diff --git a/Makefile b/Makefile
index 61330ce..92377db 100644
--- a/Makefile
+++ b/Makefile
@@ -11,11 +11,12 @@ TEST_SRC+=bls12_test.cpp
 TEST_SRC+=mapto_wb19_test.cpp
 TEST_SRC+=ecdsa_c_test.cpp
 TEST_SRC+=modp_test.cpp
+LIB_OBJ=$(OBJ_DIR)/fp.o
 ifeq ($(MCL_STATIC_CODE),1)
   MCL_USE_XBYAK=0
   MCL_MAX_BIT_SIZE=384
   CFLAGS+=-DMCL_STATIC_CODE
-  LIB_OBJ=obj/static_code.o
+  LIB_OBJ+=obj/static_code.o
   TEST_SRC=bls12_test.cpp
 endif
 ifeq ($(CPU),x86-64)
@@ -93,7 +94,6 @@ ifneq ($(CPU),)
   ASM_SRC=$(ASM_SRC_PATH_NAME).s
 endif
 ASM_OBJ=$(OBJ_DIR)/$(CPU).o
-LIB_OBJ+=$(OBJ_DIR)/fp.o
 BN256_OBJ=$(OBJ_DIR)/bn_c256.o
 BN384_OBJ=$(OBJ_DIR)/bn_c384.o
 BN384_256_OBJ=$(OBJ_DIR)/bn_c384_256.o
@@ -253,7 +253,7 @@ src/static_code.asm: src/dump_code
 	$< > $@
 
 obj/static_code.o: src/static_code.asm
-	nasm -felf64 -o $@ $<
+	nasm $(NASM_ELF_OPT) -o $@ $<
 
 bin/static_code_test.exe: test/static_code_test.cpp src/fp.cpp obj/static_code.o
 	$(CXX) -o $@ -O3 $^ -g -DMCL_DONT_USE_XBYAK -DMCL_STATIC_CODE -DMCL_MAX_BIT_SIZE=384 -DMCL_DONT_USE_OPENSSL -DMCL_USE_VINT -DMCL_SIZEOF_UNIT=8 -DMCL_VINT_FIXED_BUFFER -I include -Wall -Wextra
diff --git a/common.mk b/common.mk
index 6f4ed72..2870ac9 100644
--- a/common.mk
+++ b/common.mk
@@ -1,11 +1,13 @@
 GCC_VER=$(shell $(PRE)$(CC) -dumpversion)
 UNAME_S=$(shell uname -s)
+NASM_ELF_OPT=-felf64
 ifeq ($(UNAME_S),Linux)
   OS=Linux
 endif
 ifeq ($(findstring MINGW64,$(UNAME_S)),MINGW64)
   OS=mingw64
   CFLAGS+=-D__USE_MINGW_ANSI_STDIO=1
+  NASM_ELF_OPT=-fwin64
 endif
 ifeq ($(findstring CYGWIN,$(UNAME_S)),CYGWIN)
   OS=cygwin
@@ -20,6 +22,7 @@ ifeq ($(UNAME_S),Darwin)
   GMP_DIR?=/usr/local/opt/gmp
   CFLAGS+=-I$(GMP_DIR)/include
   LDFLAGS+=-L$(GMP_DIR)/lib
+  NASM_ELF_OPT=-fmacho64
 else
   LIB_SUF=so
 endif
diff --git a/src/fp_generator.hpp b/src/fp_generator.hpp
index 3213029..34a6ded 100644
--- a/src/fp_generator.hpp
+++ b/src/fp_generator.hpp
@@ -65,7 +65,12 @@ void setFuncInfo(DumpCode& prof, const char *suf, const char *name, const T& beg
 {
 	if (suf == 0) suf = "";
 	const uint8_t*p = (const uint8_t*)begin;
-	prof.set(std::string("mclx_") + suf + name, p, end - p);
+#ifdef __APPLE__
+	std::string pre = "_mclx_";
+#else
+	std::string pre = "mclx_";
+#endif
+	prof.set(pre + suf + name, p, end - p);
 }
 #else
 template<class T>