build, add ASAN, some CFLAGS changes, add revision

Makefile

@@ -1,5 +1,6 @@
 $(LD) ?= $(CC)
 TARGET ?= PicoDrive
+ASAN ?= 0
 DEBUG ?= 0
 CFLAGS += -I$(PWD)
 CYCLONE_CC ?= gcc
@@ -41,22 +42,41 @@ ifneq ($(findstring gcc,$(shell $(CC) -v 2>&1)),)
 endif
 endif
 
+ifeq "$(ASAN)" "1"
+	CFLAGS += -fsanitize=address -fsanitize=leak -fsanitize=bounds -fno-omit-frame-pointer -fno-common -O1 -g
+	LDLIBS += -fsanitize=address -fsanitize=leak -fsanitize=bounds -static-libasan
+else
 ifeq "$(DEBUG)" "0"
 	CFLAGS += -O3 -DNDEBUG
+endif
 endif
 	LD = $(CC)
 	OBJOUT ?= -o
 	LINKOUT ?= -o
 endif
 
+
+chkCCflag = $(shell n=/dev/null; echo $(1) | tr " " "\n" | while read f; do \
+	    $(CC) $$f -x c -c $$n -o $$n 2>$$n && echo "_$$f" | tr -d _; done)
+
 ifeq ("$(PLATFORM)",$(filter "$(PLATFORM)","gp2x" "opendingux" "miyoo" "rpi1"))
 # very small caches, avoid optimization options making the binary much bigger
-CFLAGS += -finline-limit=42 -fno-unroll-loops -fno-ipa-cp -ffast-math
+CFLAGS += -fno-common -fno-stack-protector -finline-limit=42 -fno-unroll-loops -ffast-math
-# this gets you about 20% better execution speed on 32bit arm/mips
+ifneq ($(call chkCCflag, -fipa-ra),) # gcc >= 5
-CFLAGS += -fno-common -fno-stack-protector -fno-guess-branch-probability -fno-caller-saves -fno-regmove
+CFLAGS += $(call chkCCflag, -flto -fipa-pta -fipa-ra)
-# Ouf, very old gcc toolchains (pre 4.6) don't have this option:
+else
-CFLAGS += $(shell echo | $(CC) -ftree-loop-if-convert -x c -c -o /dev/null - 2>/dev/null && echo xfno-tree-loop-if-convert | tr x -)
+# these improve execution speed on 32bit arm/mips with gcc pre-5 toolchains
+CFLAGS += -fno-ipa-cp -fno-caller-saves -fno-guess-branch-probability -fno-regmove
+# very old gcc toolchains may not have these options
+CFLAGS += $(call chkCCflag, -fno-tree-loop-if-convert -fipa-pta)
 endif
+endif
+
+# revision info from repository if this not a tagged release
+ifeq "$(shell git describe --tags --exact-match HEAD 2>/dev/null)" ""
+REVISION ?= -$(shell git rev-parse --short HEAD || echo ???)
+endif
+CFLAGS += -DREVISION=\"$(REVISION)\"
 
 # default settings
 use_libchdr ?= 1

Makefile.libretro

@@ -40,10 +40,8 @@ STATIC_LINKING_LINK:= 0
 LOW_MEMORY := 0
 TARGET_NAME := picodrive
 LIBM := -lm
-GIT_VERSION ?= $(shell git rev-parse --short HEAD || echo unknown)
+REVISION ?= -$(shell git rev-parse --short HEAD || echo ???)
-ifneq ($(GIT_VERSION),"unknown")
+
-	CFLAGS += -DGIT_VERSION=\"$(GIT_VERSION)\"
-endif
 
 fpic :=
 
@@ -68,7 +66,6 @@ else ifneq (,$(findstring x86,$(platform)))
 	ARCH := 86
         fpic := -fPIC
 	SHARED := -shared
-	DONT_COMPILE_IN_ZLIB = 1
 	CFLAGS += -DFAMEC_NO_GOTOS
 
 # AARCH64 generic
@@ -77,7 +74,6 @@ else ifeq ($(platform), aarch64)
 	ARCH = aarch64
         fpic := -fPIC
 	SHARED := -shared
-	DONT_COMPILE_IN_ZLIB = 1
 	CFLAGS += -DFAMEC_NO_GOTOS
 
 # Portable Linux
@@ -492,7 +488,6 @@ else ifeq ($(platform), miyoo)
 	SHARED := -shared -nostdlib
 	fpic := -fPIC
 	LIBM :=
-	DONT_COMPILE_IN_ZLIB = 1
 	CFLAGS += -fomit-frame-pointer -ffast-math -march=armv5te -mtune=arm926ej-s -D__GCW0__
 	HAVE_ARMv6 = 0
 	LOW_MEMORY = 1
@@ -604,7 +599,7 @@ else
 
 endif
 
-CFLAGS += -DNO_ZLIB -D__LIBRETRO__
+CFLAGS += -D__LIBRETRO__
 
 ifeq ($(USE_LIBRETRO_VFS),1)
 	CFLAGS += -DUSE_LIBRETRO_VFS
@@ -707,6 +702,8 @@ else
 	LD = $(CC)
 endif
 
+PLATFORM_ZLIB ?= 1
+
 include Makefile
 
 ifeq ($(platform), osx)

platform/common/menu_pico.c

@@ -35,7 +35,9 @@
 #endif
 
 // FIXME
+#ifndef REVISION
 #define REVISION "0"
+#endif
 
 static const char *rom_exts[] = {
 	"zip", "bin",

platform/common/version.h

@@ -1 +1 @@
-#define VERSION "1.99"
+#define VERSION "1.99" REVISION

platform/libretro/libretro.c

@@ -670,12 +670,7 @@ void retro_get_system_info(struct retro_system_info *info)
 {
    memset(info, 0, sizeof(*info));
    info->library_name = "PicoDrive";
-#ifndef GIT_VERSION
+   info->library_version = VERSION;
-#define _GIT_VERSION ""
-#else
-#define _GIT_VERSION "-" GIT_VERSION
-#endif
-   info->library_version = VERSION _GIT_VERSION;
    info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|chd|sms|gg|sg|sc|m3u|68k|sgd|pco";
    info->need_fullpath = true;
 }