Issue 0020406: Time compilation when recompiling

Customize install script

diff --git a/salome_adm/unix/config_files/local_install.m4 b/salome_adm/unix/config_files/local_install.m4
new file mode 100644 (file)
index 0000000..34c523a
--- /dev/null
+++ b/salome_adm/unix/config_files/local_install.m4
@@ -0,0 +1,65 @@
+dnl Copyright (C) 2007-2008  CEA/DEN, EDF R&D, OPEN CASCADE
+dnl
+dnl Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+dnl CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+dnl
+dnl This library is free software; you can redistribute it and/or
+dnl modify it under the terms of the GNU Lesser General Public
+dnl License as published by the Free Software Foundation; either
+dnl version 2.1 of the License.
+dnl
+dnl This library is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+dnl Lesser General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU Lesser General Public
+dnl License along with this library; if not, write to the Free Software
+dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+dnl
+dnl See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+dnl
+dnl ---
+dnl File   : local_install.m4
+dnl Author : Vadim SANDLER, Open CASCADE S.A.S. (vadim.sandler@opencascade.com)
+dnl ---
+dnl
+
+dnl The purpose of below autoconf macro is to generate custom install script
+dnl to be used instead of global /usr/bin/install one.
+dnl The difference is that resulting install script does not install file passed
+dnl as parameter if its target copy exists and the file is not changed, i.e 
+dnl source and target files are the identical.
+dnl The check is performed by the diff command.
+
+AC_DEFUN([AC_LOCAL_INSTALL],
+[
+GLOBAL_INSTALL=$INSTALL
+absdir=`pwd`
+INSTALL=${absdir}/local-install.sh
+cat > ${INSTALL} << EOF
+#!/bin/sh
+
+nb_args=\$[#]
+args=\$[*]
+if test \$nb_args -gt 1 ; then
+    nb=\$(expr \$nb_args - 2)
+    shift \$nb
+    target=\$[2]
+    if test -f \$target ; then
+    orig=\$[1]
+    if test -f \$orig ; then
+        diff \$orig \$target > /dev/null 2>&1
+        if test \$[?] = 0 ; then
+        echo \$orig and \$target are identical
+        exit 0
+        fi
+    fi
+    fi
+fi
+${GLOBAL_INSTALL} \$args 
+EOF
+chmod +x ${INSTALL}
+AC_SUBST(INSTALL)
+AC_SUBST(GLOBAL_INSTALL)
+])dnl