Open Cascade 6.2 build fixes

Open Cascade 6.2 Build Fixes

configure-cxxflags.patch: Fix stomping of CXXFLAGS, etc. (including flags the configure script itself attempts to add.)
configure.in : 3 insertions, 3 deletions
configure-autoconf.patch: Update configure.in for newer versions of autoconf and automake.
configure.in : 2 insertions, 2 deletions
configure-64bit.patch: Automatically detect 64-bit platforms and define _OCC64
configure.in : 18 insertions
debian-eof.patch: The constant EOF is defined in stdio.h. While it may also get pulled in with stdlib.h on some systems, this is not the case for Debian (and derivatives such as Ubuntu).
src/LDOM/LDOM_OSStream.hxx : 1 insertion inc/LDOM_OSStream.hxx : 1 insertion src/WOKTools/WOKTools_Options.cxx : 1 insertion
no-friend-injection.patch: The C++ standard does not consider a friend declaration to implicitly provide a forward declaration. In g++ 4.1 and newer, g++ conforms to the C++ standard in this regard (unless -ffriend-injection is specified). Provide forward declarations that are implicitly provided by friend declarations with other/older compilers.
inc/Units_Dimensions.hxx : 3 insertions inc/Units_Quantity.hxx : 1 insertion inc/Units_Token.hxx : 13 insertions inc/Units_Unit.hxx : 1 insertion src/Standard/Standard_Persistent.cxx : 1 insertion src/Standard/Standard_Transient_proto.hxx : 3 insertions inc/Standard_Transient_proto.hxx : 3 insertions
redundant-class-scope.patch: Newer versions of G++ don't like the redundant prefixing of class member declarations with classname::.
inc/Standard_ErrorHandlerCallback.hxx : 1 insertion, 1 deletion src/BOPTest/BOPTest_LowCommands.cxx : 1 insertion, 1 deletion
sstream-portability.patch: Fix portability issue extracting C-type string from sstream.
src/Standard/Standard_SStream.cxx : 1 insertion, 1 deletion

Combined Patch: occ6.2.patch

Applying patches

To apply any of these patches, in the directory where you installed Open CASCADE execute the command patch -p1 < occ6.2.patch, replacing occ6.2.patch with the complete path to whichever patch file you wish to apply.

If the patches that modify configure.in are applied, you will need to regenerate configure and other files. Most likely you will need to apply the configure-autoconf.patch and issue the command autoreconf -fi to ensure that all files are updated with the versions of the GNU autotools you have installed. Failure to update all the files will most likely result in a broken build system due to version incompatibilities.

Configuration

The configure script included with OpenCascade is broken in that it does not check in default locations for required libraries automatically. For example, even though every system one is ever likely to build it on has libXmu installed in /usr/lib, it is still necessary to tell the configure script to look there using a flag.

A OpenCascade build must be "installed" to a specific location within the unpacked download. The following flag should always be specified (note backticks, not single quotes):
--prefix=`pwd`/`uname`
OpenCascade requires Tcl/Tk. The locations must be specified with configure flags similar to the following:
--with-tcl=/usr/lib/tcl --with-tk=/usr/lib/tk
It will expect the files tclConfig.sh and tkConfig.sh to be in the directories indicated by the above flags, respectively.
OpenCascade requires OpenGL. Specifically the paths to the gl.h header and the libGL.* library must be specified with the following two options:
--with-gl-include=<somepath> --with-gl-library=<somepath>
On most newer Linux distributions, these should be specified as:
--with-gl-include=/usr/include --with-gl-library=/usr/lib
OpenCascade uses the Xmu library. This is included with most unix-like operating systems as a part of X11. These values are almost always:
--with-xmu-include=/usr/include/X11 --with-xmu-library=/usr/lib
OpenCascade may require Java (I'm not sure if this is a feature or a requirement). Specifically, the configure script checks for the jni_md.h header in the directory specified with the flag:
--with-java-include=<somepath>

Summary

The complete OpenCascade installation process, including building from source, is analogous to the following:

wget 'http://www.opencascade.org/ex/stats/cnt2.php?code=Occ62Linux&usr=&chw=BWZVF1194990141' mkdir occtmp cd occtmp gunzip < ../OpenCASCADE_Linux.tgz | tar xvf - java -cp Linux/setup.jar run # Assuming /opt/occ6.2 as install directory specified in GUI tool cd /opt/occ6.2/ros wget http://homepages.cae.wisc.edu/~kraftche/OCC/occ6.2.patch patch -p2 < occ6.2.patch autoreconf -fi ./configure --prefix=`pwd`/`uname` \ --with-tcl=/usr/lib/tcl8.4 --with-tk=/usr/lib/tk8.4 \ --with-gl-include=/usr/include --with-gl-library=/usr/lib \ --with-xmu-include=/usr/include/X11 --with-xmu-library=/usr/lib \ --with-java-include=/usr/lib/jvm/java-1.5.0-sun/include make make install

Other Patches

Added Jan. 18. 2008.

The occ-build.patch patch makes more substantial changes to the OpenCASCADE build system:

Add checks for required dependencies in default locations when configure options are not specified.
Search more default locations for dependencies.
Support --without-* configure flags to disable checks.
Make checks more robust and add better error reporting.
prefix defaults to the expected location for in the source tree.
Gracefully disable components if dependencies are not available.
Add configure flags to disable build of some components.
Print summary of configuration.
Remove configure flags that are better specified using CPPFLAGS and LDFLAGS.
Remove option to use STLPort alternate C++ standard library implementation.

This patch conflicts with the above patches affecting the configure script, and incorporates equivalent changes. Conflicting patches:

configure-cxxflags.patch
configure-autoconf.patch
configure-64bit.patch