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README revision 1.1 
      1  1.1  mrg $NetBSD: README,v 1.1 2008/10/26 07:38:28 mrg Exp $
      2  1.1  mrg 
      3  1.1  mrg This directory contains Makefile fragments that will build all of the
      4  1.1  mrg NetBSD libraries in 32-bit mode and install them into /usr/lib/<arch>
      5  1.1  mrg and also install a /usr/libexec/ld.elf_so-<arch>.
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      7  1.1  mrg This is current only supported for the amd64 and sparc64 platforms,
      8  1.1  mrg where <arch> is "i386" or "sparc" respectively.  (It could be used to
      9  1.1  mrg build MIPS o32 libraries on n32 system, but not both n32 and o32 on
     10  1.1  mrg a n64 system.  It only supports one extra target.)
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     12  1.1  mrg 
     13  1.1  mrg Most of the makefiles here were built with the "build-makefiles" script.
     14  1.1  mrg The expections are lib/csu/Makefile and ld.elf_so/Makefile.
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     17  1.1  mrg The method used is the:
     18  1.1  mrg 	- evaluate some local variables
     19  1.1  mrg 	- switch .CURDIR
     20  1.1  mrg 	- include original Makefile,
     21  1.1  mrg 	- evaluate some variables
     22  1.1  mrg 	- switch .CURDIR back
     23  1.1  mrg that is used by crunchgen to build eg, installer media or /rescue.
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     27  1.1  mrg TODO:
     28  1.1  mrg 	- currently, LIBDPLIBS evaluation gets the src/lib directories
     29  1.1  mrg 	  not the src/compat/lib ones, and this causes build-time link
     30  1.1  mrg 	  failures.  it's work-around-able by running "nbmake-foo
     31  1.1  mrg 	  install" manually in each library not found.
     32  1.1  mrg 	- some yacc issue -- libc, libipsec and libpcap need "make" run
     33  1.1  mrg 	  to generate headers properly, otherwise it complains about
     34  1.1  mrg 	  no way to get to foo.h.
     35  1.1  mrg 	- there's an ugly hack to make libpam build correctly again the
     36  1.1  mrg 	  right libc.  ld.elf_so has a similar (but less ugly hack.)
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     39  1.1  mrg Future work
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     41  1.1  mrg Ideally this should be able to handle any number of compat targets.
     42  1.1  mrg Perhaps using a "force MAKEOBJDIR, and run-run make" solution will
     43  1.1  mrg work, but my initial attempts got me no where.  If not, perhaps
     44  1.1  mrg build-makefiles could be expanded to be used at run-time in such
     45  1.1  mrg a per-compat target obj-dir.
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