.elf-main2.c
-	$(call tc,gcc) -c $< -o $@
+	(echo '#define call jal'; $(call tc,gcc) -S $< -o -) \
+	    | sed 's/@plt//' \
+	    | $(call tc,gcc) -c -x assembler-with-cpp - -o $@
+	$(call tc,gpp_mkdep) --mode=c --MMD=$@ --MF=tmp/$T.d $<
 	$(call tc,f-objstrip,$@)
 
 tmp/riscv64-linux.elf-help_umf.o: $(srcdir)/src/$$T.S
 	$(call tc,gcc) -c $< -o $@
 
 tmp/riscv64-linux.elf-upxfd_linux.o : $(srcdir)/src/upxfd_linux.c
-	$(call tc,gcc) -c $< -o $@
+	(echo '#define call jal'; $(call tc,gcc) -S -O $< -o -) \
+	    | sed 's/@plt//' \
+	    | $(call tc,gcc) -c -x assembler-with-cpp - -o $@
 	$(call tc,objcopy) --strip-unneeded --rename-section .text=UMF_LINUX \
 	    -R .riscv.attributes -R .data -R .bss -R .note.GNU-stack $@
 	$(call tc,objdump) -Dr $(tc_objdump_disasm_options) $@ | $(RTRIM) > $@.disasm
 
 tmp/riscv64-expand.o: $(srcdir)/src/$$T.S
 	$(call tc,gcc) -c $< -o $@
+	$(call tc,objcopy) -R .riscv.attributes $@
 # =====
 
 # /***********************************************************************
diff --git a/src/stub/src/arch/i086/cleanasm.py b/src/stub/src/arch/i086/cleanasm.py
index 73b42cb3..bfb11261 100644
--- a/src/stub/src/arch/i086/cleanasm.py
+++ b/src/stub/src/arch/i086/cleanasm.py
@@ -99,11 +99,11 @@ def main(argv):
             k, v = m.group(1).strip(), [0, 0, None, 0]
         assert k and v, (inst, args)
         v[2] = k                # new name
-        if k in labels:
+        if labels.has_key(k):
             assert labels[k][:2] == v[:2]
         return k, v
     def add_label(k, v):
-        if k in labels:
+        if labels.has_key(k):
             assert labels[k][:2] == v[:2]
         else:
             labels[k] = v
@@ -449,7 +449,7 @@ def main(argv):
     ofp = open(ofile, "wb")
     current_label = None
     for label, inst, args, args_label in olines:
-        if label in labels:
+        if labels.has_key(label):
             current_label = labels[label][2]
             if opts.verbose:
                 ofp.write("%s: /* %d */\n" % (labels[label][2], labels[label][3]))
diff --git a/src/stub/src/upxfd_linux.c b/src/stub/src/upxfd_linux.c
index e31bd235..b87255a4 100644
--- a/src/stub/src/upxfd_linux.c
+++ b/src/stub/src/upxfd_linux.c
@@ -78,7 +78,7 @@ extern void my_bkpt(void const *, ...);
 #define ANDROID_FRIEND 0
 #define addr_string(string) ({ \
     char const *str; \
-    asm("jal 0f; .string \"" string "\"; .balign 4; 0: mv %0,ra" \
+    asm("jal %0,0f; .string \"" string "\"; .balign 4; 0:" \
 /*out*/ : "=r"(str) \
 /* in*/ : \
 /*und*/ : ); \