-# -*- makefile -*-
-CFLAGS = -ggdb -Wall -O3 -traditional-cpp
-OS_SRC = bsd-os.c os-common.c ppc-darwin-os.c
-OS_LIBS = -lSystem -lc -lm /sw/lib/libdl.a
+# -*- makefile -*- for the C-level run-time support for SBCL
+
+# This software is part of the SBCL system. See the README file for
+# more information.
+#
+# This software is derived from the CMU CL system, which was
+# written at Carnegie Mellon University and released into the
+# public domain. The software is in the public domain and is
+# provided with absolutely no warranty. See the COPYING and CREDITS
+# files for more information.
+
+CFLAGS = -g -Wall -O2 -fdollars-in-identifiers -mmacosx-version-min=10.4
+LINKFLAGS += -mmacosx-version-min=10.4
+
+OS_SRC = bsd-os.c darwin-os.c ppc-darwin-os.c
+
+OS_LIBS = -lSystem -lc
+
+CC = gcc