# HG changeset patch
# User Frits van Bommel <fvbommel wxs.nl>
# Date 1236957481 -3600
# Node ID 829ac3f301034f56da83a290b1fd4b18627feb5f
# Parent  0f8aeb31678c863f0b910d025be0336f0a1f6f93
Updating revisions.pl.in:
 - Change the way the LLVM SVN revision is detected, using `svn info` instead
   of `svnversion`. This speeds it up significantly on my machine (especially
   when the LLVM SVN checkout isn't in disk cache).
 - Add "last changed date" to SVN checkouts too, not just unpacked tarballs
 - No longer rely on SVN revision to detect release vs trunk checkouts, treat
   release checkout the same as unpacked release tarball. (Except for date
   determination, which uses SVN date instead of filesystem date)

diff -r 0f8aeb31678c -r 829ac3f30103 revisions.pl.in
--- a/revisions.pl.in	Fri Mar 13 07:17:29 2009 -0600
+++ b/revisions.pl.in	Fri Mar 13 16:18:01 2009 +0100
@@ -7,31 +7,47 @@
 
 my $llvm_src = `perl @LLVM_CONFIG@ --src-root`;
 
-my $llvm_rev = `svnversion --committed $llvm_src`;
+my $svn_info = `svn info $llvm_src 2>/dev/null`;
+
+my $extra_includes = "";
 my $llvm_rev_str;
 my $llvm_rev_nr;
+my $llvm_date = "";
 
-if ($llvm_rev =~ /^\s*(\d+:)?((\d+)[MSP]*)\s*$/) {
-	$llvm_rev_str = qq!#define LLVM_REV_STR "LLVM rev. $2"!;
-	$llvm_rev_nr = "$3";
+if ($svn_info =~ /^URL:.*\/trunk\s*$/m && $svn_info =~ /^Last Changed Rev:\s*(\d+)\s*/m) {
+    $llvm_rev_str = qq!"LLVM trunk rev. $1"!;
+    $llvm_rev_nr = $1;
 } else {
-	my $llvm_lib = `perl @LLVM_CONFIG@ --libdir`;
-	$llvm_lib =~ s/\s+$//;
-	$llvm_rev = ctime(stat($llvm_lib)->mtime) if (-d $llvm_lib);
-	$llvm_rev_str = qq!#include "llvm/Config/config.h"\n#define LLVM_REV_STR PACKAGE_STRING" ($llvm_rev)"!;
-	# Assume latest release, so < any version we should be testing for.
-	$llvm_rev_nr = 0;
+    # Either non-trunk or 'svn info' didn't report "Last Changed Rev".
+    $extra_includes = qq!#include "llvm/Config/config.h"!;
+    $llvm_rev_str = "PACKAGE_STRING";
+    # Assume latest release, so < any version we should be testing for.
+    $llvm_rev_nr = 0;
+}
+
+# Use SVN date even if non-trunk:
+if ($svn_info =~ /^Last Changed Date: ([^(]*?)\s*(\(|$)/m) {
+    $llvm_date = qq!" ($1)"!;
+} else {
+    # Otherwise, try to get it from the libdir
+    my $llvm_lib = `perl @LLVM_CONFIG@ --libdir`;
+    $llvm_lib =~ s/\s+$//;
+    if (-d $llvm_lib) {
+        my $mod_time = ctime(stat($llvm_lib)->mtime);
+        $llvm_date = qq!" ($mod_time)"!;
+    }
 }
 
 my $ldc_rev = `hg -R@PROJECT_SOURCE_DIR@ log -r qparent --template '{rev}:{node|short} ({date|isodate})' 2>/dev/null || hg -R@PROJECT_SOURCE_DIR@ tip --template '{rev}:{node|short} ({date|isodate})'`;
 
 my $out = qq!#ifndef LDC_VERSIONS_H
 #define LDC_VERSIONS_H
+$extra_includes
 
 // LLVM version string, for use in -version output
-$llvm_rev_str
+#define LLVM_REV_STR $llvm_rev_str$llvm_date
 // LLVM svn revision number, used to adapt to changes in LLVM
-// (Is 0 if LLVM is not an SVN version)
+// (Is 0 if LLVM is not an SVN trunk version)
 #define LLVM_REV $llvm_rev_nr
 // LDC version string, for use in -version output
 #define LDC_REV "rev. $ldc_rev"