--- /dev/null
+dnl Copyright (C) 2003 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.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
+dnl
+dnl
+dnl
+dnl @synopsis AC_C_DEPEND_FLAG
+dnl
+dnl define C_DEPEND_FLAG
+dnl define CXX_DEPEND_FLAG
+dnl
+dnl @version $Id$
+dnl @author Marc Tajchman
+dnl
+AC_DEFUN(AC_DEPEND_FLAG,
+[AC_CACHE_CHECK(which flag for dependency information generation,
+ac_cv_depend_flag,
+[AC_LANG_SAVE
+ AC_LANG_C
+ echo "conftest.o: conftest.c" > conftest.verif
+ echo "int main() { return 0; }" > conftest.c
+
+dnl Evolution portage sur CCRT/osf system
+ case $host_os in
+ osf*)
+dnl sur CCRT/osf pas d'equivalent de l'option -MG de gcc avec compilo natif
+dnl on utilise donc gnu pour generer les dependances.
+ DEPCC=gcc
+ DEPCXX=g++
+ DEPCXXFLAGS="-Wno-deprecated"
+ DIFFFLAGS="-w"
+ MACHINE="OSF1"
+ ;;
+ *)
+ DEPCC=${CC-cc}
+ DEPCXX=${CXX-c++}
+ DEPCXXFLAGS="\${CXXFLAGS}"
+ DIFFFLAGS="-b -B"
+ MACHINE="PCLINUX"
+ ;;
+ esac
+ C_DEPEND_FLAG=
+ for ac_C_DEPEND_FLAG in -xM -MM -M ; do
+
+ rm -f conftest.d conftest.err
+ ${DEPCC} ${ac_C_DEPEND_FLAG} -c conftest.c 1> conftest.d 2> conftest.err
+ if test -f conftest.u ; then
+ mv conftest.u conftest.d
+ fi
+
+ rm -f conftest
+ diff ${DIFFFLAGS} conftest.d conftest.verif > conftest
+ if test ! -s conftest ; then
+ C_DEPEND_FLAG=${ac_C_DEPEND_FLAG}
+ break
+ fi
+ done
+
+dnl use gcc option -MG : asume unknown file will be construct later
+ rm -f conftest.d conftest.err
+ ${DEPCC} ${C_DEPEND_FLAG} -MG -c conftest.c 1> conftest.d 2> conftest.err
+ if test -f conftest.u ; then
+ mv conftest.u conftest.d
+ fi
+ rm -f conftest
+ diff ${DIFFFLAGS} conftest.d conftest.verif > conftest
+ if test ! -s conftest ; then
+ C_DEPEND_FLAG=${C_DEPEND_FLAG}" -MG"
+ fi
+
+ rm -f conftest*
+ if test "x${C_DEPEND_FLAG}" = "x" ; then
+ echo "cannot determine flag (C language)"
+ exit
+ fi
+
+ printf " C : ${DEPCC} ${C_DEPEND_FLAG}"
+
+ AC_LANG_CPLUSPLUS
+ echo "conftest.o: conftest.cxx" > conftest.verif
+ echo "int main() { return 0; }" > conftest.cxx
+
+ CXX_DEPEND_FLAG=
+ for ac_CXX_DEPEND_FLAG in -xM -MM -M ; do
+
+ rm -f conftest.d conftest.err
+ ${DEPCXX} ${ac_CXX_DEPEND_FLAG} -c conftest.cxx 1> conftest.d 2> conftest.err
+ if test -f conftest.u ; then
+ mv conftest.u conftest.d
+ fi
+
+ rm -f conftest
+ diff ${DIFFFLAGS} conftest.d conftest.verif > conftest
+ if test ! -s conftest ; then
+ CXX_DEPEND_FLAG=${ac_CXX_DEPEND_FLAG}
+ break
+ fi
+ done
+
+dnl use g++ option -MG : asume unknown file will be construct later
+ rm -f conftest.d conftest.err
+ ${DEPCXX} ${CXX_DEPEND_FLAG} -MG -c conftest.cxx 1> conftest.d 2> conftest.err
+ if test -f conftest.u ; then
+ mv conftest.u conftest.d
+ fi
+ rm -f conftest
+ diff ${DIFFFLAGS} conftest.d conftest.verif > conftest
+ if test ! -s conftest ; then
+ CXX_DEPEND_FLAG=${CXX_DEPEND_FLAG}" -MG"
+ fi
+
+
+ rm -f conftest*
+ if test "x${CXX_DEPEND_FLAG}" = "x" ; then
+ echo "cannot determine flag (C++ language)"
+ exit
+ fi
+
+ printf " C++ : ${DEPCXX} ${CXX_DEPEND_FLAG}"
+ AC_LANG_RESTORE
+
+ AC_SUBST(DEPCC)
+ AC_SUBST(DEPCXX)
+ AC_SUBST(DEPCXXFLAGS)
+ AC_SUBST(C_DEPEND_FLAG)
+ AC_SUBST(CXX_DEPEND_FLAG)
+ AC_SUBST(MACHINE)
+])
+])
