[SAMBA4][PATCH] allow srcdir and builddir to differ in the build system

[James Peach]

Hi all,

I need to build Samba 4 in a very particular build system. This  
creates a number of separate directory hierarchies, of which only  
SRCROOT and OBJROOT concern. SRCROOT is a read-only copy of the source  
tree you are trying to build. OBJROOT is a writeable directory where  
all the built artifacts go (generated code, object files, binaries,  
etc).

The "interesting" portions of the build go roughly like this:
	cd OBJROOT && SRCROOT/configure --configure --flags --foo
	make -C OBJROOT

At this point, we will have the original sources in SRCROOT and a pile  
of generated sources in OBJROOT. The attached patch alters the Samba 4  
build system so that this style of build works correctly. The main  
issues are making sure that all the scripts generate and examine the  
correct paths and to make sure that paths to both SRCROOT and OBJROOT  
are passed to the compiler.

This patch does not fix the installheader target. It has been tested  
only in the build environment described above.



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James Peach | jpeach at samba.org