11461 should use a native link-editor during the build
11463 SUNWonld has passed its use-by date
11464 cmd/sgs/tools should contain tools, not common code
11465 sgsmsg should be built with the rest of the build tools

          --- old/usr/src/tools/cw/cw.1onbld.man.txt
          +++ new/usr/src/tools/cw/cw.1onbld.man.txt
   1    1  CW(1ONBLD)                    illumos Build Tools                   CW(1ONBLD)
   2    2  
   3    3  NAME
   4    4       cw - invoke one or more compilers with argument translation
   5    5  
   6    6  SYNOPSIS
   7    7       cw [-C] [--versions] [--noecho] --primary compiler
   8      -        [--shadow compiler ...] -- compiler args ...
        8 +        [--shadow compiler ...] [--linker linker] -- compiler args ...
   9    9  
  10   10  DESCRIPTION
  11   11       cw is a facility for invoking one or more compilers, providing
  12   12       translation from Sun style arguments as appropriate.  This allows the use
  13   13       of arbitrary compilers without the need to alter large numbers of
  14   14       makefiles.  A mode called shadow compilation invokes multiple compilers
  15   15       so that warnings and errors may be obtained from all of them.  See SHADOW
  16   16       COMPILATION for details.  This version of cw supports compilers with both
  17   17       Sun Studio 12 and GCC-style command lines.
  18   18  

  19   19  ARGUMENTS
  20   20       Both the --primary and --shadow parameters take a compiler specification.
  21   21       This is a comma-separated list of the form name,executable,style Where
  22   22       name is a name for the compiler, executable is the full path to the
  23   23       compiler executable, and style is the style of command-line options the
  24   24       compiler expects, either sun or gnu.

  25   25  
  26   26       --primary compiler
  27   27               Specify the compiler to be used primarily (that which is used for
  28   28               link-editing and pre-processing, and whos objects we deliver).
  29   29  
  30   30       --shadow compiler
  31   31               Specify a shadow compiler, which builds sources for the sake of
  32   32               checking code quality and compatibility, but has its output
  33   33               discarded.
  34   34  
       35 +     --linker linker
       36 +             Specify a link-editor to use in place of /usr/bin/ld.  ld(1)
       37 +             itself arranges for this to be executed by any subprocesses.
       38 +
  35   39       --noecho
  36   40               Do not echo the actual command line of any compilers invoked.
  37   41  
  38   42       --versions
  39   43               Request from each configured primary and shadow compiler its
  40   44               version information.
  41   45  
  42   46       -C      The sources being compiled are C++.  This is necessary as it
  43   47               affects the translation of compiler arguments.
  44   48  

  45   49       --      Arguments intended for the compilers themselves must be separated
  46   50               from those of cw by a --.
  47   51  
  48   52       -_name=
  49   53  
  50   54       -_style=
  51   55               Parameters intended for the compiler be guarded with options of
  52   56               the form -_name= and -_style= Where name and style are those
  53   57               passed to --primary and --shadow this allows certain flags to be
  54   58               passed only to certain classes of compiler.
  55   59  
  56   60               For historical reasons, the -_style= option is also translated
  57   61               such that a style of sun may use the flag -_cc= and a style of
  58   62               gnu may use the flag -_gcc=, and when the -C option is given and
  59   63               C++ is in use the style of sun may use the flag -_CC= and the
  60   64               style of gnu may use the flag -_g++=.
  61   65  
  62   66  SHADOW COMPILATION
  63   67       If --shadow compilers are specified cw will invoke each shadow compiler,
  64   68       with the outputs modified (as well as any translation for compiler style)
  65   69       as follows:
  66   70  
  67   71       1.   If cw is invoked to link-edit without compilation (the input files
  68   72            are all objects), the shadow compiler is not invoked.
  69   73  
  70   74       2.   If the -o filename option was provided, with or without a separating
  71   75            space, it will be replaced with -o tempfile
  72   76  
  73   77       3.   If the option -o was not provided, -o tempfile will be added to the
  74   78            end of the argument list used to invoke the shadow compilers.
  75   79       When shadow compilation is in effect, cw writes to standard error each
  76   80       compiler's standard error output following its argument list.  Messages
  77   81       from the compilers will not be interleaved.  If cw is used to invoke the
  78   82       preprocessor and no output location is specified, cw will write to
  79   83       standard output the primary compiler's standard output.
  80   84  
  81   85       Because the Sun compilers write intermediate objects to fixed filenames
  82   86       in the current directory when instructed to compile and link multiple
  83   87       source files via a single command line, it would be unsafe to invoke more
  84   88       than one compiler in this fashion.  Therefore cw does not accept multiple
  85   89       source files unless the preprocessor is to be invoked.  An attempt to
  86   90       invoke cw in this manner will result in an error.
  87   91  
  88   92  ARGUMENT TRANSLATION
  89   93       If the compiler to be invoked is a GNU-style C or C++ compiler, a set of
  90   94       default flags is added to the beginning of the argument list, and the
  91   95       remaining arguments are translated to their closest appropriate semantic
  92   96       equivalents and passed in the same order as their counterparts given to
  93   97       cw.  See the comments at the head of usr/src/tools/cw/cw.c for a detailed
  94   98       list of translations.
  95   99  
  96  100  ENVIRONMENT
  97  101       CW_SHADOW_SERIAL
  98  102               If this variable is set in the environment, invoke the primary
  99  103               compiler, wait for it to complete, then invoke the shadow
 100  104               compilers.  Normally the primary and shadow compilers are invoked
 101  105               in parallel.
 102  106  
 103  107       CW_NO_EXEC
 104  108               f this variable is set in the environment, write the usual output
 105  109               to standard error but do not actually invoke any compiler.  This
 106  110               is useful for debugging the translation engine.
 107  111  

 108  112  EXIT STATUS
 109  113       The following exit status values are returned:
 110  114  
 111  115       0       The primary compiler, and shadow compilers if invoked, all
 112  116               completed successfully.
 113  117  
 114  118       >0      A usage error occurred, or one or more compilers returned a
 115  119               nonzero exit status.
 116  120  
 117  121  SEE ALSO
 118      -     cc(1), CC(1), gcc(1)
      122 +     cc(1), CC(1), gcc(1), ld(1)
 119  123  
 120  124  BUGS
 121  125       The translations provided for gcc are not always exact and in some cases
 122  126       reflect local policy rather than actual equivalence.
 123  127  
 124  128       Additional compiler types should be supported.
 125  129  
 126  130       The translation engine is hacky.
 127  131  
 128  132  illumos                        September 4, 2018                       illumos
    

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