* common.mk (revision.h): extracts revision number with ``svn info''.

* common.mk (up): target to update from the repository.

* Makefile.in, {win,bcc}32/Makefile.sub (IFCHANGE): tool to update a
  file if changed.

* tool/ifchange: for unixen.

* win32/ifchange.bat: some fix


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15234 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 34 insertions, 7 deletions

diff --git a/win32/ifchange.bat b/win32/ifchange.bat
index 4fca646ea2..8411099020 100755
--- a/win32/ifchange.bat
+++ b/win32/ifchange.bat
@@ -1,13 +1,23 @@
 @echo off

 :: usage: ifchange target temporary

 

+if "%1" == "" goto :end

+

+set dest=%1

+set src=%2

+set dest=%dest:/=\%

+set src=%src:/=\%

+if not "%dest%" == "" if not "%dest%" == "%%dest:/=\%%" goto :nt

+

+if not exist %2 goto :end

+

 :: check if fc.exe works.

-echo foo > conftest1.tmp

-echo bar > conftest2.tmp

-fc.exe conftest1.tmp conftest2.tmp > nul

+echo foo > conftst1.tmp

+echo bar > conftst2.tmp

+fc.exe conftst1.tmp conftst2.tmp > nul

 if not errorlevel 1 goto :brokenfc

-del conftest1.tmp > nul

-del conftest2.tmp > nul

+del conftst1.tmp > nul

+del conftst2.tmp > nul

 

 :: target does not exist or new file differs from it.

 if not exist %1 goto :update

@@ -27,6 +37,23 @@ echo assuming %1 should be changed.
 

 :update

 echo %1 updated.

-if exist %1 del %1

-copy %2 %1 > nul

+:: if exist %1 del %1

+dir /b %2

+copy %2 %1

+del %2

+goto :end

+

+:nt

+if not exist %src% goto :end

+if exist %dest% (

+    fc.exe %dest% %src% > nul && (

+	echo %dest% unchanged.

+	del %src%

+	goto :end

+    )

+)

+echo %dest% updated.

+copy %src% %dest% > nul

+del %src%

+

 :end