diff --git a/Makefile b/Makefile
index 57cdd7e..076180f 100644
--- a/Makefile
+++ b/Makefile
@@ -25,10 +25,19 @@
 ifeq ($(shell uname -s),Darwin)
 CONFIG_DARWIN=y
 endif
+ifeq ($(shell uname -s),NetBSD)
+CONFIG_NETBSD=y
+endif
 # Windows cross compilation from Linux
 #CONFIG_WIN32=y
 # use link time optimization (smaller and faster executables but slower build)
-CONFIG_LTO=y
+#ifndef
+ifndef CONFIG_NETBSD
+  CONFIG_LTO=y
+  CONFIG_LDL=y
+else
+  CONFIG_JEMALLOC=y
+endif
 # consider warnings as errors (for development)
 #CONFIG_WERROR=y
 # force 32 bit build for some utilities
@@ -197,7 +206,12 @@ endif
 HOST_LIBS=-lm -ldl -lpthread
 LIBS=-lm
 ifndef CONFIG_WIN32
-LIBS+=-ldl -lpthread
+LIBS+=-lpthread
+endif
+ifndef CONFIG_NETBSD
+LIBS+=-ldl
+else
+LIBS+=-ljemalloc
 endif
 LIBS+=$(EXTRA_LIBS)
 
@@ -225,6 +239,12 @@ QJSC_DEFINES:=-DCONFIG_CC=\"$(QJSC_CC)\" -DCONFIG_PREFIX=\"$(PREFIX)\"
 ifdef CONFIG_LTO
 QJSC_DEFINES+=-DCONFIG_LTO
 endif
+ifdef CONFIG_LDL
+QJSC_DEFINES+=-DCONFIG_LDL
+endif
+ifdef CONFIG_JEMALLOC
+QJSC_DEFINES+=-DCONFIG_JEMALLOC
+endif
 QJSC_HOST_DEFINES:=-DCONFIG_CC=\"$(HOST_CC)\" -DCONFIG_PREFIX=\"$(PREFIX)\"
 
 $(OBJDIR)/qjsc.o: CFLAGS+=$(QJSC_DEFINES)
diff --git a/cutils.h b/cutils.h
index 8399d61..165a96a 100644
--- a/cutils.h
+++ b/cutils.h
@@ -210,17 +210,22 @@ static inline void put_u8(uint8_t *tab, uint8_t val)
     *tab = val;
 }
 
+#ifndef bswap16
 static inline uint16_t bswap16(uint16_t x)
 {
     return (x >> 8) | (x << 8);
 }
+#endif
 
+#ifndef bswap32
 static inline uint32_t bswap32(uint32_t v)
 {
     return ((v & 0xff000000) >> 24) | ((v & 0x00ff0000) >>  8) |
         ((v & 0x0000ff00) <<  8) | ((v & 0x000000ff) << 24);
 }
+#endif
 
+#ifndef bswap64
 static inline uint64_t bswap64(uint64_t v)
 {
     return ((v & ((uint64_t)0xff << (7 * 8))) >> (7 * 8)) | 
@@ -232,6 +237,7 @@ static inline uint64_t bswap64(uint64_t v)
         ((v & ((uint64_t)0xff << (1 * 8))) << (5 * 8)) | 
         ((v & ((uint64_t)0xff << (0 * 8))) << (7 * 8));
 }
+#endif
 
 /* XXX: should take an extra argument to pass slack information to the caller */
 typedef void *DynBufReallocFunc(void *opaque, void *ptr, size_t size);
diff --git a/qjs.c b/qjs.c
index 22d5f32..1338871 100644
--- a/qjs.c
+++ b/qjs.c
@@ -34,7 +34,7 @@
 #include <time.h>
 #if defined(__APPLE__)
 #include <malloc/malloc.h>
-#elif defined(__linux__)
+#elif defined(__linux__) || defined(__NetBSD__)
 #include <malloc.h>
 #endif
 
diff --git a/qjsc.c b/qjsc.c
index f8e60b3..1599495 100644
--- a/qjsc.c
+++ b/qjsc.c
@@ -449,8 +449,13 @@ static int output_executable(const char *out_filename, const char *cfilename,
              lib_dir, bn_suffix, lto_suffix);
     *arg++ = libjsname;
     *arg++ = "-lm";
+#ifdef CONFIG_LDL
     *arg++ = "-ldl";
+#endif
     *arg++ = "-lpthread";
+#ifdef CONFIG_JEMALLOC
+    *arg++ = "-ljemalloc";
+#endif
     *arg = NULL;
     
     if (verbose) {
diff --git a/quickjs-libc.c b/quickjs-libc.c
index 67fe2f6..18f9585 100644
--- a/quickjs-libc.c
+++ b/quickjs-libc.c
@@ -57,6 +57,10 @@ typedef sig_t sighandler_t;
 
 #endif
 
+#if defined(__NetBSD__)
+extern char **environ;
+#endif
+
 #if !defined(_WIN32)
 /* enable the os.Worker API. IT relies on POSIX threads */
 #define USE_WORKER
@@ -1919,7 +1923,7 @@ static void os_signal_handler(int sig_num)
     os_pending_signals |= ((uint64_t)1 << sig_num);
 }
 
-#if defined(_WIN32)
+#if defined(_WIN32) || defined(__NetBSD__)
 typedef void (*sighandler_t)(int sig_num);
 #endif
 
diff --git a/quickjs.c b/quickjs.c
index 4e58a98..0b51c68 100644
--- a/quickjs.c
+++ b/quickjs.c
@@ -38,6 +38,8 @@
 #include <malloc.h>
 #elif defined(__FreeBSD__)
 #include <malloc_np.h>
+#elif defined(__NetBSD__)
+#include <malloc.h>
 #endif
 
 #include "cutils.h"