[omniORB] cross compile host tools bug

[mlweber1 at rockwellcollins.com]

When building omniorb for a cross target (ie building on x86 to create a 
ARM executable).  I follow the following existing steps, but I believe the 
attached patch can make this cleaner.

1) I configure using the cross compiler defines and point the build at my 
ARM sysroot
2) I directly build the tools and place them for use by the cross build
${HOST_MAKE_ENV} ${MAKE} CXX=${HOSTCXX} CC=${HOSTCC} -C src/tool/omkdepend
cp src/tool/omkdepend/omkdepend bin/
${HOST_MAKE_ENV} ${MAKE} CXX=${HOSTCXX} CC=${HOSTCC} -C 
src/tool/omniidl/cxx/cccp
${HOST_MAKE_ENV} ${MAKE} CXX=${HOSTCXX} CC=${HOSTCC} -C 
src/tool/omniidl/cxx
3) Then I do a target make and let it build the cross compiled omniorb.

Since the src/tools folder already has an export and clean capability.  By 
adding a check to the definition of the CC/CXX/etc defines in 
beforeauto.mk, we can temporarily override the cross toolchain to build 
the tools and install them.  ie below

        $(HOST_MAKE_ENV) $(MAKE) CXX=$(HOSTCXX) CC=$(HOSTCC) -C src/tool 
export

This is instead of directly building the source and installing like I did 
above.  See attached for the patch.



Matthew L Weber / Sr Software Engineer / Platform SW 
mlweber1 at rockwellcollins.com
www.rockwellcollins.com 

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