From 4cb99787a76744c83f04bef7e0ce65ef35d49740 Mon Sep 17 00:00:00 2001
From: noneofyourbusiness <stpavlenko@kolabnow.ch>
Date: Thu, 1 Dec 2022 06:33:51 +0100
Subject: [PATCH] make tcc -v more informative (also add commit date/time)
 patch from 'Christian Jullien' <eligis@orange.fr>

---
 Makefile | 9 +++++++--
 tcc.c    | 3 +++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index efe08853..533d75ed 100644
--- a/Makefile
+++ b/Makefile
@@ -243,7 +243,12 @@ endif
 
 GITHASH := $(shell git rev-parse >/dev/null 2>&1 && git rev-parse --short HEAD || echo no)
 ifneq ($(GITHASH),no)
-DEF_GITHASH := -DTCC_GITHASH="\"$(shell git rev-parse --abbrev-ref HEAD):$(GITHASH)$(shell git diff --quiet || echo '-mod')\""
+DEF_GITHASH := -DTCC_GITHASH="\"$(shell git rev-parse --abbrev-ref HEAD):$(GITHASH)$(shell git diff --quiet || echo ' - modified')\""
+endif
+
+GITDATE := $(shell git log -1 >/dev/null 2>&1 && git log -1 --pretty='format:%cI' || echo no)
+ifneq ($(GITDATE),no)
+DEF_GITDATE := -DTCC_GITDATE="\"$(shell git log -1 --pretty='format:%cI')\""
 endif
 
 ifeq ($(CONFIG_debug),yes)
@@ -265,7 +270,7 @@ $(X)%.o : %.c $(LIBTCC_INC)
 
 # additional dependencies
 $(X)tcc.o : tcctools.c
-$(X)tcc.o : DEFINES += $(DEF_GITHASH)
+$(X)tcc.o : DEFINES += $(DEF_GITHASH) $(DEF_GITDATE)
 
 # Host Tiny C Compiler
 tcc$(EXESUF): tcc.o $(LIBTCC)
diff --git a/tcc.c b/tcc.c
index beef6fbf..da460cf3 100644
--- a/tcc.c
+++ b/tcc.c
@@ -155,6 +155,9 @@ static const char version[] =
     "tcc version "TCC_VERSION
 #ifdef TCC_GITHASH
     " "TCC_GITHASH
+#endif
+#ifdef TCC_GITDATE
+    " on "TCC_GITDATE
 #endif
     " ("
 #ifdef TCC_TARGET_I386