[PATCH 2/2] Generate more detailed version information.

[Stefan Tauner]

Old output:
flashrom v0.9.7-r1716 on Linux 3.8.0-6-generic (x86_64)

New output with svn with local changes:
flashrom v0.9.7-r1716-dirty on Linux 3.8.0-6-generic (x86_64)
modified 2013-08-21T14:56:25+0200, available from svn://flashrom.org/flashrom/trunk

New output with git with local changes when URL is unavailable:
flashrom v0.9.7-r1716-50e143e-2-dirty on Linux 3.8.0-6-generic (x86_64)
modified 2013-08-21T14:34:40+0200

New output with git with local changes when URL is available:
flashrom v0.9.7-r1716-f6845c7-2 on Linux 3.8.0-6-generic (x86_64)
modified 2013-08-21T14:34:56+0200, available from [e-mail]:stefanct/flashrom.git git

Signed-Off-By: David Hendricks 
Signed-off-by: Stefan Tauner 
---
 Makefile   | 21 ++++++++++++++-------
 flashrom.c |  7 +++++++
 2 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index 540e5da..9ce60d2 100644
--- a/Makefile
+++ b/Makefile
@@ -325,13 +325,17 @@ CLI_OBJS = cli_classic.o cli_output.o print.o
 # Set the flashrom version string from the highest revision number of the checked out flashrom files.
 # Note to packagers: Any tree exported with "make export" or "make tarball"
 # will not require subversion. The downloadable snapshots are already exported.
-SVNVERSION := $(shell ./util/getrevision.sh -u)
+UPSTREAMREV := $(shell ./util/getrevision.sh --upstream)
+LOCALREV := $(shell ./util/getrevision.sh --local)
+TIMESTAMP := $(shell ./util/getrevision.sh --timestamp)
+SCMURL := $(shell ./util/getrevision.sh --url)

RELEASE := 0.9.7
-VERSION := $(RELEASE)-$(SVNVERSION)
+VERSION := $(RELEASE)-$(UPSTREAMREV)
 RELEASENAME ?= $(VERSION)

-SVNDEF := -D'FLASHROM_VERSION="$(VERSION)"'
+SCMDEF := -D'FLASHROM_VERSION="$(VERSION)"' -D'FLASHROM_SCMURL="$(SCMURL)"' \
+          -D'FLASHROM_LOCALREV="$(LOCALREV)"' -D'FLASHROM_TIMESTAMP="$(TIMESTAMP)"'

# Always enable internal/onboard support for now.
 CONFIG_INTERNAL ?= yes
@@ -652,7 +656,7 @@ libflashrom.a: $(LIBFLASHROM_OBJS)
 TAROPTIONS = $(shell LC_ALL=C tar --version|grep -q GNU && echo "--owner=root --group=root")

%.o: %.c .features
-	$(CC) -MMD $(CFLAGS) $(CPPFLAGS) $(FLASHROM_CFLAGS) $(FEATURE_CFLAGS) $(SVNDEF) -o $@ -c $<
+	$(CC) -MMD $(CFLAGS) $(CPPFLAGS) $(FLASHROM_CFLAGS) $(FEATURE_CFLAGS) $(SCMDEF) -o $@ -c $<

# Make sure to add all names of generated binaries here.
 # This includes all frontends and libflashrom.
@@ -860,9 +864,12 @@ install: $(PROGRAM)$(EXEC_SUFFIX)

export:
    @rm -rf $(EXPORTDIR)/flashrom-$(RELEASENAME)
-	@svn export -r BASE . $(EXPORTDIR)/flashrom-$(RELEASENAME)
-	@sed "s/^SVNVERSION.*/SVNVERSION := $(SVNVERSION)/" Makefile >$(EXPORTDIR)/flashrom-$(RELEASENAME)/Makefile
-	@LC_ALL=C svn log >$(EXPORTDIR)/flashrom-$(RELEASENAME)/ChangeLog
+	@svn export -r BASE . $(EXPORTDIR)/flashrom-$(RELEASENAME) 2>/dev/null || git checkout-index -a -f --prefix=$(EXPORTDIR)/flashrom-$(RELEASENAME)/
+	@# If SCMVERSION or SCMEXTVERSION contain a slash or SCMURL contains a hash, this will explode
+	@sed "s/^SCMVERSION.*/SCMVERSION := $(SCMVERSION)/;s/^SCMEXTVERSION.*/SCMEXTVERSION := $(SCMEXTVERSION)/;s#^SCMURL.*#SCMURL := $(SCMURL)#" Makefile >$(EXPORTDIR)/flashrom-$(RELEASENAME)/Makefile
+	@# ChangeLog should be in English, but we want UTF-8 for names.
+	@( LC_ALL=en_US.UTF-8 svn log 2>/dev/null || LC_ALL=en_US.UTF-8 git log 2>/dev/null || echo "Unable to extract log from SCM" ) >$(EXPORTDIR)/flashrom-$(RELEASENAME)/ChangeLog
+	@rm -f $(EXPORTDIR)/flashrom-$(RELEASENAME)/.gitignore $(EXPORTDIR)/flashrom-$(RELEASENAME)/.gitattributes $(EXPORTDIR)/flashrom-$(RELEASENAME)/.gitmodules
    @echo Exported $(EXPORTDIR)/flashrom-$(RELEASENAME)/

tarball: export
diff --git a/flashrom.c b/flashrom.c
index 86e64a2..6944140 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -1666,7 +1666,14 @@ void print_buildinfo(void)
 void print_version(void)
 {
    msg_ginfo("flashrom v%s", flashrom_version);
+	if (strlen(FLASHROM_LOCALREV) > 0)
+		msg_ginfo("-%s", FLASHROM_LOCALREV);
+
    print_sysinfo();
+	msg_ginfo("\nmodified %s", FLASHROM_TIMESTAMP);
+	if (strlen(FLASHROM_SCMURL) > 0)
+		msg_ginfo(", available from %s", FLASHROM_SCMURL);
+
    msg_ginfo("\n");
 }