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authorAlbert Ou <albert@sifive.com>2016-12-13 15:05:19 -0800
committerAlbert Ou <albert@sifive.com>2016-12-14 12:23:40 -0800
commit3dbaad0a1f27b96462541e1189efe37ffa913e9a (patch)
treef50f770a39bc5d9fd9296862b4806c5dd7d0eed6 /software/dhrystone/Makefile
parent82d5cab92318ca82f6fb95921cd70e4aefa28cd9 (diff)
Refactor libc stubs into libwrap
The --wrap feature of GNU ld supports a cleaner framework for linking in alternative implementations of libc functions without cpp hacks. Place wrappers in separate object files to reduce static code size.
Diffstat (limited to 'software/dhrystone/Makefile')
-rw-r--r--software/dhrystone/Makefile5
1 files changed, 3 insertions, 2 deletions
diff --git a/software/dhrystone/Makefile b/software/dhrystone/Makefile
index 2058ca1..a55b1ec 100644
--- a/software/dhrystone/Makefile
+++ b/software/dhrystone/Makefile
@@ -5,10 +5,11 @@ C_SRCS := dhry_stubs.c dhry_printf.c
HEADERS := dhry.h
DHRY_SRCS := dhry_1.c dhry_2.c
-DHRY_CFLAGS := -O2 -DTIME -fno-inline -Wno-implicit
+DHRY_CFLAGS := -O2 -DTIME -fno-inline -fno-builtin-printf -Wno-implicit
XLEN ?= 32
-CFLAGS := -Dscanf=dhry_scanf -Dprintf=dhry_printf -Os -fno-common
+CFLAGS := -Os -fno-common
+LDFLAGS := -Wl,--wrap=scanf -Wl,--wrap=printf
DHRY_OBJS := $(patsubst %.c,%.o,$(DHRY_SRCS))
LINK_OBJS := $(DHRY_OBJS)