$! Set the def dir to proper place for use in batch. Works for interactive too.
$flnm = f$enviroment("PROCEDURE")     ! get current procedure name
$set default 'f$parse(flnm,,,"DEVICE")''f$parse(flnm,,,"DIRECTORY")'
$!
$! Command file to build libgcc2.olb.  You should only run this once you 
$! have the current compiler installed, otherwise some of the builtins will
$! not be recognized.  Once you have built libgcc2.olb, you can merge this
$! with gnu_cc:[000000]gcclib.olb
$!
$if f$search("gcc-cc1.exe").eqs.""
$  then
$    gcc_cc1:=$gnu_cc:[000000]gcc-cc1
$    if f$extract(0,1,f$trnlnm("GNU_CC_VERSION")).eqs."1" then goto nocompile
$  else
$    gcc_cc1:=$sys$disk:[]gcc-cc1
$  endif
$!
$if f$search("gcc-cpp.exe").eqs.""
$  then
$    gcc_cpp:=$gnu_cc:[000000]gcc-cpp
$    if f$extract(0,1,f$trnlnm("GNU_CC_VERSION")).eqs."1" then goto nocompile
$  else
$    gcc_cpp:=$sys$disk:[]gcc-cpp
$  endif
$!
$gcc_as:=$gnu_cc:[000000]gcc-as
$cpp_file:=sys$scratch:gcc_'f$getjpi(0,"pid")'.cpp
$s_file:=sys$scratch:gcc_'f$getjpi(0,"pid")'.s
$!
$set symbol/scope=(nolocal,noglobal)
$!
$goto compile
$!
$nocompile:
$write sys$error "You must have gcc version 2 in order to build libgcc2."
$exit 0
$!
$compile:
$lib/create libgcc2.olb
$call compile_libgcc2 "L_muldi3"
$call compile_libgcc2 "L_divdi3"
$call compile_libgcc2 "L_moddi3"
$call compile_libgcc2 "L_udivdi3"
$call compile_libgcc2 "L_umoddi3"
$call compile_libgcc2 "L_negdi2"
$call compile_libgcc2 "L_lshrdi3"
$call compile_libgcc2 "L_lshldi3"
$call compile_libgcc2 "L_ashldi3"
$call compile_libgcc2 "L_ashrdi3"
$call compile_libgcc2 "L_udivmoddi4"
$call compile_libgcc2 "L_cmpdi2"
$call compile_libgcc2 "L_ucmpdi2"
$call compile_libgcc2 "L_floatdidf"
$call compile_libgcc2 "L_floatdisf"
$call compile_libgcc2 "L_fixunsdfsi"
$call compile_libgcc2 "L_fixunssfsi"
$call compile_libgcc2 "L_fixunsdfdi"
$call compile_libgcc2 "L_fixdfdi"
$call compile_libgcc2 "L_fixunssfdi"
$call compile_libgcc2 "L_fixsfdi"
$call compile_libgcc2 "L_varargs"
$call compile_libgcc2 "L_eprintf"
$call compile_libgcc2 "L_builtin_new"
$call compile_libgcc2 "L_builtin_New" L_builtin_nnew
$call compile_libgcc2 "L_builtin_del"
$call compile_libgcc2 "L_bb"
$call compile_libgcc2 "L_shtab"
$call compile_libgcc2 "L_clear_cache"
$call compile_libgcc2 "L_trampoline"
$call compile_libgcc2 "L__main"
$!call compile_libgcc2 "L_exit"
$exit
$!
$compile_libgcc2:
$subroutine
$objname = p1
$if p2.nes."" then objname = p2
$!
$! We do this by hand, since the VMS compiler driver does not have a way
$! of specifying an alternate location for the compiler executables.
$!
$ gcc_cpp "-I[]" "-I[.CONFIG]" "-D''p1'"  LIBGCC2.C 'cpp_file'
$ gcc_cc1 'cpp_file' -dumpbase 'objname' -
        -quiet -mgnu -g "-O1" -mvaxc-alignment   -o 's_file'
$ delete/nolog 'cpp_file';
$ gcc_as 's_file'  -o 'objname'.OBJ
$ delete/nolog 's_file';
$!
$lib libgcc2.olb 'objname'.obj
$del 'objname'.obj;/nolog
$endsubroutine