From e673dc6dbebedc1374cd4fb9201cf784408c00f3 Mon Sep 17 00:00:00 2001
From: van Hauser <vh@thc.org>
Date: Wed, 15 Jan 2020 10:23:28 +0100
Subject: stronger afl-fuzz performance compilation

---
 Makefile | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 0c0b73c5..57d4c8c7 100644
--- a/Makefile
+++ b/Makefile
@@ -32,9 +32,25 @@ PROGS       = afl-gcc afl-fuzz afl-showmap afl-tmin afl-gotcpu afl-analyze
 SH_PROGS    = afl-plot afl-cmin afl-whatsup afl-system-config
 MANPAGES=$(foreach p, $(PROGS) $(SH_PROGS), $(p).8)
 
-CFLAGS     ?= -O3 -funroll-loops
-CFLAGS     += -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -I include/ \
-	      -DAFL_PATH=\"$(HELPER_PATH)\" -DBIN_PATH=\"$(BIN_PATH)\" \
+ifeq "$(shell echo 'int main() {return 0; }' | $(CC) -x c - -march=native -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
+	CFLAGS_PERFORMANCE += -march=native
+endif
+
+ifeq "$(shell echo 'int main() {return 0; }' | $(CC) -x c - -flto=full -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
+	CFLAGS_PERFORMANCE += -flto=full
+else
+ ifeq "$(shell echo 'int main() {return 0; }' | $(CC) -x c - -flto=thin -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
+	CFLAGS_PERFORMANCE += -flto=thin
+ else
+  ifeq "$(shell echo 'int main() {return 0; }' | $(CC) -x c - -flto -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
+	CFLAGS_PERFORMANCE += -flto
+  endif
+ endif
+endif
+
+CFLAGS     ?= -funroll-loops -Ofast $(CFLAGS_PERFORMANCE)
+CFLAGS     += -Wall -g -Wno-pointer-sign -I include/ \
+              -DAFL_PATH=\"$(HELPER_PATH)\" -DBIN_PATH=\"$(BIN_PATH)\" \
               -DDOC_PATH=\"$(DOC_PATH)\" -Wno-unused-function
 
 AFL_FUZZ_FILES = $(wildcard src/afl-fuzz*.c)
-- 
cgit 1.4.1