build: Fix linkage for Darwin

Author: daniel

examples/test_abort_buffer/Makefile

@@ -3,6 +3,8 @@
 #=======================================================================
 include ../make.inc
 
+UNAME = $(shell uname)
+
 PY_MOD      = pywrapper
 WRAPFLAGS   = -v
 F2PY        = f2py-f90wrap
@@ -13,10 +15,9 @@ F90WRAP_OBJ = $(F90WRAP_SRC:.f90=.o)
 SRC_LIB 		= src
 F90WRAP_LIB  = f90wrap
 ifeq ($(UNAME),Darwin)
-	LDFLAGS     := -bundle -undefined dynamic_lookup -lgfortran
-else
-	LDFLAGS     := -shared -lgfortran
+	LDFLAGS  	 = -Wl,-undefined,dynamic_lookup
 endif
+
 .PHONY: all clean
 
 all: test
@@ -51,8 +52,8 @@ f90wrap_%.o: f90wrap_%.f90
 lib${SRC_LIB}.so: ${OBJ}
 	${F90} ${F90FLAGS} -shared -o lib${SRC_LIB}.so ${OBJ} ${LDFLAGS}
 
-lib${F90WRAP_LIB}.so: ${F90WRAP_OBJ}
-	${F90} ${F90FLAGS} -shared -o lib${F90WRAP_LIB}.so ${F90WRAP_OBJ} ${LDFLAGS}
+lib${F90WRAP_LIB}.so: ${F90WRAP_OBJ} lib${SRC_LIB}.so
+	${F90} ${F90FLAGS} -shared -o lib${F90WRAP_LIB}.so ${F90WRAP_OBJ} -L. -l${SRC_LIB} ${LDFLAGS}
 
 test: f2py_main_A f2py_main_B
 	LD_LIBRARY_PATH=. ${PYTHON} tests.py