From patchwork Fri Sep 24 22:31:05 2010
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Subject: Use __DATE__ and __TIME__ instead of date(1)
Date: Fri, 24 Sep 2010 22:31:05 -0000
From: Patrick Georgi <patrick@georgi-clan.de>
X-Patchwork-Id: 1973
Message-Id: <4C9D26A9.1000709@georgi-clan.de>
To: coreboot@coreboot.org

Hi,

attached patch uses the __DATE__ and __TIME__ macros instead of date(1)
calls. User visible results are:
- different date format (no timezone included)
- different time stamps in a single build
- less calls to tools from make (and it also slightly helps ccache do
its magic)

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>


Index: Makefile
===================================================================
--- Makefile	(Revision 5836)
+++ Makefile	(Arbeitskopie)
@@ -319,12 +319,12 @@
 	printf "#define __BUILD_H\n\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_VERSION \"$(KERNELVERSION)-r$(shell if [ -d $(top)/.svn -a -f "`which svnversion`" ]; then svnversion $(top); else if [ -d $(top)/.git -a -f "`which git`" ]; then git --git-dir=/$(top)/.git log|grep git-svn-id|cut -f 2 -d@|cut -f 1 -d' '|sort -g|tail -1; fi; fi)\"\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_EXTRA_VERSION \"$(COREBOOT_EXTRA_VERSION)\"\n" >> $(obj)/build.ht
-	printf "#define COREBOOT_BUILD \"`LANG= date`\"\n" >> $(obj)/build.ht
+	printf "#define COREBOOT_BUILD __DATE__ \" \" __TIME__\n" >> $(obj)/build.ht
 	printf "\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_COMPILER \"$(shell LANG= $(CC) --version | head -n1)\"\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_ASSEMBLER \"$(shell LANG= $(AS) --version | head -n1)\"\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_LINKER \"$(shell LANG= $(LD) --version | head -n1)\"\n" >> $(obj)/build.ht
-	printf "#define COREBOOT_COMPILE_TIME \"`LANG= date +%T`\"\n" >> $(obj)/build.ht
+	printf "#define COREBOOT_COMPILE_TIME __TIME__\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_COMPILE_BY \"$(subst \,@,$(shell PATH=$$PATH:/usr/ucb whoami))\"\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_COMPILE_HOST \"$(shell hostname -s 2>/dev/null)\"\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_COMPILE_DOMAIN \"$(shell test `uname -s` = "Linux" && dnsdomainname || domainname 2>/dev/null)\"\n" >> $(obj)/build.ht