diff --git a/Makefile b/Makefile
index 081478b..4bc2eb2 100644
--- a/Makefile
+++ b/Makefile
@@ -39,8 +39,27 @@ LIBUCONTEXT_HEADERS = \
 	include/libucontext/bits.h
 LIBUCONTEXT_EXAMPLES = \
 	examples/cooperative_threading
+LIBUCONTEXT_POSIX_NAME = libucontext_posix.so
+LIBUCONTEXT_POSIX_STATIC_NAME = libucontext_posix.a
+LIBUCONTEXT_POSIX_C_SRC = libucontext_posix.c
+LIBUCONTEXT_POSIX_OBJ = ${LIBUCONTEXT_POSIX_C_SRC:.c=.o}
+LIBUCONTEXT_POSIX_SONAME = libucontext_posix.so.${LIBUCONTEXT_SOVERSION}
+LIBUCONTEXT_POSIX_PATH = ${LIBDIR}/${LIBUCONTEXT_POSIX_SONAME}
+LIBUCONTEXT_POSIX_STATIC_PATH = ${LIBDIR}/${LIBUCONTEXT_POSIX_STATIC_NAME}
 
-all: ${LIBUCONTEXT_SONAME} ${LIBUCONTEXT_STATIC_NAME} ${LIBUCONTEXT_PC}
+ifeq ($(FREESTANDING),yes)
+	LIBUCONTEXT_POSIX_NAME =
+	LIBUCONTEXT_POSIX_STATIC_NAME =
+endif
+
+all: ${LIBUCONTEXT_SONAME} ${LIBUCONTEXT_STATIC_NAME} ${LIBUCONTEXT_POSIX_NAME} ${LIBUCONTEXT_POSIX_STATIC_NAME} ${LIBUCONTEXT_PC}
+
+${LIBUCONTEXT_POSIX_NAME}: ${LIBUCONTEXT_NAME} ${LIBUCONTEXT_POSIX_OBJ}
+	$(CC) -fPIC -o ${LIBUCONTEXT_POSIX_NAME} -Wl,-soname,${LIBUCONTEXT_POSIX_SONAME} \
+		-shared ${LIBUCONTEXT_POSIX_OBJ} ${LDFLAGS}
+
+${LIBUCONTEXT_POSIX_STATIC_NAME}: ${LIBUCONTEXT_POSIX_OBJ}
+	$(AR) rcs ${LIBUCONTEXT_POSIX_STATIC_NAME} ${LIBUCONTEXT_POSIX_OBJ}
 
 ${LIBUCONTEXT_STATIC_NAME}: ${LIBUCONTEXT_OBJ}
 	$(AR) rcs ${LIBUCONTEXT_STATIC_NAME} ${LIBUCONTEXT_OBJ}
@@ -81,7 +100,7 @@ docs: ${MANPAGES}
 
 clean:
 	rm -f ${LIBUCONTEXT_NAME} ${LIBUCONTEXT_SONAME} ${LIBUCONTEXT_STATIC_NAME} \
-		${LIBUCONTEXT_OBJ} ${LIBUCONTEXT_PC} \
+		${LIBUCONTEXT_OBJ} ${LIBUCONTEXT_PC} ${LIBUCONTEXT_POSIX_NAME} ${LIBUCONTEXT_POSIX_STATIC_NAME} \
 		include/libucontext/bits.h test_libucontext ${MANPAGES}
 
 install: all
@@ -93,6 +112,10 @@ install: all
 		install -D -m644 $$i ${DESTDIR}${INCLUDEDIR}/$$destfn; \
 	done
 	install -D -m644 ${LIBUCONTEXT_PC} ${DESTDIR}${PKGCONFIGDIR}/${LIBUCONTEXT_PC}
+	if [ -n ${LIBUCONTEXT_POSIX_NAME} ]; then \
+		install -D -m755 ${LIBUCONTEXT_POSIX_NAME} ${DESTDIR}${LIBUCONTEXT_POSIX_PATH}; \
+		install -D -m644 ${LIBUCONTEXT_STATIC_POSIX_NAME} ${DESTDIR}${LIBUCONTEXT_STATIC_POSIX_PATH}; \
+	fi
 
 install_docs: docs
 	install -D -m644 doc/libucontext.3 ${DESTDIR}/usr/share/man/man3/libucontext.3